不同勘探阶段圈闭构造模糊综合评判的数学模型

MATHEMATICAL MODELS FOR FUZZY COMPREHENSIVE TRAP STRUCTURE EVALUATION IN DIFFERENT PHASE OF EXPLORATION

长庆勘探局物探处

Geophysical Prospecting Department, Changqing Exploration Bureat

圈闭构造的评价过程实质是多元分析与多元决策加上模糊处理的问题。确定生、锗、盖、构造为四种评价因素,以地震地层解释资料为根据量化各因累,进而建立圈闭构造与油气之间的模糊矩阵。以H-W地区圃闭构造的评价为例,建立了一套可适应不同勘探阶段圈闭构造评价的多级模糊综合评判的数学模型,为油气勘探工作提供了一种评价方法。

The process of the evaluation for trap structure is,in essence,a multielement analysis,a mullidecision as well as a fuzzy processing. Elements such as oil-generation,oil-storage,the cap rock and the structural order are considered as the evaluation factors in Sichuan Provine. By quantification of these factors according to the data from seismic stratigraphic interpretation, the fuzzy matrix relevant to the trap as well as its oil prospect could be derived out. Mathematic models of multilevel fuzzy comprehensive evaluation for trap structure in different phase of exploration in H-W area were set up and it would possiblely be a useful tool for oil/gas evaluation in a general sense.