Well gravel packing method

Details Well gravel packing method Well gravel packing method

E - Fixed Constructions

21

B

166/9

E21B 43/02 (2006.01)

Patent

CA 1206868

ABSTRACT OF THE DISCLOSURE A gravel packing method and apparatus for oil and gas wells having high angled portions, i.e. angled a substan- tial 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 comple- tion of the gravel pack. The tool includes members for impact- ing one another upon rapid lowering of the drill pipe to jar the liner.

453659

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