[1]李鸿斌,张满年,毕宗岳,等.国产CT150 连续管性能研究及应用[J].焊管,2023,46(7):51-57.[doi:10.19291/j.cnki.1001-3938.2023.07.007]
 LI Hongbin,ZHANG Mannian,BI Zongyue,et al.Performance Research and Application of Domestic CT150 Grade Coiled Tubing[J].,2023,46(7):51-57.[doi:10.19291/j.cnki.1001-3938.2023.07.007]
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国产CT150 连续管性能研究及应用()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
46
期数:
2023年第7期
页码:
51-57
栏目:
试验与研究
出版日期:
2023-07-19

文章信息/Info

Title:
Performance Research and Application of Domestic CT150 Grade Coiled Tubing
文章编号:
10.19291/j.cnki.1001-3938.2023.07.007
作者:
李鸿斌张满年毕宗岳张锦刚赵签鲜林云刘云王晓波
1. 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;
2. 中国石油宝鸡石油钢管有限责任公司,陕西 宝鸡 721008;
3. 陕西省高性能连续管重点实验室,陕西 宝鸡 721008;
4. 新疆油田公司应急抢险救援中心,新疆 克拉玛依 834000
Author(s):
LI Hongbin ZHANG Mannian BI Zongyue ZHANG Jingang ZHAO Qian XIAN Linyun LIU Yun WANG Xiaobo
1. Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods Co., Ltd., Xi’an 710018, China; 2. CNPC Baoji Petroleum Steel Pipe Co., Ltd., Baoji 721008, Shaanxi, China; 3. Shaanxi Province Key Laboratory of High Performance Coiled Tubing, Baoji 721008, Shaanxi, China; 4. Emergency Rescue Center of Xinjiang Oilfield Company, Karamay 834000, Xinjiang, China
关键词:
CT150连续管组织力学性能疲劳性能
Keywords:
CT150 coiled tubing microstructure mechanical properties fatigue properties
分类号:
TG113.25;TE931.2
DOI:
10.19291/j.cnki.1001-3938.2023.07.007
文献标志码:
A
摘要:
为满足超深井、超长水平井及高压井开发对连续管强度、下入深度、承压能力提出的要求,研制开发了目前世界最高强度CT150连续管,并在油田开展应用。通过金相、力学性能和低周疲劳等试验,研究了国产CT150连续管的强度、塑性、承压能力和弯曲疲劳寿命等性能。结果显示,国产CT150连续管屈服强度为1 078 MPa,抗拉强度为1 141 MPa,硬度<363HV1.0,伸长率为21%;Φ50.8 mm×4.0 mm规格CT150连续管爆破压力达196.2 MPa,挤毁压力达161.4 MPa,疲劳寿命达到248次。研究表明,CT150连续管具有较好的强塑性,相比同规格CT110连续管,疲劳寿命提高了1倍,承载承压能力也大幅提升,相同条件下下入深度可提高36.4%。该产品在新疆油田总计应用28口井,下井作业51次,有效减少管材螺旋自锁现象发生,显著提升长水平段的下入深度,同时具有优异的承压性能,大幅提高了作业的安全性。
Abstract:
In order to meet the high requirements for the strength, running depth, and pressure bearing capacity of coiled tubing in the development of ultra deep wells, ultra long horizontal wells, and high?ressure wells, world’s highest strength CT150 coiled tubing was developed and applied in oil field. The strength, plasticity, bearing capacity and bending fatigue life of domestic CT150 coiled tubing is studied by metallographic, mechanical and low cycle fatigue tests. The results show that CT150 grade coiled tubing has yield strength of 1 078 MPa, tensile strength of 1 141 MPa and hardness of less than 363HV1.0, elongation 21% Bursting pressure of Φ50.8 mm×4.0 mm CT150 grade coiled tubingis up to 196.2 MPa, the collapse pressure is up to 161.4 MPa, and the times of fatigue life is up to 248. Compared with CT110 coiled tubing of the same specification, the fatigue life has been doubled, and the bearing capacity is also greatly improved. The penetration depth can be increased by 36.4% under the same conditions. The product has been applied in a total of 28 wells in Xinjiang Oilfield, with 51 downhole operations. It can effectively reduce the occurrence of spiral self?ocking phenomenon, significantly improve the depth of long horizontal sections, and have excellent pressure performance, greatly improving the safety of operations.

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备注/Memo

备注/Memo:
收稿日期:2022-09-11
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“连续管井下电动马达钻井系统研究”(项目编号2021DJ4305)。
作者简介:李鸿斌(1984—),男,硕士,高级工程师,主要从事连续管新产品开发及管材失效分析等工作。
更新日期/Last Update: 2023-07-19