肃宁油田沙一段—东三段沉积特征与成藏模式  

Sedimentary characteristics and accumulation model of Es_(1) and Ed_(3) in Suning Oilfield

作　　者：柳灵艳 翟羽佳 Liu Lingyan;Zhai Yujia(Underground Gas Storage Management Agency of Huabei Oil field Company,Langfang 065000,China)

机构地区：[1]华北石油管理局有限公司储气库管理处,河北廊坊065000

出　　处：《能源与环保》2022年第4期102-108,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金项目(41272133);中国石油天然气股份有限公司重大专项(2017E-15)。

摘　　要：肃宁油田下第三系沙一上亚段和东三段是主要出油井段,经过30余年的勘探开发,不断有新井获得油气显示,但是目前井控程度较低,开采效果不理想。为研究开发效果影响因素,特别是沉积特征和成藏规律,以井震结合为手段,在等时地层格架内部研究沉积储层的分布规律,总结成藏模式。研究成果表明,肃宁油田东三段沉积相是浅水三角洲前缘沉积,沙一上亚段是湖泊—正常三角洲前缘沉积,油藏类型为构造—岩性油藏。肃宁油田的成藏模式是下生上储的构造—岩性油藏,不具备统一油水界面。油田油气成藏的优越条件为3个,分别为充足的油源条件、良好的疏导体系、优越的保存条件。在断层附近,特别是在反向正断层的下降盘,断层对于油气的运移起到了重要的作用,对于油气的保存起到了封闭效果。该成果对于研究区的开发起到了积极的借鉴意义。Suning Oilfield′s Lower Tertiary Sha-1 upper sub-member and Dong-3 member are the main oil-producing well sections.After more than 30 years of exploration and development,new wells have continuously obtained oil and gas displays.However,the current well control degree is low and the production effect is not satisfactory.In order to study the influencing factors of the development effect,especially the sedimentary characteristics and the law of accumulation,the combination of well-seismic as a method has been used to study the distribution law of sedimentary reservoirs within the isochronous stratigraphic framework and summarize the accumulation model.The research results showed that the sedimentary facies of the third member of the East Member of Suning Oilfield are shallow-water delta front deposits,the upper part of Shahejie Formation is a lacustrine-normal delta front deposit,and the reservoir type is a structural-lithological reservoir.The accumulation model of Suning Oilfield is a structural-lithological reservoir with lower generation and upper storage,and it does not have a unified oil-water interface.There are three superior conditions for oil and gas accumulation in an oil field,namely,sufficient oil source conditions,good drainage systems,and superior preservation conditions.Near the fault,especially in the descending wall of the reverse normal fault,the fault plays an important role in the migration of oil and gas and plays a sealing effect on the preservation of oil and gas.This result has played a positive reference to the development of the research area.

关 键 词：肃宁油田 东三段 沙一上亚段 沉积特征 成藏规律 成藏模式 

分 类 号：TE122.1[石油与天然气工程—油气勘探]