摘要
玛北斜坡区三叠系百口泉组(T1b)发育低孔-低渗砾岩储层,开发难度较大。为寻找高产层位,为油田后期开发部署提供可靠依据,针对T1b储层开展了量化评价研究。以动、静态资料相结合,多参数综合分析为思路,参考试油资料,优选出沉积微相、岩心平均渗透率与流动带指数的乘积、核磁孔隙度与厚度的乘积、τ2谱峰数、压力恢复速率及其曲线形态、含油级别、地层电阻率等作为储层评价指标。确定各指标的分类标准,利用模糊综合评判法将T1b储层划分为4类。经验证,储层评价结果与实际试油结论基本符合,应用效果好。
Low-porosity and low-permeability conglomerate reservoirs were developed in Baikouquan Formation of Triassic System in Mabei Slope,it was difficult for development.For the purpose of searching for high production layer and providing reliable basis for deployment arrangement of the oilfield at the late stage,aquantitative evaluation was performed reservoir evaluation in Baikouquan Formation.In combination with dynamic and static data analyses,the idea of integral analysis of multi-parameters and formation test data were carried out for optimizing sedimentary micrifacies, product of average permeability and flow zone index,product of nuclear magnetic porosity and thickness,amount ofτ2 peak,rate of pressure recovery and the form of its curve,oil-bearing level and formation resistivity as the evaluating indexes.Classification criteria of the indexes were determined and reservoirs in Baikouquan Formation were divided into four categories through integral fuzzy evaluation.The results show that the evaluation result is coincident with that of actual well testing,good result is obtained in application.
出处
《石油天然气学报》
CAS
CSCD
2014年第2期40-44,5,共5页
Journal of Oil and Gas Technology
基金
国家科技重大专项(2011ZX05009-003)
关键词
低孔-低渗
砾岩储层
玛北斜坡区
百口泉组
量化评价
low-porosity and low-permeability
conglomerate reservoir
Mabei Slope Area
Baikouquan Formation
quantitative evaluation
