| 基于流场强度评价的点坝砂体特高含水期水平井挖潜技术 |
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| 引用本文： | 郭奇,李祯,李平.基于流场强度评价的点坝砂体特高含水期水平井挖潜技术[J].现代地质,2021,35(2):396-402. |
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| 作者姓名： | 郭奇 李祯 李平 |
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| 作者单位： | 1.中国石化胜利油田分公司 勘探开发研究院,山东 东营 2570002.胜利石油管理局 博士后科研工作站,山东 东营 2570003.胜利石油工程公司 测井公司,山东 东营 2570004.中国石油大学(华东) 机电装备总厂,山东 青岛 266555 |
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| 基金项目： | 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)。 |
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| 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16.4×104 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。
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| 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 |
| 收稿时间： | 2019-06-20 |
| 修稿时间： | 2019-10-09 |
Horizontal Well Potential Digging Technology of Point-bar Sandbody in Ultra-high Water Cut Stage:Evaluation of Flow Field Intensity |
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| GUO Qi,LI Zhen,LI Ping.Horizontal Well Potential Digging Technology of Point-bar Sandbody in Ultra-high Water Cut Stage:Evaluation of Flow Field Intensity[J].Geoscience——Journal of Graduate School,China University of Geosciences,2021,35(2):396-402. |
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| Authors: | GUO Qi LI Zhen LI Ping |
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| Institution: | 1. Exploration and Development Institute, SINOPEC Shengli Oilfield Company,Dongying,Shandong 257000,China2. Working Station for Postdoctoral Scientific Research, Shengli Oilfield Company,Dongying,Shandong 257000,China3. Logging Branch of Shengli Petroleum Engineering Company,Dongying,Shandong 257000,China4. Mechanical and Electrical Equipment Factory,China University of Petroleum (East China),Qingdao,Shandong 266555,China |
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| Abstract: | 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 15th years.This new method provides a reference for well location deployment of point-bar sandbody in high water cut stage. |
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| Keywords: | medium-high permeability reservoir ultra-high water cut stage point-bar sedimentation internal configuration flow field intensity |
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