The utility model is composed of an upper joint, a sleeve, a sealing group, a sealing group, a diffusion ring, a connecting short joint and a lower joint. The upper joint has a locking slot and can be used as a working cylinder to hang other downhole tools. The sleeve is located at the upper joint, connecting the short joints and the lower joint, and can be slid in the axial direction; the sleeve and the upper joint and the joint are connected and connected. A sealing group is installed between the joint surfaces of the short and the lower joints; a pressure balance slot is provided at the middle of the sleeve of the sleeve, with an elastic claw at the lower end; a discharge groove is placed at the junction of the short joints; the upper part of the discharge groove is provided with a diffusion ring groove; the inner of the lower joint is designed with a locking slot fixed to the position of a fixed sleeve; upper and lower joints. The head is connected with the connecting short section by thread, and the inclined shoulder is positioned. The pressure balance groove in the sleeve avoids the damage of the sealing group caused by the large pressure difference between the oil pipe and the ring in the sliding sleeve of the switch. At the same time, the two ends of the joint are positioned on the inclined shoulder to improve the tightness of the thread connection.
【技术实现步骤摘要】
一种生产滑套
本技术涉及油气田生产井中的液体流动控制工具,特别是关于一种生产滑套工具。
技术介绍
目前为了实现对不同油层的生产及测试,油管试压和循环化学药剂防腐等,需应用生产滑套提供油管和环空之间的液体流通通道。当油管与环空间压力差较大或套管和连接短节上流通口尺寸较小时,液体的高速流动易对流通口形成冲蚀,致使流通口失去正确的形状,最终导致套筒和连接短节的报废和影响密封性能,同时较小的流通口将会增大液体的流通阻力,降低液体的流量。此外,目前的生产滑套上接头、下接头与连接短节的定位多采用方形台肩,限制了螺纹连接的扭转力矩的提高,易使螺纹连接产生松动。
技术实现思路
本技术为解决公知技术中存在的技术问题而提供一种生产滑套工具,该工具可有效降低密封件的损坏,提高液体在油管和环空间的流量,同时又可以提高螺纹连接的紧密性。本技术为解决公知技术中存在的技术问题所采取的技术方案是:一种生产滑套,包括上接头、连接短节、下接头;所述连接短节的两端分别分别通过螺纹连接上接头和下接头,所述连接短节两端分别通过其上的斜台肩与上接头和下接头进行定位;所述上接头、连接短节和下接头内部设有可轴向滑动的套筒,所述套筒下端通过弹性爪与所述下接头的锁定机构连接。所述斜台肩的倾斜度为55°~65°。所述套筒中部周向均布有流通口和平衡槽。所述连接短节流通口内部设有梯形截面泄流凹槽,泄流凹槽上部设有矩形扩散环槽,扩散环槽内安装有扩散环。所述上接头内部设有锁定槽。所述锁定机构由三个锁定槽组成。所述上接头与连接短节的连接面之间设有密封组。所述下接头与连接短节的连接面之间设有密封组。生产滑套主要由上接头、套筒 ...
【技术保护点】
1.一种生产滑套,包括上接头、连接短节、下接头;所述连接短节的两端分别分别通过螺纹连接上接头和下接头,其特征在于:所述连接短节两端分别通过其上的斜台肩与上接头和下接头进行定位;所述上接头、连接短节和下接头内部设有可轴向滑动的套筒,所述套筒下端通过弹性爪与所述下接头的锁定机构连接。
【技术特征摘要】
1.一种生产滑套,包括上接头、连接短节、下接头;所述连接短节的两端分别分别通过螺纹连接上接头和下接头,其特征在于:所述连接短节两端分别通过其上的斜台肩与上接头和下接头进行定位;所述上接头、连接短节和下接头内部设有可轴向滑动的套筒,所述套筒下端通过弹性爪与所述下接头的锁定机构连接。2.根据权利要求1所述的一种生产滑套,其特征在于:所述斜台肩的倾斜度为55°~65°。3.根据权利要求1所述的一种生产滑套,其特征在于:所述套筒中部周向均布有流通口和平衡槽。4.根据权利要求1所述的...
【专利技术属性】
技术研发人员:陈胜宏,李宝龙,孙晓锋,孔学云,齐海涛,张辉,柴龙顺,
申请(专利权)人:中国海洋石油总公司,中海油能源发展股份有限公司,
类型:新型
国别省市:北京,11
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。