Downhole activation circuit valving

Wells – Processes – Placing or shifting well part

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

166317, E21B 3312

Patent

active

059795611

ABSTRACT:
A downhole valve for use within a string of tools in a well for controlling a hydraulic activation circuit. The valve has a housing with an inlet and an outlet, defining a portion of the circuit extending between the inlet and the outlet. A moveable piston within the housing in a first position provides communication between uphole and downhole parts of the circuit, and in a second position isolates the uphole and downhole parts of the circuit. A frangible member is constructed to support, in an intact condition, the piston in one of these two positions against a biasing force, and in a shattered condition enables the piston to move in response to the biasing force to the other position. A detonating member extending through the frangible member propagates a detonation wave to shatter the frangible member when desired, closing the valve. The valve is capable of closing very rapidly, and is particularly useful for isolating an uphole part of a hydraulic activation circuit when used with detonatable tools that can damage hydraulic control lines upon detonation, such as perforating guns. In other embodiments the valve is used to enable hydraulic activation of a tool when opened by a detonation. Methods of altering a hydraulic activation circuit within a string of tools in a well are also disclosed.

REFERENCES:
patent: 2674313 (1954-04-01), Chambers
patent: 3208355 (1965-09-01), Baker et al.
patent: 3209937 (1965-10-01), Hirst et al.
patent: 3589442 (1971-06-01), Kilgore
patent: 4515217 (1985-05-01), Stout
patent: 4557331 (1985-12-01), Stout
patent: 4597439 (1986-07-01), Meek
patent: 4603741 (1986-08-01), Edgmon
patent: 4616701 (1986-10-01), Stout et al.
patent: 4817718 (1989-04-01), Nelson et al.
patent: 5287924 (1994-02-01), Burleson et al.
patent: 5293940 (1994-03-01), Hromas et al.
patent: 5318126 (1994-06-01), Edwards et al.
patent: 5355957 (1994-10-01), Burleson et al.
patent: 5366013 (1994-11-01), Edwards et al.
patent: 5429192 (1995-07-01), Huber et al.
patent: 5462117 (1995-10-01), Green et al.
patent: 5509481 (1996-04-01), Huber et al.
patent: 5509482 (1996-04-01), Dillon et al.
Snider, Philip M., "Selectively fired, tubing-conveyed perforating guns save rig time", Oil & Gas Journal Jul. 19, 1993.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Downhole activation circuit valving does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Downhole activation circuit valving, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole activation circuit valving will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1444212

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.