7/27/2019 Lion PESGB Poster 1

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Petroleum Systems of Block 2B,

Southern Anza Basin, Offshore Kenya

The southern Anza Basin is the

easternmost extent of the

Cretaceous age Central African Rift

System (CARS). This rift system

extends west into Sudan, Chad,

Niger and Nigeria and accounts for

several billions of barrels of oil

discovered as predominantly part of

a Cretaceous petroleum system:

However in the southern Anza these source rocks appear more deeply buried than their counterparts in Sudan (only 3wells have actually penetrated the Lower Cretaceous in the Anza Graben), due to the structural overprint of the LamuEmbayment in the south and progressive deepening of the Cretaceous sediments.

This would appear to in part explain the increasing presence of gas shows in wells drilled in the Anza Basin as one movesfrom north to south (figure 1)

While this clearly increases the gas risk associated with this play, these source rocks have very good petroleum potentialand this petroleum system should not be dismissed. A critical factor to consider in evaluating Cretaceous targets will berelated to trap timing, reactivation and migration. Oil will certainly have been generated in the southern Anza fromCretaceous source rocks, however the preservation of accumulations during later extension will be key.

This rift system in Sudan formed theMuglad and Melut basins, which aloneaccount for the discovery of almost 7

billion barrels of reserves, sourcedmainly from Cretaceous lacustrineshales.

A geological, geochemical and geophysical overview of Kenya Block 2B and the importance of

the Cretaceous and Tertiary depositional environments and tectonic history.

Block 2B in Kenya has two possible analogues in the Sudanese Cretaceous Rifts and the Ugandan and Kenyan arms of

the Tertiary age East African Rift System, The similarities between these areas and the southern Anza basin will be

explored and the relevance of each explained. Key elements of petroleum systems analogous to each area are

thoroughly examined in the context of the southern Anza Basin palaeogeography and tectonics, and the continual

movement along the impressive and basin-defining Lagh-Bogal fault.By: Chris Lewis, VP-Exploration, Lion Petroleum

Drilling within the Anza Basin hasencountered similar Cretaceouslacustrine shales with very goodsource potential in some areas.

For example, the Sirius-1 wellencountered a rich LowerCretaceous source with TOC up to6%.

Comparison of Hydrocarbon oilsfrom Sudan and Anza

Sectionlocation

map

www.lionpetroleumcorp.com

Correlation Location Map

Block 2B

AnzaR

ift