深层裂缝性储层物理类堵漏材料定量评价优选方法  

Quantitative evaluation and selection method of physical plugging materials in deep fractured reservoirs

作　　者：许成元[1] 张洪琳 康毅力[1] 游利军[1] 方俊伟[2] 张敬逸 闫霄鹏 谢智超 周贺翔 XU Chengyuan;ZHANG Honglin;KANG Yili;YOU Lijun;FANG Junwei;ZHANG Jingyi;YAN Xiaopeng;XIE Zhichao;ZHOU Hexiang(State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation//Southwest Petroleum University,Chengdu,Sichuan 610500,China;Petroleum Engineering Technology Research Institute,Sinopec Northwest Oilfield Company,Urumqi,Xinjiang 830011,China)

机构地区：[1]“油气藏地质及开发工程”国家重点实验室·西南石油大学 [2]中国石化西北油田分公司石油工程技术研究院

出　　处：《天然气工业》2021年第12期99-109,共11页Natural Gas Industry

基　　金：国家自然科学基金项目“基于逾渗和固液两相流理论的裂缝性储层工作液漏失损害预测与控制”(编号:51604236);四川省科技计划项目“保护储层并改善优势天然裂缝导流能力的钻井预撑裂缝堵漏基础研究”(编号:2018JY0436);非常规油气层保护四川省青年科技创新研究团队项目(编号:2021JDTD0017);中国石化重点科技项目“顺北一区5号断裂带提质提速钻完井技术研究”(编号:P20002)。

摘　　要：井漏不仅妨碍油气层的发现更影响钻井过程中的安全。塔里木盆地深层油气勘探开发面临深层裂缝性储层安全高效钻井和经济开发的重要工程技术难题,堵漏材料对钻井液漏失层条件和漏失类型的适用性决定其作用效果。为此,在考虑储层高温、高压、高地应力条件和生产前解堵需求的前提下,提取堵漏材料关键性能参数结果,设计并开展室内实验,对材料关键性能参数进行了系统评价,并基于层次分析法计算了堵漏材料关键性能参数权重,建立了堵漏材料定量评分模型,最终形成了深层裂缝性储层桥接堵漏材料定量评分优选方法。研究结果表明:①所提出的堵漏材料定量评价优选方法,可系统评价堵漏材料几何、力学和化学参数,实现对堵漏材料定量评分和快速优选;②采用优选材料所形成的配方封堵承压能力大于15 MPa,并在塔里木盆地深层裂缝性储层2口井堵漏现场试验验证了该方法的可靠性,有效提高了裂缝封堵效果;③所提出的堵漏材料定量评分优选方法主要适用于物理类桥接堵漏材料,其中堵漏材料关键性能参数类型、相对重要程度和权重,应进行动态调整。结论认为,该方法为深层裂缝性储层堵漏材料优选与堵漏配方设计提供了理论依据,具有广阔的推广应用前景。Lost circulation not only hinders the discovery of oil and gas reservoirs,but also impacts the safety in the process of drilling.The exploration and development of deep oil and gas reservoirs in the Tarim Basin faces an important engineering technological difficulty which restricts the safe and efficient drilling and economic development of deep fractured reservoirs.The applicability of plugging materials to the conditions of thief zones and the types of lost circulation determines its effect.Therefore,this paper extracts the key performance parameters of plugging materials while firstly considering the reservoir conditions of high temperature,high pressure and high stress and the need of plugging removal before the production.Then,laboratory experiments were designed and carried out to systematically evaluate the key performance parameters of plugging materials.In addition,the weights of the key performance parameters of plugging materials were calculated by means of analytic hierarchy process,and a quantitative scoring model of plugging materials was established.Thus,a quantitative scoring and selection method of bridging plugging materials for deep fractured reservoirs was eventually formed.And the following research results are obtained.First,the proposed quantitative evaluation and optimization method of plugging materials can systematically evaluate the geometric,mechanical and chemical parameters of plugging materials,and realize the quantitative scoring and quick selection of plugging materials.Second,the plugging pressure-bearing capacity of the formula composed of the selected materials is greater than 15 MPa.Its field test of plugging in 2 wells in the deep fractured reservoirs of the Tarim Basin verifies the reliability of this method,which can effectively improve the fracture plugging effect.Third,the proposed quantitative scoring and selection method of plugging materials is mainly applicable to physical bridging plugging materials,and the types,relative importance degrees and weights of the key per

关 键 词：塔里木盆地 深层裂缝性储层 井漏 堵漏材料 性能参数 定量评分 优选方法 

分 类 号：TE28[石油与天然气工程—油气井工程]