摘要
针对碳酸盐岩储层影响因素多、孔渗关系复杂、非均质性较强、储层评价难度大的实际,以四川盆地川中地区磨溪构造嘉二段碳酸盐岩储层为例,运用灰色模糊理论,优选孔隙度、渗透率、含水饱和度、排驱压力、平均孔喉半径、储层有效厚度以及渗透率变异系数、突进系数和极差等作为储层评价因素,对该区碳酸盐岩储层进行评判。采用灰色关联分析法确定各评价因素的权重系数,应用模糊综合评判法对碳酸盐岩储层质量进行评价,从而解决了储层评价因素间的关联性和"不确定性"问题。其评价结果与油气实际产能具有很好的一致性,表明这种基于灰色模糊理论的碳酸盐岩储层评价方法切实有效。
According to the actuality that there are much reservoir influential factors,complex relation between porosity and permeability,intensive anisotropism and difficulties to evaluate to carbonate rock reservoirs,T1j2 carbonate rock reservoir in Moxi Structure,centre Sichuan is taken as an example,gray fuzzy theory is used and some elements for reservoir evaluation,such as porosity,permeability,water saturation,expulsion pressure,average pore throat radius,effective thickness,and permeability variation coefficient,dash coefficient and range and so on are optimized.Because of the perplexing relation existing among these evaluation elements,grey association analysis is used to definite the weight coefficients of evaluation elements,and fuzzy comprehensive distinguish method is used to evaluate quality of carbonate rock reservoir,thereby the relation and'uncertainty'of elements for reservoir evaluation is resolved.Evaluation results are well consistent with the actual production of gas and oil,which proves that the method of carbonate rock reservoir evaluation based on grey fuzzy theory is workable.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第5期88-92,共5页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国石油中青年创新基金(06E1018)
四川省重点学科建设项目(SZD0414)
关键词
灰色模糊
碳酸盐岩
储层评价
嘉二段气藏
四川盆地
磨溪构造
grey fuzzy
carbonate rock
reservoir evaluation
T_1j^2 Gas Reservoir
Sichuan Basin
Moxi Structure
