低孔低渗储层产能评价方法——以东濮凹陷卫城油田为例  

A Method of Productivity Evaluation in Low Porosity and Low Permeability Reservoirs——By Taking Weicheng Oilfield in Dongpu Depression for Example

作　　者：赫志兵[1,2] 汪忠浩[3,4] 张娟[3,4] 秦菲莉[5] 李凤琴[5] 杜淑艳[5] 伍东 

机构地区：[1]中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室,北京100083 [2]中国石油长城钻探工程有限公司测井公司,辽宁盘锦124011 [3]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023 [4]长江大学地球物理与石油资源学院,湖北荆州434023 [5]中原油田测井公司,河南濮阳457001

出　　处：《石油天然气学报》2010年第6期81-86,共6页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2008ZX0520-005)

摘　　要：卫城油田是一个被断层复杂化的长轴背斜构造控制的低孔低渗油藏。挑选了该区不同孔隙结构的岩心,通过孔渗试验、不同方式的岩电试验和相渗试验等试验研究发现,利用"岩心刻度测井"技术确定孔隙度模型以三孔隙度交会法为佳。计算饱和度的阿尔奇模型参数选用了高温高压测量或半渗透隔板测量的岩电试验结果。以渗流力学理论和低渗透砂岩储层测井解释理论为基础,根据油井实际生产的工作制度理论计算油层产能指数,采用计算得出的的油层产能指数与相对渗透率试验求取的油层有效渗透率建立储层产能模型。实际处理结果符合构造油藏的一般规律,解释符合率达87%以上。Weicheng Oilfield was a low porosity and low permeability reservoir,which was controlled by complex long axis anticline of faults.The reservoir rocks with different pore structures in the area were chosen for pore test from litho-electric experiments of different modes and relative permeability experiment.It was found out that the accuracy of log interpretation with'core calibration'was optimal for establishing a model by using three porosity cross-plot.The parameters of Archie model should be chosen from the results of the litho-electric experiments by using high temperature and high pressure measurement method or semi-permeable membrane method.By using the theory of percolation mechanics and the logging interpretation of low porosity and low permeability sandstone reservoir,the productivity index(PI)calculation could be theoretically obtained based on the working system of the production of wells.The reservoir productivity model is established based on the relationship of PI and effective permeability from the relative permeability experiment.The results of logging interpretation is conformed with the general rule of structural reservoir in Weicheng Oilfield,the coincidence rate is up to 87%.

关 键 词：孔渗试验 岩电试验 相渗试验 产能指数 卫城油田 低孔低渗油藏 

分 类 号：P618.13[天文地球—矿床学]