Vortex controlled variable flow resistance device and related tools and methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-028/00
E21B-007/00
F15D-001/00
E21B-033/12
E21B-007/24
E21B-023/04
출원번호
US-0110696
(2011-05-18)
등록번호
US-9212522
(2015-12-15)
발명자
/ 주소
Schultz, Roger L.
Connell, Michael L.
Ferguson, Andrew M.
출원인 / 주소
Thru Tubing Solutions, Inc.
대리인 / 주소
Lee, Mary M.
인용정보
피인용 횟수 :
1인용 특허 :
44
초록▼
A vortex-controlled variable flow resistance device ideal for use in a backpressure tool for advancing drill string in extended reach downhole operations, especially in horizontal wells. The shape, frequency and duration of the pressure waves generated by the device are controlled by the growth and
A vortex-controlled variable flow resistance device ideal for use in a backpressure tool for advancing drill string in extended reach downhole operations, especially in horizontal wells. The shape, frequency and duration of the pressure waves generated by the device are controlled by the growth and decay of vortices in the vortex chamber(s) of a flow path. The flow path includes a switch, such as a bi-stable fluidic switch, for reversing the direction of the flow in the vortex chamber. The flow path may include multiple vortex chambers, and the device may include multiple flow paths, through which flow may be parallel or sequential. This device generates backpressures of short duration and slower frequencies approaching the resonant frequency of the drill string, which maximizes axial motion in the drill string and weight on the bit. Additionally, fluid pulses produced by the tool enhance debris removal ahead of the bit.
대표청구항▼
1. A downhole tool comprising a tool housing, wherein the tool comprises an insert captured inside the tool housing, wherein the insert defines four flow paths arranged circumferentially and so that fluid flows through the flow paths in parallel, wherein the insert comprises an elongate tubular stru
1. A downhole tool comprising a tool housing, wherein the tool comprises an insert captured inside the tool housing, wherein the insert defines four flow paths arranged circumferentially and so that fluid flows through the flow paths in parallel, wherein the insert comprises an elongate tubular structure with an upper flow transmitting section and a lower flow path section, wherein the tool further comprises a retrievable plug that diverts fluid through the four flow paths in the insert, wherein the plug comprises a upper plug member, a lower plug member, and a connecting rod therebetween, wherein the upper flow transmitting section comprises an open upper end with external splines and is sized to sealingly receive the upper plug member, and wherein the upper flow transmitting section further comprises sidewall extending from the upper end, the sidewall having flow passages therethrough, wherein the circumferentially arranged flow paths in the flow path section define an open center continuous with the inlets and the outlets of the flow paths and with the flow passages of the connection section, wherein the open center of the flow path section is sized to sealingly receive the lower plug member between the inlets and the outlets of the flow paths, whereby when the plug is received in the insert, fluid flow entering the tool flows between the external splines, through the flow passages in the sidewall, then into the inlets of each of the flow passages, and then out the outlets of the flow passage. 2. A method for running a drill string with a bottom hole assembly into a borehole, the method comprising: running the drill string into the borehole;wherein the bottom hole assembly comprises a backpressure tool, wherein the backpressure tool comprises a vortex-controlled variable flow resistance device and a retrievable plug, wherein the retrievable plug directs fluid through the vortex-controlled variable flow resistance device so that removal of the retrievable plug deactivates the backpressure tool;operating the backpressure tool in the bottom hole assembly to reduce frictional engagement between the drill string and the borehole; andafter operating the backpressure tool, retrieving the plug from the backpressure tool. 3. The method of claim 2 further comprising: after retrieving the plug from the backpressure tool, flowing well fluid through the bottom hole assembly. 4. The method of claim 3 further comprising: after flowing well fluid through the bottom hole assembly, replacing the plug in the backpressure device and then repeating the step of operating the backpressure tool. 5. The method of claim 2 further comprising: after retrieving the plug from the backpressure tool, passing another tool down the drill string and through the backpressure tool. 6. The method of claim 5 further comprising: after passing another tool down the drill string and through the backpressure tool, flowing well fluid through the bottom hole assembly. 7. The method of claim 2 wherein the operating step comprises pumping a multi-phase well fluid through the drill string and wherein the well fluid comprises nitrogen gas in excess of at least about 100 standard cubic feet of gas per barrel. 8. The method of claim 2 wherein the operating step comprises pumping a multi-phase well fluid through the drill string and wherein the well fluid comprises nitrogen gas in excess of at least about 300 standard cubic feet of gas per barrel. 9. The method of claim 2 wherein the operating step comprises pumping a multi-phase well fluid through the drill string and wherein the well fluid comprises nitrogen gas in excess of at least about 500 standard cubic feet of gas per barrel. 10. The method of claim 2 wherein the operating step comprises pumping a multi-phase well fluid through the drill string and wherein the well fluid comprises nitrogen gas in excess of at least about 1000 standard cubic feet of gas per barrel. 11. The method of claim 2 wherein the bottom hole assembly comprises a bit. 12. The method of claim 11 wherein the bottom hole assembly further comprises a motor.
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이 특허에 인용된 특허 (44)
Schultz,Roger L.; Michael,Robert K.; Dagenais,Pete C.; Fripp,Michael L.; Tucker,James C., Apparatus and method for creating pulsating fluid flow, and method of manufacture for the apparatus.
Ayers David L. (Churchill Boro PA) Wright Terry (Birmingham AL) Skriba Michael C. (Plum Boro PA), Method and apparatus for providing oscillating contaminant-removal stream.
Ferguson, Andrew M.; Loving, Stanley Wayne; McKinley, Bryan Franklin; Norman, Dale, Methods and devices for one trip plugging and perforating of oil and gas wells.
Bragg Gordon M. (Waterloo CAX) Carothers Richard G. (Puslinch CAX) MacLeod Kenneth A. (Newmarket MN CAX) Nelson Marvin D. (Hennepin MN), Vortex valve flow controller in VAV systems.
Ferguson, Andrew M.; Loving, Stanley W.; McKinley, Bryan F.; Norman, Dale, Methods and devices for one trip plugging and perforating of oil and gas wells.
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