石油与天然气地质 ›› 2023, Vol. 44 ›› Issue (2): 480-494.doi: 10.11743/ogg20230218

• 方法技术 • 上一篇    下一篇

鄂尔多斯盆地低渗-致密气藏水平井全生命周期开发技术及展望

李进步1,2(), 崔越华1,2(), 黄有根1,2, 费世祥1,2   

  1. 1.中国石油 长庆油田分公司 勘探开发研究院,陕西 西安 710018
    2.低渗透油气田勘探开发国家工程实验室,陕西 西安 710018
  • 收稿日期:2022-07-25 修回日期:2022-12-23 出版日期:2023-03-17 发布日期:2023-03-17
  • 通讯作者: 崔越华 E-mail:ljb2_cq@petrochina.com.cn;cyh168_cq@petrochina.com.cn
  • 第一作者简介:李进步(1974—),男,教授级高级工程师,油气田开发。E-mail:ljb2_cq@petrochina.com.cn
  • 基金项目:
    国家科技重大专项(2016ZX05050);中国石油科技重大专项(2016E-0509)

Technologies and prospect of full-cycle development of low-permeability tight gas reservoirs with horizontal wells, Ordos Basin

Jinbu LI1,2(), Yuehua CUI1,2(), Yougen HUANG1,2, Shixiang FEI1,2   

  1. 1.Research Institute of Exploration and Development,PetroChina Changqing Oilfield Company,Xi’an,Shaanxi 710018,China
    2.National Engineering Laboratory for Exploration and Development of Low-permeability Oil and Gas Reservoirs,Xi’an,Shaanxi 710018,China
  • Received:2022-07-25 Revised:2022-12-23 Online:2023-03-17 Published:2023-03-17
  • Contact: Yuehua CUI E-mail:ljb2_cq@petrochina.com.cn;cyh168_cq@petrochina.com.cn

摘要:

基于鄂尔多斯盆地天然气开发实践,系统描述了低渗-致密气藏地质特征。依据水平井开发的主要对象、技术参数和生产指标等因素,将水平井开发历程划分为实践探索、攻关试验、规模应用和优化提升4个阶段。详细阐述了鄂尔多斯盆地水平井开发的技术内涵,系列开发技术包括多学科甜点优选技术、多层系大井丛整体部署技术、多专业融合导向技术、精细化压裂改造技术以及全生命周期生产管理。综合评价了不同气藏水平井的开发效果及潜力,认为致密气水平井具有良好的开发效果和前景;明确了加强多学科全过程联合研究是水平井技术发展的主要方向,也是实现低品位天然气资源规模、效益开发的关键。今后面对深、薄、低丰度等更为复杂的开发对象,将针对性地优化、提升苏里格等老气田水平井技术,攻关形成庆阳、宜川等新气田水平井配套技术,超前储备页岩气、煤层气等新型天然气资源水平井有效开发技术,为鄂尔多斯盆地天然气上产及稳产提供技术保障。

关键词: 水平井, 开发技术, 低渗-致密气藏, 天然气, 长庆油田, 鄂尔多斯盆地

Abstract:

The geological characteristics of low-permeability tight gas reservoirs (developed mostly with horizontal wells) in the Ordos Basin are systematically described based on previous gas development experiences. A successful development of these reservoirs with horizontal wells usually comprises four stages based on a study of the targets, technical parameters, and performance indicators of the wells: exploring all possibilities, tackling technical problems, scaling up of technology implementation as well as optimization and improvement. The technical connotation of horizontal well development in Ordos Basin is elaborated and represented by a series of development technologies including multidisciplinary sweet spot optimization technology, overall deployment technology of multi-layer large well cluster, multidisciplinary integrated geosteering technology, and fine fracturing technology with a full life cycle production management. A comprehensive evaluation of gas development through horizontal wells from different types of gas reservoirs indicates that horizontal wells perform better in tight gas reservoirs, that strengthening the joint efforts on multi-disciplinary research for the whole process is the main direction of horizontal well technology development as well as the key to a large-scale development of low-grade natural gas resources with profit. For developing reservoirs with more complex conditions such as those buried deep in thin layers with low abundance of gas, horizontal wells will be further improved to deal with the challenges in the brown Sulige gas field where targeted optimization of the technology will be carried out, the green gas fields such as Qingyang and Yichuan where supporting technology will be developed, and the new forms of gas resources such as shale gas, coal-bed methane, etc, that require effective development technologies, thus ensuring a steady increasing gas production in the Ordos Basin.

Key words: horizontal well, exploitation technology, low-permeability tight gas reservoir, natural gas, Changqing Oilfield, Ordos Basin

中图分类号: