The utility model relates to the technical field of expansion pipes, in particular to a liquid cylinder device for staged construction of expansion pipes. The upper joint of the device is connected with a lock block, the upper liquid cylinder is set on the outer side of the lock block and sealed between the lock block, and the upper end of the upper liquid cylinder is sealed between the upper end and the upper joint. The upper joint is open with a upper through hole of the hydraulic cavity connected with the upper liquid cylinder and the lock block, and a spring is installed between the upper end face of the upper liquid cylinder and the outer wall of the upper joint. The inner end of the block is embedded in the groove of the upper outer wall of the joint, and the outer end of the slider extends into the through hole of the side wall of the lower locking block and is limited by the upper liquid cylinder. The utility model can control the multiple expansion of the expansion cone, the subsection expansion construction pressure is low, the construction risk is reduced, the construction safety of the long well section expansion pipe is ensured. At the same time, the expansion pipe expansion way from the upper and down can be adopted to get out the wellhead at any time, eliminate the hidden danger of safety, safety and reliability, and the length of tube expansion. Unrestricted, simple structure, easy to process, simple and convenient operation.
【技术实现步骤摘要】
一种膨胀管分段施工液缸装置
:本技术涉及膨胀管
,特别涉及一种膨胀管分段施工液缸装置。
技术介绍
:膨胀管是一种具有良好塑性的金属钢管,通过液压或机械力迫使膨胀锥在管内运动,将膨胀管胀大,贴合在外层套管或者裸眼井壁上,以达到修补破损套管或者封堵复杂地层的目的。目前国内膨胀管补贴技术、复杂地层封堵技术日趋成熟。但是在长井段膨胀管施工中,由于通常是通过液力推动膨胀锥从下向上胀管,施工井段过长,管内液柱长,会导致施工压力过高。同时如果膨胀遇阻,工具和上部钻杆无法起出井口,造成事故。
技术实现思路
:本技术要解决的技术问题是提供一种膨胀管分段施工液缸装置,该装置实现了能够控制膨胀锥多次运动进行分段膨胀,分段膨胀施工压力低,降低施工风险,保证长井段膨胀管施工的安全性,同时采取从上向下膨胀的胀管方式,可以随时起出井口,消除安全隐患,安全可靠,胀管长度不受限制,结构简单,易于加工,操作简捷方便。克服了现有长井段膨胀管施工从下向上胀管,施工井段过长,导致施工压力过高,同时如果膨胀遇阻,工具和上部钻杆无法起出井口,易造成事故的不足。本技术所采取的技术方案是:一种膨胀管分段施工液缸装置,包括上接头;上接头上连接有上锁块,上液缸套装在上锁块外侧并与上锁块之间密封,上液缸上端与上接头之间密封,上接头上开有连通上液缸与上锁块之间液压腔的上通孔,上液缸上端面与上接头外壁台阶面之间安装有弹簧,滑块内端嵌入上接头外壁凹槽内,滑块外端伸入下锁块侧壁通孔中并被上液缸限位,下锁块外侧连接下液缸,上接头下端连接中心杆,中心杆上开有连通中心杆与下液缸之间液压腔的下通孔,下液缸下端连接膨胀锥,膨胀锥下 ...
【技术保护点】
1.一种膨胀管分段施工液缸装置,包括上接头(1);其特征在于:上接头(1)上连接有上锁块(5),上液缸(4)套装在上锁块(5)外侧并与上锁块(5)之间密封,上液缸(4)上端与上接头(1)之间密封,上接头(1)上开有连通上液缸(4)与上锁块(5)之间液压腔的上通孔(12),上液缸(4)上端面与上接头(1)外壁台阶面之间安装有弹簧(2),滑块(6)内端嵌入上接头(1)外壁凹槽内,滑块(6)外端伸入下锁块(7)侧壁通孔中并被上液缸(4)限位,下锁块(7)外侧连接下液缸(8),上接头(1)下端连接中心杆(9),中心杆(9)上开有连通中心杆(9)与下液缸(8)之间液压腔的下通孔(13),下液缸(8)下端连接膨胀锥(10),膨胀锥(10)下端外侧设有膨胀管(11)。
【技术特征摘要】
1.一种膨胀管分段施工液缸装置,包括上接头(1);其特征在于:上接头(1)上连接有上锁块(5),上液缸(4)套装在上锁块(5)外侧并与上锁块(5)之间密封,上液缸(4)上端与上接头(1)之间密封,上接头(1)上开有连通上液缸(4)与上锁块(5)之间液压腔的上通孔(12),上液缸(4)上端面与上接头(1)外壁台阶面之间安装有弹簧(2),滑块(6)内端嵌入上接头(1)外壁凹槽内,滑块(6)外端伸入下锁块(7)侧壁通孔中并被上液缸(4)限位,下锁块(7)外侧连接下液缸(8)...
【专利技术属性】
技术研发人员:霍爱莉,王春杰,李鹏,陈敏华,丁文正,朱太辉,钟勇,王磊,高清春,崔志强,杨行,夏方杰,陈思路,黄涛,刘亚峰,赵冰冰,李鹏娜,罗欢,李思曈,王诗灏,周灵佐,
申请(专利权)人:中国石油集团长城钻探工程有限公司,
类型:新型
国别省市:辽宁,21
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