Fine Description And Geological Modeling Of Oil Formation ? Of 3^rd Member In Shuang 437 Block Of Shuanghe Oil Field

Shuanghe Oilfield has entered the middle and late stage of exploitation at present.It is urgent to conduct more in-depth research on the reservoir on the basis of the original geology,so as to control the distribution law of remaining oil,improve the development efficiency and improve the development effect.In this study,the ? oil formation of shuang437 block with thick sand body and large oil content in Shuanghe oilfield is taken as the research object.Based on core drilling data,well location data,logging data and other static geological data as well as development dynamic data,Guided by the theory of oil geology,sedimentology,reservoir geology,interwell interpolation and stochastic simulation,Based on the original geology of the oil field,the thick sandbody reservoir of fan-delta front of oil group ? in Shuang437 block is described in detail,and 3D geological modeling is carried out.The results show that the target interval is divided into three single layers and fifteen sub layers,and the sand body development of each single layer is quite different,which is generally controlled by the southeast and South provenance areas.There are three normal faults in the study area.The micro structure map with a distance of 5m can identify the micro structures that are conducive to oil and gas accumulation,such as small high point,small nose structure and small fault nose.The sedimentary environment is mainly fan delta front,with underwater channel sand body,river side sand body,sheet sand body,overflow bank sand body and other microfacies.The scale of channel and depth of lake basin water body in each period are greatly affected by provenance.The sedimentary environment is mainly fan delta front,with underwater channel sand body,river side sand body,sheet sand body,overflow bank sand body and other microfacies.The scale of channel and depth of lake basin water body in each period are greatly affected by provenance.In the three-dimensional geological modeling,the fault model is built.Through the continuous adjustment of pillar,the fault model in the dip,dip,strike are in line with the latest understanding of the oilfield.Because the previous geological research has carried out a detailed division of sedimentary facies,so the valuation method is used to establish the sedimentary facies model.Through deterministic modeling and stochastic modeling,the porosity and permeability models are modeled respectively.Through comparison,it can be found that the model established by Kriging algorithm is not as clear as the model established by sequential Gauss algorithm,and the model established by interpolation between wells under facies controlled conditions is consistent with the geological understanding of the oilfield,And it can lay a geological foundation for the following numerical simulation.