一种确定控制缝高的人工隔层剂最优用量方法  

A Method of Determining Optimal Amount of Artificial Barrier Agent to Control Fracture Altitude

作　　者：伊向艺[1] 汪道兵[2] 侯艳红 周福建[4] 刘雄飞[4] 李秀辉[4] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(成都理工大学),四川成都610059 [2]成都理工大学能源学院,四川成都610059 [3]中石油长庆油田分公司第三采油厂工艺研究所,宁夏银川750006 [4]中石油勘探开发研究院廊坊分院,河北廊坊065007

出　　处：《石油天然气学报》2012年第6期145-147,170,共3页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2011ZX05037-003)

摘　　要：针对油(气)水互层压裂改造,当油气层距离水层较近时,为了防止压裂沟通水层导致改造失败,研发了人工隔层控制裂缝延伸的工艺技术。该工艺的核心技术之一是确定人工隔层剂的用量。从线弹性断裂力学理论出发,推导出人工隔层剂的理论模型,使用拟牛顿算法并通过编制程序确定了人工隔层剂的最优用量。应用实例表明,施工过程转向压力明显,且压后井温测井表明施工时未沟通到含水层,结合压后日产油83m3且不含水,说明该人工隔层优化设计方法实用可靠。For the reconstruction of oil(gas)and water interbeddings,oil-gas layer was close to water interbeds,an artificial barrier technology was established to control fracture extension for preventing the connection of water layer and causing the failure of fracturing reconstruction.The key of the technology is to determine the amount of the artificial barrier agent.Based on the theory of linear elasticity fracture mechanics,a theoretical model for artificial barrier agent was derived,and quasi-Newton method and method of programming were used to determine the optimal amount of the artificial barrier agent.The application of example shows that pressure diversion is obvious in operation,after fracturing the temperature logging indicates that water layer is not connected in operation.After the fracturing daily oil production rate is 83m3,it indicates that the optimal design of artificial barrier technology is reliable.

关 键 词：人工隔层剂 缝高控制 优化设计 拟牛顿算法 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]