深井、超深井固井关键技术进展及实践  

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

作　　者：于永金 夏修建 王治国 廖富国 刘斌辉 丁志伟 YU Yongjin;XIA Xiujian;WANG Zhiguo;LIAO Fuguo;LIU Binhui;DING Zhiwei(CNPC Research Institute of Engineering Technology Co.,Ltd.,Changping 102206,Beijing,China;National Engineering Re-search Center for Oil and Gas Drilling and Completion Technology,Changping 102206,Beijing,China;Cementing Company,CNPC Western Drilling Engineering Co.,Ltd.,Karamay 834000,Xinjiang,China;Chuandong Drilling Company,CNPC Chuanqing Drilling Engineering Co.,Ltd.,Chongqing 400021,China)

机构地区：[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　　处：《新疆石油天然气》2023年第2期24-33,共10页Xinjiang Oil & Gas

基　　金：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)。

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。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 tem-perature-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 de-veloped independently in China have been applied to deep well cementing operations in Sichuan,Tarim and Bohai Bay and other ba-sins,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 tem-perature in Dagang Oilfield.Nowadays,the increasing complexity of targets of hydrocarbon exploration and development leads to a se-ries 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.

关 键 词：深井超深井 固井 外加剂 固井液 固井工具 固井工艺 

分 类 号：TE256[石油与天然气工程—油气井工程]