动静态方法在油藏井间连通性分析中的应用研究  

Application of Dynamic and Static Analyses in Inter-Well Connectivity Characterization

作　　者：廖明光[1] 廖成基 陈小凡[1] Liao Mingguang;Liao Chengji;Chen Xiaofan(Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]西南石油大学,四川成都610500

出　　处：《特种油气藏》2020年第3期131-136,共6页Special Oil & Gas Reservoirs

基　　金：国家重点基础研究发展(973计划)项目“中国陆相致密油(页岩油)形成机理与富集规律基础研究”(2014CB239005);国家自然科学基金“泥质岩层对低渗透砂岩储层油气成藏的控制机理研究”(41502146)

摘　　要：塔北牙哈7井区碳酸盐岩潜山油藏储层基质物性差,缝洞较发育,非均质性强,目前总体呈现出底水快速锥进、含水高、采出程度低等情况。针对该问题,运用水平井测井解释和地震平面属性相结合的静态方法分析储层横向非均质性变化,再利用动态资料判断井间连通性,佐证静态分析认识,得到油藏井间连通性的可靠认识。结果表明,测井模型显示井区储层横向非均质性较强,地震属性预测判断YH7-3H井与其他井的连通概率较小;示踪剂监测结果表明YH7-H2、YH7-H5井间表现出相对较好的连通性,并由压力恢复试井、井间干扰试井及注采见效法得到补充验证。该方法在牙哈7井区应用效果好,为该类复杂油藏井间连通性的准确评价及该区油藏开发部署提供了有效指导。The carbonate buried-hill reservoir in the Wellblock Yaha7 of Tabei Oilfield is characterized by poor matrix properties,well-developed fracture-cave and strong heterogeneity,which leads to the rapid bottom-water coning,high water-cut and low recovery factor.Horizontal well logging interpretation and lateral seismic attribute were combined to analyze the lateral reservoir heterogeneity based on static data.Production data was used to characterize the inter-well connectivity and verify the understanding of static analysis and gain a reliable understanding of inter-well reservoir connectivity.Research indicates that the logging model shows a strong lateral reservoir heterogeneity in this wellblock.The seismic attribute prediction demonstrates a small connection probability between the Well YH7-3H and other wells.The tracer monitoring reveals a relatively better connectivity between the Well YH7-H2 and Well YH7-H5,which were also validated by pressure buildup well test,inter-well interference test and injection-production performance.This method has been successfully applied in the Wellblock Yaha7,which could provide certain guidance for the characterization of inter-well reservoir connectivity and reservoir deployment.

关 键 词：井间连通性 缝洞储层 碳酸盐岩潜山油藏 非均质性 塔北油田 

分 类 号：TE344[石油与天然气工程—油气田开发工程]