考虑平面非均质的低渗透油藏产能计算方法  

PRODUCTIVITY CALCULATING METHOD OF THE LOWPERMEABILITY OIL RESERVOIRS CONSIDERING THE PLANAR HETEROGENEITY

作　　者：崔传智[1] 安然 田彬 李凯凯 袁斌 石磊 CUI Chuanzhi;AN Ran;TIAN Bin;LI Kaikai;YUAN Bin;SHI Lei(College of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China;No. 6 Oil Production Plant, Changqing Oilfield Branch Company, Yulin 718600, China;Sinopec Shanghai Offshore Oil and Gas Exploration and Development Research Institute, Shanghai 200120, China})

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]长庆油田第六采油厂,陕西榆林718600 [3]中石化上海海洋油气分公司勘探开发研究院,上海200120

出　　处：《大庆石油地质与开发》2018年第2期69-73,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项"特高含水后期多措施协同优化研究"(2016ZX05010003-006);教育部创新团队发展计划"复杂油藏开发和提高采收率的理论和技术"(IRT1294)

摘　　要：针对永1沙四段砂砾岩油藏地质条件和当前生产动态,以水电相似原理和等值渗流阻力方法为基础,考虑油藏启动压力梯度和平面非均质性,建立了低渗透油藏产能随时间变化的计算方法并与实际产量进行了对比验证。以注采井间渗透率和储层厚度线性变化规律为例,研究了不同平面非均质分布对产能影响。结果表明:针对低渗透非均质性油藏,在注采压差一定的条件下,采取"高注低采"(在渗透率较高的一端注水、渗透率较低的一端采油)和"厚注薄采"(在厚端注水、薄端采油)的布井方式,更有利于油藏产能和采收率的提高。In view of the geological conditions and current production dynamics of Yong-1 Member Sha-4 conglomerate oil reservoir,on the basis of the hydropower similarity principle and equivalent seepage resistance method,considering the threshold pressure gradient and planar heterogeneity of the oil reservoir,the calculating method of the changed productivity with the time was established and moreover compared and verified by the actual production.Taking the changed law of the producer-injector interwell permeability and linear variation of the reservoir thickness as the examples,the influences of different planar heterogeneous distributions on the productivity were studied.The results show that for the low-permeability heterogeneous oil reservoir,under the condition of the constant injection-production pressure,the well arrangements of "High injection and low production"（Injection at the higher permeability end and production at the end）and "Thick injection and thin production"（Injection at thethicker end and production at the thinner end）are more conducive to the improvement of the reservoir productivity and the enhancement of the recovery.

关 键 词：低渗透油藏 启动压力梯度 渗流阻力 平面非均质性 产能 

分 类 号：TE348[石油与天然气工程—油气田开发工程]