基于不确定理论的压裂压后综合评估技术  

THE TECHNOLOGY OF COMPREHENSIVE EVALUATION AFTER THE FRACTURING BASED ON UNASCERTAINED MATHEMATICS THEORY

作　　者：郭大立[1] 祝凯[1] 陈超峰[2] 张天翔 计勇[1] 

机构地区：[1]西南石油大学理学院,四川成都610500 [2]中国石油新疆油田公司勘探公司,新疆克拉玛依834000 [3]中国石油新疆油田采油工艺研究院,新疆克拉玛依834000

出　　处：《西南石油大学学报（自然科学版）》2011年第4期173-176,202,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家科技重大专项示范工程(2009ZX05062)

摘　　要：水力压裂是油气藏增产的重要措施,压裂工艺技术发展、应用至今,还没有一种方法能够既经济又准确地评估水力裂缝。针对现有各种评估技术(直接诊断技术和间接诊断技术)评估结果具有多样性、不确定性以及技术本身的不成熟性等不足,探索了压后综合评估技术;对有关压裂参数(裂缝长度、裂缝宽度、裂缝高度、压裂液综合滤失系数、裂缝导流能力、裂缝闭合压力等)提出了基于不确定理论的综合评估模型及求解方法。由于综合了各种技术的评估结果(确定、模糊和灰性的信息),最终可获得客观的评估结果。实例表明该模型是有效的和实用的。With the development and application of hydraulic fracture technology,a method which could evaluate the underground hydraulic fracture economically and properly is urgently needed on the spot. As the results of the current various technical assessment are uncertainties,inconsistencies and the immaturity of the technology itself, this paper has researched on the comprehensive evaluation problem of hydraulic fracturing,put out the model to comprehensively evaluate the associated fracturing parameters,such as the fracture length,the fracture height, the fracture width,the fracture conductivity,the fracture closure pressure,the comprehensive fracturing fluid loss coefficient,etc. and offered the solutions of the model which takes the various certainty information,uncertainty information,fuzzy information and grey information all into consideration. At last,the application is also discussed, and its effectiveness and practicality have been showed by examples.

关 键 词：水力压裂 压后 综合评估 不确定理论 参数 

分 类 号：TE357.11[石油与天然气工程—油气田开发工程]