万米深井SDCK1井超大尺寸井眼钻井技术  

Ultra-Large Borehole Drilling Technologies of 10000-Meter Deep Well SDCK1

作　　者：蔡明杰 罗鑫 陈力力[2] 贺明敏 彭浩 何兵 CAI Mingjie;LUO Xin;CHEN Lili;HE Mingmin;PENG Hao;HE Bing(CNPC Chuanqing Drilling Engineering Company Limited,Chengdu,Sichuan,610051,China;PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan,610051,China)

机构地区：[1]中国石油集团川庆钻探工程有限公司,四川成都610051 [2]中国石油西南油气田公司,四川成都610051

出　　处：《石油钻探技术》2024年第2期87-92,共6页Petroleum Drilling Techniques

基　　金：中国石油集团关键核心技术攻关项目“万米超深层油气资源钻完井关键技术与装备研究”(编号:2022ZG0);中国石油集团川庆钻探工程有限公司科技项目“万米特深井大井眼钻柱安全分析与优化技术研究”(编号:CQ2023B-57-1-3)部分研究内容。

摘　　要：万米深井SDCK1井上部超大尺寸井眼段钻进过程中,面临着钻具安全风险高、井眼清洁效率低、井身质量控制难、PDC钻头磨损快、超大尺寸超重套管下入难等技术难点。为解决这些技术难点,开展了钻具安全保障技术、超大尺寸井眼井筒清洁工艺优化、耐大排量冲蚀测斜工具研制、“个性化PDC钻头+大扭矩中空螺杆”优选及超大尺寸超重套管下入技术措施优化等关键技术研究,形成了万米深井超大尺寸井眼安全高效钻井技术。SDCK1井ϕ812.8 mm和ϕ593.7 mm超大尺寸井眼钻进过程中应用了该技术,确保了钻具安全、井眼清洁和井身质量控制(井斜角不超过1°),同时提高了单只进尺和机械钻速,使超大尺寸超重套管顺利下至设计位置。SDCK1井超大尺寸井眼段的顺利完钻,为四川地区超大尺寸井眼段的安全高效钻进提供了技术借鉴。In the drilling process of the upper ultra-large borehole of 10000-meter deep well SDCK1,there are five major technical challenges such as high safety risk of drilling tool,low cleaning efficiency of borehole,difficult quality control of wellbore,fast wear of polycrystalline diamond compact(PDC)bit,and hard ultra-large casing running.To address these challenges,the research on drilling tool safety guarantee technology,optimization of ultralarge borehole cleaning,development of High flow rate and erosion-resistance inclinometer,selection of“personalized PDC bit+high-torque hollow screw”,and optimization of ultra-large and overweight casing running was carried out,and the safe and efficient key drilling technologies of the ultra-large borehole of 10000-meter deep well were formed.The technologies were applied in the ultra-large borehole ofϕ812.8 mm andϕ593.7 mm of Well SDCK1 during drilling,which effectively ensured the safety of the drilling tool,borehole cleaning,and quality control of the wellbore(deviation angle is no more than 1°).In addition,single footage and rate of penetration(ROP)were effectively raised,and the ultra-large and overweight casing running to the designed position was smooth.The successful completion of the ultra-large borehole of Well SDCK1 provides a successful experience for the safe and efficient drilling of ultra-large boreholes in the Sichuan area.

关 键 词：万米深井 超大尺寸井眼 钻具安全 井眼清洁 机械钻速 

分 类 号：TE245[石油与天然气工程—油气井工程]