摘要
元坝气田ϕ273.1 mm尾管固井时因裸眼段长、环空间隙小和尾管段长,导致尾管难以下到设计位置、中途开泵受限和替浆计量困难等技术难点。在分析地质状况、井眼条件和工具功能等因素的基础上,采用了具有压力平衡机构、卡瓦内嵌结构的无限极循环尾管悬挂器及配套胶塞系统,并制定了针对性的尾管下入措施。元坝气田7口井应用了无限极循环尾管悬挂器,实现了中途循环解阻,解决尾管难以下到设计位置的问题,尾管到位率100%,胶塞复合信号明显,实现了精准替浆作业,碰压率85%。研究结果表明,元坝气田ϕ273.1 mm尾管固井采用无限极循环尾管悬挂器效果显著,该尾管悬挂器为元坝气田大尺寸、长裸眼段的尾管固井提供了有效的技术手段,具有一定的推广应用价值。
Technical problems were encountered when cementingϕ273.1 mm liners in Yuanba Gas Field,such as long open holes and liner sections and small annular gaps,further leading to difficulties in running the liner to the targeted area and measuring slurry displacement,as well as impeding the midway pump start-up.Considering geological conditions,borehole conditions,tool functions,etc.,a infinite circulation liner hanger,integrating a pressure balance mechanism and embedded slips,was adopted and combined with a supporting rubber plug system.Moreover,specific measures for running the liner were introduced.Implementing the technique in 7 wells of Yuanba Gas Field eliminated the midway circular resistance and allowed liner running into the targeted area safely with a successful rate of 100%.The compound signal of rubber plugs was evident,and slurry replacement was accurate,with a bump rate of 85%.The results confirmed the remarkable performance of the infinite circulation liner hanger in cementing theϕ273.1 mm liner in Yuanba Gas Field.This liner hanger is worthy of popularizing,for it has provided an effective way for cementing large liners with long open holes in Yuanba Gas Field.
作者
郭朝辉
李振
罗恒荣
GUO Zhaohui;LI Zhen;LUO Hengrong(Sinopec Research Institute of Petroleum Engineering,Beijing,102206,China;The No.1 Drilling Company,Sinopec Xinan Oilfield Service Corporation,Chengdu,Sichuan,610500,China)
出处
《石油钻探技术》
CAS
CSCD
北大核心
2021年第5期64-69,共6页
Petroleum Drilling Techniques
基金
国家科技重大专项“高压低渗油气藏固井完井技术”(编号:2016ZX0521005)
中国石化技术推广项目“平衡式尾管安全下入技术推广应用”(编号:P17050-11)联合资助。
关键词
无限极循环
尾管悬挂器
长裸眼段
尾管固井
元坝气田
infinite circulation
liner hanger
long open hole
liner cementing
Yuanba Gas Field
作者简介
郭朝辉(1980-),男,河北元氏人,2003年毕业于江汉石油学院机械设计制造及其自动化专业,2014年获中国石油大学(北京)机械工程专业工程硕士学位,研究员,主要从事石油井下工具的研发与相关管理工作。E-mail:gzh@shelfoil.com。
