Granted Patent B2

US 7,086,475 · App. 10/261,926 · Granted Aug 8, 2006

Assignee: Shell Oil Company

Abstract

Claims (18)

1. A method of reducing surge pressures when inserting a tubular member and an expansion device into a wellbore, comprising:

coupling the tubular member to an expansion device for radially expanding and plastically deforming the tubular member;

injecting a lubricating fluid into the wellbore; and

inserting the tubular member and the expansion device into the wellbore.

2. The method of claim 1 , wherein the lubricating fluid comprises:

drilling mud lubricant.

3. The method of claim 1 , further comprising:

permitting fluidic materials to be conveyed out of the wellbore through the tubular member and the expansion device during the inserting of the tubular member and the expansion device into the wellbore.

4. The method of claim 3 , further comprising:

not permitting fluidic materials to be conveyed out of the wellbore through the tubular member and the expansion device after the inserting of the tubular member and the expansion device into the wellbore.

5. A method of forming a wellbore casing within a borehole that traverses a subterranean formation, comprising:

injecting a lubricating fluid into the wellbore;

inserting the tubular member into the wellbore; and

radially expanding and plastically deforming the tubular member within the wellbore.

6. The method of claim 5 , further comprising:

permitting fluidic materials to be conveyed out of the wellbore through the tubular member during the inserting of the tubular member into the wellbore.

7. The method of claim 6 , further comprising:

not permitting fluidic materials to be conveyed out of the wellbore through the tubular member after the inserting of the tubular member into the wellbore.

Assignments (2)

Continuity (13)