Print this pageAAPG GEO 2010 Middle East
Geoscience Conference & Exhibition
Innovative Geoscience Solutions – Meeting Hydrocarbon Demand in Changing Times
March 7-10, 2010 – Manama, Bahrain
An Integrated Analysis for the Re-Assessment of Hydrocarbon Potential of a Low Prospect Area-a Case Study from Jurassic Marrat Reservoir of Burgan Structure in South East Kuwait
(1) Exploration Group, Kuwait Oil Company, Ahmadi, Kuwait.
(2) Exploration Group, Kuwait Oil Company, Ahmadi, Kuwait.
(3) Exploration Group, Kuwait Oil Company, Ahmadi, Kuwait.
(4) Exploration Group, Kuwait Oil Company, Ahmadi, Kuwait.
(5) Exploration Group, Kuwait Oil Company, Ahmadi, Kuwait.
Recent discovery of hydrocarbon from Jurassic section in different parts of Kuwait necessitated a re-look at Jurassic prospects of Burgan area in the light of better understanding of different elements of hydrocarbon system defining the Jurassic play fairway. An integrated study on interpretation of 3D seismic, fracture, sequence stratigraphy and analysis of reservoir engineering data have enhanced the prospectivity of Jurassic Marrat sediment over Burgan structure. The study brings out the structural features which are in sharp contrast to the earlier subsurface picture. Three sets of fault divide the main Burgan structure into seven different blocks. Earlier drilling activities are found to be confined to four blocks leaving other three blocks as totally untested and unexplored. Petrophysical analysis identified two sections in Middle Marrat as hydrocarbon bearing. The upper section was the better prospect and was tested in five out of six wells drilled earlier, but none of the well threw any light on oil water contact (OWC). The reservoir engineering data supplemented with petrophysics and structural synthesis marks three probable OWCs. A section in the lower part of Middle Marrat, approximately 250 ft below the deepest inferred OWC was tested in one well and found oil bearing. The well was found to be drilled 150 ft down the structure and as a result the potential of this section could not be ascertained properly from previous exploratory efforts. The presence of equally prospective equivalent sedimentary section in other drilled wells enhances the Middle Marrat prospect. Sequence Stratigraphic analysis identifies the hydrocarbon bearing zones as a part of Highstand Systems Tract that continues laterally towards north in the Magwa field. The present study has demonstrated the necessity of re-assessment of hydrocarbon prospect for partially explored areas by continuous revision incorporating the latest data sets, experiences, concepts and technological advancements.