SSECTIONECTION 11
PPLANLAN SSUMMARYUMMARY
1
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
1) Executive Summary1) Executive Summary
MAHARVI – 1 is an exploratory well in the Maharvi Concession. The objective of this well is to test the SaltRange Formation / Khewra Sandstone with the well to be drilled to a Target Depth of 7,300ft-RT or 200 ft inside “Basement” (whichever is shallower)
Spudded with the 12¼ bit, the well will be drilled to 1917ft-RT in the first hole section. This section will be cased with 9⅝ casing and cemented to the surface. After the casing/cementing job, 11 x 9⅝ 5K SOW wellhead will be installed.
The final phase will be drilled with 8½ hole to the T.D at 7,300ft-RT. This section will be drilled to test the potential of Salt Range Formation / Khewra Sandstone and will be logged as per the logging program. Decision to run 7 casing will be based on the E-log results, open hole testing and hydrocarbon shows. 8½ hole will be cased with 7 casing followed by cementation job to the surface. After cementing 7 casing hanger will be landed inside 9⅝ Casing Head Housing & 11 5K x 11 5K Tubing spool will be installed.
After running 7 casing, completion will be run, X-mass tree installed and pressure tested. The well will then be perforated and tested as per program.
In the event well has to be abandoned, appropriate abandonment procedure will be set in place as per the guidelines in the Plug and Abandonment section of this Program.
The well will be drilled and completed so that oil & gas production may commence as soon as possible.
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
SSECTIONECTION 22WWELLELL SSYNOPSISYNOPSIS
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
WELL MAHARVI – 1
CLASSIFICATION Exploratory
LOCATION Line 2007 - MRV - 07, SP 1574
CO-ORDINATES Latitude 29° 51' 32.9817" N Longitude 72° 55' 55.7589" E
ELEVATION RT 506 ft. (AMSL)GL 476 ft. (AMSL)
EASTINGNORTHING
3219437.00 E 632898.90 N
CONCESSION AREA Maharvi E.L.
PROSPECT TYPE Tilted Fault block
REFERENCE SYSTEM Everest 1830 (Pakistan) Ellipsoid. Lambert Projection – India Zone I
PROGNOSED T.D 7300 ft RT (6794 ft SS) or 200 ft inside “Basement” (whichever is shallower)
OBJECTIVE SaltRange Formation / Khewra Sandstone.
AREAL CLOSURE 4895 Acres18317Acres
VERTICAL CLOSURE 100 ft
RIG OUTFIT TO BE DEPLOYED Global Drilling GD-1.
COMPLETION OF DRILLING ± 20 Days after spud in (excluding 7” Casing & Cmt)
RESPONSIBILITY OF EXECUTION OPII Drilling Department
2) WELL SYNOPSIS2) WELL SYNOPSIS
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
SSECTIONECTION 33GGEOLOGYEOLOGY
5
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
7 0 0 0
5 0 0 0
4 0 0 0
3 0 0 0
AG
E
FO
RM
AT
ION
DE
PT
H I
N
LIT
HO
LO
GY
CA
SIN
G
WIR
EL
INE
WE
IGH
T
FE
ET
(R
T)
R E M A R K S
B A S E M E N T
M A H A R V I - 1P R O G N O S E D S E C T I O N
M A H A R V I B L O C K
6 0 0 0
2 0 0 0
G L : 4 7 6 F T
1 0 0 0
T D . 7 , 3 0 0 F T R T ( 6 7 9 4 F T S S )
1 9 1 7 '
SA
LT
RA
NG
E (
21
65
')
( 2 9 8 ' + )P R E - C A M B R I A N
2 0 8 4 '
2 2 1 2 '
2 6 6 1 '
3 1 5 4 '
3 3 8 0 '3 4 2 6 '
3 6 8 8 '
4 8 3 7 '
SIW
AL
IKS
(+1
88
7')
NE
OG
EN
E
N A M M A L ( 1 6 7 ' )S A K E S A R +E O C E N E
D A T T A ( 1 2 8 ' )E - J U R A S S I C
S A R D H A I ( 4 4 9 ' )
W A R C H H A ( 4 9 3 ' )
D A N D O T ( 2 2 6 ' )
T O B R A ( 4 6 ' )
J U T A N A ( 2 6 2 ' )
K H E W R AK U S S A K +
( 1 1 4 9 ' )
PE
RM
IAN
CA
MB
RIA
NIN
FR
A C
AM
BR
IAN
7 0 0 2 '
X X X X X X X X X XX X X X X X X X X XX X X X X X X X X XX X X X X X X X X XX X X X X X X X X X
v v v v v v v v v
v v v v v v v v v
v v v v v v v v v
D O M I N A N T L Y S A N D S T O N E W I T H I N T E R C A L A T I O N O F C L A Y S T O N E .
D O M I N A N T L Y L I M E S T O N E W I T H T H I N B E D S
C L A Y S T O N E W I T H I N T E R C L A T I O N
D O M I N A N T L Y S A N D S T O N E W I T H
S A N D S T O N E W I T H T H I N B E D S O F C L A Y S T O N E .
D O M I N A N T L Y E V A P O R I T E S( D O L O M I T E , A N H Y D R I T E A N D S A L T ) W I T H T H I N B E D S O F C L A Y A N D S A N D S T O N E .
D O M I N A N T L Y S A N D S T O N E W I T H C L A Y S T O N E
D O M I N A N T L Y S A N D S T O N E W I T H C L A Y S T O N E
P R E D O M I N A N T L Y D O L O M I T E
S A N D S T O N E W I T H I N T E R C A L A T I O N O F
I G N E O U S B A S E M E N T .
O F C L A Y S T O N E .
O F S A N D S T O N E
I N T E R C A L A T I O N O F C L A Y S T O N E .
L I M E S T O N E , T H I N B E D S O F S I L T S T O N E A N D D O L O M I T E .
R T : 5 0 6 F T
9-5
/8"
CA
SIN
G @
19
17
FT
RT
LO
GG
ING
BH
C-G
R
DL
L-M
SF
L-B
HC
-GR
-SP
LD
L-C
NL
-NG
S,
SH
DT
-GR
N O T E : T D W I L L B E 7 3 0 0 F T R T O R 2 0 0 F T I N S I D E B A S E M E N T ( W H I C H E V E R I S S H A L L O W E R )L E G E N D
V
A N H Y D R I T E
S H A L E
L I M E S T O N E
S I L T S T O N E
D O L O M I T E
S A N D S T O N E
S A L T
C L A Y S T O N E
V V V
V V V V
I G N E O U S
X X X XX X X XX X X X
MU
D
v v v v v v v v v
v v v v v v v v v
v v v v v v v v v
v v v v v v v v v
v v v v v v v v v
8-1
/2"
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TO
BE
DR
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ED
TO
TD
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L 7
" C
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TO
BE
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N I
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EQ
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9 - 1 0
9 - 1 0
SA
LT
SA
TU
RA
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D M
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TO
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ED
P
P
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(PP
G)
P R I M A R Y O B J E C T I V EP
L A T : 2 9 ° 5 1 ' 3 2 . 9 8 1 7 " NL O N G : 7 2 ° 5 5 ' 5 5 . 7 5 8 9 " E
S
S
S E C O N D A R Y O B J E C T I V ES
3.1) PROGNOSED SECTION3.1) PROGNOSED SECTION
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
3.2) PROGNOSIS SUMMARY3.2) PROGNOSIS SUMMARY
RT: 506 ft (AMSL)GL: 476 ft (AMSL)
Age FormationTop - RT
(Ft)Top - SS
(Ft)Thickness
(Ft)
NEOGENE SIWALIKS Surface +476 +1887
EOCENESAKESAR + NAMMAL
1917 1411 167
E.JURASSIC DATTA 2084 1578 128
PERMIAN
SARDHAI 2212 1706 449
WARCHHA2661 2155 493
DANDOT3154 2648 226
TOBRA3380 2874 46
CAMBRIAN
JUTANA3426 2920 262
KUSSAK + KHEWRA 3688 3182 1149
INFRA -CAMBRIAN
SALT RANGE
4837 4331 2165
PRE -CAMBRIAN
BASEMENT7002 6496 298+
TD 7300 6794
NOTE:
T.D. will be 7300 ft RT or 200 ft inside “Basement” (whichever is shallower).
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
3.3) FORMATION CHARACTERISTICS 3.3) FORMATION CHARACTERISTICS
3.3.1) RECENT – SIWALIKS : ( Surface – 1917 ft RT )
Recent: ( Surface – 830 ft )The Lithology consists dominantly of loose Sand with Clay.
Rawalpindi Group: ( 830 – 1917 ft RT )
Lithology
The Lithology typically consists of red Claystone with Sandstone. At the base which is overlain by thick Sandstone and Claystone with minor Limestone. Rawalpindi group is anticipated at 830 ft. The thickness of the Limestone encountered at the Top of this group is 50 m at Marot # 1 and 20 m at Bahawalpur East # 1.
Sandstone:
Light brown, clear, white, pale yellow, fine to medium grained, i/p coarse grained, angular to subangular, unconsolidated to consolidated, i/p sorted, calcareous cement, micaceous.
Claystone:
Medium to light brown, grey, soft, swell, calcareous..
Siltstone:
Reddish brown, buff, greenish grey, calcareous cement.
Limestone:
Off white, light grey, moderately hard, microcrystalline.
SAKESAR AND NAMMAL FORMATION : ( 1917 – 2084 ft RT ) 3.3.2) SAKESAR FORMATION:
Lithology
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
At type locality the formation consists dominantly of Limestone with subordinate Marl. The Limestone is cream coloured to light grey, nodular, usually massive with considerable development of Chert in the upper part. The Marl is cream coloured to light grey.
At Bahawalpur East #1 and Marot #1 the lithology encountered is as follows:
Limestone:
White, off white, yellowish brown, occasionally brown, microcrystalline, chalky, argillaceous, moderately hard to hard, traces fossils, Packstone.
Clay stone:
Light brown, green, buff, bluish grey, i/p grey, sticky, firm, amorphous, blocky, silty, calcareous..
Marl:
Light grey, moderately hard..
3.3.3) NAMMAL FORMATION:
LithologyAt type locality the formation consists alternation of Shale, Marl and Limestone. The Shale is grey to olive green, while the Limestone and Marl are light grey to bluish grey. The Limestone is argillaceous in places.
The Lower part of the formation is composed of bluish grey Marl with subordinate interbedded calcareous Shale and minor Limestone. The upper part consists of bluish grey to dark grey Limestone with intercalation of Marl and Shale.
At Bahawalpur East # 1 and Marot #1 the lithology encountered is as follows :
Claystone:
Dark grey, green, light grey, olive green, soft, traces pyrite, calcareous, non swell..
Marl:
Off white, brown, soft, sticky.
Siltstone:
Grey, off white, moderately hard, calcareous, argillaceous, mic..
ContactThe Upper contact with Sakessar Limestone is transitional..
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
EARLY JURASSIC
3.3.4) DATTA FORMATION: (2084 – 2212 ft RT )
Lithology
At type locality the formation is mainly of continental origin and consist of varigated (red, maroon, grey, green and white) Sandstone, Shale, Siltstone and Mudstone with irregularly distributed calcareous, dolomitic, carbonaceous, ferruginous glass Sand and fireclay horizons. Fireclay is normally present in the Lower part while the upper part includes a thick bed of maroon Shale.
At Bahawalpur East # 1 and Marot #1 the lithology encountered is as follows :
Limestone: Grey, off white, clear, fine to medium grained, angular to subangular, i/p subrounded, sorted, lig streaks, calcareous cement.
Claystone / Shale: Reddish brown, dark grey, chocolate brown, soft to hard, calcareous, silty, sticky, i/p amorphous, (org).
Siltstone:
Grey, moderately hard, calcareous, micaceous..
PERMIAN3.3.5) SARDHAI FORMATION: (2212 – 2661 ft RT )
LithologyAt type locality the formation is composed of bluish and greenish grey Clay, with some minor Sand and Siltstone beds. It also contains some carbonaceous Shale. The Clay
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
predominantly displays Lavender colour. Minor chert and gypsum are found dissiminated in the formation with occasional calcareous beds in the upper part of it.
At Bahawalpur East #1 Sardhai Formation predominantly composed of Sandstone..
Sandstone:
Grey, dark grey, green, occasionally yellow, clear, fine to medium grained, i/p coarse grained, angular to subangular, quartz, calcareous cement, glauconitic, sorted.
Claystone:
Olive green, grey, firm, calcareous, non swell..
3.3.6) WARCHHA SANDSTONE: (2661 – 3154 ft RT )
LithologyThe formation consists of medium grained Sandstone, conglomeratic in places and has interbeds of Shale / Claystone.
Sandstone:
Clear, translucent, light brown, fine to medium grained, angular to sub rounded, moderately sorted, calcareous cement. At type locality it is red, purple or shows lighter shades of pink, arkosic, the pebble of the unit are mostly of pink colour and of quartzite..
Claystone:
Dark brown, dark grey, green, reddish brown, moderately hard to firm, calcareous, non-swell, (pyr), silty..
ContactThe Warchha Sandstone conformably overlies the Dandot Formation.
3.3.7) DANDOT FORMATION: (3154 – 3380 ft RT )
Lithology
The formation consists of light to dark grey, olive green, yellowish Sandstone with occasional thin pebbly beds and subordinate dark grey and greenish splintery Shales.
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
Sandstone:
Dark grey, fine grained, angular to subangular, sorted, argillaceous.Boulder Bed: dark grey, Clayey matrix, firm, non calcareous, Sandy..
Claystone / Shale:
Dark grey, green, i/p brown, i/p silty, i/p calcareous.The formation has a gradational contact with the underlying Tobra Formation and is terminated in sharp but conformable contact with the overlying Warchha Sandstone.
3.3.8) TOBRA FORMATION: (3380 – 3426 ft RT )
Lithology
The formation consists of marine Sandstone, alternating facies of Siltstone and Shale.At
Bahawalpur East # 1 and Marot #1 the formation dominantly consists of Sandstone.
Sandstone:
Dark grey, fine grained, angular to subangular, sorted, argillaceous.Boulder Bed: dark grey, Clayey matrix, firm, non calcareous, Sandy.
CAMBRIAN
3.3.9) JUTANA FORMATION: (3426 – 3688 ft RT )
Lithology
The Lower part of the formation consists of light green, hard, massive, partly Sandy Dolomite and the upper part is composed of light green to dirty white massive Dolomite.
Dolomite:
Light brown, grey, hard, cryptocrystalline, Sandy.The formation is conformably underlain by the Kussak Formation.
KUSSAK AND KHEWRA FORMATION: (3688 – 4837 ft RT )
3.3.10) KUSSAK FORMATION:Lithology
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
The formation is composed of Sandstone and Siltstone, with minor light grey Dolomite, pink Gypsum lenses may be present near the Top.
Sandstone:
Brown, greenish grey, yellow, clear, i/p light brown, i/p translucent, fine grained, angular to subangular, i/p dol, moderately sorted to sorted, i/p glauconitic, i/p micaceous, i/p argillaceous.
Siltstone: Brown, greenish grey, dolomitic, pyrite.parts, slightly to non calcareous, silty in parts, occasionally grades to siltstone, traces of pyrite.
3.3.11) KHEWRA SANDSTONE:Lithology
The formation consists predominantly of purple to brown, yellowish brown, fine grained Sandstone and Siltstone. The Lower most part of the formation is red, flaggy shale with minor Siltstone.
Sandstone:
Purple to brown, yellowish brown, fine grained.
Shale / Claystone:
Reddish brown, non calcareous, non-swell, silty..
Siltstone:
Reddish brown, off white, firm to hard, i/p dolomitic.
INFRA CAMBRIAN
3.3.11) SALT RANGE FORMATION: (4837 – 7002 ft RT )
Lithology
The Lower part of SaltRange Formation is mainly composed of Marl with Salt, Sandstone and Claystone while the beds of Dolomite, Anhydrite, Limestone, Siltstone and Shale are the constituents of the Upper part.
Dolomite:
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
White, creamy, grey, off white, i/p green, i/p light grey, i/p light brown, massive, hard, i/p moderately hard to hard, blocky, microcrystalline, argillaceous, chalky, dense, i/p suc,i/p calc cmt, loc vuggy.
Limestone:
Light brown to brown, off white, grey, i/p light grey, firm to moderately hard, argillaceous, microcrystalline, stromatolitic filaments, dolomitic, Mudstone.
Claystone:
Off white, grey, reddish brown, bluish grey, i/p light grey, i/p green, i/p dark brown, mic, soft to moderately hard, i/p sticky, non-swell, silty, calcareous.
Sandstone:
Brown, green, reddish brown, dark brown, i/p white to off white, fine to coarse grained, angular to subrounded, micaceous, sorted, calcareous to non calcareous cement, silty, brecciated, with dolomitic streaks, ferru, lam.
Siltstone:
White, off white, dark brown to red, dark grey, friable to moderately hard, ferru, crm, i/p oolitic, moderately calcareous to calcareous cement.
Marl:
Grey, green, i/p red, dolomitic
Anhydrite :
White, off white, green, soft to firm, i/p moderately hard, i/p amorphous, chalky, occasionally Siltstone with few Anhydrite, Dolomite beds (Breccia ), i/p lam.
Salt:
Clear, occasionally translucent, i/p pink, hard to moderately hard.
Shale:
Dark grey, black, firm, crm, non calcareous, lam, (org).
PRE CAMBRIAN
3.3.12) BASEMENT: (7002 – 7300+ ft RT )
Lithology
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
These oldest rocks are composed of sedimentary, metasedimentary, metamorphic and igneous complexes. The lithology is composed of dark coloured and hard but more importantly fractured rock.
At Bahawalpur East #1 and Marot # 1 the characteristics of the formation are as follows:
Basement:
Black, dark green, hard, fractured, calc veins, chlorite, pyrite, metamorphosed basic Igneous rock, Dolerite.
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
SSECTIONECTION 44DDRILLINGRILLING & & CCASINGASING
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
Top of 7 Liner @ ± 7,300 ft , ± 300 ft Liner Lap
7 29 ppf TPCQ pin X Box casing Shoe @ ± 7,300 ft ,
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Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
4.1) Planned Well Schematic4.1) Planned Well Schematic
8½ Hole ± 9,709 ft
9⅝ Top of cement
16 Line Pipe Conductor @ 60 - 80 ft
12¼ Hole ± 1,917 ft
8½ Hole ± 7,300 ft
9⅝ Casing 47 PPF, L-80, BTC, Shoe @ ± 1,917 ft
Maharvi – 1 DrillingMaharvi – 1 Drilling
ProgramProgram
4.2) Drilling Montage4.2) Drilling Montage
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Maharvi – 1 DrillingMaharvi – 1 Drilling
ProgramProgram
vv
v vv v
v vv v
v v
7 0 0 0
6 0 0 0
5 0 0 0
4 0 0 0
3 0 0 0
2 0 0 0
1 0 0 0
D E P T H
( F T - R T )
L I T H O L O G Y
P R O G .
C A S I N G / L I N E RS H O E D E P T H
D R I L L I N G T I M E D E P T H C U R V E
0 1 0 2 0 3 0 4 0 5 0N U M B E R O F D A Y S
G L : 4 7 6 ' ( A M S L )
F O R M A T I O NA G EA C T U A L
M A H A R V I X - 1
P R O G N O S E D
T O P
( F T - R T )
R T : 5 0 6 ' ( A M S L )D R I L L I N G M O N T A G E
A C T U A L
T O P S
S P U D D A T E :
0 1 0 2 0 3 0 4 0 5 0
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L O G G I N G
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S C A L E : 1 : 6 0 0 0M A H A R V I X - 1
A C T U A L
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C O L U M N
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(+1
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)
N A M M A L ( 1 6 7 ' )S A K E S A R +E O C E N E
D A T T A ( 1 2 8 ' )E - J U R A S S I C
PE
RM
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S A R D H A I ( 4 4 9 ' )
W A R C H H A ( 4 9 3 ' )
D A N D O T ( 2 2 6 ' )
T O B R A ( 4 6 ' )
CA
MB
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N
J U T A N A ( 2 6 2 ' )
K H E W R AK U S S A K +
( 1 1 4 9 ' )
SA
LT
RA
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2165
')
INF
RA
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P R E - C A M B R I A N
9-5/
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@ 1
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RT
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(48
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(34
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1 4 9 9 '
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(161
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T D . 7 , 3 0 0 F T R T ( 6 7 9 4 F T S S )
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F T - D R I L L E D ( 2 1 2 ' )
1 7 - 1 / 2 ' 'O S C - 3 ( 1 B I T U S E D )
3 7 . 7 5 H R4 7 F T /H R
F T - D R I L L E D ( 1 7 7 4 ' )
1 2 - 1 / 2 ' 'O S C - 3 J ( 4 B IT S U S E D )
8 2 . 2 5 H R3 8 . 2 F T /H R
F T - D R I L L E D ( 3 1 4 3 ' )
1 2 - 1 / 2 ' 'O S C - J ( 2 B I T S U S E D )
3 2 . 5 0 H R1 5 . 9 F T /H R
F T - D R I L L E D ( 5 1 8 ' )
1 2 - 1 / 2 ' 'O S Q - 2 J ( 1 B I T U S E D )
1 5 . 5 0 H R1 9 . 6 F T /H R
F T - D R I L L E D ( 3 0 4 ' )
8 - 1 /2 "O S C - 3 J ( 2 B IT S U S E D )
1 8 . 7 5 H R2 9 . 8 F T /H R
F T - D R I L L E D ( 5 5 8 ' )
8 - 1 /2 "O S C - J ( 3 B I T S U S E D )
4 0 H R1 3 . 6 F T /H R
F T - D R I L L E D ( 5 4 4 ' )
8 - 1 /2 "O S Q - 2 J ( 1 B I T U S E D )
8 . 2 5 H R5 . 1 F T / H R
F T - D R I L L E D ( 4 2 ' )
8 - 1 /2 "O W S - J ( 7 B I T S U S E D )
6 9 . 2 5 H R3 . 9 F T / H R
F T - D R I L L E D ( 2 7 2 ' )
8 - 1 /2 "O W V - J ( 6 B I T S U S E D )
7 1 H R5 . 7 F T / H R
F T - D R I L L E D ( 4 0 2 ' )
8 - 1 /2 "O W C - J ( 8 B I T S U S E D )
9 8 . 2 5 H R8 . 6 F T / H R
F T - D R I L L E D ( 8 6 0 ' )
8 - 1 /2 "W 7 R ( 2 8 B IT S U S E D )
2 8 8 .7 5 H R4 . 2 F T / H R
F T - D R I L L E D ( 1 1 9 0 ' )
8 - 1 /2 "R 1 ( 1 B IT U S E D )
4 . 5 H R1 . 6 F T / H R
F T - D R I L L E D ( 7 ' )
1 09 . 4 3
1 0 . 8
9 . 4
8 0 0 0
L E G E N D
V
A N H Y D R I T E
S H A L E
L I M E S T O N E
S I L T S T O N E
D O L O M I T E
S A N D S T O N E
S A L T
C L A Y S T O N E
V V V
V V V V
I G N E O U S
X X X XX X X XX X X X
P R I M A R Y O B J E C T I V EP
P R O G N O S E D
P R O G N O S E D
F M - 1 ( F R O M C O M P O S I T E L O G )F M - 2 ( F R O M S U M M A R Y C H A R T )
8 - 1 / 2 " H O L E
W I R E L I N E L O G G I N G + 7 " L I N E R / C A S I N G ( O P T I O N A L )
S
S
S E C O N D A R Y O B J E C T I V ES
CENTRAL INDUS BASINMAHARVI BLOCK
MAHARVI - 1DRILLING MONTAGE
RT = 506’ (AMSL)GL = 476’ (AMSL)
19
4.3) GENERAL DRILLING INSTRUCTIONS4.3) GENERAL DRILLING INSTRUCTIONS
Hold pre-spud meeting
Prior to spud in, ensure that the conductor is correctly aligned & centered below the rig rotary table to prevent offset casing wear.
Maintain at least 500 bbls of 12 ppg (appropriate kill mud) in reserve at all times commencing from spud. Maintain hole verticality as straight as possible. If necessary ream hole section repeatedly to reduce angle. Survey frequency should be increased if hole deviation becomes a problem. Time spent on drilling with low weights and reaming to reduce angle would prevent problems with casing wear in later stages.
All casing strings must be hung in tension to reduce the effect of helical buckling on the casing. The slips should be set with ± 70% of casing hanging weight in mud.
Maximum internal test pressure to be applied to any casing string must not exceed 65% of the casing burst rating taking into consideration the fluids inside and outside the casing string.
Maximum external test pressure to be applied to any casing string must not exceed 75% of the rated collapse pressure. These ratings can only be increased after specific instructions received from head office.
Drill pipe-casing protector must be used during drilling 8½ hole section. At no time should drill pipe fitted with protector be allowed to enter into open hole.
Extreme care should be taken at all times while tripping. Swab/surge pressures can cause serious problems, especially when a delicate balance between losses and inflows exist. Consequently during critical conditions, swab/surge pressure, pulling/running speeds must be determined and used as a guide in these situations.
Regular well control drills should be carried out from below the 9⅝ casing shoe. These drills should be noted in the IADC drilling reports & proper record maintained at the rigsite.
During all long string cement jobs, every precaution must be taken to prevent cement from hardening in the wellhead sections. Immediately after displacing cement, the wellhead sections must be thoroughly flushed out to remove any excess cement displaced or channeled to the surface.
SCR should be recorded as per directions in section 7.1.
Work instructions should be issued in written form to drilling contractor and other service personnel. A proper record to be maintained at the rig site of such documents.
It would be appreciated if good drilling practices are followed with special emphasis on safety measures.
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
20
4.4) 12 ¼4.4) 12 ¼ HOLE (SURFACE TO ± 1,917 ft) HOLE (SURFACE TO ± 1,917 ft)
4.4.1) SECTION OBJECTIVE
The main objective of the 12 ¼ section is to set a competent casing string to provide well control for the continuation of the drilling to the next casing seat. The other objective is to isolate surface aquifers and seal off the loose / top sediments of Siwaliks.
4.4.2) DRILLING 12 ¼ HOLE Carry out full inspection of rig in accordance with the checklist available with the
Company Man and rectify all shortfalls.
Check that the conductor pipe is centralized.
Prepare spud mud. Install cellar-jetting system. Before spud in of the well check entire mud hook up.
Nipple up the bell nipple and flow line.
Function test rig components & pressure test H.P lines at 3500 psi.
M/u and rack back stands of DC’s & 5” HWDP’s required for the BHA, & around 75 stands of 5” DP’s in derrick.
Arrange pre-spud meeting to be chaired by Senior OPII representative. All the aspects of the well operations and materials to be thoroughly discussed and recorded.
Spud in well, drill initial 100 ft with low rpm and flow rate.
Drill 12 ¼ hole down to ± 1,917 (9⅝ casing shoe depth).
Drill hole with lightweight on bit to ensure vertical hole.
Circulate out Hi-Vis pills to ensure hole cleaning as required.
Take deviation survey after every 250 interval and on bit change depending upon hole condition.
At the Section T.D. sweep hole with Hi-Vis pill and spot 20 bbls Hi-Vis pill at bottom.
POOH for casing.
Rig up and run 9⅝ casing. Carry out cement job as per program. Complete work on wellhead and pressure test all pressure control equipment.
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
21
4.4.3) INSTRUCTIONS WHILE DRILLING 12¼ HOLE
Keep the mud rheology and pumping rate to effectively lift the cuttings to surface.
Continuously run solids removal equipment in order to effectively control mud rheology including mud weight in order to minimize loading of mud with solids and to minimize possibilities of losses, cavings & washouts.
4.4.4) RUNNING 9⅝ CASING
R/UP to run casing and hold pre job safety meeting.
Run 9⅝ casing.
Carry out cement job as per program.
Cut conductor casing.
If needed, carry out top cement job so that the wellhead area is properly anchored and sealed.
Wait on cement 06 Hrs.
If the cement does not appear on surface, conduct Top Cement Job.
Cut 9⅝ casing. Install & weld wellhead and pressure test weldment at ±1000 psi.
N/UP, function and pressure test 13⅝ BOP stack.
Install wear bushing.
4.4.5) INSTRUCTIONS FOR 9⅝ CASING JOB
Prior running in casing, condition mud and circulate till shale shakers are free from cuttings.
Prior running in casing drift and visually inspect each joint on rack for any damaged threads. Measure casing on rack, make up float shoe and install stop collars on the rack.
Thread-lock shoe with first casing joint.
Fill up casing string with mud after every 2 to 3 joints. Monitor and record hook load before and after filling casing with mud.
While running in casing avoid shock load to casing string and cautiously land the string in slips.
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
22
Adjust casing tally prior to running in hole to avoid coupling at casing cutting point.
Slack 2 – 5T weight on sting in adapter.
Circulate through stinger to check any leakage from 9⅝ x 5 annulus prior to start pumping cement slurry.
Chain down casing and drill pipes to avoid floating action.
Install centralizers as per casing program.
Check wellhead and 7 casing hanger profile for any damage etc. prior to installation.
After WOC cut and dress 9⅝ casing joint. Weld and pressure test weldment of 9⅝ x 5K casing head housing at 1000 psi.
Complete work on wellhead, N/UP BOP and all pressure control equipment. Pressure test as per details mentioned in Section 8.
Time spent on wellhead should be reduced by efficient planning and preparation.
Install wear bushing prior to RIH with 8½ bit.
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
23
4.4.6) WH & BOP STACK– AFTER PHASE – 1
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
Casing Head Assembly11 5K Top x 9⅝ SOW Btm
Cross over Spool13⅝ 10K Top x 11 5K Btm
Mud Cross13⅝ 10K Top x 13⅝ 10K Btm
Lower Pipe Ram 10K
Blind Ram 10K
Upper Pipe Ram 10K
Annular BOP 5K
Flow Riser
24
4.5) 8½4.5) 8½ HOLE (± 1,976 ft TO ± 7,300 ft) HOLE (± 1,976 ft TO ± 7,300 ft)
4.5.1) SECTION OBJECTIVE
The objective of this section is to case off the SaltRange Formation / Khewra Sandstone, which will enable to control the properties of mud system in the reservoir section. Well directionality is critical in this section and all surveys will be plotted and verified to ensure the well bore positional uncertainty places it in the target area.
4.5.2) DRILLING 8½ HOLE
RIH with 8½ PDC bit with stabilized BHA to top of 9⅝ casing shoe and test casing at 1500 Psi (SAP).
Drill out cement/shoe and cement in rat hole.
Pump 20 bbls of water ahead and displace spud mud with KCl PHPA polymer mud.
Drill out new formation to 1,986 ft. Pull back to shoe, rig up cementing unit for formation integrity test (FIT). Make sure that mud is properly homogenized before conducting FIT.
Conduct FIT at 12ppg EMW.
Apply lower drilling parameters while stabilizers are inside the casing.
Pump Hi-Vis pills to ensure hole cleaning after drilling every 2-3 stands or as required.
Conduct deviation survey after every 250 / 500 ft and on bit change depending upon hole condition.
At section T.D. ± 7,300 ft sweep hole with a Hi-Vis pill.
Conditioning trip to be done with same BHA used in drilling.
Spot 30 bbls Hi-Vis pill at bottom prior to POOH for logging.
POOH.
Conduct logs as per program.
Retrieve wear bushing & change one set of D.P. ram with 7 casing ram.
R / u to run 7 casing.
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
25
4.5.3) INSTRUCTIONS FOR DRILLING 8½ HOLE
Keep the mud rheology and pumping rate to effectively lift the cuttings to surface.
Prior using PDC Bit ensure the hole is clean from any steel junk/debris etc.
Due to high rate of penetration while drilling with PDC Bit, hole cleaning is of prime importance. Therefore, observe and ream hole on connections and sweep hole with Hi-Vis after drilling every 2 to 3 stands.
Continuously run solids control equipment in order to effectively control mud rheology.
Monitor and record upward and downward over pull / drags while drilling this hole section.
4.5.4) RUNNING 7 CASING
Retrieve wear bushing from 9⅝ casing head housing.
Run casing to section T.D. and circulate. Casing not to be rotated.
Perform cement job as per cementing program.
Flush BOP’s, wellhead with water by opening side outlet valve on CHH.
N / d bell nipple and lift BOP stack.
Set slip and seal assembly as per instructions of wellhead engineer.
Cut and dress 7 casing. Use cold cutter if available.
Install and test tubing spool as per wellhead manufacturer’s specifications.
N / u BOP stack, change casing rams to DP rams and test. (Test pressure rating attached)
N / u bell nipple and the flow line.
Install wear bushing in 11 tubing spool bowl.
.
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
26
4.5.5) INSTRUCTIONS FOR 7 CASING JOB
Prior to running in, drift casing and visually inspect each joint on rack for any damaged threads. Measure casing on rack, make up Float Shoe, Float collar and stop collars on the rack.
Thread lock shoe, float collar and bottom three joints. Fill up the casing with mud after every 4 to 5 joints. Monitor and record hook load before and after filling casing with mud.
Calculate volumetric efficiency of mud pumps to be used for displacement.
While running in casing avoid shock load to casing string and cautiously land the string in slips.
Minimize rat hole to avoid down hole problems. For this adjust casing tally prior to running in hole.
Install centralizers as per casing program.
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
27
4.5.6) WH & BOP STACK – UP AFTER PHASE – 2
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
28
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
Casing Head Assembly11 5K Top x 9⅝ SOW Btm
9⅝Casing
Tubing Spool11” 5K Top x 11 5K BtmW/- NX Btm. Prep for 7 csg.
Mud Cross13⅝ 10K Top x 13⅝ 10K Btm
Lower Pipe Ram 10K
Blind Ram 10K
Upper Pipe Ram 10K
Annular BOP 5K
Flow Riser
7Casing
DSA11” 5K x 13⅝ 10K
29
4.7) BIT PROGRAMME4.7) BIT PROGRAMME
BIT SIZE DEPTH INTERVALDESCRIPTION OF
BITSQTY. NOZZLE
12¼Surf. to 1,917 ft
Mill toothIADC 117 & 217
21 x 14/32
+3 x 18/32
8½ 1,917 ft to 7,300 ft
PDC: 7 Bladed
PDC: 6 Bladed2
6 x 12/32
5 x 12/32
TCI: IADC: 517
2 3 x 14/32
6 For clean out & Drilling Optional.
Milled ToothIADC: 517/537 IADC: 117/127
23 x 14/32 &
Open
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
30
4.8) DRILLING PARAMETERS4.8) DRILLING PARAMETERS
Hole size WOB RPMFlow rate
(GPM)SPP (PSI)
12 ¼ (TCI) 1 – 5 60-90 200-400 100 – 1400
8 ½ (PDC) 5 – 10 70-100 400 – 500 1500 – 2500
8 ½ (TCI) 5 – 10 70-100 450 – 550 1500 – 2500
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
31
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
4.9) DRILL PIPES
OD IDGRAD
E
Wt./ft. (lbs./f
t.)
Capacity
(bbl/ft.)
Metallic Displacem
ent (bbl/ft.)
Torsional
Yield Strength (ft. lbs)
Tensile Yield Streng
th (lbs)
Torsional
Collapse
Pressure
(Psi.)
Tensile
Burst Pressure
(Psi.)
5 4.276
E-75X-95
G-105S-135
19.5 0.01776 0.0071
41, 16752, 14457, 63374, 100
395, 595501, 087553, 833712, 070
9, 96212, 02612, 99915, 672
9, 50312, 03713, 30417, 105
3 ½ 2.764
E- 75X- 95
G- 105S- 135
13.30 0.0074 0.0048
18, 55123, 49825, 97233, 392
271, 569343, 988380, 197488, 825
14, 11317, 87719, 75825, 404
13, 80017, 48019, 32024, 840
32
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
33
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
4.10) BOTTOM HOLE ASSEMBLY
Bit Size
Bit sub (with
recess)/ NB stab
DrillCollar
String Stab
Drill collar
String Stab
Drill Collar
Cross
over
Drill Collar
JarDrill Colla
r
Cross
over
HWDP
12¼ 1/1 8 x 2 1 8 x 5 - - - - 8 8 x 2 1 5 x 12
8½ 8 x 16½
NMDC x 1
8 x 16½ DC
x 28 x 1 6½ x 10 - - 6½ 6½ x 3 1 5 x 12
34
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
4.11) MUD PARAMETERS
Hole
size
Mud Type
Density
(ppg.)VIS
Gel10
sec/10min
Cake W/L PV YP PH % S
% Oil
12¼
Bentonite
Spud mud
8.6 - 9.2 60-70 - - - - - 8.5+ - -
8½
5% KCL –
Polymer Non
damaging
9.0 – 10.0 50-55 4-5/12-
151
Less than 5cc
18 - 2020 – 25
8.5-9.5 Min 0
Note: KCL –Polymer PHPA will be used to drill shale section upto +/- 4500 ft
Mud system will be replaced with salt saturated mud while drilling in the salt range. while drilling in the salt range
35
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
4.12) HAZARDS SUMMARY4.12) HAZARDS SUMMARY
Hole Size Interval Hazards Mitigation
12¼ Surface - 1,976 Loss circulation High ROP – hole pack off
LCM material Mud rheology – control
ROP high pump rates
8½ 1,976 - 7,300
Reactive shales Well Bore Stability – Stuck Drill
Pipe High ROP – hole pack off Missing geological target Hydrocarbon kick/swab kick
Inhibitive mud system (PHPA) polymer
Salt range will be drilled with slat saturated mud
Mud Type, Weight, Selection and Maintenance
Mud rheology, flow rates and controlled ROP
Surveying/ correction run
36
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
4.13) CASING PROGRAMME4.13) CASING PROGRAMME
Hole size
Casing OD
Specification
Cased Interval
Pressure
Test
ShoeTrack
CentralizersFloat
Equipment
12¼ 9⅝ 47 PPF, L-80, BTC
1,976 to surface 1500 Psi 2 jts 1 SB in 16 cond. 1 SB x 5 jts 1 SB on shoe jt
Float shoe –1 conventional
Float collar- 1 conventional
Plugs Top and Bottom 1 each
8½ 7 29 PPF, L-80 TPCQ
7,300 to surface 3000 Psi 2 jts
3 Rigid inside 9⅝ csg.
1 SB x 5 jts over coupling
1 SB x coupling in shoe track
1 SB on shoe jt
Float shoe –1 conventional
Float collar- 1 conventional
Plugs Top and Bottom 1 each
Note: Final Centralization program will be conveyed by the Head Office at the time of casing
37
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
CASING OD
SPECIFICATION
BODY YIELD
STRENGTH
(1000lbs)
INTERNAL YIELD
PRESSURE
Psi.
COLLAPSE RESISTANC
E
Psi.
9⅝47 lbs/ft
L-80BTC
1086 6870 4760
729 lbs/ft
L-80TPCQ
676 8160 7020
4.14) CASING SPECIFICATIONS4.14) CASING SPECIFICATIONS
38
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
SSECTIONECTION 55GDOGDO
39
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
40
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
C O N C E S S I O N A R E A :
T Y P E O F W E L L :
C O - O R D I N A T E S : D R I L L I N G R I G : G L O B A L D R I L L I N G7 2 ° 5 5 ' 5 5 . 7 5 8 9 " E
E X P L O R A T O R Y
M A H A R V I E . L .
2 9 ° 5 1 ' 3 2 . 9 8 1 7 " N
M A H A R V I B L O C K ( L O C A T I O N M A P )
S P U D E D O N :
E L E V A T I O N :
P R O G N O S E D T D .
L O C A T I O N :
R T : 5 0 6 F T ( A M S L )
L I N E 2 0 0 7 - M R V - 7 , S P 1 5 7 4
G L : 4 7 6 F T ( A M S L )
7 3 0 0 ' R T ( 6 7 9 4 ' S S )
D I S T R I C T :
P R O V I N C E :
( S C A L E : = 1 : 6 , 0 0 0 )
M A H A R V I - 1G E O L O G I C A L D R I L L I N G O R D E R
DE
PT
H I
N F
EE
T
HO
LE S
IZE
& V
OLU
ME
CA
SIN
G S
ET
TIN
G D
EP
TH
SA
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CE
ME
NT
PO
SIT
ION
FO
RM
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ION
LIT
HO
LOG
Y
CO
RE
S
W E L LC O N S T R U C -
T I O NG E O L O G I C A L D A T A
L I T H O L O G Y( D E S C R I P T I O N )
OB
JEC
TIV
ES
+ E
XP
EC
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ST
RU
CT
UR
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CO
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FO
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PR
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SU
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PR
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AB
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& G
AS
SH
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S
PR
ES
SU
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S
TE
RM
S O
F M
UD
WE
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T
PV
/ Y
P (
CP
S /
LB
S /
100
FT
)
PH
OIL
(%
)S
OLI
DS
(
%)
CA
KE
(M
. M)
WA
TE
R L
OS
S (
C.C
. / 3
0 M
INS
)
GE
L, 1
0 S
EC
. 10
MIN
. (LB
S/1
00F
T.)
F.
VIS
CO
SIT
Y (
SE
CO
ND
/ Q
RT
.)W
EIG
HT
(P
PG
)
TY
PE
OF
MU
D
FO
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LIN
G
2
FO
R O
PE
NIN
G H
OLE
B I TS I Z E
&T Y P E
WE
IGH
T O
N B
IT(K
lbs)
RO
TA
RY
(R
PM
)D
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LIN
G P
IPE
S
DR
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NG
CO
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RS
BO
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SS
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DR
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GC
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NO
. O
F L
INE
S
M U D P A R A M E T E R S D R I L L I N G P A R A M E T E R S
M U D H Y D R A U L I C S
NO
& T
YP
E O
F P
UM
PS
LIN
ER
SIZ
ES
(IN
CH
ES
)
ST
RO
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S /
MIN
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E
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SIZ
E (
INC
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S)
JET
NO
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LE V
EL
(FT
/SE
C.)
AN
NU
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VE
LOC
ITY
AR
OU
ND
D/ P
IPE
S (
FT
/ M
IN.)
ST
AN
D P
IPE
PR
ES
SU
RE
(P
SI)
PU
MP
OU
T (
GP
M)
R E M A R K S /
P R O D U C T I O N T E S T I N G / W R I T E U P
1 2 3 4 5 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8
LOG
GIN
G P
RO
GR
AM
ME
CO
MP
LIC
AT
ION
DU
RIN
G
DR
ILLI
NG
39 4 0
1 0 0 0
2 0 0 0
7 , 0 0 0
6 , 0 0 0
3 0 0 0
4 0 0 0
N O
R M
A L
H Y
D
R O
S
T A
T I
C
P
R E
S S
U R
E
BH
C -
GR
DLL
- M
SF
L -
BH
C -
GR
- S
P
8.5
+
60
- 70
8.6
- 9
.2
BE
NT
ON
ITE
SP
UD
MU
D
12-
1/4
"
(10
Klb
s)
60
- 90
5"
8"
x 9
256
60
- 80
100
- 1
40
0 P
SI
200
- 4
00
20
- 25
8.5
- 9
.5
-
MIN
IMU
M
1
L E
S S
T
H A
N
5
C .
C .
4 -
5
/
1 2
-
1 5
50
- 55
9.0
- 1
0.0
PP
G
5"
6 -
1/2
" x
15
T D . 7 3 0 0 ' R T ( 6 7 9 4 ' S S )
B A H A W A L N A G A R
P U N J A B
10
180
mm
80
- 12
0
10
NO
RM
AL
HY
DR
OS
TA
TIC
PR
ES
SU
RE
9-5/
8'' C
AS
ING
@ 1
917'
RT
12-
1/4
" B
IT +
NB
ST
AB
+ 2
x 8
" D
C +
S.S
TA
B +
5 x
8"
DC
8"
JAR
+ 2
x 8
" D
C +
XO
+ 1
2 x
5" H
WD
P
2 x
Tri
ple
x H
HF
- 1
600
HP
18/
32, 1
8/3
2,1
8/32
, 14/
32
NO
ST
RU
CT
UR
E C
OM
PL
ICA
TIO
NS
AR
E E
XP
EC
TE
D
5%
KC
L P
OLY
ME
R
8-1
/2"
TC
I: (
10
- 25
Klb
s) /
PD
C: (
10 -
25
Klb
s)
TC
I: (
70
- 10
0)
/ P
DC
: (8
0 -
120)
8-1
/2"
BIT
+ N
. B. S
TA
B +
1 x
6-1
/2"
NM
DC
+ S
. ST
AB
+ 2
x 6
-1/2
" D
C +
(400
- 5
00
TC
I)
(4
50
- 55
0 P
DC
)
150
0 -
25
00
200
- 2
50
250
- 3
00
PD
C (
6 x
12
/ 3
2",
5 x
12
/ 3
2")
( 3
x 14
/32"
) T
CI
120
S.S
TA
B +
10
x 6
-1/2
" D
C +
6-1
/2"
JAR
+ 2
x 6
-1/2
" D
C +
XO
+ 1
2 x
5" H
WD
P
160
- 1
80
mm
X X XX X XX X XX X XX X X
v v v
v v v
v v v
v v v
v v v
v v v
v v v
v v v
1 9 1 7 '
2 0 8 4 '
2 2 1 2 '
2 6 6 1 '
3 6 8 8 '
4 8 3 7 '
3 1 5 4 '
3 3 8 0 '3 4 2 6 '
7 0 0 2 '
D O M I N A N T L Y S A N D S T O N E W I T H I N T E R C A L A T I O N O F C L A Y S T O N E .
D O M I N A N T L Y L I M E S T O N E W I T H T H I N B E D S
C L A Y S T O N E W I T H I N T E R C A L A T I O N O F
D O M I N A N T L Y S A N D S T O N E W I T H
S A N D S T O N E W I T H T H I N B E D S O F C L A Y S T O N E .
D O M I N A N T L Y S A N D S T O N E W I T H C L A Y S T O N E
D O M I N A N T L Y S A N D S T O N E W I T H C L A Y S T O N E
P R E D O M I N A N T L Y D O L O M I T E
O F C L A Y S T O N E .
S A N D S T O N E
I N T E R C A L A T I O N O F C L A Y S T O N E
D O M I N A N T L Y E V A P O R I T E S( D O L O M I T E , A N H Y D R I T E A N D S A L T ) W I T H T H I N B E D S O F C L A Y A N D S A N D S T O N E
S A N D S T O N E W I T H I N T E R C A L A T I O N O F
I G N E O U S B A S E M E N T .
L I M E S T O N E , T H I N B E D S O F S I L T S T O N E A N D D O L O M I T E .
SIW
ALI
KS
(+1
887
')B
AS
EM
EN
T (
29
8'+
)
N A M M A L ( 1 6 7 ' )
S A K E S A R +
D A T T A ( 1 2 8 ' )
SA
RD
HA
I (
449'
)W
AR
CH
HA
(49
3')
D A N D O T ( 2 2 6 ' )
T O B R A ( 4 6 ' )
J U T A N A ( 2 6 2 ' )
KH
EW
RA
KU
SS
AK
+
(1
149'
)
SA
LT R
AN
GE
(21
65')
N O T E : T D W I L L B E 7 3 0 0 F T R T O R 2 0 0 F T I N S I D E B A S E M E N T ( W H I C H E V E R I S S H A L L O W E R )L E G E N D
V A N H Y D R I T ES H A L E L I M E S T O N ES I L T S T O N E D O L O M I T ES A N D S T O N E S A L TC L A Y S T O N EV V V
V V V V I G N E O U S
X X X XX X X XX X X X P R I M A R Y O B J E C T I V EP
Z O N E - I I
Z O N E - I I
P A I G E
2 9 7 2 - 4
M A R O T - 0 1
B A H A W A L P U R E A S T( 2 9 7 1 - 5 )
Z O N E = I I2 4 9 5 S q . K m s
P P L
B A H A W A L P U R E A S T - 0 1
S E E P A G EJ U G U W A L A O I L
S U T L E J
1 9 2 7 . 9 4 S Q . K M S
C H O L I S T A N
N A T I V SN A T I V S
1 8 3 8 . 6 0 S Q . K M S
M A H A R V IO P I I
2 9 7 2 - 3
P U N J A BP U N J A B
Z O N E - I I
3 0 7 2 - 4N A T I V S
Z O N E - I I2 5 0 5 . 1 8
3 0 7 3 - 3
Z O N E - I I2 5 0 5 . 1 8
3 0 7 3 - 3
PU
BJA
B P
LA
T F
OR
M
M U L T A N
M U L T A N S O U T HO G D C L
N O O RM G C L
B A G H S O U T H
P I R A N W A L - 0 1P I R A N W A L - 0 1C H A K 1 2 - 0 1C H A K 1 2 - 0 1
K A R A M P U R - 0 1
Z O N E - I I
K A R A M P U R - 0 1
T O L A - 0 1T O L A - 0 1
A L I S H A I B - 1A L I S H A I B - 1N A N D P U RO G D C L
S A R A I S I D H U - 0 1S A R A I S I D H U - 0 1N A N D P U R - 0 1N A N D P U R - 0 1
2 5 3 5 . 4 1 S Q . K M S
S H A K A R G A N J W E S TN A T I V U S
C H I S H T I A N M A N D I
- - - - - -
2 x
Tri
ple
x H
HF
- 1
600
HP
5 0 0 0
X X XX X XX X XX X XX X XX X X
P
P
P
LD
L -
CN
L -
NG
S, S
HD
T -
GR
12-
1/4
"8
-1/2
"
(WA
SH
OU
TS
AG
AIN
ST
SA
LT
WIT
HIN
SA
LT
RA
NG
E F
OR
MA
TIO
N)
M A H A R V I - 1
*
*
S
S
S E C O N D A R Y O B J E C T I V ES
41
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
SSECTIONECTION 66CCEMENTINGEMENTING
42
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
6.1) Specifications6.1) Specifications
Note: Exact volume of cement slurry (tail and lead) and cement recipe will be advised by the Head Office at the time of job.
9⅝ Casing – 1,976 ft 7 Casing – 7,300 ft
Interval: Surf. – 1,976 ft
Open Hole Excess – 150 %
Cementing Method: Conventional
Density – 15.0 ppg
Lead Cmt: Surface – 6,400 ft
Tail Cmt: 6,400 ft – 7,300 ft
Open Hole Excess: 20%
Cementing Method: Conventional
Lead Slurry: 13.2 ppg.
Tail Slurry: 15.8 ppg.
43
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
6.2) ANNULAR VOLUME (bbls / ft)6.2) ANNULAR VOLUME (bbls / ft)
Size Capacity
I n n e r T u b i n gI n n e r T u b i n g
3½ 4¾ 5 6 ½ 7 8 9 ⅝ -
A n n u l u s C a p a c i t y
OH 12¼ 0.1458 - - 0.1215 - - 0.0836 0.0558 -
CSG 9⅝ 0.0732 - - 0.0489 0.0322 0.0256 - - -
OH 8½ 0.0702 - - 0.0459 0.0291 0.0226 - - -
CSG 7 0.0371 0.0252 0.0152 - - - - - -
44
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
SSECTIONECTION 77WWELLELL CCONTROLONTROL
45
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
7.1) GENERAL INSTRUCTIONS7.1) GENERAL INSTRUCTIONS
General Instructions to avoid / combat well control situations:
Record mud weights every 15 / 30 mins as directed.
Monitor well for signs of changing pressures
Record SCR regularly in every shift and specially in the following situations:
1. Significant change of mud properties
2. Change of BHA
3. Change of bit / bit nozzle configuration
4. After changing mud pump liner – piston sizes
5. Before entering into a potential pay zone and after entering into new formations
Before entering a potential high-pressure zone, ensure that the MW is appropriate enough.
Minimize contamination of mud with foreign elements like drill solids / cement / hydrocarbons.
Ensure proper hole fill up during tripping through a properly calibrated trip tank.
Ensure integrity of low-pressure mud system to avoid intercommunication / intermittent dilution.
Maintain reasonable stock of weighting agent (Barite / CaCO3) on location as advised by the Company Man.
Conduct flow-check at following situations:
1. During tripping
2. When at bottom after running in
3. After entering in cased hole from OH while tripping out.
4. Before pulling out BHA.
5. When at surface after pulling out
6. Observing kick warning signs as mentioned above.
46
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
7.2) WARNING SIGNS OF A KICK7.2) WARNING SIGNS OF A KICKObserve for following changes in well behavior so that a potential kick can be handled promptly and safely:
Increase in Flow rate
Increase in Pit Volume
Well not static on flow check
Reduced hole fill up volume during tripping out.
Gas cuts
Drilling break
Erratic torque
7.3) SHUT IN PROCEDURES7.3) SHUT IN PROCEDURES
7.3.1) WHILE DRILLING
If a kick is encountered while drilling, follow the procedure outlined below:
1. Stop drilling.
2. Stop rotation.
3. Raise the string so as to bring tool joint above the rotary table.
4. Stop the pump(s). Observe well & conduct flow check.
5. Close the annular preventer and open HCR valve to the hydraulic choke. Keep the choke lined up for hard shut-in (i-e closed position during normal drilling operations)
6. Inform Company Man, Tool pusher and other crew members.
7. Record the following:
i. Shut-in casing pressure at the choke manifold (SICP)
ii. Shut-in Drill pipe pressure at the standpipe manifold (SIDPP)
iii. The pit gain
Note: Sufficient time must be allowed for the readings to be stabilized before recording. (±30 mins)
47
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
7.3.2) WHILE TRIPPING
If a kick is encountered while tripping, following procedure must be followed:
1. Run down stand to bring tool joint at the rotary table and set slips under it.
2. Install a Fully Opened Safety Valve and close it. Ensure at hand availability of a fully opened safety valve on the rig floor during the entire time of tripping.
3. Close the annular preventer and open HCR to the hydraulic choke.
4. Inform Company Man, Tool pusher and other crew members.
5. Record the following:
i. Shut-in casing pressure at the choke manifold (SICP)
ii. Shut-in Drill pipe pressure at the standpipe manifold (SIDPP)
iii. The pit gain
Note: Sufficient time must be allowed for the readings to be stabilized before recording. (±30mins)
7.4) KILLING METHOD7.4) KILLING METHOD
The underlying principle is to:
Keep the bottom hole pressure constant and just above formation pressure at all times.
Minimize the pressure exerted on the open formations (1st priority), the casing shoe and the BOP
The DRILLER’S METHOD will be employed to combat any kick situation. Following outline procedure shall be adopted:
1. Shut in the well
2. Read & record SIDPP, SICP and pit gain.
3. Brief the crew about the procedure
4. Open the choke and simultaneously start pumping mud (of current weight) at the SCR.
5. Whilst reaching and maintaining the SCR adjust the choke opening until the choke pressure equals the closed-in annulus pressure. Record and keep the choke pressure constant throughout the first circulation.
48
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
6. Read standpipe pressure. It should equal the normal pre-kick pump test circulation pressure at the selected pump speed plus the closed-in drill pipe pressure. If the observed standpipe pressure does not agree with the calculated value, consider the observed pressure to be correct.
7. Maintain constant standpipe pressure and pump rate (SCR) whilst the influx is circulated out.
8. When all influx has been circulated out, stop the pump and close in the well to check the closed-in drill pipe and annulus pressures. At the end of the first circulation the closed-in pressures of the annulus and drill pipe should be the same and equal to the initial closed-in drill pipe pressure. The well is controlled but not killed.
9. Once the drilling fluid has been weighed up to the correct density the second circulation can begin. Prepare kill sheet & pumping schedule (Kill sheet format attached in Section 7.5) format and follow through out the second circulation.
10. Start the pump and circulate kill mud at the SCR. Hold casing pressure constant until the kill mud reaches the bit. At the same time monitor DP pressure against the pump schedule.
11. When the kill mud reaches the bit, hold drill pipe pressure constant at Final Circulating Pressure (FCP) until the weighted mud is surfaced.
12. When the kill mud is surfaced shut off the pump, close the well and check pressures. Both pressures should record “zero”. If so open the well and conduct a flow check. If it is not flowing, the well has been killed successfully. If it flows, follow the killing procedure again.
49
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
7.5) KILL WORK SHEET7.5) KILL WORK SHEET
Date: __________________
Well NameFIT EMW (A) ppg
Initial MAASP Current Drilling Mud((A) - Current MW) x Shoe TVD x 0.052 Weight ppg
= psi
Casing Shoe DataSize "MD ft
bbls / stk bbls / stk TVD ft
OH DataSCR 45 SPM Size "
MD ftTVD ft
LENGTH CAPft bbls / ft
x
x
Drill Collars x
Drill String Volume (D) bbls (E) Strokes Mins
x
x
OH Volume (F) bbls Strokes Mins
DP x CSG. x (G) bbls Strokes
TOTAL ANNULUS VOL. bbls Strokes Mins
TOT WELL SYS VOL. bbls Strokes Mins
TOT ACTIVE SUR. VOL. bbls Strokes
TOT ACT. FLUID SYS bbls Strokes
psi psi bbls
………… + (………… / ……………. x 0.052) = _________
………… + ………… = _________ psi
………… x ………… / ………… = _________ psi
……… - ……… = ________ …… x 100 / …...…… = _________
(D)+(H) = (I)
CURRENT WELL DATA
MUD PUMP DATA
FORMATION STRENGTH DATA
VOLUMEbbls
(PL) Dynamic Pressure Losses
Drill Pipe
PUMP STROKES
PRE-RECORDED VOL DATA
60 SPM30 SPM
TIME
PUMP STROKES SCR
MinsStrokes
V O L U M EPUMP OUT PUT
(F)+(G) = (H)
KMW x Dynamic Losses / Current MW
PRESSURE DROP / 100 STKS (PSI PER 100 STKS)
(J)
(I)+(J)
Dynamic Pressure Losses + SIDPP
FINAL CIRCULATING PRESSURE (FCP)
KICK DATA
SIDPP PIT GAINSICP
KILL MUD WEIGHT (KMW)
(K) = ICP - FCP (K) x 100 / (E)
WELL CONTROL WORK SHEET
Pump OutoutPump 1 Pump 2
Current MW + (SIDPP / TVD x 0.052 )
INITIAL CIRCULATING PRESSURE (ICP)
DC x OH
DP x OH
Pump No. 1Pump No. 2
HWDP
DC
DP
50
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
Pressure(psi)Strokes
PUMP SCHEDULE
DP
Pre
ss
ure
(p
si)
Strokes
51
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
52
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
SSECTIONECTION 88PPRESSURERESSURE TTESTEST
53
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
8.1) PRESSURE TEST WELL CONTROL EQUIPMENTS8.1) PRESSURE TEST WELL CONTROL EQUIPMENTS
BOP SIZE
ANNULAR TYPE RATING
RAM TYPE
RATING
PRESSURE TEST
ANNULAR RAM BLINDCHK /
KILL LINE M / F
13⅝ 5 M 10 MLow : 300 psi
High : 2500 psiLow : 300 psi
High : 4500 psiLow : 300 psi
High : 4500 psiLow : 300 psi
High : 4500 psi
Low-pressure test for 10 min.
High-pressure test for 15 min.
Use test plug to test BOP stack and cup tester for newly installed casing spool, flanges & valves.
Press test casing head housing (through weld test port. 75% of the casing collapse pressure or Well Head Housing rated press which ever is Lower).
54
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
SSECTIONECTION 99PPLUGLUG & &
AABANDONMENTBANDONMENT
55
Maharvi – 1 Drilling ProgramMaharvi – 1 Drilling Program
9.1) OBJECTIVES9.1) OBJECTIVES
To place impermeable tested barriers between deep reservoirs and shallow aquifers / surface. Final P & A will be sent to the well site based on results, testing well bore conditions and formations.
9.2) SEQUENCE OF EVENTS9.2) SEQUENCE OF EVENTS
500' cement plug inside open / cased hole at the top of the sands.
500' plug around 9⅝ (cement as per 9⅝ tail slurry).
300' plug inside 9⅝ casing from 100' to 400'
Test (mechanically & hydraulically) all the cement plugs.
N / d BOP stack and cut off wellhead.
Surface dry cement plug after having removed the wellhead (accelerated setting recipe).
56