The invention discloses a driving switch control valve for filling sand control conversion tool, including sleeve, outer sleeve and an inner sleeve, a central tube, the control sleeve half wall sheathed control sleeve jacket, the inner wall of the lower end is sheathed in the sleeve, the outer sleeve and the inner sleeve are provided with radial and circular holes. The annulus between the outer and the inner sleeve is provided with a sliding piston to open and close the outer sleeve and the inner sleeve is provided in the circular hole, the lower end of the outer sleeve is connected outside the sand set, the inner sleeve is connected with the lower end in the sand, the outer sleeve and the inner sand proof sand body is arranged between the steering of the outer sleeve; the upper outer wall provided with square holes and the open claw, the coat section of outer wall provided with square holes and the closed claw, the inner sleeve is connected with the lower end of the center pipe sand. The invention does not need to add hydraulic pressure; the controllable valve can be opened and closed through the lifting and lowering of the oil pipe; a set of conversion tools can realize the control of a plurality of controllable valves, simplify the construction steps and shorten the operation time.
【技术实现步骤摘要】
驱动防砂用可开关控制阀的充填转换工具
本专利技术涉及石油开采井裸眼防砂完井工艺及装置,具体地说是驱动防砂用可开关控制阀的充填转换工具。
技术介绍
与单纯的水平井筛管完井相比,在水平井裸眼环空进行充填防砂工艺具有很大的优越性:高渗透性的砾石充填层能够长期保持油井与井筒之间畅通,提高油井供液能力,使油井长期保持高产;在筛管和裸眼环空形成挡砂屏障,有利于减缓或避免筛管堵塞,延长防砂有效期;高强度的砾石充填层可以防止井壁坍塌,保持井壁稳定。在长井段水平井施工中,由于携砂液的滤失,砾石在未充满环空之前就已提前沉降,产生砂桥堵塞,导致充填不完善,防砂效果差,制约了充填防砂技术的推广应用。为实现长井段水平井的均衡密实充填防砂,出现了分段充填技术,该工艺是将变内径滑套随完井管柱下入井中,通过投入不通直径的球逐级打开滑套,实现分段充填。该技术有以下局限性:(1)受滑套球座尺寸分级排列的影响,分段数量受到限制;(2)球座使得完井管柱内通径减小,后期下作业管柱关闭滑套困难,地层吐砂导致充填防砂失败。中国专利申请日2013年5月27日,申请号201310200100.4,专利技术名称“水 ...
【技术保护点】
驱动防砂用可开关控制阀的充填转换工具,其特征在于,包括控制套、外套、内套、中心管,所述控制套下半段外壁套接外套,控制套下端内壁套接内套,所述外套和内套均开设径向的循环孔,并且外套和内套之间的环空设置滑动活塞用以开闭外套和内套开设的循环孔,所述外套下端连接外防砂套,所述内套下端连接内防砂套,所述外防砂套和内防砂套之间设置转向体;所述外套上段外壁开设方孔并安装打开爪,所述外套下段外壁开设方孔并安装关闭爪,所述内防砂套下端连接中心管。
【技术特征摘要】
1.驱动防砂用可开关控制阀的充填转换工具,其特征在于,包括控制套、外套、内套、中心管,所述控制套下半段外壁套接外套,控制套下端内壁套接内套,所述外套和内套均开设径向的循环孔,并且外套和内套之间的环空设置滑动活塞用以开闭外套和内套开设的循环孔,所述外套下端连接外防砂套,所述内套下端连接内防砂套,所述外防砂套和内防砂套之间设置转向体;所述外套上段外壁开设方孔并安装打开爪,所述外套下段外壁开设方孔并安装关闭爪,所述内防砂套下端连接中心管。2.根据权利要求1所述的驱动防砂用可开关控制阀的充填转换工具,其特征在于,所述外套上端连接上胶筒,上胶筒套在控制套上,上胶筒上端为上胶筒座,所述上胶筒座径向开孔并安装扶正块,扶正块内壁与控制套外壁之间设置片弹簧,外套上端开设外锥面与上方的上胶筒开设的内锥面...
【专利技术属性】
技术研发人员:张全胜,张峰,刘永顺,崔德秀,李敢,郭慧,王金铸,张安德,李明,董建国,赵洪涛,裴春,
申请(专利权)人:中国石油化工股份有限公司,中国石油化工股份有限公司胜利油田分公司石油工程技术研究院,
类型:发明
国别省市:山东,37
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