基于溶胀老化实验的螺杆钻具橡胶衬套性能

doi:10.7623/syxb202410008

石油学报 ›› 2024, Vol. 45 ›› Issue (10): 1538-1551.DOI: 10.7623/syxb202410008

• 石油工程 • 上一篇

基于溶胀老化实验的螺杆钻具橡胶衬套性能

王国荣^1,2, 徐简繁^1,2, 米凯夫³, 胡刚^1,2, 文新铭^1,2, 刘业鹏^1,2

1. 西南石油大学机电工程学院四川成都 610500;
2. 西南石油大学能源装备研究院四川成都 610500;
3. 北京石油机械有限公司北京 102200

收稿日期:2023-07-19 修回日期:2024-08-09 发布日期:2024-11-02
通讯作者: 胡刚,男,1987年10月生,2018年获西南石油大学机械工程专业博士学位,现为西南石油大学机电工程学院副教授、硕士生导师,主要从事橡胶密封机理、智能完井工具等研究。Email:swpu_hugang@163.com
作者简介:王国荣,男,1977年9月生,2004年获西南石油学院机械设计及理论专业博士学位,现为西南石油大学机电工程学院教授、博士生导师,主要从事钻柱/隔水管管柱动力学、摩擦学理论及应用、钻头与井下工具、石油天然气装备现代化设计理论及方法研究。Email:swpi2002@163.com
基金资助:
四川省科技厅自然科学基金创新研究群体项目(2023NSFSC1980)资助。

Performance of rubber stator bushing in screw drilling tools based on swelling and aging experiments

Wang Guorong^1,2, Xu Jianfan^1,2, Mi Kaifu³, Hu Gang^1,2, Wen Xinming^1,2, Liu Yepeng^1,2

1. School of Mechatronic Engineering, Southwest Petroleum University, Sichuan Chengdu 610500, China;
2. Energy Equipment Research Institute, Southwest Petroleum University, Sichuan Chengdu 610500, China;
3. Beijing Petroleum Machinery Co., Ltd., Beijing 102200, China

Received:2023-07-19 Revised:2024-08-09 Published:2024-11-02

摘要/Abstract

摘要： 随着油气资源勘探技术的不断发展,中国油气资源逐步从浅层油气井开发迈向到深层、超深层油气井开发的阶段,螺杆钻具橡胶衬套井下高温热老化和油基钻井液溶胀问题显著,导致螺杆钻具输出性能衰减,严重影响钻进效率。因此,亟需揭示高温条件下溶胀作用对橡胶衬套性能的影响。通过开展橡胶材料高温溶胀老化实验和材料性能实验,优选出了超弹本构模型为Yeoh模型,使用不同溶胀时长的本构参数和溶胀当量温度建立有限元模型,分析了不同溶胀时长对橡胶衬套内腔变形、力学性能、密封性能、过流面积和滞后生热的影响。研究结果表明,随着溶胀时长的增加:① 内腔变形量先逐渐升高,后趋于平缓;② Von Mises应力和接触应力逐渐增大;③ 过流面积逐渐减小,并趋于平缓,在溶胀饱和状态时,过流面积降低了12.2 %;④热滞后最高温升逐渐增大。

关键词: 橡胶衬套, 溶胀老化实验, Yeoh模型, 温度当量法, 有限元分析

Abstract: With the continuous advancement of oil and gas exploration technology, China’s oil and gas resources development has entered the stage of gradually shifting from shallow wells to deep and ultra-deep wells. This transition has brought about the forefront significant issues regarding rubber stator bushing in screw drilling tools, such as high-temperature thermal aging, and swelling in oil-based drilling fluids. These issues lead to the performance deterioration of drilling tools, thus severely affecting drilling efficiency. Therefore, it is urgent to understand the impact of swelling on the performance of rubber stator bushing at high temperatures. Through high-temperature swelling and aging experiments on rubber materials and subsequent performance testing, Yeoh model was selected as the hyperelastic constitutive model. Finite element models were established using constitutive parameters and swelling equivalent temperatures for different swelling durations. The effects of swelling duration on the inner cavity deformation of the rubber stator bushing mechanical properties, sealing performance, flow area, and hysteretic heating were analyzed. The research results show that with the increasing of swelling duration, the inner cavity deformation is initially increased and then begins to level off; the Von Mises stress and contact stress gradually increase; the flow area gradually decreases and then tends to be stabilized, which is reduced by 12.2 % in case of swelling saturation; the maximum temperature rise due to hysteresis heating gradually increases. This study provides a guidance for the design and application of rubber stator bushing in screw drilling tools under harsh conditions of high-temperature and high-pressure drilling fluids.

Key words: rubber stator bushing, swelling and aging experiment, Yeoh Model, temperature equivalence method, finite element analysis

中图分类号:

TE921

王国荣, 徐简繁, 米凯夫, 胡刚, 文新铭, 刘业鹏. 基于溶胀老化实验的螺杆钻具橡胶衬套性能[J]. 石油学报, 2024, 45(10): 1538-1551.

Wang Guorong, Xu Jianfan, Mi Kaifu, Hu Gang, Wen Xinming, Liu Yepeng. Performance of rubber stator bushing in screw drilling tools based on swelling and aging experiments[J]. Acta Petrolei Sinica, 2024, 45(10): 1538-1551.

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基于溶胀老化实验的螺杆钻具橡胶衬套性能

Performance of rubber stator bushing in screw drilling tools based on swelling and aging experiments

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