摘要
济阳坳陷古近系不整合结构的形成受沉积间断时间、母岩岩性、古地貌、古气候和保存条件等地质因素的影响。针对不整合结构形成影响因素多、类型识别难度大等问题,在对影响不整合结构的地质因素综合分析的基础上,提出了运用模糊综合评判法划分不整合面结构类型的有效方法。考虑了不同地质因素对不整合结构类型的不同影响,并根据地质家的经验和对不整合结构类型的影响程度赋予不同地质因素不同的权重值,使评价因素定量化,能及时、迅速地在区域范围内划分不整合结构类型。
The formation of unconformity structure in Jiyang Depression was influenced by five geological factors,such as the lithology of parent rocks,the palaeoclimate,the depositional interrupted time,the palaeo -geomorphology and the conservation conditions.Because there were more influencial factors on formation of the unconformity,it was difficult to identify the types of each unconformity.A new method for determining the unconformity structure type with multiple fuzzy comprehensive evaluation method was developed on the basis of a comprehensive analysis on the geological factors.When an unconformity is assessed by way of fuzzy judgment,the result of the geology evaluation of unconformity is quantified.It is considered that different geological factors have different effects on the unconformity structure type.It is beneficial for identifying the unconformity structure types in the regional context timely and rapidly,and it provides a basic guarantee for studying the control of reservoir formation of unconformity structures.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第5期170-173,共4页
Journal of Oil and Gas Technology
基金
中国石油化工集团公司重点科技攻关项目(P06012)
关键词
济阳坳陷
不整合结构类型
控制因素
模糊综合评判
Jiyang Depression
unconformity structure type
controlling factors
fuzzy comprehensive evaluation
