秦皇岛32-6油田R1-3油田复合砂体构型解剖研究  

Anatomy of the composite sand body architecture in R1-3 oilfield of Qinhuangdao 32-6 oilfield

作　　者：何明薇 王海峰 范廷恩 HE Mingwei;WANG Haifeng;FAN Tingen(CNOOC Research Institute Co.,Ltd.,Beijing 100028,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028

出　　处：《石油化工应用》2022年第8期92-96,共5页Petrochemical Industry Application

摘　　要：秦皇岛32-6油田R1-3单元W为渤海明下段曲流河相沉积,目前开发已进入高含水期。该类储层在沉积过程中,不同期次的砂体在空间组合、叠置形成复合砂体,内部结构复杂,非均质性强,导致油田开发中后期面临一系列注采受效不均以及剩余油富集等问题。针对R1-3存在的实际生产问题,开展复合砂体构型解剖,预测储层内部连通性,对该单元的调整挖潜具有重要意义。在复合砂体构型理论与曲流河沉积模式的指导下,以地震为导向、井震联合,在等时格架内开展R1-3单元从单井-剖面-平面的复合砂体解剖,并建立相应的方法和流程。解剖结果应用于储层连通性分析、剩余油分布预测以及低产井分析等方面,弄清了注水井G27H和采油井A5、A30注采受效不均的原因。Unit R1-3 of Qinhuangdao 32-6 oilfield is a sand body of the meandering river phase in the lower section of the Bohai,and is currently developing into a high water content period.In the sedimentation process of such reservoirs,the sand bodies of different stages are combined and stacked in space to form composite sand bodies,with complex internal structure and strong heterogeneity,resulting in a series of problems such as uneven injection and recovery efficiency and residual oil enrichment in the middle and late stages of oilfield development.Aiming at the actual production problems of R1-3,the composite sand body configuration anatomy was carried out to predict the internal connectivity of the reservoir,which was of great significance for the adjustment potential of the unit.Under the guidance of composite sand structure theory and the sedimentary mode of meandering river,the composite sand dissection of R1-3 units from single well-section to plane is carried out in the isochrone grid,and the corresponding methods and processes are established.The anatomical results were applied to the reservoir connectivity analysis,residual oil distribution prediction and low production well analysis,and the reasons for the uneven efficiency injection and production in injection well G27H and production wells A5 and A30 were clarified.

关 键 词：海上油田 开发中后期 复合砂体 构型解剖 

分 类 号：TE122.24[石油与天然气工程—油气勘探]