高强度橡胶保护套防磨减扭工具的研制

发布时间：2018-03-28 04:09

本文选题：橡胶保护套　切入点：金属陶瓷涂层　出处：《石油钻采工艺》2017年02期

【摘要】：针对现有防磨减扭工具摩擦副性能较差,使用寿命短的问题,研制了一种以高强度橡胶与金属复合陶瓷涂层为滑动摩擦副的钻井用防磨减扭工具。高强度橡胶常温抗拉强度39 MPa,撕裂强度129 k N/mm,磨耗0.003 cm3/1.61 km,与外表面喷涂金属陶瓷的钢轴形成滑动摩擦副,在以膨润土基浆为循环介质环境下,测得摩擦因数仅为0.068,加入2%粒径为1 mm的石英砂后,测得的摩擦因数为0.2,远低于钢-钢摩擦因数0.35~0.5。加工样机28套并在水平位移3 000 m左右大位移井中进行了现场试验,结果表明,扭矩平均降低20%,性能明显优于同类产品;28套工具出井后,滑动摩擦副仅有轻微划痕和磨损,单套工具可使用1 000 h以上,具有较好的推广应用价值。
[Abstract]:In view of the problem of poor performance and short service life of the friction pair of the existing anti-wear and torsion reducing tools, A drilling wear and torsion reducing tool with high strength rubber / metal composite ceramic coating as sliding friction pair has been developed. The tensile strength of high strength rubber at room temperature is 39 MPA, tear strength is 129kN / mm, wear is 0.003 cm3/1.61 / km, and sprayed metal with external surface. The ceramic steel shaft forms a sliding friction pair, When bentonite based slurry was used as the circulating medium, the friction coefficient was only 0.068, and the quartz sand with 2% diameter of 1 mm was added. The friction coefficient measured is 0.2, which is far lower than that of steel-steel friction coefficient 0.350.The field test results show that 28 sets of prototypes have been processed and tested in a well with a horizontal displacement of 3 000 m or so. The average torque is reduced by 20%, and the performance is obviously better than that of 28 tools of the same kind. The sliding friction pair is only slightly scratched and worn, and the single tool can be used for more than 1 000 hours, which has a good value of popularization and application.
【作者单位】：中石油冀东油田分公司;西南石油大学油气藏地质及开发工程国家重点实验室;西安石油大学石油工程学院;
【基金】：冀东油田科技攻关项目“5000米大位移井钻井技术研究”(编号:2014C-28)
【分类号】：TE921.9

【相似文献】