Petroleum Resource Appraisal of Lovver Goru Play, Badin Block, Lovver Indus Basin, Pakistan

Abstract

Badin Block is a concession area granted to Union Texas Pakistan (UTP). The petroleum resource appraisal of the lower Goru play of Badin Block has been carried out through the “Discovery Process Model” of a software developed by John R Lacey International Ltd. in association with Prass Consultants of canada. The Early Cretaceous Lower Goru sandstones are the main oil and gas producing reservoir rocks of this block. These sandstones can be divided into five discrete sand bodies; however, the uppennost and the lowennost sands of the sequence are often considered the primary reservoirs. Exploration in the Lower Indus Basin started in 1939 and the first discovery of oil, in the Bad.inBlock, was made by UTP Group in May, 1981 at Khaskeli. Until December, 1992, UTP has discovered 31 oil and gas fields in Badin Block, and the recoverable reserves of these 31 oil and gas pools provide the basis for the estimation of recoverable reserves of oil and gas of the whole Badin Block.
The analysis shows that about 31% of the total recoverable oil reserves i.e. 35.5 rnm bbl still remain to be discovered out of the additional 105 expected pools in the play. Similarly, it has been estimated that about 47% of the total recoverable gas reserves i.e. 520.5 Bef still remain to be discovered out of the additional 124 expected pools.