IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0916095
(2010-10-29)
|
등록번호 |
US-8579023
(2013-11-12)
|
발명자
/ 주소 |
- Nish, Randall William
- Vogel, Jason Jon
|
출원인 / 주소 |
|
대리인 / 주소 |
Thorpe North & Western LLP
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
141 |
초록
▼
A downhole tool or plug includes a mandrel with an element, a slip ring, and a cone pressable between an upper push sleeve assembly and a lower anvil. The upper push sleeve assembly including a lock ring having one or more interior teeth on an interior of the lock ring. A mandrel sleeve is at least
A downhole tool or plug includes a mandrel with an element, a slip ring, and a cone pressable between an upper push sleeve assembly and a lower anvil. The upper push sleeve assembly including a lock ring having one or more interior teeth on an interior of the lock ring. A mandrel sleeve is at least partially received within a recess in the mandrel and affixed with respect to the mandrel, and has one or more exterior teeth on an exterior of the mandrel sleeve.
대표청구항
▼
1. A downhole tool device disposable in a casing of an oil or gas well, comprising: a) a mandrel with an element disposed thereon compressible and radially expandable to seal between the mandrel and the casing, and with a slip ring disposed thereon radially expandable to engage the casing, and with
1. A downhole tool device disposable in a casing of an oil or gas well, comprising: a) a mandrel with an element disposed thereon compressible and radially expandable to seal between the mandrel and the casing, and with a slip ring disposed thereon radially expandable to engage the casing, and with a cone adjacent the slip ring to radially displace the slip ring, and the element, the slip ring and the cone being pressable between an upper push sleeve assembly and a lower anvil on the mandrel;b) the upper push sleeve assembly including a lock ring having one or more interior teeth on an interior of the lock ring with an inclined surface inclined with respect to a longitudinal axis of the mandrel and facing towards the anvil, and a blunt surface essentially perpendicular to the longitudinal axis and facing away from the anvil;c) a recess formed in the mandrel and comprising a shallow annular recess in the mandrel and a deeper annular groove at one end of the shallow annular recess;d) a mandrel sleeve at least partially received within the recess in the mandrel and affixed with respect to the mandrel, and having one or more exterior teeth on an exterior of the mandrel sleeve with an inclined surface inclined with respect to the longitudinal axis of the mandrel and facing towards the upper push sleeve assembly, and a blunt surface essentially perpendicular to the longitudinal axis and facing towards the anvil, and having one or more interior teeth on an interior of the mandrel sleeve that grip the mandrel;e) the mandrel sleeve comprising a cylinder disposed in the shallow annular recess of the mandrel and an interior projecting annular lip projecting into the deeper annular groove; andd) the one or more interior teeth of the lock ring being located longitudinally away from the one or more exterior teeth of the mandrel sleeve when unset, and the blunt surface of the one or more interior teeth of the lock ring engaging the blunt surface of the one or more exterior teeth of the mandrel sleeve when set. 2. A device in accordance with claim 1, wherein the mandrel sleeve is longitudinally split into at least two partial segments. 3. A device in accordance with claim 1, wherein the recess in the mandrel comprises: an annular shallow recess and an annular deep groove disposed at an end of the shallow recess; and wherein the mandrel sleeve comprises: a cylinder disposed in the annular shallow recess of the mandrel; andan annular lip at an end of the cylinder projecting inwardly into the annular deep groove of the mandrel; andthe cylinder and annular lip being longitudinally split into at least two partial segments. 4. A device in accordance with claim 1, wherein both the mandrel sleeve and the lock ring circumscribe a majority of the mandrel; and wherein the one or more interior teeth of the lock ring and the one or more exterior teeth of the mandrel sleeve circumscribe a majority of the mandrel. 5. A device in accordance with claim 1, wherein the one or more interior teeth of the lock ring and the one or more exterior teeth of the mandrel sleeve are substantially annular. 6. A device in accordance with claim 1, wherein the mandrel includes a composite material; and wherein the mandrel sleeve and the lock ring are formed of metal. 7. A device in accordance with claim 1, wherein an outer dimension of the mandrel sleeve defined by the one or more teeth is flush or recessed with a diameter of the mandrel adjacent the recess in the mandrel. 8. A device in accordance with claim 1, wherein the lock ring has a slot and can expand to fit the mandrel and can contract to engage the mandrel sleeve; and wherein the push sleeve assembly further includes a solid annular ring circumscribing the lock ring. 9. A downhole tool device disposable in a casing of an oil or gas well, comprising: a) a mandrel comprising a composite material and carrying an element compressible and radially expandable to seal between the mandrel and the casing, a slip ring radially expandable to engage the casing, a cone adjacent the slip ring to radially displace the slip ring, and an upper push sleeve assembly, and having a lower anvil affixed to the mandrel, with the element, the slip ring and the cone being pressable between the upper push sleeve and the lower anvil during setting;b) at least one lock tooth associated with the upper push sleeve;c) at least one tooth on an exterior of the mandrel formed of a different material than the mandrel; andd) the at least one lock tooth of the upper push sleeve engaging the at least one tooth of the mandrel when set to lock the upper push sleeve with respect to the mandrel;e) a recess formed in the mandrel and comprising a shallow annular recess in the mandrel and a deeper annular groove at one end of the shallow annular recess;f) a mandrel sleeve at least partially received within the recess in the mandrel and affixed with respect to the mandrel, the mandrel sleeve having one or more interior teeth on an interior of the mandrel sleeve that grip the mandrel;g) a plurality of exterior teeth axially arrayed on an exterior of the mandrel sleeve;h) a lock ring associated with the upper push sleeve and axially displaceable during setting from a position away from the mandrel sleeve to a position towards the mandrel sleeve when set;i) a plurality of interior teeth on an interior of the lock ring which engage the plurality of exterior teeth of the mandrel sleeve when set;j) the mandrel sleeve comprising a cylinder disposed in the shallow annular recess of the mandrel and an interior projecting annular lip projecting into the deeper annular groove; andk) the cylinder and annular lip being longitudinally split into at least two partial segments. 10. A device in accordance with claim 9, wherein both the mandrel sleeve and the lock ring circumscribe a majority of the mandrel; and wherein the plurality of interior teeth of the lock ring and the plurality of exterior teeth of the mandrel sleeve circumscribe a majority of the mandrel. 11. A device in accordance with claim 9, wherein the plurality of interior teeth of the lock ring and the plurality of exterior teeth of the mandrel sleeve are substantially annular. 12. A device in accordance with claim 9, wherein an outer dimension of the mandrel sleeve defined by the plurality of exterior teeth is flush or recessed with a diameter of the mandrel adjacent the recess in the mandrel. 13. A device in accordance with claim 9, wherein the lock ring has a slot and can expand to fit the mandrel and can contract to engage the mandrel sleeve; and wherein the push sleeve assembly further includes a solid annular ring circumscribing the lock ring. 14. A downhole tool device disposable in a casing of an oil or gas well, comprising: a) a mandrel including a composite material;b) an element carried by the mandrel and axially displaceable along the mandrel during setting and compressible and radially expandable to seal between the mandrel and the casing when set;c) at least one a slip ring carried by the mandrel and radially expandable during setting to engage the casing when set;d) at least one cone carried by the mandrel and adjacent the at least one slip ring and axially displaceable during setting to radially displace the slip ring;e) a lower anvil fixed with respect to the mandrel;f) an upper push sleeve assembly carried by the mandrel with the element, the at least one slip ring and the at least one cone located between the upper push sleeve and the lower anvil, the upper push sleeve assembly being axially displaceable during setting to press the element, the at least one slip ring and the at least one cone between the upper push sleeve assembly and the lower anvil on the mandrel;g) a shallow annular recess formed in the mandrel between the upper push sleeve assembly and the anvil when unset;h) a deeper annular groove formed in the shallow annular recess of the mandrel at an end of the shallow annular recess;i) a mandrel sleeve disposed in the shallow annular recess with an annular lip at an end thereof projecting inwardly into the deeper annular groove, the mandrel sleeve having one or more interior teeth on an interior of the mandrel sleeve that grip the mandrel;j) a plurality of annular teeth arrayed axially on the exterior of the mandrel sleeve;k) the upper push sleeve assembly including a lock ring having a slot and being radially expandable and contractable;l) a plurality of annular interior teeth arrayed axially on an interior of the lock ring, the plurality of interior teeth of the lock ring engage the plurality of external teeth of the mandrel sleeve when set; andm) the upper push sleeve assembly including a collar circumscribing the lock ring. 15. A device in accordance with claim 14, wherein the plurality of interior teeth of the lock ring have an inclined surface inclined with respect to a longitudinal axis of the mandrel and facing towards the anvil, and a blunt surface essentially perpendicular to the longitudinal axis and facing away from the anvil; andthe plurality of exterior teeth of the mandrel sleeve have an inclined surface inclined with respect to the longitudinal axis of the mandrel and facing towards the upper push sleeve assembly, and a blunt surface essentially perpendicular to the longitudinal axis and facing towards the anvil; andthe plurality of interior teeth of the lock ring being located longitudinally away from the plurality of exterior teeth of the mandrel sleeve when unset, and the blunt surface of the plurality of internal teeth of the lock ring engaging the blunt surface of the plurality of external teeth of the mandrel sleeve when set.
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