Special packer for multilevel well

多级井专用封隔器

  • Inventors: QU YONGGANG
  • Assignees: 曲永刚
  • Publication Date: September 28, 2011
  • Publication Number: CN-201991482-U

Abstract

A special packer for a multilevel well mainly resolves the problem that an existing packer is poor in corrosion resistance and large in lifting unpacking tension. The special packer is characterized in that a fixing piston (5) is fixed on an unpacking pin (10) in an upper working barrel (4) at the lower end of an upper joint (9), the inner side of the fixing piston (5) is connected with a center tube (7) in a threaded manner, the outside of the center tube (7) is connected with a clamp spring sleeve (2) in a threaded manner, the lower end of an outer center tube (6) is placed in a step on the inner side of the upper end of the clamp spring sleeve (2), a steel ball (11) is placed in a transverse through hole on an upper end wall of the clamp spring sleeve (2), the clamp spring sleeve (2) is connected with a clamp spring hanger (1) via the steel ball (11), the lower end of the clamp spring hanger (1) is connected with a pushing sleeve (12) via a pin, a lock block (13) between the pushing sleeve (12) and the clamp spring hanger (1) is connected with a lower working barrel (3) in a threaded manner, and electroplating layers are arranged outside all components. The special packer for a multilevel well has the advantages of fine corrosion resistance and small lifting unpacking tension.
一种多级井专用封隔器。主要解决现有封封隔器耐腐蚀差,上提解封拉力大的问题。其特征在于:上接头(9)下端上工作筒(4)内通过解封销钉(10)固定有固定活塞(5),固定活塞(5)内侧通过螺纹与中心管(7)相连接;中心管(7)外通过螺纹连接有卡簧套(2),外中心管(6)下端置于卡簧套(2)上端内侧阶台内,卡簧套(2)上端壁上横向通孔内置有钢球(11),卡簧套(2)通过钢球(11)连接有卡簧挂(1),卡簧挂(1)下端通过销钉连接有推套(12),推套(12)与卡簧挂(1)之间锁块(13)通过螺纹与下工作筒(3)相连接,全部部件外均有电镀层。该多级井专用封隔器具有耐腐蚀好,上提解封拉力小的特点。

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle