断层泥摩擦系数的影响因素.pdf

015年6月
大庆石油地质与开发
第34卷第3期
Petroleum Geology and Oilfield Development in Daqing
Vol. 34 No. 3
DOI:10.3969/J.ISSN.1000-3754.2015.03.007
断层泥摩擦系数的影响因素
吕端川2吕延防2王岐王万军4
1.东北石油大学地球科学学院,黑龙江.大庆163318;2.油气藏形成机理与资源评价黑龙江省重点实验室,黑龙江大庆
163318;3.大庆油田有限责任公司第二采油厂,黑龙江大庆163461;4.大庆钻探τ程公司钻技一公司,黑龙江大庆163461)
摘要:在断层型油藏的注水开发过程中,过大的注水压力可能导致控圈断裂活化。为了保证生产安全,結要根
据断裂的最大静摩擦力凋整注水压力,而断层泥的摩擦系数是断裂活化条件下发生摩擦滑移时重要的物理参数。
通过对岩石样品所夹断层泥的摩擦实验发现,在断层活化条件下断层泥的摩擦系数随正应力、断层泥含量及黏
上成分、温度、含水量等的增加而降低。困此,在正应カ大、泥质含量高、黏土成分富集、温度高、含水率高
时控圈断裂的摩擦系数低,稳定性较差,断裂在注水压力变化时易滑动。
关键词:断裂;摩擦系数;影响因素;断层型油藏;注水开发
中图分类号:TE121
文献标识码:A
文章编号:1000-3754(2015)03-0042-05
INFLUENCING FACTORS ON THE FRICTION
COEFFICIENT OF THIE FAULT GOUGE
U Duanchuan:2, LU Yanfang", WANG Qi, WANG Wanjun
(1. College of eosciences, Northeast Petroleum University, Daging 163318, China; 2. Heilongjiang Province
Key Laboratory in Reseroir Forming Mechanism and Resource Evaluation, Daqing 163318, China; 3. No.2
Oil Production Plant of Daging Oilfield Company Ltd., Daqing 163461, China; 4. No. 1 Drilling
Technology Company of Daging Drilling Engineering Company, Daging 163461, China)
Abstract During the process of the waterflooding in the fault-lype reservoir, the excessive water injection pressure
may lead to the fracture activation that controls the trap. In order to ensure the operation and production safety, the
water injection pressure must be adjusted according to the maximum static friction of the fracture, and the friction
coefficient of the fault gouge is one of the important physical parameters in the process of the friction and sliding of
the activated fracture. Through the experiment of the fault clay/pug friction between the rock samples discovers that
under the conditions of the above activation, the friction eficient of the fault gouge drops with the increase of the
normal stress, fault gouge content and composition, temperature and water content and so on. So in the places
higher normal stress, larger shale content and clay composition, higher temperature and water content, the friction
coefficient of the faults that control the trap is lower, its stability is rathe
er poorer
the fractures are prone to slip un-
der the change of the water injection pressure
收稿日期:2014-03-27改回日期:2014-06-03
基金项目:国家自然科学基金项目(41372154)、中国石油科技创新基金项目(2012D-5006-0110)、东北石油大学校青年
科学基金项目(2013NQ1270)。
作者简介:吕端川,男,1987年生,在读硕士,从事油气藏形成与资源评价工作。
E-mail:duan227@126.com