Exploration and Development of Siliciclastic and …...Exploration and Development of Siliciclastic...

Exploration and Development

of Siliciclastic and Carbonate

Reservoirs in the Eastern

Mediterranean26-27 February 2019 · Tel Aviv, Israel

Sedimentological review of depositional

environments in the External Hellenides

isopic zones, Ionian Sea and Western

Greece margin.

G. Makrodimitras & V. Kosmidou

Hellenic Hydrocarbon Resources Management S.A.

www.greekhydrocarbons.gr

Current status in Greece

AAPG GTW Exploration and development of Siliclastics and Carbonate Reservoirs in Eastern Mediterranean. 26-27 February 2019 | Tel Aviv – Israel.

• Prinos concession*• Katakolo*• Ioannina• Aitoloakarnania

• Patraikos Gulf (west)*

• Arta-Preveza*• NW Peloponnese*• Block 2• Block 10*• Ionian • West of Crete • SW of Crete• Block 1* • Sea of Thrace

• Patraikos Gulf (west) • Block 2

• Ioannina*• Aitoloakarnania*• Ionian*

• Block 2*• West of Crete* • SW of Crete*

• West of Crete • SW of Crete

* Operator waiting list

Open Acreage Studies

Current status in Greece

• Prinos concession*• Katakolo*• Ioannina• Aitoloakarnania

• Patraikos Gulf (west)*

• Arta-Preveza*• NW Peloponnese*• Block 2• Block 10*• Ionian • West of Crete • SW of Crete• Block 1* • Sea of Thrace

• Patraikos Gulf (west) • Block 2

• Ioannina*• Aitoloakarnania*• Ionian*

• Block 2*• West of Crete* • SW of Crete*

• West of Crete • SW of Crete

* Operator waiting list

Studied Area & Aim

Aim of the study

• To generate for each of the Segments in Western Greece the Facies Associations (FAs) and their Depositional Packages (DPs).

• Highlight any differences among Segments, especially between Segment A (North) and B (South), which were divided by KTF.

• Distinguish differentiations in basin-fill per Isopic Zone per Segment.

• Highlight FA’s which potentially may have better reservoir quality properties.

Segment A

Segment B

Geological setting and well data

Available data and limitations

Available data:

• 8 wells

• Legacy seismic lines & 2012 PGS lines to project well data.

• Limited LAS files.

• Log data (GR, Sonic, Drilling porosity, resistivity, calcimetry).

• Lithology column from cuttings.

• Biostratigraphic data.

• Very basic core descriptions.

Limitations:

• Lack of LAS files for most of the well data

• Lack of basic log data e.g. NPHI-RHOZ for most of the wells.

• The description of carbonate rocks did not follow the

Dunham’s (1962) classification scheme

• Lack of vital sedimentological information such as:

bioturbation index, sedimentary structures, types of skeletal

and non-skeletal allochems, types of cements, clay content

(kaolinite, illite or smectite), types of porosity (1P, 2P, OP, BX,

V, MO, μP, F) a.o.

Peristeri-1

Ugento-1

Merlo-1

Medusa-1

East Ericoussa-1

Filiatra-1

Agios Kirikos-1

South Kefallinia-1

Yanadhes-1

Paxos Gaios-1X

Parga-1

Sosti-1

Archangelos-3

Alykes-2

WellSea Bottom

(m)Total Depth

(m)Analyzed by

Merlo-1 797.0 2307.0 ongoing

Medusa-1 382.0 1440.0 ongoing

Ugento-1 onshore 4538.0 ongoing

East Ericoussa-1 85.6 2392.0 ✓

Yanadhes-1 162.5 3951.0 ✓

Paxos Gaios-1X onshore 5494.0 ✓

Parga-1 102.0 3653.0 ✓

Archangelos-3 onshore 2547.0 ongoing

South Kefallinia-1 120.0 2203.0 ✓

Agios Kirikos-1 onshore 1327.0 ✓

Alykes-2 onshore 1053.5 ongoing

Sosti-1 onshore 3949.0 ✓

Peristeri-1 onshore 1520.0 ✓

Filiatra-1 onshore 3757.0 ongoing

Peristeri-1

Thin-section descriptions

Descriptive framework and approach

www.greekhydrocarbons.grAAPG GTW Exploration and development of Siliclastics and Carbonate Reservoirs in Eastern Mediterranean. 26-27 February 2019 | Tel Aviv – Israel.

From Lithotypes/Lithofacies to Facies Associations

Evaluation of any available log data:

• GR

• Resistivity

• Neutron

• Density

• SP

• Calcimetry

• Porosity

• TOC

Example from Sosti-1 Pleistocene deposits

East Ericoussa-1

Pliocene-Pleistocene Oligocene-Miocene Jurassic-Lower Cretaceous TriassicUpper Cretaceous-Eocene

19.30%

UFS 3.67%

LSF.p 30.72

OTZ 25.45

CH6.29%

IS 85.78%

IS │ CGD?

B 75.35%

B | BS 24.65%

B 53.89%

L/TF? 46.11%

100.00%

Yanadhes-1

Pliocene Miocene* Oligocene** ***Cretaceous

32.39%

LFS.d61.61%

3.55%E

9.09% LFS.p7.51%

LFS.d74.50%

67.32%

32.68% B 100.00%

Paxi Gaios-1X

TriassicJurassicPaleocene-Eocene Cretaceous

15.25%

E/SB 72.51%

8.39% BS 5.95%

L36.21

42.00%

97.09%

100.00%

Parga-1

Pliocene-Pleistocene Early MioceneMiddle MioceneLate Miocene

FLv6.76%

41.52%

LFS.p6.29%

100.00%

3.34% IS

SL21.20

B 57.18%

CH2.84%

25.85%

LSf2.48%

IS68.83%

South Kefalinia-1

Cretaceous-EoceneUpper Miocene Lower Miocene

100.00%

LFS.d 30.50%OTZ

57.15%

TF | L 59.71

TF | SB?

LFS.d 2.45%

Agios Kirikos-1

Pliocene (Upper) Miocene

LFS.d 61.49

5.35%L

TF | L 59.71

PD96.61%

Sosti-1

Upper TriassicLower - Middle JurassicPliocene - Upper Miocene Lower - Middle Miocene Upper Cretaceous Lower Cretaceous - Upper Jurassic

23.12%

FL.ch26.81%

FL.ch | FL.v

FL.v44.30%

CH 17.34%

LS 63.01%

LS | IS

11.56%L

TF | L 59.71

TF | SB?

LFS.d 2.45%

Sl95.97%

100.00% BS

79.73%

B20.27%

TF | L 59.71

TF | SB?

LFS.d 2.45%

E 6.07%

87.62%

Peristeri-1

Upper TriassicPleistocene Pliocene-Pleistocene Oligocene

DS5.77%

75.38%

UFS10.15%

DS 32.76%

18.58%

FL.v 20.69%

SW 23.18%

L 25.86

TF | L 59.71

TF | SB?

DS100%

L 25.86

TF | L 59.71

TF | SB?

100.00%

Facies Associations in studied area 1/2

Facies Associations in studied area 2/2

Conclusions – Differentiations between Segments A & B

Cretaceous-Eocene

Pliocene-Pleistocene

Jurassic

Cretaceous-Eocene

Oligocene-Miocene

Pliocene-Pleistocene

Jurassic

Oligocene-Miocene

Major difference in depth might be due to rifting and paleogeography (development of new platforms in the area)

Due to different isopic domains (Ionian-deep Vs Pre Apulian-shallow)

Lateral continuation from Seg. A to Seg. B

Variations might be due to bigger coverage for the North Segment and well position (East Ionian).

However, shallower facies shows relatively shallowing of Ionian

domain to the North compared to the South during Oligocene-

Miocene

Both Segments exhibit shallow marine & coastal facies. However, KTZ activation juxtapose deeper facies of Segment B westwards, compared to A.

Conclusions

• Facies observed in Segments A and B will be present in western

areas of Ionian Sea.

• Variable reasons for differentiations in FAs base on well data:

i. Rifting and paleogeography

ii. Relatively shallowing

iii. KTZ juxtapose of FAs

iv. Different domains (isopic)

v. Coverage issue

• Carbonate deposits from studied wells confirmed the model:

i. Inner ramp Pre-Apulian Zone (L, L/TF, E, E/SB in PG-1X, SK-1)

ii. Middle to Outer ramp External and Middle Ionian Zone (Sl

and BS in S-1)

Lithofacies / Lithotypes

Depositional Packages

Facies Associations

Depositional System & Basin Fill

Thank you!

Exploration and Development of Siliciclastic and Carbonate Reservoirs in the Eastern Mediterranean26-27 February 2019Tel Aviv, Israel

2019, All rights reserved, Hellenic Hydrocarbon Resources Management S.A. (“HHRM S.A.”)Copyright NoticeThis brochure has been designed by HHRM S.A. and it is protected by any applicable copyright and other intellectual property laws. This document is the exclusive property of HHRM S.A.. No portion of this document may be reproduced or duplicated, in whole or in part, without the express written consent of HHRM S.A. and any review, use, distribution or disclosure of the information contained herein by unauthorized persons is strictly prohibited.

18, D .Margari Str. , 11525, Athens, Greece | T. (+30) 210 6717591www.greekhydrocarbons.gr

contact@greekhydrocarbons.gr

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