Well gravel packing method

Details Well gravel packing method Well gravel packing method

1983-04-29

1984-09-04

Purser, Ernest R.

Wells

Processes

Graveling or filter forming

166 51, 166178, E21B 4304

Patent

active

044691785

ABSTRACT:
A gravel packing method and apparatus for oil and gas wells having high angled portions, i.e. angled a substantial degree from the vertical, wherein slow rotation of the drill pipe is maintained throughout the pumping of the gravel ladened fluid to inhibit the accummulation of the gravel along the drill pipe in the high-angled portions. Each of several different embodiments of a selective rotation and releasing tool comprises tubular members that are relatively movable by vertical movement of the drill pipe to engage or disengage keys in keyways to selectively rotate or not rotate, respectively, a threaded releasing screw for releasing the liner at the completion of the gravel pack. The tool includes members for impacting one another upon rapid lowering of the drill pipe to jar the liner.

REFERENCES:
patent: 3661209 (1972-05-01), Solum
patent: 3834471 (1974-09-01), Bottoms
patent: 4064953 (1977-12-01), Collins
patent: 4418754 (1983-12-01), Stepp

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