突变评价法在压裂选井选层中的应用  

OPTIMIZING WELL AND HORIZON FOR FRACTURING BY CATASTROPHE THEORY

作　　者：李远超[1] 师俊峰[2] 

机构地区：[1]中国石油大学提高采收率中心.北京 [2]中国石油勘探开发研究院采油所

出　　处：《钻采工艺》2008年第6期56-58,168,共3页Drilling & Production Technology

基　　金：国家教育部博士基金资助项目(20030425001)

摘　　要：应用突变理论和模糊数学相结合的方法产生突变模糊隶属函数,并由此建立压裂井和层位的综合评价及优选模型。该模型首先建立优选压裂井和层位的综合评价指标体系结构,并对指标参数进行归一化处理;然后应用突变模糊隶属函数法,对压裂井和层位进行综合评价和优选。该模型避免了模糊评价法、人工神经网络及层次分析等方法的弱点,减少主观性又不失科学性,对压裂选层选井具有指导意义。A new assessment method combined catastrophe theory and fuzzy mathematics was established and applied for the first time to evaluate and select the good wells and horizons to fracture preferentially in which subordinate functions of assessment indexes were derived with the combination of catastrophe theory and fuzzy mathematics.Based on these subordinate functions,comprehensive values of all candidate wells and horizons were calculated,on which we based to select the better wells or horizons to develop preferentially.From example testing,it showed that result evaluated by the assessment method was in accord with other assessment method's very well.The method can ensure the veracity and creditability of the evaluated result and avoid the randomicity and troubling of hierarchy process,factor analysis,fuzzy comprehensive appraisal and other assessment methods.

关 键 词：压裂 选井 评价方法 突变理论 模糊数学 

分 类 号：TE357[石油与天然气工程—油气田开发工程]