Set Phase And Porosity Prediction In Shuangqing Area In Western Liaohe Depression Reservoir

In this thesis, the regional geological conditions of the Liaohe western depression inShuangqing area and the regional sedimentary facies and diagenesis are systematically studiedand analyzed.Different types of oil and gas basins in the possession of various types are in agood phase in the zone，Generally a "phased" the characteristics of the oil and gasaccumulation from the control of the "reservoir of" mainly includes the same sedimentaryfacies and diagenetic.Based on the measured porosity information, cast sheet, scanningelectron microscopy and logging information on the research, analysis of the favorablereservoir on the vertical distribution, and further explore the formation of sedimentary faciesand diagenetic phase, Through the sedimentary facies and diagenesis research, considering thecomprehensive influence of sedimentary microfacies and diagenesis on reservoir porosity,established in Shuangqing area of reservoir porosity prediction model, predicting thedistribution of disease in Western Liaohe depression Shuangqing area of favorable reservoir,the reservoir porosity prediction.The results show that two-area reservoir is conducive to favorable development of thedeposition phase of fan delta distributary river mouth bar and front seats with sand,sublacustrine fan of braided channels and front-from fans; favorable A reservoir of the bestsolution is diagenesis of diagenetic phase, followed by the dissolution and some furthercemented diagenetic phase. Favorable deposition phase of diagenesis and beneficial to thecommon development of the region which is conducive to the development of the reservoirarea. Two-area Shahe Street group from top to bottom of the favorable development of thereservoir area gradually decreased. Horizontal, with a bit reservoir porosity from NW to SEon the whole was gradually decreasing trend, vertical, with the burial depth of the increase inlevels of the reservoir porosity value decreased, and high porosity reservoir NW-range togradually decrease, while low porosity reservoir to the SE direction gradually expanding.