Research On The Sedimentary Characteristics Of Wangfu Area Denglouku Formation

Applying the new methods of sedimentology, petroleum geology, seismic stratigraphy,sequence stratigraphy, etc, using a lot of logging, core logging and seismic data, and manyother data, carrying out the layer division and correlation, establishing sequence stratigraphicframework, the Wangfu fault depression Denglouku formation divided into three threesequences, six four sequence.Through the core phase, log phase, seismic phase, single-well phase, cross-sectionalphase, formation thickness, sandstone thickness analysis, studied the Wangfu fault depressionDenglouku formation source direction, sedimentary system types, sedimentary characteristicsand depositional system distribution characteristics and evolution. The results show that,during the sedimentary period of Wangfu fault depression Denglouku formation sourcedirection mainly from the northeast-southwest in the study area. Denglouku formation aredeveloped three kinds of subphases, there are shallow lake, braided river delta front andbraided river delta plain, braided river delta plain is further divided into braided channe ls andover-bank deposits, braided river delta front is further divided into the underwater distributarychannel, underwater distributary interchannel, mouth bar microfacies, Denglouku formationshows into the plot of the sedimentary sequence from the bottom to the top, revealingDenglouku group sedimentary facies have the distribution and evolution, analysis resultsDenglouku sedimentary tectonic, the ancient topography, climate and sediment supply fourfactors effect.Clarify Wangfu fault depression Denglouku formation the correlation of sedimentaryfacies and hydrocarbon, the study of the internal structure of the reservoir sand andmacroscopic heterogeneity has a very important significance, provide theoretical guidance forthe next development and deployment work.