两端锥形的抽油杆抗磨接箍制造技术

两端锥形的抽油杆抗磨接箍，应用于油田采油井，连接抽油杆。主要由圆柱体形的本体组成，本体有中心孔，中心孔内有与抽油杆连接的内螺纹，在本体的外壁中部有两个对称的搭扳手的平面，本体的外壁两端分别有圆锥体，圆锥体的斜度为1～5°，圆锥体的长度为5～20mm；在圆锥体外端分别有半径为1～3mm的圆弧面。效果是：能连接抽油杆，下入油管内后随抽油杆往复运动，降低接箍外壁与油管内壁之间的摩擦阻力；降低接箍对油管内壁的刮削磨损；既能保护抽油杆接箍，又能保护油管内壁，减缓管杆之间的磨损，延长管杆的使用寿命，延长检泵周期。（*该技术在2021年保护过期，可自由使用*）

Anti friction coupling for sucker rod with tapered ends

The utility model relates to an anti friction coupling for sucker rods with tapered ends, which is used for oil production wells and is connected with an oil pumping rod. Is mainly composed of a cylindrical body, the body with a center hole, the center hole and inner screw rod pumping oil, there are two symmetrical wrenching plane in the middle of the outer wall of the body, the outer wall of the both ends respectively with a cone body, a cone angle of 1 degrees to 5 degrees, the cone length is 5 ~ 20mm; the cone outer end respectively for the arc radius of 1 ~ 3mm surface. The effect is to connect the sucker rod, into the tubing with the sucker rod reciprocating motion, then reduce the frictional resistance between the outer wall and the inner wall of the pipe hoop; reduce the coupling of the tubing wall scraping wear; can protect the sucker rod coupling, and can protect the inner pipe, abrasion between tube and rod to extend the service life of tube, rod, prolongs the pump inspection period.

【技术实现步骤摘要】

【技术保护点】
１．一种两端锥形的抽油杆抗磨接箍，主要由圆柱体形的本体（１）组成，本体（１）有中心孔，中心孔内有与抽油杆连接的内螺纹（２），在本体（１）的外壁中部有两个对称的搭扳手的平面（５），其特征在于：本体（１）的外壁两端分别有圆锥体（４），圆锥体（４）的斜度为１～５°，圆锥体（４）的长度为５～２０ｍｍ；在圆锥体（４）外端分别有半径为１～３ｍｍ的圆弧面。

【技术特征摘要】

【专利技术属性】
技术研发人员：贾鹏，赵令学，丁明华，
申请(专利权)人：中国石油天然气股份有限公司，
类型：实用新型
国别省市：11