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:
Feb. 20, 2007
Filed:
Feb. 20, 2004
Mike A. Luke, Houston, TX (US);
Tom Fuller, Insch, GB;
Darrell Johnson, Katy, TX (US);
David Brunnert, Cypress, TX (US);
Brian Grayson, Sugar Land, TX (US);
David Pavel, Kingwood, TX (US);
R. K. Bansal, Houston, TX (US);
Mike A. Luke, Houston, TX (US);
Tom Fuller, Insch, GB;
Darrell Johnson, Katy, TX (US);
David Brunnert, Cypress, TX (US);
Brian Grayson, Sugar Land, TX (US);
David Pavel, Kingwood, TX (US);
R. K. Bansal, Houston, TX (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
Methods and apparatus for utilizing a downhole deployment valve (DDV) to isolate a pressure in a portion of a bore are disclosed. Any combination of fail safe features may be used with or incorporated into the DDV such as redundant valve members, an upward opening flapper valve or a metering flapper below a sealing valve. In one aspect, a barrier or diverter located in the bore above a valve member of the DDV permits passage through the bore when the valve member is open and actuates when the valve member is closed. Once actuated, the barrier or diverter either stops or diverts any dropped objects prior to the dropped object reaching and potentially damaging the valve member. In another aspect, the tool string tripped in above the DDV includes an acceleration actuated brake that anchors the tool string to a surrounding tubular if the tool string is dropped.