Oil & Gas Geology ›› 2011, Vol. 32 ›› Issue (4): 584-592.doi: 10.11743/ogg20110412
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Abstract: Faultblock groups are the most important ‘cradle’ for oil/gas traps in Dongpu Sag whose distinctive tectonic setting and local deformation offered favorable conditions for the formation of complex faultblock groups. Based on exploration and development data, we studied the characteristics, formation mechanism, reservoirforming condition, and exploration potential of the complex faultblock groups. Besides the general features of faultblock groups, the distinguishing characteristics of these groups in Dongpu Sag are of mirror image relationships both in vertical and horizontal directions. The complexity of the faultblock groups is related to varying dynamics, multiphase extension, complicated local deformation condition and different deformation rocks. Dongpu Sag contains good source rocks, reservoirs and cap rocks. The fault blocks here serve as elementary oil/gas accumulation units. Although an individual fault block may be small, the faultblock groups form favorable traps with the faults acting as major migration paths. The faultblock groups in Dongpu Sag have great exploration potentials, and can still be regarded as major exploration targets in the future.
Key words:  , Key words: formation mechanism, hydrocarbon reservoir, exploration potential, complex faultblock group, Dongpu Sag
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URL: http://ogg.pepris.com/EN/10.11743/ogg20110412
http://ogg.pepris.com/EN/Y2011/V32/I4/584