Method of repair of collapsed or damaged tubulars downhole
AssigneeBaker Hughes Incorporated
InventorsJames A. Sonnier, John L. Baugh, Gerald D. Lynde
Life of this patent
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Abstract
A method of repairing tubulars downhole is described. A swage is secured to a force magnification tool, which is, in turn, supported by an anchor tool. Applied pressure sets the anchor when the swage is properly positioned. The force magnification tool strokes the swage through the collapsed section. The anchor can be released and weight set down on the swage to permit multiple stroking to get through the collapsed area. The swage diameter can be varied.
Claims17
An adjustable swage for use on a downhole tubular, comprising:
- a rounded body comprising of non-cantilevered segments mounted to a mandrel wherein said segments are movable into a plurality of positions to create a variety of substantially continuous circumferences at a high segment of said body.
An adjustable swage for use on a downhole tubular, comprising:
- a rounded body mounted to a mandrel wherein said body is movable into a plurality of positions to create a variety of substantially continuous circumferences at a high segment of said body;
- said substantially continuous circumferences extend for a full 360°;
- said body is formed of a plurality of abutting segments movable with respect to each other.
An adjustable swage for use on a downhole tubular, comprising:
- a rounded body mounted to a mandrel wherein said body is movable into a plurality of positions to create a variety of substantially continuous circumferences;
- said substantially continuous circumferences extend for a full 360°;
- said body is formed of a plurality of abutting segments movable with respect to each other;
- said segments each comprise a high location and at least some of said segments are movable to selectively align said high locations to obtain a maximum diameter or to offset them to attain a minimum diameter.
An adjustable swage for use on a downhole tubular, comprising:
- a rounded body mounted to a mandrel wherein said body is movable into a plurality of positions to create a variety of substantially continuous circumferences at a high segment of said body;
- said substantially continuous circumferences extend for a full 360°;
- said body is formed of a plurality of abutting segments movable with respect to each other;
- said segments are wedge shaped having a narrow end and a wide end and are arranged in an alternating pattern where the narrow end of one segment, in a first orientation, is adjacent the wide end of a neighboring segment, in a second orientation, on either side.
An adjustable swage for use on a downhole tubular, comprising:
- a rounded body mounted to a mandrel wherein said body is movable into a plurality of positions to create a variety of substantially continuous circumferences;
- said substantially continuous circumferences extend for a full 360°;
- said body is formed of a plurality of abutting segments movable with respect to each other;
- said segments are wedge shaped having a narrow end and a wide end and are arranged in an alternating pattern where the narrow end of one segment, in a first orientation, is adjacent the wide end of a neighboring segment, in a second orientation, on either side;
- said segments in one of said first and second orientations is selectively held fixed and said segments in the other of said first and second orientations is movable.
Dependencies are inferred from the claim text.