新疆石油天然气 ›› 2023, Vol. 19 ›› Issue (2): 24-33.DOI: 10.12388/j.issn.1673-2677.2023.02.003

• 油气勘探 • 上一篇    下一篇

深井、超深井固井关键技术进展及实践

  

  1. 1.中国石油集团工程技术研究院有限公司,北京昌平  102206

    2.油气钻完井技术国家工程研究中心,北京昌平  102206

    3.中国石油集团西部钻探工程有限公司固井公司,新疆克拉玛依  834000

    4.中国石油集团川庆钻探工程有限公司川东钻探公司,重庆  400021

  • 出版日期:2023-06-20 发布日期:2023-06-20
  • 作者简介:于永金(1982- ),2022年毕业于天津大学能源与环保专业,博士,高级工程师,目前主要从事固井技术研究。(Tel)010-80162259(E-mail)yuyongjindri@cnpc.com.cn
  • 基金资助:

    中国石油天然气集团有限公司“十四五”前瞻性基础性重大科技项目课题5“复杂超深井固井密封完整性技术研究”(2021DJ44105);国家自然科学基金面上项目“理想等效水泥模型萌生裂纹机理及其原位愈合与阻隔效应”(51974339)。

Progress and Application of the Key Technologies of Deep and Ultra-Deep Well Cementing

  1. 1. CNPC Research Institute of Engineering Technology Co.,Ltd.,Changping 102206,Beijing,China; 

    2. National Engineering Research Center for Oil and Gas Drilling and Completion Technology,Changping 102206,Beijing,China; 

    3. Cementing Company,CNPC Western Drilling Engineering Co.,Ltd.,Karamay 834000,Xinjiang,China; 

    4.Chuandong Drilling Company,CNPC Chuanqing Drilling Engineering Co.,Ltd.,Chongqing 400021,China

  • Online:2023-06-20 Published:2023-06-20

摘要:

深层、超深层是油气增储上产的重要接替领域,经过持续技术攻关,深井、超深井固井技术取得显著进步,尤其在抗高温固井外加剂、高温大温差水泥浆、超高温水泥浆等特色体系、抗高温前置液技术以及固井关键工具、精细控压固井、井口逐级憋压、预应力固井等配套新工艺方面均取得重要进展。国内自主研发的特色固井水泥浆体系及配套工艺技术,在四川、塔里木、渤海湾等盆地深井超深井固井中得到推广应用,在亚洲最深直井蓬深6井、国内首口八开八完红星1井、大港油田最高温度井千探1井上的应用效果显著。由于油气勘探开发目标日趋复杂,深井、超深井固井仍面临新的系列挑战,需持续加强深井、超深井固井基础理论、抗高温固井关键材料、工作液体系、功能性固井工具以及配套工艺等方面的研究,为深层、超深层油气勘探开发提供强有力的技术支撑。

关键词:

深井超深井, 固井, 外加剂, 固井液, 固井工具, 固井工艺

Abstract:

Deep and ultra-deep reservoirs are strategic alternatives for increasing reserves and production of hydrocarbons. Recently,significant progress has been made in deep well cementing,especially for special cementing working fluid systems(such as high temperature-resistant cementing additives,cement slurry tolerant of high temperature and large temperature deferences and ultra-high temperature cement slurry),high temperature-resistant spacer,cementing tools,and cementing technology such as precise managed-pressure cementing,gradual wellhead pressure-holding and prestressed cementing. The cement slurry and cementing technology developed independently in China have been applied to deep well cementing operations in Sichuan,Tarim and Bohai Bay and other basins,and present remarkable performance in the successful cementing operations of Well Pengshen 6,the deepest vertical well in Asia,and Well Hongxing 1,the first well in China featuring 8-section-and-8-completion,and Well Qiantan1,the well with the highest temperature in Dagang Oilfield. Nowadays,the increasing complexity of targets of hydrocarbon exploration and development leads to a series of new challenges for cementing deep and ultra-deep wells. Consequently,it is necessary to strengthen the research on the basic theory,key materials,working fluid system,functional tools and technologies for cementing deep and ultra-deep wells,so as to provide more powerful technical support for deep and ultra-deep oil and gas exploration and development.

Key words:

deep and ultra-deep well, cementing, admixture, cementing working fluid, cementing tool, cementing technology

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