The Diagenetic Field Analysis And Application Of The Western Slop Of Yuanyanggou Sub-sag

On the basis of the research that Predecessors have a study of the diagenesis numerical simulation,we established a new kinetic model incorporating overpressure.Further improved the system of the diagenesis numerical simulation and Analysis of diagenesis field,and complished the analysis of diagenesis field and the forecast of diagenetic facies in the western slope of Yuanyanggou sub-sag.Analysing the relevance of the deposits micro,and the porosity, we established this area differently to deposit the micro reservoir porosity with to become the diagenesis index the related model,forecasted the reservoir porosity,and determinated effective reservoir distributed scope.Research shows that in most areas,The porosity of the upper reservoir of Es3 are upper than the industrial minimum porosity (8.5%). Because only a small area in the south-east tend to diagenesis,and reservoir properties lost.The Es1 and Es2's reservoir diagenesis are weaker,The reservoir porosity of the region are greater than 5.8%,and are effective reservoir.The distribution of favorable reservoir mainly chontroled by the distribution of sand.Through homogenization temperatures of fluid inclusions,simulation and paleo-geothermal history and petroleum inclusions particles index GOI statistics,we research the time and space distribution characteristics of hydrocarbon migration and the accumulation kinetics of the western slope of Yuanyanggou sub-sag.The results show that The Hydrocarbon migration time of the western slope of Yuanyanggou sub-sag is Ed2,Ed1 and Nm,Which the Ed2 and Ed1 are two main stages.Basin modeling study further shows that Shahejie group began to produce oil in the end of Es1 period,but begin to large-scale Oil and gas migration and accumulation in the period of Ed.The oil and gas which produced in the depression migrate along the slopes,accumulated the northwest slopes,which in oilfield location.