Boring or penetrating the earth – Boring with explosion in inaccessible hole – With position orienting or indicating
Patent
1988-06-06
1989-05-16
Neuder, William P.
Boring or penetrating the earth
Boring with explosion in inaccessible hole
With position orienting or indicating
166298, E21B 43118
Patent
active
048301205
ABSTRACT:
Improved method and apparatus are provided for perforating casing located in a deviated portion of a subterranean well. The direction toward which the explosive charges in the downhole perforating gun are facing upon firing of the gun is accurately controlled by a firing head operatively responsive to a first initiating signal activated from the surface and a second signal automatically generated when the gun is rotationally at a predetermined angular position relative to a vertical plane passing through the central axis of the perforating gun. A rotating device within the gun firing head enables the gun to be rotated for generating the second signal when the gun is positioned below a set packer. The technique of the present invention is reliable yet relatively inexpensive, and minimizes undesirable gravitation of formation sands with formation fluids into the casing.
REFERENCES:
patent: 2414997 (1947-01-01), Atkins
patent: 4523649 (1985-06-01), Stout
patent: 4637478 (1987-01-01), George
Baker Hughes Incorporated
Neuder William P.
LandOfFree
Methods and apparatus for perforating a deviated casing in a sub does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for perforating a deviated casing in a sub, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for perforating a deviated casing in a sub will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2315578