[1]王方祥,张乾,姜有才,等. 连续油管长水平段防自锁技术[J].油气井测试,2021,30(02):25-29.[doi:10.19680/j.cnki.1004-4388.2021.02.005]
　WANG Fangxiang,ZHANG Qian,JIANG Youcai,et al. Antiselflocking technology for long horizontal section of coiled tubing[J].Well Testing,2021,30(02):25-29.[doi:10.19680/j.cnki.1004-4388.2021.02.005]
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 连续油管长水平段防自锁技术()
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《油气井测试》[ISSN:1006-6977/CN:12-1485/TE]

卷:
30卷
期数:
2021年02期
页码:
25-29
栏目:
出版日期:
2021-04-25

文章信息/Info

Title:
 Antiselflocking technology for long horizontal section of coiled tubing
文章编号:
1004-4388(2021)02-0025-05
作者:
王方祥1; 张乾1; 姜有才1; 郝华松2; 杨鑫1; 李道松1
1.中国石油集团渤海钻探工程公司井下技术服务公司 天津 300280
2.中国石油集团渤海钻探工程公司油气井测试分公司 河北廊坊 065007
Author(s):
 WANG Fangxiang1;  ZHANG Qian1;  JIANG Youcai1;  HAO Huasong2;  YANG Xin1;  LI Daosong1
 1.Downhole Technical Service Branch, CNPC Bohai Drilling Engineering Company, Tianjin 300280, China
2.Well Testing Branch, CNPC Bohai Drilling Engineering Company, Langfang, Hebei 065007, China
关键词:
 ; 1.中国石油集团渤海钻探工程公司井下技术服务公司 天津 3002802.中国石油集团渤海钻探工程公司油气井测试分公司 河北廊坊 065007通讯作者：Email：wangfangxiangcnpc@126.com
Keywords:
 ; horizontal well section;  coiled tubing;  selflocking;  mechanical oscillator;  metal resistance reducer;  friction coefficient;  field application
分类号:
TE357
DOI:
10.19680/j.cnki.1004-4388.2021.02.005
文献标志码:
B
摘要:
 连续油管在长水平井段施工时，经常因螺旋变形而自锁，无法下到预定位置，严重影响施工进度和施工质量。为解决连续油管在长水平井段自锁的问题，利用弹簧蓄能和齿形交错结构，设计了频率可调、振动稳定、适用性强的机械振荡器，研发了新型金属降阻剂配方，总结了矿化度、pH值、温度等对摩擦系数的影响规律，形成连续油管在长水平井段推进的防自锁技术。应用于N×3井连续油管钻塞施工中，机械振荡器振动频率25～37 Hz，金属降阻剂最佳浓度10%～15%，降低摩擦系数40%以上。机械振荡器与金属降阻剂共同使用，可降低连续油管与井壁之间的摩擦力，增加其在水平井段的推进深度，缩短连续油管施工周期，提高施工质量。
Abstract:
 Coiled tubing is often selflocking due to spiral deformation when operation in long horizontal sections of horizontal wells, and cannot reach the predetermined position, which seriously affects the operating progress and quality. In order to solve the selflocking problem of coiled tubing in long horizontal sections, a mechanical oscillator with adjustable frequency, stable vibration and strong applicability was designed using spring energy storage and toothshaped staggered structure, and a new type of metal resistance reducer formula was developed. The influence of salinity, pH value, temperature, etc. on the friction coefficient was summarized. An antiselflocking technology for coiled tubing was founded during advancing in long horizontal sections. The technology was applied to the plug drilling operation with coiled tubing of Well N×3. The vibration frequency of the mechanical oscillator was 25-37 Hz, the optimal concentration of metal resistance reducer was 10%-15%, and the friction coefficient was reduced by more than 40%. The combination of mechanical oscillator and metal resistance reducer can reduce the friction between the coiled tubing and the wellbore, increase its advancement depth in the horizontal section, shorten the coiled tubing operating period, and improve the operating quality.

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备注/Memo

备注/Memo:
 2020-09-07收稿，2021-02-20修回,2021-03-01接受,2021-04-20网络版发表
基金项目 中国石油集团渤海钻探工程有限公司重大工艺研究项目“页岩气长水平段连续油管压裂前作业技术及套变防治研究”（2019ZD18K-04）
王方祥，男，1987年出生，博士，工程师，2017年毕业于中国石油大学（华东）油气井工程专业，现从事石油井下相关工具设备的设计与技术研究工作。电话：022-25934595，15822162989；Email：wangfangxiangcnpc@126.com。通信地址：天津市滨海新区港西大道640渤海钻探工程公司井下技术服务公司测试工程作业部，邮政编码：300280。
更新日期/Last Update: 2021-05-10