扶余油田剩余油分布主控因素剖析  

Analysis on the Main Influential Factors of Remaining Oil Distribution in Fuyu Oilfield

作　　者：汤小燕[1] 王剑[2] 

机构地区：[1]西安科技大学地质与环境学院,西安710054 [2]西安石油大学地球科学与工程学院,西安710065

出　　处：《地质科技情报》2015年第3期101-106,共6页Geological Science and Technology Information

基　　金：陕西省自然科学基金研究计划项目(2013JQ5008);陕西省教育厅专项科研计划项目(2013JK0857)

摘　　要：扶余油田断裂系统发育,属于裂缝性中孔中渗构造砂岩油藏。由于长期的注水开发,综合含水率已高达90%以上,油藏内部油、水分布变得异常复杂,控制和影响剩余油分布的因素较多,严重制约着开发调整方案的有效制定。基于研究区密闭取心井的分析化验资料和实际生产动态资料,采用岩心、测井等静态分析与实际生产动态分析有机结合的手段,深入系统地剖析了研究区剩余油分布的主控因素。研究结果表明,随着该油田开发程度的加大,剩余油分布不仅受储集层地质因素的影响,同时也受后期开发井网部署的影响;该油田剩余油分布主要受储集层物性、储集层韵律性、沉积微相、井网部署等方面的影响,沉积微相的控制作用最强、储集层韵律性次之,而井网部署和物性影响相对较弱。本研究成果将有助于筛选剩余油分布的有利区域,为制定稳油控水的治理措施提供地质依据。Fuyu oilfield is a tectonic-lithologic reservoir~ it belongs to fractured tectonic-sandstone reservoir with medium porosity and medium permeability. Due to the long-term water flooding, at present the integral water con tent is more than 90 ~ and the oil-water distribution has become more complicated. There are many factors influen cing and controlling the remaining oil distribution, it seriously restrict to effectively formulate the development ad- justment scheme. In this paper, depending on the laboratory test data of pressure coring wells and actual production performance data.we used to static analysis of core,logging and dynamic analysis of practical production, further systematically analyzed the main control factors of remaining oil distribution in the study area. The study results show that with the increase of the degree of oilficld development, the remaining oil distribution is not only affected by reservoir geological factors, but also affected hy the late development well pattern deployment; the oilfield re- maining oil distribution is mainly affected by reservoir physical property, reservoir rhythm, sedimentary microfa- cies, the influence of well pattern deployment, etc, the control action of sedimentary microfacies, reservoir strongest rhythm followed, and well pattern and physical effect is relatively weak. This study will help to choose the favorable area of remaining oil distribution,to provide geological basis for making the management measures of stabilizing oil and controlling water.

关 键 词：扶余油田 剩余油分布 主控因素 物性 韵律 沉积微相 井网 

分 类 号：TE143[石油与天然气工程—油气勘探]