Magnetic key for operating a multi-position downhole tool
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-034/14
E21B-023/00
E21B-023/08
E21B-034/06
E21B-023/02
E21B-023/01
출원번호
US-0173816
(2014-02-06)
등록번호
US-9719327
(2017-08-01)
발명자
/ 주소
Gano, John C.
출원인 / 주소
Halliburton Energy Services, Inc.
대리인 / 주소
Richardson, Scott
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
A downhole tool for use in a wellbore tubular string comprises a housing having a bore therethrough forming part of a fluid flowpath through the wellbore tubular string, a sliding member operable to slide with respect to the housing, a plurality of magnetic pins, and a corresponding plurality of spr
A downhole tool for use in a wellbore tubular string comprises a housing having a bore therethrough forming part of a fluid flowpath through the wellbore tubular string, a sliding member operable to slide with respect to the housing, a plurality of magnetic pins, and a corresponding plurality of springs. A sliding line is formed by interfacing surfaces of the sliding member and the housing, and the plurality of pins comprise a locked position and an unlocked position whereby in the locked position at least one pin spans the sliding line to prevent the sliding member from sliding with respect to the housing and in the unlocked position no pins span the sliding line. The plurality of springs biases the pins towards the locked position.
대표청구항▼
1. A key for use in a downhole wellbore tubular string having at least one downhole tool, comprising: a body operable to fit in a bore of the wellbore tubular string;a plurality of magnets, each having at least one pole directed radially outward;wherein the plurality of magnets are located and orien
1. A key for use in a downhole wellbore tubular string having at least one downhole tool, comprising: a body operable to fit in a bore of the wellbore tubular string;a plurality of magnets, each having at least one pole directed radially outward;wherein the plurality of magnets are located and oriented with respect to the body to form a magnetic pattern;wherein the plurality of magnets in a first magnetic pattern are operable to move a plurality of magnetic pins within a first downhole tool into an unlocked pattern, and wherein the plurality of magnets in a second magnetic pattern are operable to move a plurality of magnetic pins within a second downhole tool into an unlocked pattern, and wherein the first magnetic pattern is different from the second magnetic pattern. 2. The key of claim 1, wherein the body comprises a seal operable to seal the bore of the wellbore tubular string when the body is in place in the wellbore tubular string. 3. The key of claim 2, wherein the seal is configured to provide a pressure differential across the body and allow fluid pressure to provide longitudinal movement of the key in the wellbore tubular string. 4. The key of claim 2, wherein the seal is operable to shear upon application of a shearing force. 5. The key of claim 4, wherein the seal is configured to allow fluid flow around the body when the seal is sheared. 6. The key of claim 1, further comprising an activator located on the nose of the body operable to configure the plurality of magnets into a second magnetic pattern. 7. The key of claim 6, wherein the activator is configured to actuate in response to engaging a feature within the bore. 8. The key of claim 6, wherein the second magnetic pattern comprises a different longitudinal spacing of the plurality of magnets as compared to a longitudinal spacing of the plurality of magnets in the magnetic pattern. 9. The key of claim 6, wherein the second magnetic pattern comprises a different circumferential pattern of the plurality of magnets as compared to a circumferential pattern of the plurality of magnets in the magnetic pattern. 10. The key of claim 1, wherein the plurality of magnets are located on the body to align with corresponding magnetic pins within the downhole tool when the key is located in longitudinal proximity to the downhole tool, and wherein the plurality of magnets are magnetically oriented to magnetically interact with corresponding pins. 11. The key of claim 10, wherein magnetic interaction comprises one of the following: magnetic attraction, magnetic repulsion, or a combination of magnetic attraction and magnetic repulsion. 12. The key of claim 1, wherein the location of the plurality of magnets comprises one of the following: longitudinal spacing, circumferential spacing, or a combination of longitudinal and circumferential spacing. 13. The key of claim 1, wherein the body comprises a dart. 14. The key of claim 1, wherein the plurality of magnets are disposed longitudinally within the body. 15. The key of claim 1, wherein the plurality of magnets are disposed circumferentially within the body. 16. The key of claim 1, wherein the body is formed from a non-ferromagnetic material. 17. The key of claim 1, wherein the body comprises one or more of: copper, aluminum, a composite material, titanium, poly-ether-ether ketone (PEEK), polytetrafluoroethylene, a carbon-carbon composite, a phenolic compound, fiber glass, or any combination thereof. 18. The key of claim 1, further comprising a downhole tractor, wherein the body is coupled to the downhole tractor, and wherein the downhole tractor is configured to convey the body into the bore. 19. The key of claim 1, wherein the plurality of magnets are configured to be read by an electronic reader within the downhole tool when the key is located in longitudinal proximity to the downhole tool, and wherein the electronic reader is configured to selectively perform an action based on reading the magnetic pattern of the plurality of magnets.
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이 특허에 인용된 특허 (4)
Telfer George,GBX, Activating means for a down-hole tool.
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