Method and apparatus for sealing tubulars
AssigneeWeatherford/Lamb, Inc.
InventorsEric M. TWARDOWSKI, Albert C. ODELL, II, Tuong Thanh LE
Life of this patent
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Abstract
A method of controlling fluid flow between two tubulars includes disposing a sealing member in an annular area between two tubulars, wherein the two tubulars partially overlap; moving the sealing member to a lower position where it is not in contact with one of the tubulars, thereby allowing fluid flow through the annular area; and moving the sealing member to an upper position where it is in contact with both of the tubulars, thereby preventing fluid flow through the annular area.
Claims21
A method of controlling fluid flow between two tubulars, comprising:
- disposing a sealing member in an annular area between partially overlapping two tubulars;
- moving the sealing member to a lower position where it is not in contact with one of the tubulars, thereby allowing fluid flow through the annular area;
- and
- moving the sealing member to an upper position where it is in contact with both of the tubulars, thereby preventing fluid flow through the annular area.
A sealing assembly, comprising:
- a first tubular having a recess;
- a second tubular having a raised portion and partially overlapping the first tubular;
- a sealing member disposed in the recess and between the first tubular and the second tubular,
- wherein the sealing member is movable in the recess between a lower position and an upper position,
- where in the upper position, the sealing member is in contact with the raised portion to prevent fluid flow through between the tubulars, and
- where in the lower position, the sealing member is not in contact with the raised portion to allow fluid flow between the tubulars.
A valve arrangement in a tubular, comprising:
- a first one way valve configured to prevent fluid flow in the tubular in a first direction;
- and
- a second one way valve configured to prevent fluid flow in the tubular in a second, opposite direction.
A method of completing a wellbore, comprising:
- providing a tubular having a first one way valve configured to prevent fluid flow in the tubular in a first direction and a second one way valve configured to prevent fluid flow in the tubular in a second, opposite direction;
- supplying a cement through the first and second valves and out of the tubular;
- closing the second one way valve to prevent cement from returning into the tubular;
- and
- closing the first one way valve and applying pressure above the first one way valve.
Dependencies are inferred from the claim text.