Sl. No. Contents Page no. - Oil India€¦ · annual report 2016-17, exploration basin sl. no. contents page no. 1.0 preamble 01 2.0 present operational areas under exploration basin

ANNUAL REPORT 2016-17, EXPLORATION BASIN


Sl. No. Contents Page no.

1.0 PREAMBLE 01

2.0 PRESENT OPERATIONAL AREAS UNDER EXPLORATION BASIN 02-03

3.0 STATUS OF PEL AND ML AREAS IN ARUNACHAL PRADESH 03-05

4.0 STATUS OF NELP BLOCKS 05-06

5.0 MINIMUM WORK PROGRAM (MWP) OF NELP BLOCKS 06

6.0 STATUS OF NELP BLOCKS IN DETAIL 07-08

7.0 GEOPHYSICAL SURVEYS – ACQUISITION, PROCESSING &

INTERPRETATION

09

8.0 GEOSCIENTIFIC STUDIES IN MPA 10-12

9.0 ADDITIONAL STUDIES 13

10.0 ACHIEVEMENTS FROM EXPLORATORY AND OTHER

APPRAISAL DRILLING

14-15

11.0 MISCELLANEOUS TEAM CENTRE JOBS 15

12.0 MAJOR CONTRACTS UNDER EXECUTION 16

13.0 TRAINING PROGRAMS/ WORKSHOPS 17-18

14.0 COST SAVING MEASURES 18

15.0 ENERGY CONSERVATION MEASURES 19

16.0 MANPOWER 19

17.0 OVERTIME 19

18.0 CAPITAL AND SPECIAL REVENUE EXPENDITURE 19

19.0 KNOWLEDGE SHARING 19-20

20.0 STATUS OF SHALE GAS/OIL EXPLORATION PROJECT OF

OIL

20-22

21.0 ACKNOWLEDGEMENT 23

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EXPLORATION BASIN-ANNUAL REPORT, FINANCIAL YEAR: 2016-2017

1.0 PREAMBLE Consequent upon restructuring of the Company w.e.f 1st April 2016, erstwhile North

East Frontier Project (NEF-Project) department became EXPLORATION BASIN

bringing in TEAM (Total Exploration and Asset Management) Centre within its

purview which was earlier an integral part of Geology and Reservoir Department.

The functioning of this department started on April’2004 with an aim to give

focussed attention for accelerated exploration efforts in geologically complex &

logistically difficult North Eastern frontier areas which were earlier carried

departmentally by the respective departments. Presently, Exploration Basin is

looking after 20 PML areas, 3 nominated PEL areas, 3 NELP areas in the states of

Assam, Arunachal Pradesh and Mizoram. Additionally Exploration Basin also looks

after six (06) nominated shale gas PEL/PML blocks & one (01) CBM exploration

block. The second exploratory drilling in Mizoram (Block:AA-ONN-2004/1) area was

completed in August 2016. Advance seismic data processing 400 GLKM data of

nominated PEL/ML areas are completed including Reverse Time Migration (RTM).

The processing and interpretation of seismic data acquired for 130.26 sq.km in

Sadiya area (NELP-IX, AA-ONN-2010/3) was completed as per MWP and one

location has been proposed for exploration drilling. 3D seismic data acquisition for

the NELP-IX block, AA-ONN-20010/2 is in progress. The cable less technology has

been implemented first time in Oil India Limited and executed by Exploration Basin

in the nominated ML/PEL areas. The entire area of the operation under Exploration

Basin including shale gas and CBM exploration block is around 9972 Sq. km. The

details of shale gas and CBM are provided in SL. 21.0 separately. The overall

activities and salient features pertaining to Exploration Basin are highlighted in this

report.

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2.0 PRESENT OPERATIONAL AREAS UNDER EXPLORATION BASIN DEPARTMENT

TABLE: A

Note: Underline & Italic structures fall partly in the ML.*a Formal grant from Govt. of AP is yet to be obtained

Sl.

No.

Name of PML

Structures

Area

(Km2)

PML valid

upto

Exploratory Wells

Completed in FY

2016-17

Assam

1 Baghjan Baghjan, Disaijan, South Baghjan 75.00 13.05.2023 BGN-20, BGN-21, BGN-22,

2 Borhapjan Borhapjan, North Borhapjan 87.00 06.12.2020

3 Borhat Balimara, Baruah Nagar, Titlagarh 81.00 12.08.2033

4 Chabua Chabua, Deohal, Dikom, Kharikatia, Matimekhana, Nadua

189.00 11.06.2022 Dulipara-1, Makalbari-1,

Kharikatiya-1

5 Dholiya Bamunpukhuri, Dholiya, Noahola, Teloijan 131.00 17.10.2022

6 Dibrugarh Bhogpara, Sologuri 186.00 20.01.2018

7 Digboi Digboi, South Digboi 49.33 13.10.2021

8

Dumduma

Balimara, Barekuri, Bogapani, Borbil, Borhapjan,

Duarmara, Hapjan, Hukanguri, Jaipur, Jorajan,

Kusijan, Makum, Namchik, Namrup, North-

Makum, North-Tinali, Samdang, Santi, Sapkaint,

South-Tinali, Sarojini, Tarajan, South-

Chandmari, Shalmari, Tinali, North Hapjan

503.73

25.11.2029

Hapjan-67,

Balimara-3

9

Hugrijan

Hugrijan

Bachmatia, West-Bachmatia, Bazaloni,

Bhekulajan, Bordubi, Chabua, Deohal, Dikom,

Digholia, East Bhadoi, East-Langkasi, East-

Kathaloni, East-Khagorijan, Ghugoloni, Hapjan,

Hatiali, Jengoni, Jorajan, Jutlibari, Kamkhat,

Kuhiarbari, Kasomari, Kathaloni, Kathalguri,

Langkasi, Lohali, Madarkhat, Madhuting-Tipling,

Mahakali, Makum, Mohanbari, Nadua,

Nahorkatiya-Main, Nagajan, North-Balijan, North-

Hapjan, Rungoliting, Rajali, Singhbil, South-

Kathaloni, Tamulikhat, Tengakhat, Tinali, Tingrai-

Chariali, Uriamguri, Zaloni

725.20

725.20

09.01.2021

09.01.2021

NHK-633, Makum-

59, Makum-60,

NHK-639

10 Mechaki Mechaki 195.00 18.05.2023

11 Mechaki

Extn.

West-Mechaki 9.00 05.07.2030 Mechaki-5

12

Moran

Dimowkinar, Batuya, Borbhuibil,

Dikharipathar, Dipling, Haldibari, Khatkhati,

Lakwagaon, Madhakali, Moran, Thowra

429.42

09.01.2021

Lakwagaon-1,

Borbhuibil-1

13

Moran

Extension

Dipling, Diroi, Rajgarh, Sapekhati, Sarojini, South-

Rajgarh

560.00

31.10.2026

14 Naharkati

ya

Naharkatiya-Main 1.42 03.02.2024

15

Naharkati

ya

Extension

Amgurigaon, Balogaon, Bhadoi, East-Rajali, Jaipur, Madhuting-Tipling, Naharkatiya-Main,

Santi, West-Bachmatia, West-Zaloni, Zaloni,

Barekuri

165.76

09.01.2031

16 Sapkaint Sapkaint,Tinali,Umatara 105.00 23.12.2027 Umatara-2

17

Tinsukia

Bismile, East-Khagorijan, Jeraipathar, Khagorijan,

Matimekhana, Rangmala

250.00

06.12.2021

Kharjan-1

18

Tinsukia

Extension

Barekuri 185.00

16.05.2023

Barekuri-20

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TABLE: B

AREAS NAME OF THE BLOCK AREA (SQ.KM)

ML AREAS: Ningru ML 540.668

Ningru Extension ML 58.55

PEL AREAS:

Jairampur Extn. 23.25

Namchik 195

Deomali 113.5

NELP BLOCKS

MZ-ONN-2004/1, NELP-VI, Mizoram 3213

AA-ONN-2010/2, NELP-IX, (Karbi-Anglong) 396

AA-ONN-2010/3, NELP-IX, (Sadiya) 171

3.0 STATUS OF PEL AND ML AREAS IN ARUNACHAL PRADESH

The status of various nominated PELs and Ningru Mining Lease pertaining to Exploration Basin are given below (Table -1).

Table-1

Sl.

No.

PEL/ML/

Block

Area (in

Sq.km)

Validity Present Status (As on 31.03.2017)

1

Namchik

PEL

195.00

24.09.2020

Forest clearance for Loc.NCK-1

obtained on 02.03.2016.Approval for

handing over the land to OIL has

already been received from Govt. of

Arunachal Pradesh vide letter No.

FOR.309/Cons/2010/1179-87 dated

16.08.2016. Land takeover process

from DFO, Jairampur is in progress.

Land (2.98 hact) handed over to OIL

on 22.10.2016 and possession of the

land made on 24.10.2016, vide letter

no.NP/07/740-41 from Govt. of

Arunachal Pradesh dated

22.10.2016. Civil construction job

is under progress.

Seismic data acquisition completed

in Namchik PEL on 07.05.2016.

Cumulative progress is 75.92

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GLKM

2

Jairampur

Ext. PEL

23.25

03.03.2019 2D Seismic data acquisition started

in JairampurExtn.PEL on

24.06.2016. Data acquisition could

not be completed in this area due to

very difficult terrain & expiration of

the seismic service contract.

Cumulative progress is 5.20 GLKM.

Final civil survey for Loc. JRB

completed. However, it has been

observed for surface accessibility

point of view that total area required

for Loc.JRB is 17.15 hect. (Earlier it

was 8.710 hect.). Accordingly, revised

FC submitted to PCCF, Itanagar on

01.08.2014.FC proposal with

recommendations forwarded to MoEF

Regional Office at Shillong on

14.12.2016 by Principal Secretary,

Govt. A.P for approval. Approval of

the matter is pending.

3

Deomali

PEL

113.50

25.07.2019

Civil survey & demarcation of Loc.

DML2 completed. Waiting for

Forest Clearance. Joint inspection

of Loc.DML2 carried out on

12.01.2016. DFO’s submitted its

report to CCF, SAC, Deomali on

06.05.2016. CCF submitted his

report on 17.05.2016. Proposal is

under process at the office of Nodal

officer, Itanagar. As advised by CCF

(Cons) and Nodal officer, Itanagar,

proposal for Loc DML2 is uploaded in

the MoEF’s website on 21/11/2016.

Required NBWL (National Board for

Wildlife) clearance.

Seismic data acquisition completed

in Deomali PEL on 11.03.2017.

Cumulative progress is 74.32

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GLKM

4

Ningru

PML

&

Ningru

Extn

PML

540.668

58.55

--------

A letter with various justifications has

been submitted to the Dept. of

Environment & Forests, Govt. of

Arunachal Pradesh on 11.07.2016

for re-grant of Ningru

Petroleum Mining Lease covering

540.668 sq.km area to OIL.

Nodal officer, Dept. of Environment &

`Forest, Arunachal Pradesh wrote to

Ministry of Environment Forest &

Climate Change (MOEFCC) on

26/08/2016 recommending

/requesting of Forest clearance

towards re-grant of Ningru Mining

Lease.

Minister Geology & Mines, Govt. of AP

wrote to MOEF&CC for early

issuance of forest clearance towards

re-grant of Ningru Mining lease. The

matter was discussed with FAC

(Forest Advisory Committee) meeting

of MOEF&CC on 9th November, 2016.

However, approval of the matter is

pending.

4.0 STATUS OF NELP BLOCKS The following NELP blocks in North-East India (Table-2) acquired by OIL in different round of NELP biddings are presently operated by Exploration Basin: TABLE-2

NELP Block Area (Sq

km)

PEL Validity (till Phase I/

II

Participation Interest

(PI)

Mizoram

(NELP-VI)

3213 Block validity expired on

24.10.2016

OIL: 85 %

Shiv-Vani: 15%

(OIL is the Operator)

Karbi-Anglong

(NELP-IX)

396

PSC signed on 28.03.2012.

PEL Signed on 27.12.2014

Phase-I valid upto

OIL:50%

ONGCL:30%

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28.12.2019 GAIL:20%


Sadiya

(NELP-IX)

101 PSC signed on 28.03.2012

PEL signed on 12.12.2013

Phase-I valid till 11.12.2018

OIL: 40%

ONGCL:40%

BPRL:20%


5.0 MINIMUM WORK PROGRAM (MWP) OF NELP BLOCKS

The Minimum Work Program (MWP) for phase –I for each of the NELP Blocks

operated by Exploration Basin Department is given below (Table-3):

TABLE-3 BLOCK NAME PHASE-I

(EFFECTIVE DATE)

MWP

MIZORAM

MZ-ONN-2004/1)

Area: 3213 Sqkm

OIL(85% PI & Operator)

SHIV-VANI: 15% PI

PSC signed on 02.03.2007

&

PEL granted on 22.05.2007

Phase-I: 5 Years

(22.05.2007 to 21.11.2012)

Block validity expired on

24.10.2016. Applied for 3 years

special dispensation and same is

under consideration of DGH.

2D API : 975 GLKM

3D API : 600Sqkm

Gravity Magnetic Stations: 2500

Geochemical Samples: 500 Nos.

Geological Survey : 500 Sqkm

Exploratory Drilling: 5 Wells

SADIYA

(AA-ONN-2010/3)

Area: 171 Sqkm

OIL’s PI: 40% (operator)

ONGCL’s PI: 40%

BPRL’s PI: 20%


PEL granted w.e.f.

12.12.2013

Phase-I: 5 Years

3D API : 101Sqkm

Exploratory Drilling: 1 Well

KARBI-ANGLONG

(AA-ONN-2010/2)

Area: 396 Sqkm

OIL’s PI: 50% (Operator)

ONGCL’s PI: 30%

GAIL’s PI: 20%


PEL granted w.e.f.

29.12.2014

Phase-I: 5 Years

3D API : 396 Sqkm

Exploratory Drilling: 2 Wells

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6.0 STATUS OF NELP BLOCKS IN DETAILS The work carried out for each of the NELP Blocks mentioned above during the year under review are summarized below:

1.1 MIZORAM BLOCK (MZ-ONN-2004/1)

The onshore Mizoram Block MZ-ONN-2004/1 was awarded jointly to the

consortium of M/s Oil India Limited (OIL), M/s Shiv-Vani Oil & Gas

Exploration Limited (SOGEL) and M/s Suntera Resources Limited (SRL) in

NELP-VI round of exploration bidding in 2007 with participating Interest (PI)

of 75%, 15% and 10% respectively. Subsequently, after withdrawal of M/s

SRL from the Consortium, OIL took over the PI of M/s SRL and accordingly

present PI configuration of the block is - OIL-85% and M/s Shiv-Vani-15%.

OIL is the Operator for the Block. The PSC of the Block was signed on

02.03.2007 and PEL was granted w.e.f. 22.05.2007.

After detail G&G study Five (05) exploratory locations were released by the

Competent Authority. Out of five (05) exploratory locations drilling of two

locations has been completed.

Well: Aibawk-1 (Loc. MZ-3): One exploratory drilling spudded on 06.07.2014.

Well drilled up to 4153m. Well permanently abandoned due to discouraging

testing results of five (05) zones.

Well: Keifang-1(Loc.MZ-1): Well spudded on 12.12.2015. The Well reached to

the final depth of 3802m. Combined evidences of drill cutting samples, log

analysis & side wall core analysis indicated no zones that merit testing. MDT

survey was also not possible due to large-hole condition in the sand ranges.

View above, it was decided to abandon the well without running in final stage

of casing. The Competent authority has approved the abandonment of the

well.

OIL appeal to DGH for 3 years special dispensation to complete the remaining

work programme of Phase-I. It is under consideration of MoP&NG.

1.2 KARBI-ANGLONG (AA-ONN-2010/2)

The NELP block AA-ONN-2010/2 was awarded to the Consortium of OIL (PI:

40% & Operator), ONGC (PI: 30%), GAIL (PI: 20%) and M/s East West

Petroleum, Canada (PI: 10%) during IXth round of bidding. The PSC of the

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block was signed on 28.03.2012 and the PEL of the block was signed with

Government of Assam on 29.12.2014. Accordingly, the Phase-I of the block is

valid up to 28.12.2019 with Minimum Work Commitment (MWP) of

acquisition of 396 sq. km. of 3D and drilling of two (02) wells of 5000 mtrs

each within Phase-I period.

Subsequently, after signing the PEL, M/s East West Petroleum Canada,

expressed their willingness to exit from the block AA-ONN-2010/2 and

approached all consortium partners (OIL, ONGCL and GAIL) for acquiring

10% Participating Interest. DGH by vide letter no. DGH/PSC/AA-ONN-

2010/2/1013/PI transfer dated 27.01.2017 approved 10% PI transfer from

M/s. EWPC to Oil India Limited. Amendment of PSC is in progress.

The Contract has been awarded to M/s Advent Oilfield Services Pvt. Ltd.,

Gurgaon for carrying out 396 sq.km 3D seismic survey. Forest permission

obtained on 22.12.2016. Mobilization completed & production shooting

started on 23.12.2016. Cumulative progress is 74.3 Sq km.

1.3 SADIYA (AA-ONN-2010/3)

The NELP block AA-ONN-2010/3 was awarded to the Consortium of OIL (PI:

40% & Operator), ONGC (PI: 40%), and Bharat Petro Resources Ltd. (BRRL)

(PI: 20%) during IXth round of bidding.

As per MWP 101sqkm 3D API has been completed by OIL’s In-house team.

One Location has been identified for exploratory drilling and it is under

review by the consortium.

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7.0 GEOPHYSICAL SURVEYS-ACQUISITION, PROCESSING & INTERPRETATION

TABLE-4

Sl. No. Area PEL/ML/NELP

Block

RE Target for 2016-17 (Sq km/

GLKM)

2D/ 3D

Achievements in 2016-17 (Sq km/

GLKM) Service Company

Cumulative Progress as on 31.03.2017 (Sq

km/ GLKM)

Remaining work to Achieve in

Future

Remarks/ Reason of Shortfall

1 Arunachal Pradesh

Namchik, Deomali+ Jairampur Ext

119.6 GLKM Data Acquisition

2D 95.04 GLKM M/s Asian Oilfield Services, Gurgaon

60.4 GLKM (FY15-16) + 95.04 GLKM(FY16-17)=155.44 GLKM

(180-155.44) GLKM=24.56 GLKM

Remaining work could not be completed due to end of the contract.

2 Arunachal Pradesh

Namchik + Deomali

400 GLKM Data Processing

2D 400 GLKM M/s GT, Poland …… Nil Completed

3 Mizoram MZ-ONN-2004/1

600 Sq km 3D Seisloop data processing & Interpretation

3D Nil M/s Geofyzika Krakow, Poland

…….. …….

Contractor informed that they are not in position to complete the processing & interpretation work due to liquidation of the company.

4 Karbi-Anglong

AA-ONN-2010/2 140Sqkm Data Acquisition

3D 74.3 Sq km M/s Advent Oilfield Services, Gurgaon

74.3Sqkm

(140-74.3) Sq km=65.7 Sq km + 256 Sq km=321.7 Sq km

Acquisition under progress. EDC of the work is 28.02.2019

5 Sadiya AA-ONN-2010/3

130.26 Sq km 3D seismic data processing & Interpretation

3D 130.26 Sq km In-house services …… Nil Completed

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8.0 GEOSCIENTIFIC STUDIES IN MPA:

Exploration Geological Note-958 (South Baghjan):

Subsequent to the discovery in well South Baghjan-1, the South Baghjan area

has been reviewed for appraisal/extension drilling. Based on the present review,

one (1) appraisal location has been proposed in this note to know the extent of

Paleocene-Lower Eocene reservoirs encountered in the well South Baghjan-1.

The Loc. is released by the competent authority and currently being drilled as

well South Baghjan-2.

Exploration Geological Note-968 (Review of Eocene Structures in

Parbatipur, Jagungaon and Mahakali Areas from M/s Beicip Franlab

consultancy study):

Subsequent to the Eocene hydrocarbon prospects in the areas of Parbatipur,

Jagungaon, Mahakali and Zaloni identified by consultant M/s BEICIP Frenlab,

an in-house review was made of the Eocene prospects of the areas and based on

the review, three (3) locations were proposed to delineate the Paleocene-Lower

Eocene reservoirs. Five (5) locations are released from the competent authority

from the study.

Exploration Geological Note-969 (Review of Barail Prospects in

parbatipur, Balimara, Rupai, tara and Borguri Areas from M/s Beicip

Franlab consultancy study):

Subsequent to the identification of Barail hydrocarbon prospects in the areas of

Parbatipur, Jagungaon, Mahakali and Zaloni by consultant M/s BEICIP

Frenlab, an in-house review was made of the Barail prospects of the areas and

based on the review, three (3) locations were proposed.

Exploration Geological Note-971 (Review of Barail and Eocene Prospects

in and around Sarojini, Rajgarh and Dipling Areas from M/s Beicip

Franlab consultancy study):

Subsequent to the identification of Barail and Eocene hydrocarbon prospects in

and around the areas of Sarojini, Rajgarh and Dipling by consultant M/s

BEICIP Frenlab, an in-house review was made of the prospects of the areas and

based on the review, two (2) locations were proposed. Both the locations are

released by the competent authority.

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Exploration Geological Note-983 (Review of Sonari-Safrai Areas for

Prospect Generation):

Based on critical review of the existing seismic data and newly acquired high

sampling 2D data, a geoscientific study was made integrating recent and earlier

seismic data of the Sonari and Safrai Area. Based on the study, two (2) locations

are proposed in the Safrai Area. Two (2) locations are released from the study by

the competent authority.

Exploration Geological Note-986 (Review of NELP-IX Block AA-ONN-

2010/3 ,Sadiya Area):

Based on recently acquired 3D seismic data during 2013-15 within the phase-I

of the NELP block of the Sadiya area, a geoscientific study was carried out of

the area for proposal of exploratory drilling and one (1) location was proposed.

The location is under review by the competent authority.

Exploration Geological Note-987 (Review of Hukanguri Structure):

Based on the review of the Hukanguri structure which was identified based on

drilling results of well Hukanguri-1, the area was reviewed and proposal for two

(2) locations (One each replacement and appraisal) was given to the competent

authority. One (1) loc. was released from the study.

Exploration Geological Note-936 (Review of adjoining areas of Kharsang):

Based on the 3D seismic data acquired and processed by M/S GeoEnpro for the

review of the JVC block of Kharsang where OIL is a non-operator, a geoscientific

study was carried in the adjoining areas of Kharsang which falls inside Ningru

PML boundary of OIL. From the study, three (3) locations are proposed for

exploratory drilling. Outh of the three (3), two (2) locations are released by the

competent authority.

Development Geological Note-1364 (Review of Balimara Area):

An integral geoscientific study was carried out along with Development Section

of G&R Deptt and Western Asset for the review of Balimara area based on

success of three (3) wells drilled in th area and based on the study, a total of

nine (9) locations [five (5) development and four (4) appraisal/extension] are

proposed. The locations are presently under review by competent authority.

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NO. OF LOCATIONS PROPOSED AND RELEASED FROM THE GEOSCIENTIFIC

STUDIES are listed in Table 1:

Sl Note No Area Pro

pos

ed

Released Remarks

1 EGN-

958

Review of South Baghjan 1 1 in cat-A

2 EGN-

968

Beicip Review-Eocene 3 4 in Cat-A

and 1 in

Cat-B

Released 3 exploratory

locations in Category-A and 1

in Cat-B. one (1) additional

location as development

location released

3 EGN-969

Beicip Review-Barail 3 Balimara area was reviewed as per suggestion and

integrated study was carried

out via DGN-1364

4 EGN-

971

Beicip Review-BCS, BMS

Eocene

2 1 in Cat-A

and 1 in Cat-B

5 EGN-

983

Geo-Scientific Study of

Safrai Area

2 1 in Cat-A

and 1 in

Cat-B

Released 1 exploratory

location at shifted position in

Category-A and 1 in Cat-B as

appraisal location.

6 EGN-

987

Review of Hukanguri and

proposal for replacement

location

2 1 in cat-A

7 EGN-

986

Geo-scientific study of

NELP-IX Sadiya block

1 Review of the study in E&D

Directorate is in progress

8 EGN-

936

Geoscientific study of

Kharsang

3 2 in cat-A

9 DGN-

1364

Review of Balimara for

proposal of Extension/Development

locations

9 Identified 5 development and

4 appraisal locations. Review of the study in E&D

Directorate is in progress

Total 26 10 in cat-A

and 3 in cat-

B

Table 1: No. of Locations proposed and released from Geoscientific Studies carried out in TEAM Centre

P a g e | 13


9.0 ADDITIONAL STUDIES

o Exploration Geological Note-963 (Proposed Open Acreage of OIL in

Assam & Arunachal):

A regional study was carried out where prospective open acreages were

identified in Assam and Arunachal Pradesh for nomination under Open Acreage

License Policy and "Hydrocarbon Vision 2030 for North East India" where OIL

does not have any E&P activities. Broad areas identified are: pasighat, Thrust

Belt Area, West of Mechaki, Namsai and Majuli.

o Exploration Geological Note-964 (Review of OIL’s Contract Areas under

Discovered Small Field Bid Round-2016):

A study was carried out for individual blocks of OIL which are under contract

areas of Discovered Small Fields Bid Round 2016; Govt of India. Areas are,

Dipling cluster (Dipling, Sapekhati, Sarojin)i, Duarmara, Jeraipathar and

Kherem. In the study hydrocarbon resource potential and production

forecasting of the blocks are analysed based on oil/gas bearing sand ranges in

the already drilled wells of the area. The study has offered insight of the

prospectivity of individual contract areas in terms of total recoverable

hydrocarbon present.

o Exploration Geological Note-977 (Technical Evaluation of five contract

areas offered under Discovered Small Field Bid Round-2016)

Detailed techno-economic evaluation based on information and data dockets

made available from DGH was carried out in this study for Mumbai Offshore

Blocks (D-18, D-31 cluster, B-37 cluster, B-9 cluster, B-80) and Assam Arakan

Blocks (Laxmijan-Bihubar and Borsilla).

o Exploration Geological Note-975 (Review of Nigeria Block OML-142)

A joint geoscientific study was carried out of Block OML-142 along with IOCL

representatives where both OIL and IOCL have 17.5% PI each (of 70% Suntera

Resourse Limited). The operator of the block is M/s Summit Oil International

Limited (30% PI). In the study, one appraisal well location, three drillable

prospects and one lead have been identified based available seismic and well

data. The well data mainly comproses of discovery well Otien-1 and appraisal

well Otien-2.

P a g e | 14


10.0 ACHIEVEMENTS FROM EXPLORATORY AND OTHER APPRAISAL

DRILLING:

During the FY 2016-17 a total of twelve (12) nos. of

exploratory/appraisal/extension wells were drilled which were initially proposed

from TEAM Centre through different Geoscientific studies. Viz. NHK-633,

Makalbari-1, Dulipara-1, Hapjan-67, NHK-639, Umatara-2, Lakwagaon-1,

Borbhubil-1, Balimara-3, Kharjan-1, Barekuri-20 and Mechaki-5. Out of these

wells Hapjan-67, Borbhuibil-1 and Kharjan-1 wells are discovery wells and

Balimara-3, Barekuri-20, Mechaki-5 and NHK-639 are the wells which

produced hydrocarbon. Lakwagaon-1 and Umatara-1 wells showed evidences of

hydrocarbon from drill cuttings and log interpretation, however production

testing was not completed at the end of FY 2016-17. Wells South Baghjan-2 and

South Chandmari-5 were currently in drilling till the end of FY 2016-17.

1.1 Discovery Wells:

o Kharjan-1: tested 4047-m Lakadong + Therria sand on 12.11.16. Observed

immediate pressure build-up of 300 psi. On opening the well it displaced 30

bbls of heavy oil. Sample analysis showed oil: 100%

( API: 23.1°, PP: 39°C). Well is presently kept shut in.

o Hapjan-67: tested 2775-m Barail sand on 29.12.16. After displacing 38 bbls

of well-fluids, the well produced mainly gas. The well kept Shut-in with SITP:

2600 psi. Further detail testing will be carried after laying of flow line

o Borbhuibil-1: tested 3322-m Barail sand on 05.03.17. The well produced oil

@ 28 klpd through FB to the well-head set-up by applying N2 shots. (API:

20.3°; PP<9°C).

1. 2 Other Successful Wells:

Balimara-3: tested 4083-m Barail 4th Sand. The well produced @ 24 klpd

through 7 mm bean with FTHP: 400 psi. Sample analysis showed Oil: 97.2

% (API: 33.8°, PP: 33°C); Water: 2.8 %.

Barekuri-20: tested 4274-m Lk+Th Sand. The well produced @ 84 klpd oil

through 4.5 mm bean with FTHP: 2200 psi. Sample analysis showed Oil:

99.2 % (API: 27.5°, PP: 33°C).

Mechaki-5: tested 5575-m Langpar Sand. The well produced @ 70 klpd oil

through 5 mm bean with FTHP: 1500 psi. Sample analysis showed Oil: 99 %

(API: 19.2°, PP: 42°C).

P a g e | 15


NHK-639: tested 2830-m Upper Tipam Sand. The well produced gas with

FTHP: 500 psi. Further detail testing will be carried out after laying of flow

line.

11.0 MISCELLANEOUS TEAM CENTRE JOBS:

Apart from above, TEAM Centre also performs several miscellaneous activities

which are listed below:

Liaising with Geophysics Department while preparing grids for seismic

acquisition of a particular area.

QC check of the processed seismic output data of HPCC, Geophysics Deptt

Provide support to HPCC for carrying out special studies viz. Seismic

Inversion Study, AVO study etc.

Provide necessary support to Central G&R and the three (3) designated

assets of MPA as and when required

P a g e | 16


12.0 MAJOR CONTRACTS UNDER EXECUTION Sl.

No.

Description of Service Name of Contractor

1 Hiring of WCL for NEFP Office Gogoi Enterprise

2 Hiring of Plot for Pipe yard At Shimui Ethel Lalsangliani Sailo

3 Hiring Services Of Cranes Purnajyoti Phukan

4 Hiring of 1 No. Dual-Cab Pickup Jaspal Singh

5 Hiring of Mud Logging Services Geologging Industries Limited,

6 Service Items Of Mud Engg. KMC Oiltools India Pvt. Ltd.

7 Coring Services In Mizoram RTE Burova Technika Llc

8 Service For Topographical Survey Deomali Pioneer Geomatics Engineering (P) L

9 Hiring of Services of Backhoe Loader Mr. Zorammuana

10 Hiring JCB On Call-Out Basis Mr. Vanlalenga

11 Environmental Parameter Monitoring Services Green Tech - Environmental Engineer

12 Charter Hire Of 1 (One) No. Drilling Rig Jaybee Energy Pvt. Ltd.

13 Cementing Services for Mizoram NELP Block National Oilwell Maintenance Company

14 Hiring Of Service For Office At Aizawl Purnajyoti Phukan

15 Core Analysis Core Laboratories International B.V

16 Vertical Drilling Services for Mizoram Schlumberger Asia Services Limited

17 Hiring Services Of One Dual Cab Pick-Up Jaspal Singh

18 Hiring Of 2 Nos. P/Vehicles for Mizoram Deepak Enterprise

19 Production Testing Services for Mizoram Techno Canada Inc.

20 Pre-Drilling Eiastudy in Jairampur Extn SGS India Private Ltd

21 Biostatigraphical Study of Drill Cutting Birbal Sahni Institute Of Palaeobot

22 2D Seismic Data Acquisition in Deomali, Asian Oilfield Services Ltd.

23 2D Seismic Data Processing Geofizyka Torun S.A.

24 Miscellaneous Civil Rate Contracts, Restoration Works at

Location MZ-3

Nayak Infrastructure Pvt. Ltd.

25 Miscellaneous Civil Rate Contracts Sunshine Overseas Pvt. Ltd.

26 Miscellaneous Civil Rate Contracts City Hardware

27 Miscellaneous Civil Rate Contracts Laldinthara Construction, Bawngkawn

28 Miscellaneous Civil Rate Contracts, Construction of

Separate Magazine House, Filling Effluent Pit,

Demolishing C.C. etc.

EL & TY Enterprise

29 Miscellaneous Civil Rate Contracts Laldinpuii

30 Hiring of Building for Office Miss Vanlalpari Ralte

31 P & I Of 600 Sqkm Of 3D Seisloop Data Geofizyka Krakow Sa

32 3D Seismic Data Acquisition Advent Oilfield Services Private Li

33 Biostratigraphical Studies Keshava Deva Malaviya Institute of

Petroleum Exploration

34 Cluster Analysis And Interpretation Weatherford Oil Tool Middle-East Lt

P a g e | 17


13.0 TRAINING PROGRAMS/ WORKSHOPS: During FY 2016-17 a no. of executives and employees of Exploration Basin

attended both technical and non-technical trainings, workshops, learning and developmental programs as presented below through In-House, In-Country and

Overseas mode.

Sl. No.

Name Program Venue, Convener & Period

1 A.N. Borthakur

New Horizon – A retirement planning

programme for Executives”

MTDC, All India Management

Association, New Delhi, 10th to

11th June 2016

Petrotech Delhi, 04th to 07th Dec. 2016

2 R. Phukan

52nd HR Summit of Oil & Gas PSUs IIM, Indore, HPCL, 28th to 29th

April 2016

Petrotech Delhi, 04th to 07th Dec. 2016

3 S. Basumatary H2S Awareness Workshop Mumbai, AEMTC, 13th June

2016

4 Khanin

Buragohain

Customised General Management

Training

IIM, Bangalore, 31st Oct 2016 to

04th November 2016

5 T. Borgohain SECONE’s International Gas

Conference

Agartala, 07th to 08th November

2016

6 D.K. Borah H2S Awareness Workshop Mumbai, AEMTC, 13th June

2016

7 P. Borgohain

H2S Awareness Workshop Mumbai, AEMTC, 13th June

2016

PetroPhysics for Professionals Delhi, AHLS Asia Ltd, 17th to 19th

October 2016

8 C. Laldinkima H2S Awareness Workshop Mumbai, AEMTC, 13th June 2016

9 A. Bordoloi

Geospatial World Forum Conference Hyderabad, WTC, 23rd to 25th January 2017

Workshop on PML transfer for DSF Bid Round 2017

Noida, DGH, 24th March 2017

H2S Awareness Workshop Mumbai, AEMTC, 25th April 2016

10 J.P. Ahmed PetroPhysics for Professionals Delhi, AHLS Asia Ltd, 17th to 19th

October 2016

11 Saqueeba Samin

Workshop at IRS- ONGC ONGC, Ahmadabad, 29th to 30th

March 2017

Interactive Workshop on

Aerogeophysical Surveys over OGP

area

Bengaluru, RSAS, 10th to 11th

June 2016

12 Saikat Das MicroSeismic Technolgy

Delhi, Sigma Cubed, 03rd October

2016

13 Prasunjay

Mohan Das

PetroPhysics for Professionals Delhi, AHLS Asia Ltd, 17th to 19th October 2016

First Time Leader MTDC, IIM Lucknow, 15th to 16th March 2017

Training on E&P Databank FHQ, Duliajan, 27th to 31st March 2017

Brainstorming Session of Young

Executives

Guwahati, 15th to 16th December

2016

P a g e | 18


14.0 COST SAVING MEASURES:

Exploration Basin aims towards Cost Savings by following laid down Company policies and procedures while carrying out operational and office jobs. Planning, monitoring and corrective measures wherein necessary are taken for better

utilization of resources and minimizing waste to add positive impact on the financial strength of the company.

14 Jayant Singh Brainstorming Session of Young

Executives

Guwahati, 15th to 16th December

2016

15 T. Ramprasad PetroPhysics for Professionals Delhi, AHLS Asia Ltd, 17th to 19th

October 2016

16 D.N. Saroj Customised General Management

Training

ASCI, Hyderabad, 12th to 23rd

September 2016

17 S.P. Singh NDR Applications and Web Portal to

E&P Operators

DGH, Noida, 11th to 14th April

2016

18

C.N. Banerjee

New Horizon – A retirement planning

programme for Executives” MTDC, All India Management Association, New Delhi, 10th to

11th June 2016

19 A. Choudhury GST Course Kolkata, TAX CONNECT, 21st to

23rd October 2016

20 Dip Jyoti Deka Basic Geomechanics in Techlog HPCC, Duliajan, 20th to 28th

March 2017

21 P. Sarmah

Basic Geomechanics in Techlog HPCC, Duliajan, 20th to 28th

March 2017

Basic Petroleum System Modeling in Petromod

KDMIPE, Dehradun, 06th to 10th

March 2017

22 D.N. Murthy Totality of Project Management Delhi, SCOPE, 18th to 20th May

2016

23 D.K. Baruah Geospatial World Forum Conference Hyderabad, WTC, 23rd to 25th

January 2017

24 A. Goswami Managing For Excellence - Be

Different, Do Different

Navi Mumbai, NIPM, 22nd to 23rd

April 2016

25 Pranab Jyoti Das

Finance for Non-Finance Executives Hyderabad, ASCI, 21st to 23rd November 2016

First Time Leader MTDC, IIM Lucknow, 15th to 16th March 2017

26 B.C. Deka

Practical Training Course on GST Gurgaon, Sector-14, 27th March to 04th April 2017

Project Management and IPMA Level D Certification'

MTDC, Project Management Association, 06th to 09th March

2017

27 N. J. Dutta (V) Employee Productivity Training MTDC, 14th to 15th March 2017

P a g e | 19


15.0 ENERGY CONSERVATION MEASURES

Exploration Basin remains committed and has exercised stringent energy conservation measures especially in the field of natural gas, power consumption for

various electrical gadgets and judicious utilization of sanctioned kilometreage of vehicles while taking care not to hamper office works in general and field works in

particular.

16.0 MANPOWER

The manpower position of Exploration Basin as on 31st March 2017 is as under: Category Strength

(in nos.)

Executives 36

Employees 9

WCL staff 3

17.0 OVERTIME

Due to work exigency, the overtime incurred during FY 2016-17 in Exploration

Basin inclusive of both Company employees and WCL staff accounted for 2954

hours. However, efforts are for judicious utilization of human resource and

minimise overtime hours without hampering Company’s performance.

18.0 CAPITAL AND REVENUE BUDGET EXPENDITURE

The Capital and Revenue Expenditure for FY 2016-17 are Rs. 2,37,680/- and

Rs.18,03,23,569/- respectively. The figures are derived prior to running of Cost

Cycle for Q4 in FY 2016-17.

19.0 KNOWLEDGE SHARING:

Like the quote states, Exploration Basin also

believes in sharing of knowledge gained with the

ones which can benefit the society. What could

be more apt utilization of knowledge than

sharing it with the fertile minds of students, the

torch bearers of academia. With this aim a

humble effort has been made as stated below:

P a g e | 20


Sl. No.

Name Programme Date Place

1. Dipjyoti Deka, Suptg.

Geologist

Speaker in Petrotech Industry-Academia Meet

12.05.2016 Digboi

2. Saqueba Samin &

Dipjyoti Deka, Suptg.

Geologists

Guest lecture in Dibrugarh University

26.05.2016 &

01.06.2016

Dibrugarh

3. Jayant Kr. Singh, Suptg.

Geologist & Prasunjoy

Mohan Das, Sr. Geologist

Guest lecture in Dibrugarh University

06.06.2016 Dibrugarh

4. Trailukya Borgohain,

Chief Geologist (Expl)

Guest lecture in Dibrugarh

University

06.06.2016 Dibrugarh

20.0 STATUS OF SHALE GAS/OIL EXPLORATION PROJECT OF OIL

I. Summary:

Under Shale Gas Policy, Govt. of India has awarded three blocks from

Upper Assam Basin, two in Arunachal Pradesh and one in Jaisalmer Basin of

Rajasthan for Shale Gas exploration to Oil India Limited. Accordingly, OIL has

identified target shales to be explored for shale gas/oil in above six blocks as

per table below:

Sl.

No. Basin

Target Shales

/Approx. Depth

(m)

PML/PEL Area

(Sq.km)

Phase-I Shale Gas

License validity

1.

Upper

Assam

Upper Tikak

Parbat

(1400)

Jairampur Extn.

PEL

23.25

09.04.2017

2. Kopili (2700) &

Lakadong (3440)

Chabua PML 189.00

3. Barail (3000) Dumduma PML 506.21

4. Kopili (3180) &

Lakadong (3730)

Dibrugarh PML 186.00

5. Jaisalmer,

Rajasthan

Baisakhi-Bedesir

(2100)

Jaisalmer PML 250.00

6. Upper Assam

Disang Shale (Supra & Sub

Thrust)/ 3000

Deomali PEL 113.5 08.10.2018

With respect to the Shale Gas/Oil Exploration, DGH has provided the

guidelines for Assessment Phase-I within a time frame of 3 years. During the

assessment period the Operator has to carry out the following activities:

EIA studies, G&G analysis, Drilling of Pilot/Testing wells, Coring, Hydro-

fracturing, Geo-chemical studies, Geo-mechanical/ Geo-Hazard/ Geo-technical

studies and Resource Assessment for Shale Gas and Oil.

P a g e | 21


II. Dibrugarh PML, Chabua PML, Dumduma & Jaisalmer PML Blocks:

A. G&G studies were carried out based on the available wireline logs, existing

seismic data, and previous study reports.

B. Geochemical analysis (Rock Eval pyrolysis & Vitrinite Reflectance) of drill-

cutting shale samples were carried out to understand the organic richness

and the maturity of target shales.

C. For each block, separate technical reports (one for Dibrugarh, one for

Chabua, two for Dumduma and one for Jaisalmer) were submitted to

corporate management for peer review. Based on the reports and findings,

one brainstorming session was held at Duliajan with Corporate

Management to formulate the strategic plan for Shale Gas/Oil exploration

to be carried out by OIL. In the brainstorming session, it was decided to find

out the suitable locations for Dibrugarh, Dumduma and Jaisalmer PMLs.

D. Accordingly, one compiled report for the above blocks were submitted to

Corporate Management with proposal of three core-hole locations (one in

Dibrugarh, one in Dumduma and one in Jaisalmer PML) for acquiring

conventional core in the identified target zone. In this regards, Corporate

Management has approved the following locations :

Loc. DIBK (Dibrugarh PML, Assam): The proposed core hole is an

existing lined up location which is located adjacent to the block

boundary. This dual prospect for both conventional Eocene primary

target and unconventional shale play within Kopili Formation will be

drilled in the month of April-May 2017.

Loc. DHS (Dumduma PML, Assam): The proposed core hole is an

existing lined up location for dual prospect for both conventional lower

Tipam primary target and unconventional shale play within Barail-Coal

shale sequence will be drilled in the month of April-May 2017.

Loc. RJBF (Jaisalmer PML, Rajasthan): The proposed core hole was

released for conventional coring in Baisakhi-Bedeshir. Extensive amount

of conventional core (about 45 m) has been acquired in Baisakhi-

Bedeshir Formation and presently, the core-evaluation by M/s

Weatherford is in progress. The final output with interpretation will be

submitted to corporate Management during August 2017.

Chabua PML (Assam): The Rock-Eval Pyrolysis and the VRo of drill-

cutting samples of this block shows poor prospectivity compared to other

blocks. Recent studies on Petroleum System Model Of The Upper Assam

Basin by IGI Ltd., Petroleum System Modeling of Upper Assam Basin by

M/s Schlumberger etc. also reflects that the block is of poor prospectivity

due to less organic richness and immature which entered only into early oil

generation window. In this connection, the minimum work program for this

P a g e | 22


block is not carried out; however it has been decided to wait for the

forthcoming results of the conventional cores to be acquired in Dibrugarh

PML.

E. Jairampur Extension PEL and Deomali PEL Blocks: Two technical

reports based on the limited G&G data and surface geological field survey

were submitted to Corporate Management with proposal of three core-hole

locations to be drilled freshly upto a depth of 2000 m for shale gas/Oil

exploration of Disang shales in Thrust Belt areas.

(B) Coal Bed Methane Exploration Activities:

The Assam CBM Block (AS-CBM-2008/IV) was awarded to the consortium

of OIL and M/s Dart Energy under the IVth (Fourth) round of CBM bidding.

OIL became the major partner of CBM exploration with 90% PI and M/s

Dart Energy with 10% PI holding operatorship of the block. Till end of this

FY, acquisition of 80 (eighty) GLKM of high resolution of seismic data,

drilling of 15 (fifteen) no. of core-holes and 02 (two) no. of test wells have

been completed as indicated in MWP commitment. Dewatering and IF test

in these test wells were also completed. Due to poor prospectively of the

Block the Consortium applied for relinquishment of the Block.

P a g e | 23


21.0 ACKNOWLEDGEMENT:

With a sincere heart, Exploration Basin extends gratitude and

acknowledges the guidance, support and assistance received

from Director (E&D), Resident Chief Executive, Executive

Director (Corporate Affairs), Executive Director (Basin

Manager) and also thankful to the executives and employees

of Exploration Basin for their zeal and commitment. We are

also grateful to all our officers and workpersons from all the

Spheres, Projects and Corporate Office for their cooperation,

motivation and help in the hours of need and expect the same

to be continued in future.

Date: 03.05.2017

Place: Duliajan

(A.N. Borthakur)

General Manager (Exploration)

Documents

Sl. No. Contents Page no. - Oil India€¦ · annual report 2016-17, exploration basin sl. no. contents page no. 1.0 preamble 01 2.0 present operational areas under exploration basin