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:
Aug. 15, 1989
Filed:
Mar. 23, 1988
Joseph F Donovan, Spring, TX (US);
Edward C Spatz, Houston, TX (US);
John V Salerni, Kingwood, TX (US);
Elmer R Peterson, The Woodlands, TX (US);
John B Weirich, Tomball, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A method and apparatus for effecting the completion of non-vertical, including horizontally disposed, portions of a deviated well bore traversing a production formation. To facilitate the insertion of a gravel packing tool string through the curved portion of the well bore, stabilizer elements are maintained in a radially retracted position and then operated to engage the well bore after the tool string is run-in. An anti-rotation tool may be incorporated for connecting the work string to the left hand threads conventionally provided on a conventional packer in order to permit rotation of the entire tool string to facilitate passage through the curved portion of the well bore. Two gravel packing modifications are disclosed, the one employing a single packer and a cross-over tool located at the top end of a plurality of serially connected screens. In the order modification, a plurality of gravel packing sections, including stabilizers, screens, a sleeve valve housing and a packer are serially connected together and run-in. A cross-over tool is then inserted by a separate tubular work string to be initially positioned adjacent the lowermost packer to accomplish the packing of the lowermost screens and then moved to the next packer to successively effect the gravel packing of all of the gravel packing sections.