| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0502799
(2014-09-30)
|
| 등록번호 |
US-9745803
(2017-08-29)
|
|
발명자
/ 주소 |
- Buytaert, Jean
- Hining, Ira Eugene
- Miller, Eugene Edward
- Levie, David E. Y.
- Baynham, Richard Ronald
|
| 출원인 / 주소 |
- ANTELOPE OIL TOOL & MFG. CO.
|
| 대리인 / 주소 |
MH2 Technology Law Group, LLP
|
| 인용정보 |
피인용 횟수 :
0 인용 특허 :
45 |
초록
▼
A centralizer, method, and centralizer assembly. For example, the centralizer assembly includes a first stop collar fixed in place on a tubular, and a first end collar that is sized to slide axially over the first stop collar. The centralizer assembly also includes a first retainer coupled with the
A centralizer, method, and centralizer assembly. For example, the centralizer assembly includes a first stop collar fixed in place on a tubular, and a first end collar that is sized to slide axially over the first stop collar. The centralizer assembly also includes a first retainer coupled with the first end collar. The first retainer prevents the first stop collar from sliding past the first stop collar in at least one axial direction. The assembly also includes a plurality of ribs coupled with the first end collar and configured to engage a surrounding tubular in which the tubular is disposed.
대표청구항
▼
1. A centralizer, comprising: a stop collar configured to be rotationally and axially fixed to a tubular, the stop collar defining an outer diameter;a body comprising a first end collar and one or more centralizing ribs directly coupled with the first end collar and configured to centralize the tubu
1. A centralizer, comprising: a stop collar configured to be rotationally and axially fixed to a tubular, the stop collar defining an outer diameter;a body comprising a first end collar and one or more centralizing ribs directly coupled with the first end collar and configured to centralize the tubular when installed thereon, wherein the first end collar has an inner diameter that is larger, along an entirety of the first end collar, than the outer diameter of the stop collar;a retainer coupled with the first end collar and having an inner diameter that is smaller than the outer diameter of the stop collar, wherein the retainer is configured to prevent the first end collar from sliding past the stop collar in at least one axial direction; anda second stop collar configured to be positionally fixed to the tubular, the second stop collar defining an outer diameter that is smaller than the inner diameter of the first end collar. 2. The centralizer of claim 1, wherein the stop collar comprises a thermal spray metal. 3. The centralizer of claim 2, wherein the thermal spray metal extends between about 0.10 inches and about 3.00 inches radially outward from the tubular. 4. The centralizer of claim 1, wherein the stop collar comprises a shell and a bonding material configured to be disposed at least partially within the shell, to bond the shell with the tubular. 5. The centralizer of claim 4, wherein the shell defines an inlet port extending therethrough, wherein the inlet port is configured to receive the bonding material therein. 6. The centralizer of claim 1, wherein the stop collar comprises a first arcuate shell, a second arcuate shell, and a bonding material configured to be disposed at least partially between the first arcuate shell and the tubular and between the second arcuate shell and the tubular, wherein the first and second arcuate shells are circumferentially adjacent when installed on the tubular. 7. The centralizer of claim 6, wherein the first arcuate shell and the second arcuate shell each define a circumferential end, wherein the circumferential end of the first arcuate shell contacts the circumferential end of the second arcuate shell. 8. The centralizer of claim 7, wherein the first arcuate shell and second arcuate shell together extend around the tubular, when installed thereon. 9. The centralizer of claim 1, wherein the body comprises a plurality of arcuate sections, wherein, when installed on the tubular, the retainer holds the plurality of arcuate sections together around the tubular. 10. The centralizer of claim 1, further comprising a second retainer, wherein the body further comprises a second end collar spaced axially apart from the first end collar, the second retainer being coupled with the second end collar. 11. The centralizer of claim 10, wherein at least a portion of the second stop collar defines an inner diameter that is smaller than an outer diameter of at least a portion of the second stop collar, such that the second end collar is prevented from sliding past the second stop collar on the tubular. 12. A centralizer, comprising: a stop collar configured to be rotationally and axially fixed to a tubular, the stop collar defining an outer diameter, wherein the stop collar forms an interference fit with the tubular;a body comprising a first end collar and one or more centralizing ribs directly coupled with the first end collar and configured to centralize the tubular when installed thereon, wherein the first end collar has an inner diameter that is larger, along an entirety of the first end collar, than the outer diameter of the stop collar; anda retainer coupled with the first end collar and having an inner diameter that is smaller than the outer diameter of the stop collar, wherein the retainer is configured to prevent the first end collar from sliding past the stop collar in at least one axial direction wherein the stop collar forms an interference fit with the tubular. 13. A method for assembling a centralizer on a tubular, comprising: attaching a stop collar to the tubular, wherein attaching comprises at least one of: spraying a thermal spray metal on the tubular, so as to form the stop collar in attachment with the tubular;forming an interference fit between the stop collar and the tubular; orpositioning a shell on the tubular and injecting a bonding material between the shell and the tubular;positioning an end collar of the centralizer at least partially over the stop collar, wherein the end collar defines an inner diameter along an entire axial length of the end collar that is larger than an outer diameter of the stop collar, and wherein the end collar is directly coupled to one or more centralizing ribs of the centralizer; andcoupling a retainer to the end collar, wherein at least a portion of the retainer defines an inner diameter that is smaller than the outer diameter of the stop collar, so as to prevent the end collar from sliding away from the stop collar in at least one direction relative to the tubular. 14. The method of claim 13, wherein positioning the end collar comprises sliding the end collar in a first axial direction at least partially over the stop collar, and wherein the retainer, when coupled to the end collar, prevents the end collar from sliding away from the stop collar in a second axial direction that is opposite to the first axial direction. 15. The method of claim 14, wherein coupling the retainer to the end collar comprises receiving at least a portion of the retainer radially between the tubular and the end collar. 16. A method for assembling a centralizer on a tubular, comprising: attaching a stop collar to the tubular, wherein attaching comprises at least one of: spraying a thermal spray metal on the tubular, so as to form the stop collar in attachment with the tubular;forming an interference fit between the stop collar and the tubular; orpositioning a shell on the tubular and injecting a bonding material between the shell and the tubular;positioning an end collar of the centralizer at least partially over the stop collar, wherein at least a portion of the end collar defines an inner diameter that is larger than an outer diameter of the stop collar; andcoupling a retainer to the end collar, wherein at least a portion of the retainer defines an inner diameter that is smaller than the outer diameter of the stop collar, so as to prevent the end collar from sliding away from the stop collar in at least one direction relative to the tubular,wherein coupling the retainer to the end collar comprises receiving the retainer around an outer diameter of the end collar. 17. The method of claim 16, wherein positioning the end collar comprises receiving the stop collar and the tubular laterally between at least two sections of the end collar. 18. The method of claim 17, wherein coupling the retainer comprises holding the at least two sections of the end collar together around the tubular. 19. A centralizer assembly for connecting to a tubular, comprising: a first stop collar fixed in place on the tubular;a first end collar that defines an inner diameter along an entire axial length of the first end collar, the inner diameter being larger than an outer diameter of the first stop collar, such that the first end collar is sized to slide axially over the first stop collar;a first retainer coupled with the first end collar, wherein the first retainer prevents the first end collar from sliding past the first stop collar in at least one axial direction; anda plurality of ribs directly coupled with the first end collar and configured to engage a surrounding tubular in which the tubular is disposed,wherein the first stop collar comprises: a shell comprising a molded material and defining a cavity therein, wherein the cavity is in communication with an outer diameter of the tubular; anda bonding material received into the cavity, to hold the shell on the tubular.
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