Levant Basin Geology and Hydrocarbon Potential Dr. Michael - - PowerPoint PPT Presentation

Levant Basin Geology and Hydrocarbon Potential

• Dr. Michael Gardosh

Head of Geology and Geophysics Department

Ministry of National Infrastructure, Energy and Water Resources

Main Topics:

• Main Characteristics of the Levant Basin
• Highlights of Basin Analysis
• Levant Basin Plays
• SEA

The Levant Basin – A World-Class Hydrocarbon Province in the SE Mediterranean Sea

Gas and Oil Fields Offshore Israel

• 200

Aphrodite/Ishai

Leviathan

Karish Tanin Dalit

Tamar

Tamar SW Shimshon Noa MariB

• Gas and oil fields throughout the

basin in both shallow and deep water

• Very high rate of success in drilling

the gas play (> 60%)

• Sub-commercial (at time of

discovery) but important oil fields

• Favorable geologic conditions for

generation and accumulation of gas and oil

Gaza Marine Dolphin

Oil Field Gas Field Pipelines

Legend:

Geologic Setting

200 km

Nile Delta Eratosthenes Seamount

Mediterranean

Sea

Sinai sub -plate

Levant Basin

Early Mesozoic Extension Cenozoic Compression

SE

Sea bottom Top Messinian Base Messinian Basement

(pre-Jurassic)

Middle Jurassic Middle Cretaceous Base Oligocene Middle Miocene Unc. Top chaotic unit Middle Miocene

NW

Section 1

1s TWT

Levant Structural and stratigraphic Framework

Messinian Plio-Pleistocene

Basin Analysis Study Offshore Israel

An integrated Basin Analysis Study was conducted by Beicip-FranLab in 2015 Project goals:



Define Petroleum Systems and Plays



Estimate the amount of hydrocarbon resources (Unrisked, Yet-To-Find, Recoverable)



Identify favorable areas for exploration



Provide a regional 2D and 3D integrated models

Regional Geologic Section used for 2D Modelling

TOC (%) TOC (%) TOC (%) TOC (%)

Difference between pessimistic and optimistic scenarios TOC value Possible correlation

Jurassic 1 Jurassic 2 Jurassic TOC Correlation Main Results:

 Good source rock for Biogenic Gas in the Oligocene, Miocene and Pliocene (TOC 0.5-1.5%)  Good source rock intervals for Oil and Gas in the Lower and Upper Jurassic and Middle Cretaceous

Basin Analysis- Source Rock Potential

Basin Analysis - Maturity Reconstruction

Main Results:

 The Oligo-Miocene is in the immature zone (Ro < 0.6%)  The Cretaceous is within the oil to light oil zone (0.6 -1.4 Ro)  The Upper Jurassic can reach the dry thermogenic gas zone

Basin Analysis- Pressure Regime

Overpressure (Mpa)

Main Results:

 The basin appears to be vertically and latterly compartmentalized  Salt and shale units form law permeability pressure barriers

Basin Analysis-Maturation and Expulsion of Hydrocarbons

Maturation map of Upper Jurassic (Kimmeridgian) source rock Present-day Time(Ma) Time (Ma) Time (Ma)

Transformation Ratio Mass of expelled Oil Mass of expelled Gas

A B C

Basin Analysis – Petroleum System Chart

Oil and gas charge Biogenic gas charge

 A cumulative analysis of the potential traps shows that 6.6 Billon Barrels

• f Oil and 2137 BCM of gas (In Place) may yet to be found in the basin

Basin Analysis - YTF Prospective Resources

OIL GAS

TOTAL OIL TOTAL GAS

Category of Prospective Oil and Gas Resources Jurassic Middle +Upper Lower Cetaceous Jurassic Middle +Upper Lower Cretaceous Oligo- Miocene (ABCD sands and equivalent) MIddle Upper Miocene Pliocene Billions bbl Billions bbl BCM BCM BCM BCM BCM Billions bbl BCM (2) YET-TO-FIND in Place Best Estimate 1.2 5.4 149 340 1089 238 321

6.6 2137

(75 TCF)

Basin Analysis – Petroleum Systems and Plays

Mediterranean Sea

? ?

?

? ?

?

? ? Oligo- Miocene Play L.Cretaceous Play Jurassic Play U.Miocene / Pliocene Play

Main Results:

 Four main Hydrocarbon plays, three of them proven (Pliocene, Oligo-Miocene, Jurassic) and one is speculative (Cretaceous).  Additional traps are likely found in all plays.

Oligo-Miocene Play (Tamar Sands)

Pliocene Play (Yafo Sands)

A

The Yafo Fan Complex

B Plio-Pleistocene Noa MariB Nir Miocene

OR-1 A B

Lower Cretaceous Play

Leviathan-1

Carbonate Buildup Play

Mira-1 Top Basement Depth

Oligo-Miocene

Zohr Jonah High

ENI (2014)

Strategic Environmental Assessment (SEA)

 In 2014 the Ministry launched an integrated study to estimate the environmental vulnerability in Mediterranean Sea offshore Israel.  The SEA was to designed to support the decision making process in allocating new exploration blocks.  The study was performed in collaboration with the Israeli Oceanographic Research Institute (IOLR) and included a comprehensive sampling program of the water and the sea-floor sediments in more then 50 locations, as well as analysis of large amount of scientific and industrial data.  More the 60 marine benthic habitats were identified and their environmental vulnerability to E&P activity was evaluated.  Throughout the SEA process the Ministry conducted consultations and sharing

• f knowledge and results with other ministries, NGO’s and the general public

Strategic Environmental Assessment-Results

 The SEA showed that most of the offshore area is of low vulnerability to E&P activity.  The more sensitive areas are located near the shallow-shelf and upper continental slope of the Mediterranean Sea.  As a result of this study the eastern part of the EEZ was excluded from the 1st offshore bid round.  The area of the present bid blocks is considered of low environmental vulnerability although the knowledge gap is still high.

First Offshore Bid Round - Blocks for bidding

 The Tender Documents can be found at www.energy-sea.gov.il

We Invite you to Participate in our Offshore Success

More information and updates: WWW.energy-sea.gov.il