断层封闭模糊评判中权重系数及隶属函数的分析应用  

Analysis and application of weight coefficient and attribution function during fuzzy evaluation of fault sealing

作　　者：李储华[1] 罗龙玉[1] 陈平原[1] 王路[1] 

机构地区：[1]中国石油化工股份有限公司江苏油田分公司地质科学研究院,江苏扬州225009

出　　处：《复杂油气藏》2009年第1期5-9,13,共6页Complex Hydrocarbon Reservoirs

摘　　要：高邮凹陷断裂系统发育,断层封闭性评价是勘探工作的重要内容。在断层封闭性评价过程中,由于断层封闭性受多种因素影响,模糊数学成了评判断层封闭性的重要工具。模糊数学评判的关键内容是确定权重系数及构建隶属函数,因此,本次研究首先依据断层封闭性的主要影响因素确定模糊数学评价的论域集,理清各影响因素在断层封闭性的主次作用,利用定性排列定量转化法确定各个主要影响因素的权重系数;并分析各影响因素的变化对封闭性影响的变化规律,建立合适的隶属度函数。在此基础上,对高邮凹陷断层封闭性进行模糊评价,取得了较好的效果。The fault systems are rich in Gaoyou sag, so the evaluation of the fault sealing is the important. There are many geological factors controlling the fault sealing, and the fuzzy mathematics is useful to fault sealing evaluation.The key of the work is to comfirm the weight coefficient and establish the attribution function.Firstly,the universe of discourse set of fuzzy mathemevaluation is ruled according to the major influencing facotors, to confirm their weight coefficients by qualitative arrangement and quantitative transform method. Secondly ,the change law of fault sealing with the factor change is analysed ,to built the suitable attribution functions.The fuzzy evaluation of fault sealing in Gaoyou sag has obtained good effects.

关 键 词：高邮凹陷 模糊评价 权重系数 隶属度函数 断层封闭性 

分 类 号：TE121[石油与天然气工程—油气勘探]