CN101158276B - 防顶卡瓦锚定推进机构 - Google Patents

防顶卡瓦锚定推进机构 Download PDF

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Publication number
CN101158276B
CN101158276B CN2007101134361A CN200710113436A CN101158276B CN 101158276 B CN101158276 B CN 101158276B CN 2007101134361 A CN2007101134361 A CN 2007101134361A CN 200710113436 A CN200710113436 A CN 200710113436A CN 101158276 B CN101158276 B CN 101158276B
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tile
push rod
coupling
top connection
lower contact
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CN101158276A (zh
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杨国峰
卢继洪
王红芹
许海岭
刘庆
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Jiangsu Rutong Petro-Machinery Co., Ltd.
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白霞
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Abstract

一种防顶卡瓦锚定推进机构，由上接头、联接套、轴承、下接头、推动杆组成，推动杆外螺纹与上接头下部内螺纹旋合，联接套上部悬挂在上接头外，联接套下部与下接头联接。封隔器座封后，地面旋转油管，使上接头旋转，由于推动杆与下接头套合部位的截面相似，也为八边形，能传递扭矩，因此，上接头旋转时，推动杆不旋转，在其两者螺纹作用下，推动杆向下推动防顶卡瓦动作，使防顶卡瓦锚定在套管上，并分开成两体，上体随油管和本发明被提出地面，下体在井内锚定在套管上，固定封隔器的座封力。防顶卡瓦能用机械方法进行锚定，锚定方式简单，节约设备费用，减少作业时间，增加经济效益。

Description

防顶卡瓦锚定推进机构
一、技术领域
本发明是油田采油井下工具，特别是一种防顶卡瓦锚定推进机构。
二、背景技术
防顶卡瓦是将其下部封隔器座封所需要的轴向力固定在套管上的一种井下工具，目前的防顶卡瓦的推进机构是液压的，封隔器座封后，投入钢球，向油管内注入高压液体，顶卡瓦的液压推进机构使防顶卡瓦的卡瓦张开并卡牢在套管上，将封隔器座封时的轴向力固定在套管上，然后上提油管，防顶卡瓦脱开成两体，将上体以上的油管提出，在下体作用下，封隔器始终保持座封状态。现有的防顶卡瓦都是液压式锚定，靠向油管内注入高压液体，需要增压设备，费用较高，施工时间长，影响作业进度。
三、发明内容
本发明的目的是设计一种防顶卡瓦锚定推进机构，使其防顶卡瓦能用机械方法进行锚定，节约设备费用，减少作业时间。
本发明的目的是这样实现的：由上接头、联接套、下接头、推动杆组成，推动杆外螺纹与上接头下部内螺纹旋合，联接套上部悬挂在上接头外，联接套下部与下接头联接。
推动杆与上接头相旋合螺纹旋向与上接头上部螺纹旋向相反。
轴承处于上接头、下接头之间。
推动杆与下接头套合部位的截面相似。
本发明的有益效果是：防顶卡瓦能用机械方法进行锚定，锚定方式简单，节约设备费用，减少作业时间，增加经济效益。
四、附图说明
图1是本发明的装配图。
图2是本发明图1中从A-A处剖开后的截面图。
五、具体实施方式
下面结合附图对本发明的实施例进行说明。
由上接头1、联接套2、轴承3、下接头4、推动杆5组成，推动杆5外螺纹与上接头1下部内螺纹旋合，相旋合的螺纹旋向与上接头1上部螺纹旋向相反，为左旋螺纹，推动杆5在下接头4内，联接套2上部悬挂在上接头1外，联接套2下部与下接头4联接。轴承3处于上接头1、下接头4之间。下接头4下内部不是圆形孔，为八边形，推动杆5与下接头4套合部位的截面相似，也为八边形。
联接套也可以上部与上接头1联接，下部悬挂在下接头4上。
使用时，下接头4下部与防顶卡瓦联接，封隔器座封后，地面旋转油管，使上接头1旋转，虽然上接头1、下接头4之间有较大的轴向力(座封存力)，但在轴承3的作用下，上接头1、下接头4也能相对旋转，由于推动杆5与下接头4套合部位的截面相似，也为八边形，能传递扭矩，因此，上接头1旋转时，推动杆5不旋转，在其两者螺纹作用下，推动杆5向下推动防顶卡瓦动作，使防顶卡瓦锚定在套管上，并分开成两体，上体随油管和本发明被提出地面，下体在井内锚定在套管上，固定封隔器的座封力。

Claims (1)

1.一种防顶卡瓦锚定推进机构，其特征是：由上接头(1)、联接套(2)、下接头(4)、推动杆(5)组成，推动杆(5)外螺纹与上接头(1)下部内螺纹旋合，联接套(2)上部悬挂在上接头(1)外，联接套(2)下部与下接头(4)联接，推动杆(5)与上接头(1)相旋合螺纹旋向与上接头(1)上部螺纹旋向相反，推动杆(5)与下接头(4)套合部位的截面相似；上接头(1)、下接头(4)之间安装轴承(3)。
CN2007101134361A 2007-10-16 2007-10-16 防顶卡瓦锚定推进机构 Expired - Fee Related CN101158276B (zh)

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CN2007101134361A CN101158276B (zh) 2007-10-16 2007-10-16 防顶卡瓦锚定推进机构

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CN2007101134361A CN101158276B (zh) 2007-10-16 2007-10-16 防顶卡瓦锚定推进机构

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CN101158276B true CN101158276B (zh) 2011-02-16

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101368474B (zh) * 2008-10-09 2011-02-16 白霞 机械式可捞型防顶卡瓦
CN114198040B (zh) * 2021-12-21 2023-08-04 北京佰文恒新能源服务有限公司 可回收式套管内锚定机构

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