公开(公告)号：WO2015099770A1

公开(公告)日：2015-07-02

申请号：PCT/US2013/078011

申请日：2013-12-27

Applicant: HALLIBURTON ENERGY SERVICES, INC.

Inventor： COLES, Randolph S. ,  KOPECKY, Ed F. ,  MAPPUS, Christian S. ,  MONTIVERDI, Jonathan P. ,  OSTERMANN, Neil A. ,  SIDIK, Budi P.

IPC: E21B19/02 ,  E21B19/06 ,  E21B19/12

CPC classification number: E21B23/01 ,  E21B43/116 ,  E21B47/09 ,  G01V11/005

Abstract: A braking apparatus for a tool string positionable in a wellbore and a method of braking a tool string in a wellbore is disclosed. The braking apparatus includes: a tubular housing having at least one radial arm-bay opening; an actuating mechanism including: a wedge member mounted in an internal cavity of the housing; an axial guide rod coupled at one end to the wedge member; and a push-pull device. The push pull device includes: a biasing member casing through which the guide rod extends to contact the wedge member, a biasing member; and at least one braking arm pivotably mounted to a lower portion of the biasing member casing, wherein when the biasing member casing of the push-pull device in in a lowered position, the braking arm bears on a sloped surface of the wedge member to project the braking arm into contact with a wellbore wall.

Abstract translation: 公开了一种用于在井眼中定位的工具串的制动装置和在井筒中制动工具串的方法。 该制动装置包括：具有至少一个径向臂架开口的管状壳体; 致动机构包括：安装在所述壳体的内腔中的楔形件; 轴向导杆，其一端连接到所述楔构件; 和推挽装置。 推拉装置包括：偏置构件外壳，导向杆延伸以抵靠楔形构件，偏置构件; 以及至少一个可枢转地安装到所述偏置构件壳体的下部的制动臂，其中当所述推拉装置的偏压构件处于降低位置时，所述制动臂承载在所述楔构件的倾斜表面上以突出 制动臂与井筒壁接触。