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US 6,179,064 B2Granted
System for indicating the firing of a perforating gun
AssigneeSchlumberger Technology Corporation
InventorVladimir Vaynshteyn
Life of this patent
Estimating the term…
Abstract
A system for use in a subterranean well includes a tubing, a perforating gun, a detonator and circuitry. The detonator is adapted to fire the perforating gun. The circuitry is adapted to determine whether the perforating gun has fired and based on the determination, operate a valve of the tubing to transmit a stimulus to the surface of the well to indicate whether the perforating gun has fired.
Claims20
A system for use in a subterranean well, comprising:
- a tubing including a valve;
- a perforating gun;
- a detonator adapted to fire the perforating gun;
- and
- circuitry adapted to:
- determine whether the perforating gun has fired;
- and
- based on the determination, operate the valve to transmit a stimulus to the surface of the well to indicate whether the perforating gun has fired.
5 more elements
A method comprising:
- determining downhole in a subterranean well whether a perforating gun has fired;
- and
- based on the determination, operating a valve to transmit a stimulus to the surface of the well to indicate whether the perforating gun has fired.
A module for use downhole in a subterranean well, the module comprising:
- a valve adapted to selectively establish fluid communication between a passageway of a downhole string and an annulus surrounding the string;
- a sensor;
- and
- circuitry coupled to the sensor and adapted to:
- use the sensor to determine whether a perforating gun has fired;
- and
- based on the determination, operate the valve to transmit a stimulus to the surface of the well to indicate whether the perforating gun has fired.
4 more elements
Dependencies are inferred from the claim text.