Plug for operating a downhole device using tubing pressure
AssigneeSchlumberger Technology Corporation
InventorDinesh R. Patel
Life of this patent
Estimating the term…
Abstract
A plug for actuating a movable member of a device in a wellbore includes a housing adapted to be lowered into the wellbore and a seal member mounted on the housing. The seal member is arranged to engage the movable member such that a pressure applied to the first end of the housing moves the housing and the movable member. A chamber is provided in the housing, and a pressure responsive member at an inlet end of the chamber permits fluid communication with the chamber when the pressure applied to the first end of the housing reaches a predetermined pressure.
Claims17
A plug for actuating a movable member of a device in a wellbore, comprising:
- a housing adapted to be lowered into the wellbore;
- a seal member mounted on the housing to engage the movable member, wherein a closed chamber is formed between the housing and the device when the seal member engages the movable member;
- an internal chamber provided in the housing;
- and
- a pressure responsive member disposed at an inlet end of the chamber to allow fluid communication between the closed chamber and the internal chamber when a pressure applied to a first end of the housing reaches a predetermined pressure, wherein the pressure applied to the first end of the housing moves the housing and the movable member.
A plug for actuating a movable member of a device in a wellbore, comprising:
- a housing adapted to be lowered into a wellbore;
- a seal member mounted on the housing, the seal member being arranged to engage the movable member such that a pressure applied to a first end of the housing moves the housing and the movable member;
- a chamber provided in the housing;
- and
- a pressure responsive member disposed at an inlet end of the chamber, the pressure responsive member being arranged to permit fluid communication with the chamber when the pressure applied to the first end of the housing reaches a predetermined pressure.
An apparatus for operating a device in a wellbore, comprising:
- a movable member coupled to actuate the device;
- and
- a plug for actuating the movable member, the plug comprising:
- a housing adapted to be lowered into the wellbore, the housing being provided with an internal chamber;
- a seal member mounted on the housing, the seal member being arranged to engage the movable member such that a pressure applied to a first end of the housing moves the housing and the movable member;
- and
- a pressure responsive member disposed at an inlet end of the internal chamber to allow fluid communication with the internal chamber when the pressure applied to the first end of the housing reaches a predetermined pressure.
An apparatus for use in a wellbore having a tubular member suspended therein, comprising:
- a valve;
- a movable member coupled to actuate the valve;
- and
- a plug for actuating the movable member, the plug comprising a housing having an internal chamber and a seal member mounted on the housing, the seal member for engaging the movable member such that a pressure applied to a first end of the housing moves the plug and the movable member to actuate the valve, the plug further comprising a pressure responsive member for allowing fluid communication with the internal chamber when the pressure applied to the first end of the housing reaches a predetermined pressure.
A method for actuating a movable member of a device in a wellbore, comprising:
- providing a plug comprising a housing, an internal chamber in the housing, a pressure responsive member at an inlet end of the internal chamber, and a seal member mounted on the housing;
- lowering the plug to the movable member such that the seal member engages the movable member;
- and
- applying sufficient pressure to the housing to move the plug and the movable member.
Dependencies are inferred from the claim text.