胜利油田低渗透油藏压驱开发技术实践与认识
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杨勇(1971—),男,河南遂平人,正高级工程师,博士,从事油气田开发研究及管理工作。E-mail:yangyong.slyt@sinopec.com。

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中国石化科技攻关项目“压驱提速提效开发优化设计技术研究”(P21072-2)。


Practice and understanding of pressure drive development technology for low-permeability reservoirs in Shengli Oilfield
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    摘要:

    胜利油田低渗透油藏资源量丰富,已动用地质储量9.4×108t,采出程度为13.3%,未动用储量2.1×108t,提高采收率及效益动用面临注不进、驱不动、波及差等诸多难题。为了提高低渗透油藏开发效果,胜利油田攻关创新压驱技术。综合运用地质学、渗流力学和油藏工程等理论和方法,采用物理模拟和数值模拟相结合的技术手段,形成了压驱油藏适应性评价标准、室内实验技术体系、油藏工程方案优化设计方法等技术系列,配套了分层压驱、组合缝网体积压裂、调驱等工艺技术。矿场试验表明,压驱能够快速补充地层能量,大幅度提高油井产能及采收率,2020 年3 月以来,低渗透油藏累积实施450 个井组,累积注水量为1 384×104m3,累积增油量为55.7×104t,压驱开发技术正逐步成为低渗透油藏主导开发新技术。

    Abstract:

    The low-permeability reservoirs in Shengli Oilfield are rich in resources,with produced geological reserves of 9.4×108t,recovery of 13.3%, and unproduced reserves of 2.1×108t. Enhanced oil recovery and benefit development face many challenges,such as injection failure, displacement failure,and poor swept volume. In order to improve the development effect of lowpermeability reservoirs,Shengli Oilfield has innovated the pressure drive technology to tackle these problems. A series of technologies have been developed, including the evaluation criteria for the adaptability of pressure drive technology,the laboratory experimental technology system, and the optimization design method for reservoir engineering schemes by comprehensively applying theories and methods of geology, fluid flow mechanics in porous medium, and reservoir engineering as well as combining physical and numerical simulation. These technologies are supported by zonal pressure drive,combined network volume fracturing,and profile control and drive processes. Field tests showed that pressure drive can quickly replenish formation energy and dramatically improve oil well productivity and recovery. Since March 2020,450 well groups have been implemented in low-permeability reservoirs,with a cumulative injection of 1 384×104m3and a cumulative oil increase of 55.7×104t. Pressure drive development technology is gradually becoming a new leading development technology for low-permeability reservoirs.

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杨勇,张世明,曹小朋,吕琦,王建,刘海成,于春磊,孙红霞.胜利油田低渗透油藏压驱开发技术实践与认识[J].油气地质与采收率,2023,30(6):61~71

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  • 收稿日期:2022-06-20
  • 最后修改日期:2023-10-20
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  • 在线发布日期: 2023-12-21
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