Abstract:
The objective of this research was to quantify the Badin Shales, of Lower Goru,
as unconventional resource in the Badin area, through TOC and porosity estimation, and
to describe the structural settings of the study area using seismic interpretation of the data
set. The data provided by DGPC included, 2D seismic lines and log data of Jabo-01 well,
Nereri-01 well, RajEast-01 well, of the Badin block. Seismic interpretation confirms the
presence of normal faults, making horst and graben structure, and dipping in East and
West directions. Out of the three basic models of post-stack inversion, Model-based
inversion was applied for impedance prediction of Badin Shales, as model-based
inversion provides greater bandwidth and provides acoustic impedance variation over the
study area. Source rock evaluation was done, for estimation of TOC from well logs of
the provided wells, for identifying unconventional resource, using the Passey’s ∆logR
method. TOC estimation is the most important factor in identifying the reservoir potential
of unconventional shales. The TOC and porosity models indicate Total Porosity of >
8.5% and average TOC > 3% of the study area. Such characteristics indicate that Badin
Shale possesses the capacity to produce oil and gas.
