新型卡瓦式井下节流器打捞工具研制及应用.pdf

2010年第39卷
石油矿场机械
第12期第8l页
OIL FIELD EQUIPMENT
2010,39(12):81~83
文章编号:1001-34822010)12-0081-03
新型卡瓦式井下节流器打捞工具研制及应用
肖述琴2,于志刚2,商永滨,卫亚明2,杨旭东2
(1.长庆油田公司油气工艺研究院,西安710018;2.低渗透油气田勘探开发国家工程实验室,西安710018;
3.西安长庆科技工程有限责任公司,西安710018)
摘要;针对现有エ具打捞未失效卡瓦式井下节流器的同题,设计了一种压编卡瓦式井下节流器中心
杆并使其胶筒回缩的新型打捞工具。现场应用表明:该エ具操作方便、结构合理、性能可靠、易于加
エ;有效提高了卡瓦式井下节流器打捞成功率,缩短了打捞作业时间,节约了打捞费用,在苏里格气
田节流器打捞作业中发挥了重要作用。
关键词:气井;井下节流;打捞工具;胶筒
中图分类号:TE921.9文献标识码:B
Development and Application of Fishing Tool for Slip-type Downhole Throttle
XIAO Shu-qin. 2, YU Zhi-gang, SHANG Yong-bin, WEI Ya-ming, YANG Xu-dong2
(1. Oil &Gas Technology Institute, Changqing Oil field Company, Xi,an 710018, China
National Engineering Laboratory for Ex loration and Develoment of Low-permeability Oil &Gas Fields
Xi'an 710018, China 3. Xi'an Changging Technology Engineering Co, Ld, Xi'an 710018, China)
Abstract: It is difficult for existing tools to fish in slip-type downhole throttle without failure, so a
novel tool for slip-type downhole throttle with a compressible slip center rod is designed. The
compressible slip center rod will make the rubber retraction much easier. The Successful applica
tion also indicates that this new tool shows some features such as easy operation, reasonable
structure, reliable performance and easy processing. This new tool effectively improves the mis
sion success rate of fishing in slip-type downhole throttle, shorten the time of fishing operations
saves the fishing costs and thus plays an important role for fishing work in the Sulige gas field
Key words: gas well; downhole throttle; fishing tool; rubber
在天然气开采中,为了降压、节流、限产,通常在井下节流器,累计应用2700余口井。随着苏里格
气井井下安装节流器。长庆气田广泛应用的节流器气田气井的开采及能量的下降,气井因调产更换节
是卡瓦式井下节流器,它是依靠卡瓦定位、胶筒密流气嘴,需打捞节流器;同时也因井下节流器失效需
封、气嘴配产来实现井筒天然气节流降压,并通过试对其进行打捞更换
井钢丝来完成节流器投放、坐封和打捞等井下作
业。近几年,通过攻关研究,井下节流技术成为长1现有打捞工具存在的问题
庆苏里格气田实现井下节流、井口不加热、不注醇、
卡瓦式井下节流器主要由打捞头、卡瓦、本体、
采气管线不保温、中低压集气等集输新模式的基础,密封胶筒及节流嘴等组成(如图1所示),通常采用
是优化地面流程,实现气田经济规模有效开发的关简式打捞工具进行打捞。筒式打捞工具主要由接
键技术2。目前,苏里格气田所有新投产井皆使用头、心轴、矩形弹簧、定位块、卡爪、锁定套等组成,如
收稿日期:2010-06-12
作者简介:肖述琴(1978-),女,湖北仙桃人,工程师,硕士,主要从事采气工艺研究, E-mail:xsq_cq@ petrochina,com,cn。