[1]李博锋,王雷雷,张思琪,等.高强度CT110 连续管环焊对接工艺[J].焊管,2023,46(7):83-87.[doi:10.19291/j.cnki.1001-3938.2023.07.012]
 LI Bofeng,WANG Leilei,ZHANG Siqi,et al.Butt Welding Process of CT110 High Strength Coiled Tubing[J].,2023,46(7):83-87.[doi:10.19291/j.cnki.1001-3938.2023.07.012]
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高强度CT110 连续管环焊对接工艺()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
46
期数:
2023年第7期
页码:
83-87
栏目:
作业技术与装备
出版日期:
2023-07-19

文章信息/Info

Title:
Butt Welding Process of CT110 High Strength Coiled Tubing
文章编号:
10.19291/j.cnki.1001-3938.2023.07.012
作者:
李博锋王雷雷张思琪张涛
1. 中国石油宝鸡石油钢管有限责任公司,陕西 宝鸡 721008;
2. 中油国家石油天然气管材工程技术研究中心有限公司,西安 710018
Author(s):
LI Bofeng WANG Leilei ZHANG Siqi ZHANG Tao
1. CNPC Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008, Shaanxi, China; 2. Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods Co., Ltd., Xi’an 710018, China
关键词:
连续管环焊力学性能水平井
Keywords:
coiled tubing girth welding mechanical properties horizontal well
分类号:
TG444.74;TE931.2
DOI:
10.19291/j.cnki.1001-3938.2023.07.012
文献标志码:
A
摘要:
为了满足连续管在超长水平井中的作业需求,延长连续管使用寿命,解决连续管下入深度不足的问题,针对CT110钢级Φ50.8 mm×4.0 mm连续管,设计了合理的环焊对接工艺,并进行了焊接接头的检测评价。结果表明,该工艺下焊接接头的强度可达835 MPa以上,疲劳寿命达到母材的36%~50% ,并具有良好的塑性及抗内压等力学性能,可满足现场施工需要。现场采用该焊接工艺,将两盘长度为4 500 m、规格为Φ50.8 mm×4.0 mm的CT110连续管进行对接后在长庆油田某井中完成了水平井通洗井作业和首段射孔作业,均取得了良好的效果。
Abstract:
In order to meet the needs of coiled tubing work in ultra long horizontal wells, extend the service life of coiled tubing and solve the problem of insufficient running depth of coiled tubing, a reasonable girth welding butt process is designed and welded joints of CT110 grade Φ50.8 mm× 4.0 mm coiled tubing are inspected and evaluated. The results show that under the process, the strength of the butt joint can reach more than 835 MPa, the fatigue life can reach 36%~50% of the base metal, and has good plasticity and internal pressure resistance, which meet the needs of on?ite field operation. The welding process is adopted on site. After butt welding of two plates of Φ50.8 mm× 4.0 mm CT110 coiled tubing with length of 4 500 m, the horizontal well flushing and first perforation were completed in a well in Changqing oilfield and works well.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2022-08-01
基金项目: 中国石油天然气集团有限公司科学研究与技术开发项目“致密气及页岩气井连续管带压完井与采气一体化技术现场试验”(项目编号2022ZS26)。
作者简介:李博锋(1981—),男,陕西宝鸡人,高级工程师,主要从事油气管材的焊接及检测工作。
更新日期/Last Update: 2023-07-19