Well isolation system
AssigneeSchlumberger Technology Corporation
InventorsDinesh R. Patel, Christian C. Spring
Life of this patent
Estimating the term…
Abstract
A fluid control system actuatable by a tool includes a valve and a valve operator coupled to operate the valve between an open and closed position. The valve operator is adapted to be responsive to signals generated by the tool such that a first combination is received when the tool is run in a first direction and a second combination is received when the tool is run in a second direction. The valve operator includes electronic circuitry adapted to actuate the valve open in response to the first combination and to actuate the valve closed in response to the second combination.
Claims33
A fluid control system actuatable by a tool, comprising:
- a valve;
- and
- a valve operator coupled to operate the valve between an open and closed position,
- the valve operator adapted to be responsive to electrical signals generated by the tool such that a first combination of electrical signals is received when the tool is run in a first direction and a second combination of electrical signals is received when the tool is run in a second direction.
A fluid control system actuatable by a tool, comprising:
- a valve:
- and
- a valve operator coupled to operate the valve between an open and closed position,
- the valve operator adapted to be responsive to signals generated by the tool such that a first combination is received when the tool is run in a first direction and a second combination is received when the tool is run in a second, direction,
- wherein the inductive coupler switch portion includes a female coil and the tool includes a male coil.
A formation isolation valve comprising:
- a valve;
- and
- a valve operator having a first mechanism responsive to a first type of command signal to actuate the valve and a second mechanism responsive to a second type of command signal to actuate the valve,
- wherein the first mechanism includes a pressure transducer.
A system for use in a well comprising:
- an activation tool;
- and
- a valve system actuatable by the activation tool, the valve system including a valve and a operator coupled to the valve, the operator including electronic circuitry adapted to detect direction of movement of the activation tool and to open or close the valve based on the detected direction of movement.
A method of operating a valve in a well, comprising:
- passing an activation tool by a valve operator;
- generating different electrical states in the valve operator by detecting direction of movement of the activation tool;
- and
- activating the valve based on the electrical state of the valve operator.
A method of operating a valve in a well, comprising:
- passing an activation tool by a valve operator;
- generating different states in the valve operator depending on direction of movement of the activation tool:
- and
- activating the valve based on the state of the valve operator;
- lowering the activation tool to open the valve;
- raising the activation tool to close the valve;
- and
- maintaining the valve opened if the activation tool is raised within a predetermined amount of time after the activation tool has been lowered to open the valve.
The method of clam 27, wherein the well includes a tubing, the method comprising applying the pressure pulse command through the tubing.
A valve operator comprising:
- a mandrel moveable to operate a valve assembly;
- a first chamber and a second chamber;
- and
- a first valve coupled to the first chamber actuatable to fill the first chamber with fluid or to remove fluid from the first chamber, pressure in the first chamber adapted to actuate the valve assembly to a first state ;
- and
- a second valve coupled to the second chamber actuatable to fill the second chamber with fluid or to remove fluid from the second chamber, pressure in the second chamber adapted to actuate the valve assembly to a second state.
Dependencies are inferred from the claim text.