Method and apparatus for forming and using a bore hole

Details Method and apparatus for forming and using a bore hole Method and apparatus for forming and using a bore hole

E - Fixed Constructions

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E21B 17/18 (2006.01) E21B 7/04 (2006.01) E21B 7/06 (2006.01) E21B 7/18 (2006.01) E21B 17/20 (2006.01) E21B 19/22 (2006.01) E21B 21/00 (2006.01) E21B 21/12 (2006.01) E21B 23/08 (2006.01) E21B 36/02 (2006.01) E21B 43/04 (2006.01)

Patent

CA 1182104

Abstract of the Disclosure A system for the formation and use of a bore hole, partic- ularly for the recovery of oil from an oil-bearing under- ground formation. An eversible elongate permeable tube, preferably formed of woven cloth, including outer and inner walls, connected at a rollover area, is urged into the formation by a driving fluid. Drilling fluid is pumped through a central passageway in the tube and carries a central pipe forward. The drilling fluid assists break- up of the formation to form a cuttings slurry which passes back along the outside of the eversible tube. Means is provided for turning the tube, as from the vertical to the horizontal, by use of a turning segment in the eversible tube. Such pipe preferably includes a flexible helical segment capable of turning and of serving as the ultimate support casing. Also, gravel packing techniques.

381836

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