石油勘探与开发 >

2021 , Vol. 48 >Issue 5: 1061 - 1068

DOI: https://doi.org/10.11698/PED.2021.05.18

综合研究

天然气顶部重力驱油储气一体化建库技术

  • 江同文 ,
  • 王正茂 ,
  • 王锦芳
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  • 1.中国石油勘探与生产分公司,北京 100007;
    2.中国石油勘探开发研究院,北京 100083
江同文（1968-）,男,四川三台人,博士,教授级高级工程师,主要从事油气田开发、储气库管理等研究工作。地址：北京市东城区东直门北大街9号,中国石油勘探与生产分公司,邮政编码：100007。E-mail: jiangtw-tlm@petrochina.com.cn

收稿日期: 2021-01-21

  网络出版日期: 2021-09-17

基金资助

中国石油天然气股份有限公司前期研究项目“水介质类和天然气介质类重大开发试验跟踪评价前期研究（2021）”（2021-40217-000041）; 长庆油田技术开发项目“长庆油田‘二三结合’提高采收率技术及潜力评价研究”（RIPED-JS-50016）

收起

Integrated construction technology for natural gas gravity drive and underground gas storage

  • JIANG Tongwen ,
  • WANG Zhengmao ,
  • WANG Jinfang
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  • 1. Exploration & Production Company, PetroChina, Beijing 100007, China;
    2. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China

Received date: 2021-01-21

  Online published: 2021-09-17

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摘要

基于天然气驱油重力、混相、降黏和渗吸机理,提出了天然气驱油储气一体化建库技术,同时对该技术的技术内涵、储气库选址原则、运行参数优化流程及优点进行了系统阐述。一体化建库可充分利用天然气驱油的重力、混相、降黏和渗吸等机理,既能大幅度提高原油采收率,又可逐步协同建成战略储气库,实现采油与天然气调峰双赢。与气藏型储气库相比,一体化建库具有增加原油产量和天然气储转费两种盈利模式,效益更好;同时,一体化建库在建库初期保持高压注气,投产初期为小吞小吐,中后期过渡到大吞大吐,周期应力变化不强,克服了气藏型储气库始终保持大吞大吐运行、注采周期内存在高强度应力变化的缺点。一体化建库的关键技术为油藏选址及评价,重力驱油、驱油压力优化和储气库运行参数优化等。经前期先导试验证实,该技术已初步取得成功,是中国快速发展储气库建设的新思路。图16表3参25

关键词： 天然气驱; 顶部重力驱; 一体化建库; 储气库; 参数优化; 提高采收率

本文引用格式

江同文 , 王正茂 , 王锦芳 . 天然气顶部重力驱油储气一体化建库技术[J]. 石油勘探与开发, 2021 , 48(5) : 1061 -1068 . DOI: 10.11698/PED.2021.05.18

Abstract

Based on the mechanisms of gravity displacement, miscibility, viscosity reduction, and imbibition in natural gas flooding, an integrated reservoir construction technology of oil displacement and underground gas storage (UGS) is proposed. This paper systemically describes the technical connotation, site selection principle and optimization process of operation parameters of the gas storage, and advantages of this technology. By making full use of the gravity displacement, miscibility, viscosity reduction, and imbibition features of natural gas flooding, the natural gas can be injected into oil reservoir to enhance oil recovery and build strategic gas storage at the same time, realizing the win-win situation of oil production and natural gas peak shaving. Compared with the gas reservoir storage, the integrated construction technology of gas storage has two profit models: increasing crude oil production and gas storage transfer fee, so it has better economic benefit. At the same time, in this kind of gas storage, gas is injected at high pressure in the initial stage of its construction, gas is injected and produced in small volume in the initial operation stage, and then in large volume in the middle and late operation stage. In this way, the gas storage wouldn’t have drastic changes in stress periodically, overcoming the shortcomings of large stress variations of gas reservoir storage during injection-production cycle due to large gas injection and production volume. The keys of this technology are site selection and evaluation of oil reservoir, and optimization of gravity displacement, displacement pressure, and gas storage operation parameters, etc. The pilot test shows that the technology has achieved initial success, which is a new idea for the rapid development of UGS construction in China.

Key words： natural gas drive; gravity displacement; integrated gas storage construction; gas storage; parameter optimization; EOR

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