Tubing conveyed selective fired perforating systems

Wells – Processes – Perforating – weakening – bending or separating pipe at an...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

166 55, 166 63, E21B 2902

Patent

active

052879240

ABSTRACT:
A system is provided for selectively perforating multiple zones in a well on a single trip into the well. The system includes a tubing string which carries at least a first and a second perforating gun. At least a first and a second pressure actuated firing head are associated with the first and second perforating guns, respectively. A source of actuating fluid pressure for the firing head is provided, which may be the bore of the tubing string. A first selective communication device is provided for isolating the second firing head from the source of actuating fluid pressure until after the first perforating gun has been fired, and for then communicating the second firing head with the source of actuating fluid pressure in response to firing of the first perforating gun. The first firing head provides a time delay during which the actuating fluid pressure may be bled off prior to the firing of the first perforating gun.

REFERENCES:
patent: 3717095 (1973-02-01), Vann
patent: 3830299 (1974-08-01), Thomeer
patent: 4496010 (1985-01-01), Chapman, III
patent: 4612992 (1986-09-01), Vann et al.
patent: 4619333 (1986-10-01), George
patent: 4823875 (1989-04-01), Hill
patent: 4901802 (1990-02-01), George et al.
patent: 4938286 (1990-07-01), Jennings, Jr.
patent: 4969525 (1990-11-01), George et al.
patent: 5078210 (1992-01-01), George
patent: 5103912 (1992-04-01), Flint
patent: 5115865 (1992-05-01), Carisella et al.
patent: 5161616 (1992-11-01), Colla
Exhibit A-Undated advertising brochure admitted to be prior art illustrating the Vann Systems Time Delayed Firing Head.
Exhibit B-Undated brochure admitted to be prior art illustrating a Vann Systems Differential Firing Head.
Exhibit A-Catalog pp. 22-37 from a Gearhart Company catalog.

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

Tubing conveyed selective fired perforating 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 Tubing conveyed selective fired perforating systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tubing conveyed selective fired perforating systems will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-165918

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