Abstract:
One of the producing fields of the Lower Indus basin Kadanwari field in
Kadanwari-Latif block. Major objectives of this research were to characterize reservoir
potential. We have given 3D seismic data cube along with three wells i.e. Kadanwari-01,
Kadanwari-03 and Kadanwari-10. The study area lies in extensional regime. Lower Goru
is proven reservoir in the area as it contains thin interbedded sandstones in shales that act
as reservoirs. This study utilizes the advanced seismic methods like seismic inversion
along with the support of seismic interpretation and petrophysical analysis of KadanwariLatif area, Pakistan. This has been achieved by sub surface mapping using seismic data
and its integration with well data. The methodology adopted to achieve this objective
includes structural interpretation of 3D seismic data, fault geometry mapping, time and
depth contouring of B-Sand. Total three horizons are marked i.e. Upper Goru Formation,
Sembar Formation and B-Sand. Extension and sliding causes normal faults that divide the
area into horst and graben and which also play an important role in compartmentalization
of a reservoir. Petrophysical analysis showed one reservoir zone of significant thickness
and hydrocarbon saturation in each Kadanwari well. Model based inversion method has
provided clear understanding regarding porosity and lithological content in B Sand
reservoir which is suitable approach for further development. This analysis gives the
porosity values which are much close to the porosity calculated from the petrophysical
analysis. Reservoir characterization techniques like seismic inversion and petrophysical
analysis have confirmed B Sand a proven reservoir of Kadanwari -Latif area.
