E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/263 (2006.01) E21B 43/116 (2006.01)
Patent
CA 2745386
By substantially eliminating the crushed zone surrounding a perforation tunnel and expelling debris created upon activation of a shaped charge with, first and second successive explosive events, the need for surge flow associated with underbalanced perforating techniques is eliminated. The break down of the rock fabric at the tunnel tip, caused by the near- instantaneous overpressure generated within the tunnel, further creates substantially debris-free tunnels in conditions of limited or no underbalance as well as in conditions of overbalance. Image
Selon l'invention, par élimination substantielle de la zone écrasée entourant un tunnel de perforation et évacuation de débris créés lors de l'activation d'une charge creuse avec des premier et second événements explosifs successifs, le besoin d'un écoulement instantané associé à des techniques de perforation en sous-pression est éliminé. La rupture de la structure rocheuse au bout du tunnel, provoquée par la surpression presque instantanée générée à l'intérieur du tunnel, crée en outre des tunnels sensiblement exempts de débris dans des conditions de sous-pression limitée ou absente ainsi que dans des conditions de surpression.
Bell Matthew Robert George
Clark Nathan Garret
Hardesty John Thomas
Wesson David S.
Geodynamics Inc.
Ridout & Maybee Llp
LandOfFree
Method for perforating a wellbore in low underbalance systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for perforating a wellbore in low underbalance systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for perforating a wellbore in low underbalance systems will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1605331