Actuatable plug system for use with a tubing string
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-033/129
E21B-033/134
출원번호
US-0957310
(2015-12-02)
등록번호
US-10233720
(2019-03-19)
발명자
/ 주소
Tse, Kyle
Graham, Robert M.
Cromer, Christopher
출원인 / 주소
SCHLUMBERGER TECHNOLOGY CORPORATION
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
A technique facilitates deployment and operation of actuatable plugs, e.g. frac plugs or bridge plugs. According to one embodiment, the plug comprises a flexible element slidably mounted on a portion of a cone, e.g. an upper cone. The upper cone comprises a tapered surface which works in cooperation
A technique facilitates deployment and operation of actuatable plugs, e.g. frac plugs or bridge plugs. According to one embodiment, the plug comprises a flexible element slidably mounted on a portion of a cone, e.g. an upper cone. The upper cone comprises a tapered surface which works in cooperation with upper slips movably secured to the upper cone. The bridge plug also comprises a lower cone which comprises a lower tapered surface which works in cooperation with lower slips movably secured to the lower cone. Depending on the application, the plug may be constructed with each of these features combined into an overall assembly or with a portion of these features to facilitate plug operation in a specific environment and operation.
대표청구항▼
1. A system for use in a well, comprising: a well tubing having a plug deployed in a wellbore lined by a well casing, the plug being radially expandable and comprising: a cone portion disposed in cooperation with an extended portion;a sealing element mounted around the extended portion adjacent to t
1. A system for use in a well, comprising: a well tubing having a plug deployed in a wellbore lined by a well casing, the plug being radially expandable and comprising: a cone portion disposed in cooperation with an extended portion;a sealing element mounted around the extended portion adjacent to the cone portion;a plurality of slips slidably mounted on the cone portion, the plurality of slips being joined by bridge portions which establish slots between the slips; anda plurality of retention members disposed in the slots such that interference between the retention members and the bridge portions retains the plurality of slips on the cone portion until the plug is radially expanded, the plurality of retention members operating along the slots during radial expansion of the plug to cause even break-out of the plurality of slips. 2. The system as recited in claim 1, wherein the cone portion is an upper cone portion and the extended portion is affixed to the upper cone portion. 3. The system as recited in claim 2, wherein the plug further comprises a lower cone to which a plurality of lower slips is slidably mounted. 4. The system as recited in claim 3, wherein the extended portion is slidably received in a recess of the lower cone. 5. The system as recited in claim 4, wherein the plurality of lower slips is held on the lower cone by a plurality of lower retention members received in slots between the lower slips until the plug is radially expanded. 6. The system as recited in claim 5, wherein the sealing element is adjacent to the lower cone. 7. The system as recited in claim 1, wherein the plurality of retention members comprises pins secured to the cone portion and extending into the slots between the slips of the plurality of slips. 8. The system as recited in claim 1, wherein the bridge portions are fractured when the plug is radially expanded. 9. The system as recited in claim 4, wherein the plug is radially expanded by moving the extended portion farther into the recess of the lower cone. 10. A device for use in a well, comprising: a plug selectively actuatable between a radially contracted configuration and a radially expanded configuration via longitudinal manipulation of the plug, the plug comprising:an upper cone portion;a lower cone;an extended portion positioned in cooperation with the upper cone portion and the lower cone;a sealing element mounted around the extended portion between the upper cone portion and the lower cone;slips slidably mounted on the upper cone portion and the lower cone, the slips having slots therebetween; and retention members secured to the upper cone portion and the lower cone and located within the slots between the slips, the retention members to retain the slips on the upper cone portion and the lower cone while the plug is in the radially contracted configuration, and operated along the slots to force even break-out of the slips as the plug is actuated to the radially expanded configuration. 11. The system as recited in claim 10, wherein the slips slidably mounted on the upper cone portion are connected together by bridge portions when the plug is in the radially contracted configuration. 12. The system as recited in claim 11, wherein the slips slidably mounted on the lower cone are connected together by bridge portions when the plug is in the radially contracted configuration. 13. The system as recited in claim 12, wherein the bridge portions are frangible and fracture as the plug is transitioned to the radially expanded configuration. 14. The system as recited in claim 12, wherein the bridge portions are sized to create the slots between the slips for receiving the retention members. 15. The system as recited in claim 10, wherein the upper cone portion is affixed to the extended portion and the lower cone comprises a recess for slidably receiving the extended portion. 16. The system as recited in claim 10, wherein the retention members are in the form of pins. 17. A method, comprising: forming a plug for sealing against a surrounding tubular surface by providing a first cone with an extended portion slidably received in a second cone;mounting a sealing element around the extended portion between the first cone and the second cone;positioning a first set of slips on a tapered surface of the first cone and a second set of slips on a tapered surface of the second cone; andsecuring the first set of slips and the second set of slips via retention members disposed in slots of the first set of slips and the second set of slips mounted to the first cone and the second cone respectively, the first set of slips and the second set of slips configured to separate upon movement of the retention members in the slots of the first set of slips and the second set of slips when the plug is set. 18. The method as recited in claim 17, further comprising actuating the plug by moving the first cone and the second cone toward each other until the first set of slips, the second set of slips, and the sealing element are forced radially outwardly against the surrounding tubular surface. 19. The method as recited in claim 17, further comprising joining the first set of slips to each other by bridge portions. 20. The method as recited in claim 17, further comprising forming the sealing element from a rubber material.
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이 특허에 인용된 특허 (6)
Frazier, W. Lynn, Configurable inserts for downhole plugs.
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