Wells – Processes – Graveling or filter forming
Patent
1989-05-25
1990-04-10
Novosad, Stephen J.
Wells
Processes
Graveling or filter forming
166 50, 166 51, 166126, 166380, 166381, 166387, E21B 2304, E21B 2306, E21B 4304, E21B 4308
Patent
active
049151720
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 other 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.
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Donovan Joseph F.
Peterson Elmer R.
Salerni John V.
Spatz Edward C.
Weirich John B.
Baker Hughes Incorporated
Novosad Stephen J.
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