Methods and apparatus for drilling holes laterally from a well

Details Methods and apparatus for drilling holes laterally from a well Methods and apparatus for drilling holes laterally from a well

1997-08-29

1999-12-21

Tsay, Frank S.

Boring or penetrating the earth

Tool shaft advanced relative to guide insertable in...

175 61, 1661175, E21B 708

Patent

active

060036214

ABSTRACT:
An apparatus for enhancing production from a well by lowering a tubular conductor into the well to a position in which the conductor extends downwardly from near the surface of the earth to a zone beneath the surface, and a drilling unit is advanced past a whipstock held by the tubular conductor at the predetermined zone, thereby deflecting the drilling unit in a lateral direction through an opening in a side wall of the conductor into the earth formation about the conductor. The whipstock may initially be attached to the drilling unit by a shear connection. An anchor may lock the lower end of the tubular conductor in place in the well, with a rotatively adjustable connection enabling rotation of the tubular conductor to different rotary positions for producing holes in the formation in different directions. A second whipstock may be lowerable into the tubular conductor to direct liners from within the conductor into the holes formed in the formation.

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Advertising sheet of Baker Oil Tools labeled "Permanent Packer Systems".
Booklet of A-Z/Grant International entitled "Casing Sidetrack Systems".
Advertising sheet of A-Z/Grant International entitled"Sidetrack Systems A-Z Pack-Stock".
Article entitled "Slimhole Norizontal Re-Entries Provide Alternative To New Drills" from the Nov. 1992 issue of Petroleum Engineer International.
Advertising sheet entitled "SS-WS Whipstock Packer With Anchor".
Article "SPE 26714 Slim-Hole and Coiled-Tubing Window Cutting Systems".
Advertising sheet of Slimdril International, Inc. entitled "Advanced Slimdril Positive Displacement Drilling Motors".
Advertising sheet of Eastman Christensen entitled "Special Products & Services".
Advertising sheet of Eastman Christensen entitled "Drilling Systems & Services".
Advertising sheet entitled "Chisel-Type Deflection Wedge and Drill-Off Tool".
Document entitled "A-Z/Grant International Company--Operation Procedure For The Pack-Stock And Anchor-Stock", pp. 1 thru 29.

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