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US 6,640,903 B1Granted
Forming a wellbore casing while simultaneously drilling a wellbore
AssigneeShell Oil Company
InventorsRobert Lance Cook, David Paul Brisco, R. Bruce Stewart, Lev Ring, Robert Donald Mack, Alan B. Duell, Andrei Filippov
Life of this patent
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Abstract
A wellbore casing is formed simultaneously with the drilling out of the wellbore.
Claims34
A method of forming a wellhead, comprising:
- drilling a wellbore;
- positioning an outer casing at least partially within an upper portion of the wellbore;
- positioning a first tubular member within the outer casing;
- expanding at least a portion of the first tubular member into contact with an interior surface of the outer casing;
- positioning a second tubular member within the outer casing and the first tubular member;
- and
- expanding at least a portion of the second tubular member into contact with an interior portion of the outer casing;
- wherein, after expanding the portions of the first and second tubular members into contact with the interior portion of the outer casing, at least a portion of the second tubular member is positioned within the first tubular member;
- and
- wherein, after expanding the portions of the first and second tubular members into contact with the interior portion of the outer casing, the first tubular member and the second tubular member define an annular passage there between.
7 more elements
A wellbore casing, comprising:
- a first tubular member;
- and
- a second tubular member coupled to the first tubular member in an overlapping relationship by a process comprising:
- positioning the second tubular member within the first tubular member with at least a portion of the second tubular member overlapping with a portion of the first tubular member;
- and
- radially expanding the overlapping portions of the first and second tubular members;
- wherein the inner diameter of the radially unexpanded portion of the first tubular member is substantially equal to the inner diameter of the radially expanded portion of the second tubular member.
4 more elements
A wellbore casing, comprising:
- a first tubular member having a first inside diameter;
- and
- a second tubular member having a second inside diameter substantially equal to the first inside diameter coupled to the first tubular member in an overlapping relationship;
- wherein the first and second tubular members are coupled by a process comprising deforming the overlapping portions of the first and second tubular members;
- and
- wherein the second tubular member is radially expanded by the process comprising:
- supporting the second tubular member and a mandrel within the wellbore using a support member;
- injecting a fluidic material into the wellbore;
- pressurizing an interior region of the mandrel;
- and
- displacing a portion of the mandrel relative to the support member.
8 more elements
Dependencies are inferred from the claim text.