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[1]张强,练章华,林铁军,等.气体钻与泥浆钻全井段套管磨损对比研究[J].中国安全生产科学技术,2018,14(6):121-127.[doi:10.11731/j.issn.1673-193x.2018.06.019]
　ZHANG Qiang,LIAN Zhanghua,LIN Tiejun,et al.Comparative study on casing wear of whole well section by gas drilling and mud drilling[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(6):121-127.[doi:10.11731/j.issn.1673-193x.2018.06.019]
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气体钻与泥浆钻全井段套管磨损对比研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年6期
页码:
121-127
栏目:
职业安全卫生管理与技术
出版日期:
2018-06-30

文章信息/Info

Title:
Comparative study on casing wear of whole well section by gas drilling and mud drilling
文章编号:
1673-193X(2018)-06-0121-07
作者:
张强1; 练章华1; 林铁军1; 肖洲2
（1.西南石油大学 油气藏地质及开发工程国家重点实验室，四川 成都 610500；2.川庆钻探工程有限公司 钻采工程技术研究院，四川 广汉 618300）
Author(s):
ZHANG Qiang1;  LIAN Zhanghua1;  LIN Tiejun1;  XIAO Zhou2
(1. Southwest Petroleum University, State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu Sichuan 610500, China;2. Drilling & Production Technology Research Institute, Chuanqing Drilling Engineering Co., Guanghan Sichuan 618300, China)
关键词:
套管磨损; 气体钻井; 预测模型; 磨损实验; 磨损深度
Keywords:
casing wear;  gas drilling;  prediction model;  wear experiment;  wear depth
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2018.06.019
文献标志码:
A
摘要:
套管磨损会降低套管的抗挤强度和抗内压强度，造成套管柱变形、挤毁和泄漏等事故。为了对比气体钻与泥浆钻全井段套管磨损情况，建立了三维井眼中钻柱接触力计算模型；将基于能量损失的线性“磨损—效率”模型与月牙形磨损模型相结合，建立了全井段套管内壁磨损深度的预测模型；通过开展空气和泥浆环境套管磨损实验，获得了套管磨损系数；利用建立的模型和实验获得的参数进行了实例计算和分析，对比了气体钻和泥浆钻后套管的磨损深度。研究结果表明：气体钻井造成的全井段套管磨损量略比泥浆钻井大，但套管磨损严重的位置发生为狗腿度较大的井段。建立的预测模型和计算结果可为气体钻水平井套管磨损分析及套管完整性评价提供理论依据和工程参考。
Abstract:
The casing wear will reduce the collapse strength and internal pressure strength of the casing, which may lead to the deformation, collapse and leakage accidents of the casing string. In order to compare the casing wear of the whole well section by the gas drilling and mud drilling, a calculation model of contact force for the drill string in the threedimensional wellbore was established, and a prediction model of wear depth on the internal wall of casing in the whole well section was established by combining with the linear wearefficiency model and crescentshaped wear model based on the energy loss. The wear coefficients of casing were obtained through the experiments on casing wear in the air and mud environments. The case calculation and analysis were carried out by using the established model and the parameters obtained by the experiments, and the wear depths of casing after the gas drilling and mud drilling were compared. The results showed that the amount of casing wear in the whole well section by the gas drilling was slightly larger than that by the mud drilling, but the position with the serious casing wear was the well section with the higher dogleg severity. The established prediction model and the calculation results can provide the theoretical foundation and engineering reference for the analysis of casing wear and the integrity evaluation of casing in the gas drilling of horizontal well.

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备注/Memo

备注/Memo:
国家自然科学基金项目（51574198，51504207）
更新日期/Last Update: 2018-07-05