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US 10,590,733 B2Granted
Method and apparatus for sealing tubulars
AssigneeWeatherford Technology Holdings, LLC
InventorsEric M. Twardowski, Albert C. Odell, II, Tuong Thanh Le
Life of this patent
Estimating the term…
Abstract
A valve arrangement in 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.
Claims17
A valve arrangement in a tubular, comprising:
- a first one way valve configured to prevent fluid flow in the tubular in a first direction;
- a second one way valve configured to prevent fluid flow in the tubular in a second, opposite direction;
- a drilling member disposed on a lower end of the tubular and below the first and second one way valves, wherein the first and second one way valves are held open by a member extending through the first and second one way valves during drilling.
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;
- extending the wellbore by using the tubular in a drilling operation;
- maintaining the first and second one way valves in an open position during the drilling operation;
- supplying a cement through the first and second one way 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.
4 more elements
A tubular string for use in a wellbore, comprising:
- a tubular;
- a first one way valve configured to prevent fluid flow in the tubular in a first direction;
- a second one way valve configured to prevent fluid flow in the tubular in a second, opposite direction;
- a drilling member disposed at a lower end of the tubular and below the first and second one way valves;
- and
- a motor coupled to the tubular for rotating the drilling member, wherein the motor retains the first and second one way valves in an operation open position during drilling.
3 more elements
Dependencies are inferred from the claim text.