暂堵转向分层压裂工艺在薄互层油藏中的应用研究  

Application of temporary plugging and diversion separate layer fracturing in thin interbedded reservoirs

作　　者：金智荣[1] 包敏新[1] 李升芳[2] 张华丽[1] 杲春[1] JIN Zhirong;BAO Minxin;LI Shengfang;ZHANG Huali;GAO Chun(Petroleum Engineering Technology Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 25009,China;Ministry of Exploration and Development of Jiangsu Oilfield Company,SINOPEC,Yangzhou 25009,China)

机构地区：[1]中国石化江苏油田分公司石油工程技术研究院 [2]中国石化江苏油田分公司勘探开发管理部,江苏扬州225009

出　　处：《复杂油气藏》2019年第4期76-78,共3页Complex Hydrocarbon Reservoirs

基　　金：江苏油田分公司"裂缝暂堵转向压裂工艺研究"(JS18016)。

摘　　要：针对因井筒条件或隔层封挡能力达不到机械分层压裂要求的薄互层油藏,提出用暂堵转向分层压裂工艺来实现非均质油层逐层充分改造。建立了暂堵球坐落并有效封堵射孔孔眼的数学模型,分析了暂堵球封堵不同压裂油层厚度所需的最低施工排量条件,评价了Z-1型暂堵球封堵承压和溶解性能,在W-55井实际应用中实现了两个非均质油层的逐层改造。In order to effectively produce reserves of thin interbedded reservoirs,it was proposed to apply the temporary plugging and diversion separate layer fracturing for realizing the layer-by-layer stimulation of each layer when the mechanical separate conditions can not be met.Under the condition that the temporary plugging ball can effectively occupy the perforating blast hole and achieve the sealing and non-shedding construction,the Z-1 type temporary plugging material was optimized based on experiments to meet the requirements of sealing pressure in fracturing process and rapid dissolution after fracturing process.The successful application of well W-55 in the field has realized the goal of layer-bylayer stimulation of two heterogeneous oil layers.

关 键 词：暂堵转向 分层压裂 暂堵球 薄互层 射孔炮眼 

分 类 号：TE35[石油与天然气工程—油气田开发工程]