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作 者:郭奇 李祯 李平[4] GUO Qi;LI Zhen;LI Ping(Exploration and Development Institute,SINOPEC Shengli Oilfield Company,Dongying,Shandong 257000,China;Working Station for Postdoctoral Scientific Research,Shengli Oilfield Company,Dongying,Shandong 257000,China;Logging Branch of Shengli Petroleum Engineering Company,Dongying,Shandong 257000,China;Mechanical and Electrical Equipment Factory,China University of Petroleum(East China),Qingdao,Shandong 266555,China)
机构地区:[1]中国石化胜利油田分公司勘探开发研究院,山东东营257000 [2]胜利石油管理局博士后科研工作站,山东东营257000 [3]胜利石油工程公司测井公司,山东东营257000 [4]中国石油大学(华东)机电装备总厂,山东青岛266555
出 处:《现代地质》2021年第2期396-402,共7页Geoscience
基 金:国家科技重大专项“特高含水期提高采收率技术”(2011ZX05011);长江学者和创新团队发展计划“复杂油藏开发和提高采收率的理论与技术”(IRT1294)。
摘 要:针对高含水期油藏点坝砂体剩余油挖潜困难等问题,通过室内实验明确中高渗储层高倍水驱物性变化规律,确定时变数值模拟方法,基于渗流场强度的评价将油藏划分为三类渗流特征分区,通过点坝砂体内部构型的建模方法确定特高含水期水平井的部署位置。研究表明:基于流场强度分布的水平井部署方法能够突出反映高含水期点坝砂体内部流体流动的非均质性,在弱流场强度范围内部署水平井较其他区域部署水平井的开发效果明显改善。将新的方法应用于港东油田二区块NmⅣ-6-3小层,对该小层进行流场评价并部署一口水平井,初期日产油量77.3 t,预测未来第15年末累计产油量16.4×10^(4)t。新的方法为点坝砂体高含水期开发的井位部署提供借鉴思路。In view of the difficulties in tapping the remaining oil potential of point-bar sandbody in high water cut reservoirs,the changing regularities of physical properties of high water drive in medium and high permeability reservoirs are determined through laboratory experiments,and the time-varying numerical simulation method is determined.Based on the evaluation of seepage field strength,the reservoirs are divided into three types of seepage zones,and the locations of horizontal wells in ultra-high water cut reservoirs are determined by the modeling method of the internal configuration of point-bar sand body.The results show that the method of horizontal well deployment based on flow field intensity distribution can highlight the heterogeneity of fluid flow in point-bar sandbody during the high water cut period,and the development effect of horizontal well deployment in weak flow field intensity range is better improved than in other areas.The new method is applied to Nm Ⅳ-6-3 subzone in block 2 of the Gangdong Oilfield.The flow field of the subzone is evaluated and a horizontal well is deployed.The initial daily oil production was 77.3 tons,and the cumulative oil production is predicted to be 164,000 tons at the end of the 15^(th) years.This new method provides a reference for well location deployment of point-bar sandbody in high water cut stage.
关 键 词:中高渗储层 特高含水期 点坝沉积 内部构型 流场强度
分 类 号:TE341[石油与天然气工程—油气田开发工程]
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