羊三木油田储集层非均质性特征研究  

Research on reservoir heterogeneity in Yangsanmu Oilfield

作　　者：赵珺 刘海富[2] 王芮[2] 李玲玲 胡小龙 侯万滨 ZHAO Jun;LIU Haifu;WANG Rui;LI Lingling;HU Xiaolong;HOU Wanbin(No.6 Production Plant, Dagang Oilfield Company, CNPC, Tianjin 300280, China;Exploration and Development Institute, Dagang Oilfield Company, CNPC, Tianjin 300280, China;No.1 Mud Logging Company, BHDC, CNPC, Tianjin 300280, China;Inspection, Supervision and Evaluation Center(HSE Supervision and Evaluation Station), Dagang Oilfield Company, CNPC, Tianjin 300280, China)

机构地区：[1]中国石油大港油田公司第六采油厂,天津市300280 [2]中国石油大港油田公司勘探开发研究院 [3]中国石油渤海钻探工程有限公司第一录井公司 [4]中国石油大港油田公司检测监督评价中心(HSE监督评价总站)

出　　处：《录井工程》2020年第2期142-147,共6页Mud Logging Engineering

摘　　要：为深入了解羊三木油田储集层非均质性特征,在相带和单砂体展布研究的基础上,利用取心井的岩心分析资料,结合测井多井解释评价求取的储集层参数,对羊三木油田馆Ⅱ上油层组储集层层内、层间及平面非均质性进行了研究。结果表明,羊三木油田馆Ⅱ上油层组为辫状河沉积,由于成因不同,不同微相非均质性差别较大,心滩沉积非均质性最强,分支河道沉积均质程度最高;储集层岩石颗粒的大小和颗粒分选性是影响储集层性质的重要参数,储集层渗透率与颗粒大小呈正相关,与颗粒分选性呈负相关。储集层的非均质性控制因素主要有储集层结构模态、成岩作用和黏土矿物,其中储集层结构模态中单模态储集层结构孔渗性最好,双模态次之,三模态充填式储集层孔隙性最差;成岩作用对储集层的影响实际上是次生孔隙形成和再分配的过程,导致该区储集层发育多种孔隙类型,孔隙成因组成结构复杂化;黏土矿物对储集层物性的影响主要表现为分散状分布的黏土矿物对储集层影响不大,而薄层状、搭桥式、填塞式分布的黏土矿物大幅降低了储集层的渗透性。To further understand the reservoir heterogeneity in Yangsanmu Oilfield,based on the study of facies belt and single sand body distribution,the core analysis data of cored well was used and reservoir parameters obtained by well logging and multi-well interpretation and evaluation were combined to study the heterogeneity inside,between and on the surface of reservoir in the upper reservoir group of the second member of Guantao Formation in Yangsanmu Oilfield.According to the results,the upper reservoir group of the second member of Guantao Formation in Yangsanmu Oilfield is braided river sedimentation.Due to different genesis,the heterogeneity of different microphases differs greatly.The heterogeneity of channel bar sedimentation is the strongest,and the homogeneity of branch channel sedimentation is the highest.Reservoir rock particle size and particle sorting are important parameters influencing reservoir property.Reservoir permeability is positively correlated with particle size and is inversely correlated with particle sorting.The main controlling factors of reservoir heterogeneity are reservoir structural mode,diagenesis and clay minerals.The single-mode reservoir structure has the best porosity and permeability,followed by the bimodal reservoir,and the three-mode filling reservoir has the worst porosity and permeability.The impact of diagenesis on the reservoir is actually the process of secondary pore formation and redistribution,which leads to the development of diverse pore types in the reservoir in this area and the complex compositional structure of pore genesis.The impact of clay minerals on reservoir physical properties is mainly manifested as the scattered clay minerals barely influence the reservoir,while the thin layered,bridged and filling clay minerals greatly reduce the reservoir permeability.

关 键 词：非均质性 心滩 分支河道 结构模态 成岩作用 黏土矿物 羊三木油田 

分 类 号：TE132.1[石油与天然气工程—油气勘探]