| Biyang Depression has entered the mature high exploration period, easily found in possession of dwindling oil and gas, oil and gas remaining to be found in possession of concealed sharp increase. The relative depression, three of its nuclear low level of exploration. Biyang Depression of the third paragraph of an area of about 1000 km~2, in the three areas on the slopes of most of the erosion of the region, the three are still under paragraph better preserved, in the southern sag under paragraph 3 of the large number of deep lake, deep lake source Rock (total thickness of 700 m), high abundance of organic matter, the mother of type, and a long period of oil supply, oil sources in sufficient condition. Third evaluation of computing resources of oil and gas resources in Biyang Depression of the 3.38×10~8t, of which the resources of the third paragraph of 1.4×10~8t, the show is still the third paragraph of the larger exploration potential.The main topics for the source of three conditions under study, under the three deposition and reservoir characteristics of the study, transporting oil and gas transport system of research, oil and gas accumulation and aggregation model of research, exploration target trap description and evaluation studies . Main completed the following: (1) layer on the basis of comprehensive calibration, to three under for the main purpose of the completed a depression over 1,000 square km of 3D seismic data Fine explained that the preparation of the relevant reflection of the tectonic maps ( 2) Biyang Depression Li Yuan-shelf region and the region, completed the shops in 240 km~2 3-D seismic data inversion of the wells Chun-attribute analysis and found that the implementation of a number of structural and lithologic traps, (3) of Depression A number of local structures within the development characteristics of the study, the preparation of the corresponding structures of history, (4) completed the border Biyang depression fracture of the Fine explained that the analysis of the Biyang fracture of the border and sedimentation control structure, The establishment of a ditch fan corresponding deposition model (5) reservoir and the deposition phase and the main oil-bearing layer of sedimentary facies have been studied, prepared under the three groups of various types deposition phase and sand sedimentary facies of the profiles , The floor plan (6) the preparation of the third paragraph of the nuclear effective source rocks thickness contour map, the third paragraph of a mechanism abundance contour map.Subject the main results achieved are: (1) through the deposition of the third phase of the deposition and micro-phase study, major depression by deposition of three models, namely fan delta deposition model, braided river delta sedimentation patterns and meandering river triangle Chau deposition model, as in the south to find small glutenite reservoir provides a theoretical basis. (2) through the Depression and the formation of Comparative Anatomy and typical reservoir, found three of the existence of two nuclear deposition cycles, the three groups underⅥsand in the first cycle peak period, according to the most perfect system in Shuanghe trap on the dumping of oil and gas pinch Possession statistics, high abundance of reserves accounted for 55 percent, showed that three other regional nuclearⅥsand under a larger group of exploration potential. (3) summed up the three nuclear enrichment under the law of oil and gas, to the southern steep slope, Wang set the South - Sun Gang, and other areas conducive to the exploration zone, trap and through comprehensive evaluation of research and exploration potential, by a Approved drilling exploratory wells and found a number of oil blocks, which has achieved good results for exploration.
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