Boring or penetrating the earth – Boring with explosion in inaccessible hole – With wall engaging packer or anchor
Patent
1985-07-05
1985-11-26
Novosad, Stephen J.
Boring or penetrating the earth
Boring with explosion in inaccessible hole
With wall engaging packer or anchor
175 454, 175 456, 166 551, 166297, E21B 4311
Patent
active
045549818
ABSTRACT:
A tubing pressurized firing apparatus is shown for use with a tubing conveyed perforating gun of the type used to perforate a cased well bore. The firing apparatus has a tubular body with an upper end for connection in the well tubing string and with a lower end for connection to a well perforating gun. An inner mandrel is slidably mounted within the tubular body and has a ball seat formed in the interior bore thereof for receiving a ball dropped through the well tubing string. The ball and ball seat together form a pressure tight seal whereby tubing pressure in the well tubing string acts on the inner mandrel to slide the mandrel downwardly within the tubular body. A cocking mechanism located below the inner mandrel within the body includes a lockout member which is initially positioned between a detonating pin and a percussion detonator. The cocking mechanism is actuated by downward sliding movement of the inner mandrel to move the lockout member from between the detonating pin and percussion detonator whereby a subsequent release of tubing pressure and upward sliding movement of the inner mandrel exposes the detonating pin to the percussion detonator to actuate the detonator and fire the perforating gun.
REFERENCES:
patent: Re30829 (1981-12-01), Trott
patent: 2866508 (1958-12-01), Church
patent: 2876701 (1959-03-01), Long
patent: 2876843 (1959-03-01), Huber
patent: 3148894 (1964-09-01), Schwab
patent: 3189094 (1965-06-01), Hyde
patent: 3706344 (1972-12-01), Vann
patent: 3800705 (1974-04-01), Tamplen
patent: 3912013 (1975-10-01), Vann
patent: 4066282 (1978-01-01), Vann
patent: 4322384 (1983-02-01), Kinney
Dang Hoang C.
Felsman Robert A.
Gunter Jr. Charles D.
Hughes Tool Company
Novosad Stephen J.
LandOfFree
Tubing pressurized firing apparatus for a tubing conveyed perfor 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 pressurized firing apparatus for a tubing conveyed perfor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tubing pressurized firing apparatus for a tubing conveyed perfor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-265843