Pipe coupling make up assembly
AssigneeMorphpackers Limited
InventorsMichael Ledingham, David Glen Martin
Life of this patent
Estimating the term…
Abstract
A pipe coupling make up assembly and a method of making up a pipe coupling between tubular sections at a well. A first tubular section in a tubular string at the well is gripped and supported in the assembly. A second tubular is supported and moved to locate a first end of the second tubular section into an expanded first end of the first tubular section. A swaged die is arranged around the first tubular section and forced along the first tubular section towards the second tubular section. This causes the expanded first end to move radially inwards under elastic and plastic deformation and create a metal to metal seal between the first ends of the first and second tubular sections.
Claims20
A pipe coupling make up assembly for connecting tubular sections at a well, the assembly comprising:
- a first gripping means to support a first tubular section;
- a second gripping means to position and support a second tubular section relative to the first tubular section;
- a swaged die having an inner cylindrical surface matched to an outer surface of the first tubular section;
- a drive means to move the swaged die relative to the first and second tubular sections so as to force an expanded end of the first tubular section radially inwards and create a metal to metal seal between the first and second tubular sections.
A method of making up a pipe coupling between tubular sections at a well, comprising the steps:
- (a) gripping a first tubular section in a tubular string at the well;
- (b) supporting a second tubular section and moving the second tubular section to the first tubular section;
- (c) locating a first end of the second tubular section into an expanded first end of the first tubular section;
- (d) arranging a swaged die around the first tubular section;
- (e) forcing the swaged die along the first tubular section towards the second tubular section;
- and
- (f) causing the expanded first end to move radially inwards under elastic and plastic deformation and creating a metal to metal seal between the first ends of the first and second tubular sections.
Dependencies are inferred from the claim text.