The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1998
Filed:
Feb. 05, 1997
Michael L Connell, Duncan, OK (US);
James Craig Tucker, Duncan, OK (US);
Pat Murphy White, Carrollton, TX (US);
Paul L Browne, Dundee, GB;
James Robert Longbottom, Whitesboro, TX (US);
Michael Dennis Bullock, The Woodlands, TX (US);
Karluf Hagen, Randaberg, NO;
Halliburton Company, Duncan, OK (US);
Abstract
The apparatus and method for injecting coiled tubing downhole includes a connector member disposed on the end of the coiled tubing and supporting a downhole tool. A packer member is releasably connected to the connector member. The packer member includes a pack-off element and slips for releasably engaging the outer pipe string through which the coiled tubing is being injected. Seals are provided on the packer member for engaging the outer circumferential surface of the coiled tubing. A fluid passageway extends through the connector member for communicating the packer member with the coiled tubing. Fluid pressure is applied through the flow bore of the coiled tubing. The fluid pressure is applied through the fluid passageway to actuate an actuator member in the packer member to set the pack-off element and slips. Thus, upon actuating the packer member, the annulus formed by the coiled tubing and outer pipe string is closed. Fluid is then applied from the surface into the annulus to support and stiffen the coiled tubing as the injector applies additional force to further inject the coiled tubing downhole. Upon the setting of the packer member, the packer member is also released from the connector member so that the connector member and downhole tool disposed on the end of the coiled tubing may be further injected downhole. The connector member includes a dual check valve in the fluid passageway which allows fluid passage to actuate the packer member and closes the fluid passage after the connector member is disconnected from the packer member. The connector member may also include a valve member which allows circulation down the flow bore of the coiled tubing. The packer member includes a valve for the passage of well fluids between the packer member and coiled tubing.