Apparatus and method for valve actuation
AssigneeBaker Hughes Incorporated
InventorsTobias Kischkat, Eick Niemeyer, Alexander Otto
Life of this patent
Estimating the term…
Abstract
An apparatus for controlling fluid flow that includes a chamber having a first valve and a second valve; a sensor that senses a pressure parameter associated with the chamber; and a controller programmed to operate the first valve and the second valve in response to the sensed pressure parameter may be used to control for flow and to obtain data relating to a formation and/or formation fluid.
Claims18
An apparatus for controlling fluid flow in a wellbore, comprising:
- a pump configured to be disposed in the wellbore, the pump having:
- a chamber having a first valve and a second valve;
- a sensor configured to sense a pressure parameter associated with the chamber;
- and
- a controller programmed to operate the first valve and the second valve by estimating a pressure differential using the sensed pressure parameter, wherein the controller is programmed to use a reference pressure value to operable at least one of:
- (i) the first valve, and (ii) the second valve, and wherein the reference pressure relates to one of:
- (i) a fluid in the formation, (ii) a fluid in the wellbore;
- and (iii) a fluid in a sample container.
A method for controlling fluid flow, comprising:
- positioning a pump in a wellbore, the pump having a first valve, a second valve, and a chamber
- controlling the first valve and the second valve in fluid communication with the chamber by sensing a pressure parameter associated with the chamber and estimating a pressure differential using the sensed pressure parameter, and
- controlling fluid flow between a subsurface formation and the chamber using the first valve.
A method for controlling fluid flow, comprising:
- positioning a pump in a wellbore, the pump having a first valve and a second valve in communication with a chamber;
- controlling the first valve and the second valve by sensing a pressure parameter associated with the chamber and estimating a pressure differential using the sensed pressure parameter;
- and
- controlling fluid flow by using the second valve positioned between the chamber and one of:
- (a) a wellbore, and (b) a container.
An apparatus for sampling a fluid from a subsurface formation, comprising:
- a pump in fluid communication with the at least one sampling tank, the pump including:
- a chamber having a first valve and a second valve;
- a sensor configured to sense a pressure parameter associated with the chamber;
- and
- a controller programmed to operate the first valve and the second valve by estimating a pressure differential using the sensed pressure parameter;
- a sampling probe configured to contact a wellbore wall and being in fluid communication with the first valve;
- wherein the at least one sampling tank is in fluid communication with the second valve.
Dependencies are inferred from the claim text.