海上陆相低渗油藏产能评价方法研究  

Research on productivity evaluation method of continental low permeability reservoirs in offshore oilfield

作　　者：黄俊 HUANG Jun(Hainan Branch of CNOOC(China)Co.,Ltd.,Haikou Hainan 570100,China)

机构地区：[1]中海石油(中国)有限公司海南分公司,海南海口570100

出　　处：《石油化工应用》2022年第8期29-32,38,共5页Petrochemical Industry Application

基　　金：中海石油(中国)有限公司重大科技项目“南海西部油田上产2000万方关键技术研究”,项目编号:CNOOC-KJ 135 ZDXM 38 ZJ 01 ZJ。

摘　　要：针对海上陆相沉积低渗油藏无DST产能测试情况下产能评价难度大的问题,以南海西部陆相低渗油藏产能评价技术实践为基础,对产能评价方法及实践效果进行了研究。研究表明,受低渗储层非均质性、岩性等影响,利用理论公式计算、测压流度计算预测产能误差较大;基于DST产能测试资料建立的区域低渗油藏定向井及水平井产能定量预测图版计算参数少,应用方便,同时,基于区域产能规律建立的试井流度类比取值表为该方法的推广应用提供了支撑,实践效果表明,该方法预测产能平均误差小于5%。研究成果对海上陆相低渗油藏产能释放及商业性开发具有借鉴意义。Aiming at the difficulty of productivity evaluation on offshore continental sedimentary low permeability reservoirs without DST,the productivity evaluation method and practical effect were studied based on the technical practice of productivity evaluation of continental low permeability reservoirs in the western South China Sea.The results showed that,productivity prediction by calculation of theoretical formulas or pressure measurement mobility data exhibited a large deviation,due to the influence of heterogeneity and lithology of low permeability reservoirs.The quantitative productivity prediction map of directional wells and horizontal wells in low permeability reservoirs established by regression of DST data were convenient and efficient,furthermore,the analogy table of well test permeability and formation crude oil viscosity established based on regional DST productivity law provided support for promotion and application of the method.The practical effect showed that the average deviation of the above method predicting productivity was less than 5%.The research results can provide reference for for the release of productivity and commercial development of offshore continental low permeability reservoirs.

关 键 词：低渗油藏 产能评价 流度 陆相沉积 海上油田 

分 类 号：TE348[石油与天然气工程—油气田开发工程]