煤层气藏压裂裂缝损伤演化混沌特性研究  

Chaotic Characteristic Research of CBM Re-servoir Fracturing Network Evolution

作　　者：王婷婷[1] 张会珍[1] 袁伟伟 钱坤 Tingting Wang;Huizhen Zhang;Weiwei Yuan;Kun Qian(School of Electrical Engineering and Information, Northeast Petroleum University, Daqing Helongjiang;School of Petroleum Engineering, Northeast Petroleum University, Daqing Helongjiang;The 3th Oil Production Plant, Daqing Oilfield Corp. Ltd., Daqing Helongjiang)

机构地区：[1]东北石油大学,电气信息工程学院,黑龙江大庆 [2]东北石油大学,石油工程学院,黑龙江大庆 [3]大庆油田有限责任公司第三采油厂,黑龙江大庆

出　　处：《运筹与模糊学》2017年第2期51-60,共10页Operations Research and Fuzziology

基　　金：黑龙江省教育厅科学技术研究项目(12541090)。

摘　　要：煤岩体压裂裂缝系统演化属复杂的非线性动力特征,由损伤引起的煤岩压裂微裂缝,在其分形演化过程中,裂缝系统尖端应力场和微裂缝数目等信息发生改变,需要确定岩石裂缝尖端应力场与微裂缝数目在整个压裂过程中的变化规律,即预测岩体裂缝扩展规模。本文从关联维数,Lyapunov指数等特征量方面揭示煤岩裂缝演化混沌特性的本质。研究裂缝网络演化过程的混沌特征,分析裂缝网络演化混沌特征随压裂过程的变化规律。This electronic fracture of coal-rock fracture system evolution is a complex nonlinear dynamic characteristic of the coal-rock damage caused by fracturing micro-fracture. In its fractal evolution process, the information such as the crack tip stress field and number of micro cracks changes, needs to determine the change rule of rock crack tip stress field and the number of micro cracks in the fracturing process, i.e., the prediction of rock mass fracture scale. The paper reveals the essence of chaotic characteristics of coal-rock cracks evolution from correlation dimension and Lyapunov index, study the chaos characteristics in the process of fracture network evolution and analyze the rule of chaotic characteristics of fracture network evolution changing with the fracturing process.

关 键 词：煤岩 压裂 混沌特性 关联维数 LYAPUNOV指数 

分 类 号：P61[天文地球—矿床学]