储层韵律精细描述对油田开发的影响——以渤海X油田G砂体为例

摘要

The lower Minghuazhen Formation in Bohai X Oilfield is a shallow water delta deposit,and G sandbody is the main oilbearing sandbody in the oil field.Analyzing the logging facies characteristics,G sandbody was formed by two stages of underwater distributary channel deposition.Based on the sedimentary microfacies superimposition pattern and wellbore rhyme information,a rhyme response template under sedimentary model control was established.Then,combined with the planar development characteristics and superimposition patterns of two stages of underwater distributary channel deposition,the plane rhythm distribution of G sandstone reservoir can be described from point to plane.Finally,by analyzing the production characteristics of horizontal wells in different longitudinal positions,the influence of reservoir rhythm on development wells is summarized,which provides technical support for the horizontal well deployment and remaining oil tapping.%渤海X油田明化镇组下段为浅水三角洲沉积,G砂体为油田主力含油砂体.通过分析测井相特征,G砂体纵向上识别出2期水下分流河道沉积,依据沉积微相叠置模式及实钻井韵律信息,建立了沉积模式控制下的韵律特征响应模板;然后结合2期沉积微相平面发育特征及纵向叠置模式,以井点为基础,由点至面分析了G砂体储层韵律平面展布特征;最终通过分析不同着陆位置水平井生产特征,总结了储层韵律对开发井的影响,为后续油田水平井部署及剩余油挖潜打下了坚实基础.