METHOD OF AND KIT FOR INSTALLING A CENTRALIZER ON A PIPE SEGMENT
First Claim
1. A method of installing a centralizer on a pipe segment, comprising the steps of:
- installing a stop collar on a pipe segment;
receiving an end collar of a first centralizer portion onto the pipe segment on a first side of the stop collar and receiving an end collar of a second centralizer portion onto the pipe segment on a second side of the stop collar opposite the first side;
assembling a centralizer by coupling the first centralizer portion to the second centralizer portion;
wherein the range of axial movement of the centralizer along the pipe segment is limited by the stop collar.
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Accused Products
Abstract
First and second centralizer portions, comprising a first end collar coupled to a plurality of first bow spring segments and a second end collar coupled to a plurality of second bow spring segments, respectively, may be received onto the pipe segment on opposite sides of an installed stop collar. The plurality of first bow spring segments are coupled to the plurality of second bow spring segments, such as by welding, to form a bow spring centralizer with a plurality of bow springs extending between the first and second end collars, the bow spring centralizer movable along the pipe segment within a limited range defined by the separation of the first and second end collars. In one embodiment, the first centralizer portion and the second centralizer portion may be formed by cutting through the bow springs of a bow spring centralizer.
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Citations
17 Claims
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1. A method of installing a centralizer on a pipe segment, comprising the steps of:
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installing a stop collar on a pipe segment; receiving an end collar of a first centralizer portion onto the pipe segment on a first side of the stop collar and receiving an end collar of a second centralizer portion onto the pipe segment on a second side of the stop collar opposite the first side; assembling a centralizer by coupling the first centralizer portion to the second centralizer portion; wherein the range of axial movement of the centralizer along the pipe segment is limited by the stop collar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A kit for assembling a bow spring centralizer about a stop collar on a pipe segment comprising:
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a first centralizer portion having a first end collar and a first plurality of bow spring segments coupled at a first end to the first end collar; a second centralizer portion having a second end collar and a second plurality of bow spring segments coupled at a first end to the second end collar; wherein at least one of the first plurality of bow spring segments has a second end with a shape complimentary to a second end of at least one of the second plurality of bow spring segments to facilitate forming a bow spring by welding the second end of the at least one of the first plurality of bow spring segments to the second end of the at least one of the second plurality of bow spring segments. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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11. The kit of claim 11 wherein the kit further comprises a backing plate.
Specification