基于地应力特征的水平井井眼轨迹与分段压裂优化技术——以塔里木盆地塔中地区碳酸盐岩储集层为例  

Optimization Technology for Horizontal Well Track and Staged Fracturing Based on In-Situ Stress Characteristics:A Case from Carbonate Reservoirs in Tazhong Area,Tarim Basin

作　　者：琚岩[1] 范坤宇 赵崴[1] 谢恩[1] 徐秋云[1] 张文[1] 

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

出　　处：《新疆石油地质》2016年第5期580-584,共5页Xinjiang Petroleum Geology

摘　　要：以往的碳酸盐岩储集层水平井井眼轨迹和分段压裂优化,缺少地应力综合分析依据,无法预测储集层改造的难易程度和井周有利裂缝的沟通状况。以储集层地应力特征为基础,建立了基于波阻抗反演数据体的储集层三维地应力模型,它兼顾了裂缝带的钻遇率、井壁稳定和后期储集层改造等水平井井眼轨迹和分段压裂优化技术。此技术适用于塔里木盆地塔中地区碳酸盐岩非均质性储集层,为其水平井井眼轨迹设计和分段压裂改造提供依据。Previous technologies for horizontal well track and staged fracturing optimization in carbonate reservoirs could not be used to predict the complexity of reservoir stimulation and the connections of favorable fractures around wellbores, due to lack of comprehensive analysis data of in-situ stress. On the basis of reservoir in-situ stress characteristics, a 3D in-situ stress model based on wave impedance inversion data cubes is established for the carbonate reservoirs, which integrates horizontal well track and staged fracturing optimization technologies, including the drilling rate of fracture zones, borehole stability and reservoir stimulation at the late stage. The method is applicable for heterogeneous carbonate reservoirs in Tazhong area, Tarim basin and can provide basis for horizontal well track design and staged fracturing stimulation.

关 键 词：塔里木盆地 塔中地区 碳酸盐岩储集层 地应力特征 水平井 井眼轨迹优化 分段压裂优化 

分 类 号：TE22[石油与天然气工程—油气井工程]