[특허]Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well

Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-034/08
출원번호	US-0904777 (2013-05-29)
등록번호	US-9394759 (2016-07-19)
발명자 / 주소	Fripp, Michael L. Dykstra, Jason D.
출원인 / 주소	Halliburton Energy Services, Inc.
대리인 / 주소	Locke Lord LLP
인용정보	피인용 횟수 : 0 인용 특허 : 107

초록 ▼

A method of propagating pressure pulses in a well can include flowing a fluid composition through a variable flow resistance system which includes a vortex chamber having at least one inlet and an outlet, a vortex being created when the fluid composition spirals about the outlet, and a resistance to flow of the fluid composition alternately increasing and decreasing. The vortex can be alternately created and dissipated in response to flowing the fluid composition through the system. A well system can include a variable flow resistance system which propagates pressure pulses into a formation in response to flow of a fluid composition from the formation.

대표청구항 ▼

1. A method of propagating pressure pulses in a subterranean well, the method comprising: flowing a fluid composition through at least one variable flow resistance system which includes: at least one inlet;a vortex chamber downstream of the at least one inlet and in fluid communication with the at least one inlet via at least a first and a second flow passages; andan outlet in fluid communication with the vortex chamber, wherein a vortex is created when the fluid composition flows spirally about the outlet when a vortex proportion of flow through the first flow passage relative to the second flow passage exists, wherein the vortex is dissipated when a dissipation proportion of flow through the second flow passage relative to the first passage exists; andwherein flowing the fluid composition through the at least one variable flow resistance system includes allowing the fluid composition to flow through at least the first and the second flow passages to alternatingly create and dissipate the vortex such that the vortex chamber alternatingly increases and decreases a resistance to flow of the fluid composition through the vortex chamber. 2. The method of claim 1, wherein the pressure pulses are propagated upstream from the variable flow resistance system when the flow resistance alternately increases and decreases. 3. The method of claim 1, wherein the pressure pulses are propagated downstream from the variable flow resistance system when the flow resistance alternately increases and decreases. 4. The method of claim 1, wherein the pressure pulses are propagated from the variable flow resistance system into a subterranean formation when the flow resistance alternately increases and decreases. 5. The method of claim 1, wherein the pressure pulses are propagated through a gravel pack when the flow resistance alternately increases and decreases. 6. The method of claim 1, wherein the step of flowing the fluid composition further comprises flowing the fluid composition from a subterranean formation into a wellbore. 7. The method of claim 6, wherein the step of flowing the fluid composition further comprises flowing the fluid composition from the wellbore into a tubular string via the variable flow resistance system. 8. The method of claim 1, wherein the flow resistance alternately increases and decreases when a characteristic of the fluid composition is within a predetermined range. 9. The method of claim 8, wherein the characteristic comprises a viscosity of the fluid composition. 10. The method of claim 8, wherein the characteristic comprises a velocity of the fluid composition. 11. The method of claim 8, wherein the characteristic comprises a density of the fluid composition. 12. The method of claim 8, wherein the flow resistance alternately increases and decreases only when the characteristic of the fluid composition is within the predetermined range. 13. The method of claim 1, wherein the flow resistance alternately increases and decreases when a ratio of desired to undesired fluid in the fluid composition is within a predetermined range. 14. The method of claim 1, wherein the step of flowing the fluid composition through the variable flow resistance system further comprises flowing multiple fluid compositions through respective multiple variable flow resistance systems, and further comprising the step of detecting which of the variable flow resistance systems have flow resistances which alternately increase and decrease in response to flow of the respective fluid composition.

이 특허에 인용된 특허 (107)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well 원문보기

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Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well 원문보기

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