缝洞型碳酸盐岩储层酸压产水机理及控水对策  

Research on water producing mechanism of post-acid fracturing and water controlling measures for fracture-cave type carbonate reservoir

作　　者：牛新年[1] 蔡明金[1] 田东江[1] 李东亮[1] 王春雷[2] 

机构地区：[1]中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000 [2]西南石油大学油气藏地质开发国家重点实验室,四川成都610500

出　　处：《油气藏评价与开发》2017年第3期34-38,共5页Petroleum Reservoir Evaluation and Development

基　　金：国家科技重大专项"塔里木盆地海相碳酸盐岩油气资源潜力;有利勘探区带评价与目标优选"(2011ZX05004-004)

摘　　要：在酸压直接见水井返排特征分析基础上,结合该类井地质油藏特征及酸压裂缝延伸规律,探究了酸压井直接出水机理,包括钻揭深度大酸压直接沟通水体、缝高失控沟通底部水体和人工裂缝与大断裂沟通导致深部水体上窜三个方面。基于酸压出水原因,从工程角度出发,提出了有效控制酸压出水的工艺技术对策,即合理控制完钻深度、限制裂缝垂向延伸、具有控水功能的酸液体系和转向酸压等一系列控水技术措施。研究成果为该类油藏成功有效酸压提供了技术思路。Based on the analysis of the characteristics of the wells those who had flowback with water after acid fracturing, and combined with the reservoir geological features with acid fracturing fracture propagation rule of these wells, the mechanism of flowing back with water after acid fracturing was explored, including three aspects： the water communicated directly after acid fracturing with deep drilling depth, the bottom water communicated by the fracture height out of control and the move-up water caused by the communication of the artificial fracture and the major fault. Based on the reason of water breakthrough after acid fracturing, and from the engineering standpoint, the technique to control water breakthrough was put forward, which controlled the drilling depth reasonably, limited the fracturing to extend vertically, had acid system with the function of water control and diverted acid fracturing, et al. The research provides technique ideas for the successful acid fracturing.

关 键 词：残酸返排 酸压产水 转向酸压 控缝高 控水对策 

分 类 号：TE357[石油与天然气工程—油气田开发工程]