Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges
Patent
1982-07-02
1985-01-29
Pate, III, William F.
Boring or penetrating the earth
Boring with explosion in inaccessible hole
Independent firing of plural charges
102215, 102217, 102317, E21B 43116
Patent
active
044960107
ABSTRACT:
A method and system for selecting and arming each one of a plurality of firing modules in a single-line selective perforating system is disclosed. A single firing line connects each firing module one at a time in a sequence to a control unit to receive power and control signals therefrom. Each module generates internally a module active time interval in response to being connected to the firing line power. Each time interval has a first portion during which the module generates an identification pulse to the control unit to indicate that another module has been connected to the firing line, and a second portion during which the module is enabled to receive a selection pulse from the control unit to terminate further sequencing of the modules to locate the module to be selected. The next module to receive power from the control unit is connected to the firing line by a pass-thru switch in the last connected module at the end of its active time interval if that module was not selected for firing.
REFERENCES:
patent: 2297006 (1942-09-01), Lohman
patent: 2546686 (1951-03-01), Bickel et al.
patent: 2821136 (1958-01-01), Castel
patent: 2871784 (1959-02-01), Blair
patent: 3010396 (1961-11-01), Coleman
patent: 3102476 (1963-09-01), Naeseth
patent: 3126964 (1964-03-01), Rue
patent: 3133231 (1964-05-01), Fail et al.
patent: 3246707 (1966-04-01), Bell
patent: 3306208 (1967-02-01), Bergey et al.
patent: 3312869 (1967-04-01), Werner
patent: 3316451 (1967-04-01), Silberman
patent: 3327791 (1967-06-01), Harrigan, Jr.
patent: 3327792 (1967-06-01), Boop
patent: 3380540 (1968-04-01), Fields
patent: 3417259 (1968-12-01), Nozawa et al.
patent: 3424924 (1969-01-01), Leisinger et al.
patent: 3441093 (1969-04-01), Boop
patent: 3517757 (1970-06-01), Hart
patent: 3517758 (1970-06-01), Schuster
patent: 3571605 (1971-03-01), Dobson
patent: 3603844 (1971-09-01), Fritz
patent: 3717095 (1973-02-01), Vann
patent: 3748955 (1973-07-01), Gatermann et al.
patent: 3762331 (1973-10-01), Vlahos
patent: 3768408 (1973-10-01), Hallmark
patent: 3773120 (1973-11-01), Stroud et al.
patent: 3780654 (1973-12-01), Shimizu
patent: 3851589 (1974-12-01), Meyer
patent: 3934514 (1976-01-01), Dawkins
patent: 3935514 (1976-01-01), Ellin
patent: 4007796 (1977-02-01), Boop
patent: 4051907 (1977-10-01), Estes
patent: 4100978 (1978-07-01), Boop
patent: 4157069 (1979-06-01), Gustafsson et al.
patent: 4208966 (1980-06-01), Hart
Pate III William F.
Schlumberger Technology Corporation
LandOfFree
Single-wire selective performation system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Single-wire selective performation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-wire selective performation system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-502036