岩石冲击开裂裂缝条数预测模型的建立与验证  

Establishment and verification of the model for predicting the fracture number of rock impact cracking

作　　者：李海波 陈德春[2,3] 刘卫东 吴晓东[3] 潘志华 

机构地区：[1]青岛杰瑞自动化有限公司,山东青岛266071 [2]中国石油大学(华东)石油工程学院,山东青岛266555 [3]中国石油大学(北京)石油天然气工程学院,北京102249 [4]东营市河口区油区工作办公室,山东东营257200

出　　处：《西安石油大学学报（自然科学版）》2012年第2期49-53,120,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：中国石油化工股份有限公司项目"水力裂缝层内爆炸提高采收率技术基础研究"(编号:P03051)

摘　　要：利用动态压力脉冲作用于岩心可模拟研究爆燃压裂裂缝开裂条件.影响岩心冲击开裂裂缝条数的因素包括岩心外径、岩心长度、落物质量、落物高度、冲击能量、平均加压速率、岩心抗拉强度.基于实验数据,运用一级模糊综合评判法研究了不同裂缝条件下这些因素的权重和关联度,建立了冲击开裂裂缝条数预测模型,并通过实验验证了预测模型的准确性,其预测精度达到91.7%.The rock cracking condition in exploding fracturing is simulated by the action of dynamic pulse pressure on core.The factors of influencing the number of the fractures produced in the core include core diameter,core length,weight mass,weight height,impact energy,average pressurization rate and core tensile strength.The weights and correlation degrees of the factors are calculated using first-order fuzzy comprehensive evaluation based on original experimental data,and the model for forecasting the number of the fractures is established.The model is verified by experimental data,and it is shown that the forecasting accuracy of the model can reach to 91.7%.

关 键 词：爆燃压裂 岩石开裂 裂缝条数 预测模型 

分 类 号：TE357[石油与天然气工程—油气田开发工程]