IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0704849
(2015-05-05)
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등록번호 |
US-9617849
(2017-04-11)
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발명자
/ 주소 |
- Logan, Aaron W.
- Switzer, David A.
- Logan, Justin C.
- Liu, Jili
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출원인 / 주소 |
- Evolution Engineering Inc.
|
대리인 / 주소 |
Seed Intellectual Property Law Group LLP
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
77 |
초록
▼
A fluid pressure pulse generator comprising a stator and rotor that can be used in measurement while drilling using mud pulse or pressure pulse telemetry is disclosed. The stator comprises a stator body with a circular opening therethrough and the rotor comprises a circular rotor body rotatably rece
A fluid pressure pulse generator comprising a stator and rotor that can be used in measurement while drilling using mud pulse or pressure pulse telemetry is disclosed. The stator comprises a stator body with a circular opening therethrough and the rotor comprises a circular rotor body rotatably received in the circular opening of the stator body. One of the stator body or the rotor body comprises one or more than one fluid opening for flow of fluid therethrough and the other of the stator body or the rotor body comprises one or more than one full flow chamber. The rotor is rotatable between a full flow configuration whereby the full flow chamber and the fluid opening align so that fluid flows from the full flow chamber through the fluid opening, and a reduced flow configuration whereby the full flow chamber and the fluid opening are not aligned. The flow of fluid through the fluid opening in the reduced flow configuration is less than the flow of fluid through the fluid opening in the full flow configuration thereby generating a fluid pressure pulse.
대표청구항
▼
1. A dual flow fluid pressure pulse generator comprising: (a) a stator comprising a stator body with a circular opening therethrough: and(b) a rotor comprising a circular rotor body rotatably received in the circular opening of the stator body, wherein the rotor body comprises one or more low flow f
1. A dual flow fluid pressure pulse generator comprising: (a) a stator comprising a stator body with a circular opening therethrough: and(b) a rotor comprising a circular rotor body rotatably received in the circular opening of the stator body, wherein the rotor body comprises one or more low flow fluid openings and one or more high flow fluid openings for flow of fluid therethrough, a flow area of each low flow fluid opening being less than a flow area of each high flow fluid opening, and the stator body comprises one or more full flow chambers, wherein the rotor is rotatable in:(i) a high flow mode where each high flow fluid opening moves in and out of fluid communication with the one or more full flow chambers to generate high flow fluid pressure pulses; and(ii) a low flow mode where each low flow fluid opening moves in and out of fluid communication with the one or more full flow chambers to generate low flow fluid pressure pulses,wherein each one of the high flow fluid openings is fluidly coupled to a corresponding high flow curved depression on an external surface of the rotor body via a corresponding high flow channel in the external surface of the rotor body whereby the corresponding high flow curved depression is configured to direct fluid through the one high flow fluid opening, and each one of the low flow fluid openings is fluidly coupled to a corresponding low flow curved depression on an external surface of the rotor body via a corresponding low flow channel in the external surface of the rotor body whereby the corresponding low flow curved depression is configured to direct fluid through the one low flow fluid opening. 2. The dual flow fluid pressure pulse generator as claimed in claim 1, wherein a flow area of the corresponding low flow channel is less than a flow area of the corresponding high flow channel. 3. A dual flow fluid pressure pulse generator comprising: (a) a stator comprising a stator body with a circular opening therethrough: and(b) a rotor comprising a circular rotor body rotatably received in the circular opening of the stator body, wherein the rotor body comprises one or more low flow fluid openings and one or more high flow fluid openings for flow of fluid therethrough, a flow area of each low flow fluid opening being less than a flow area of each high flow fluid opening, and the stator body comprises one or more full flow chambers, wherein the rotor is rotatable in:(i) a high flow mode where each high flow fluid opening moves in and out of fluid communication with the one or more full flow chambers to generate high flow fluid pressure pulses; and(ii) a low flow mode where each low flow fluid opening moves in and out of fluid communication with the one or more full flow chambers to generate low flow fluid pressure pulses,wherein each one of the high flow fluid openings is fluidly coupled to a corresponding high flow curved depression on an external surface of the rotor body whereby the corresponding high flow curved depression is configured to direct fluid through the—one high flow fluid opening and is sloped and increases in depth from an end furthest from the one high flow fluid opening to an end closest to the one high flow fluid opening, and each one of the low flow fluid openings is fluidly coupled to a corresponding low flow curved depression on the external surface of the rotor body whereby the corresponding low flow curved depression is configured to direct fluid through the one low flow fluid opening and the corresponding low flow curved depression is sloped and increases in depth from an end furthest from the one low flow fluid opening to an end closest to the one low flow fluid opening,wherein the depth of the corresponding high flow curved depression is greater than the depth of the corresponding low flow curved depression. 4. A dual flow fluid pressure pulse generator comprising: (a) a stator comprising a stator body with a circular opening therethrough: and(b) a rotor comprising a circular rotor body rotatably received in the circular opening of the stator body, wherein the rotor body comprises one or more low flow fluid openings and one or more high flow fluid openings for flow of fluid therethrough, a flow area of each low flow fluid opening being less than a flow area of each high flow fluid opening, and the stator body comprises one or more full flow chambers, wherein the rotor is rotatable in:(i) a high flow mode where each high flow fluid opening moves in and out of fluid communication with the one or more full flow chambers to generate high flow fluid pressure pulses; and(ii) a low flow mode where each low flow fluid opening moves in and out of fluid communication with the one or more full flow chambers to generate low flow fluid pressure pulses,wherein each one of the high flow fluid openings is fluidly coupled to a corresponding high flow curved depression on an external surface of the rotor body whereby the corresponding high flow curved depression is configured to direct fluid through the one high flow fluid opening and is sloped and increases in depth from an end furthest from the one high flow fluid opening to an end closest to the one high flow fluid opening, and each one of the low flow fluid openings is fluidly coupled to a corresponding low flow curved depression on the external surface of the rotor body whereby the corresponding low flow curved depression is configured to direct fluid through the one low flow fluid opening and the corresponding low flow curved depression is sloped and increases in depth from an end furthest from the one low flow fluid opening to an end closest to the one low flow fluid opening,wherein the corresponding high flow curved depression and corresponding low flow curved depressions are each shaped like a spoon head. 5. A dual flow fluid pressure pulse generator comprising: (a) a stator comprising a stator body with a circular opening therethrough: and(b) a rotor comprising a circular rotor body rotatably received in the circular opening of the stator body, wherein the rotor body comprises one or more low flow fluid openings and one or more high flow fluid openings for flow of fluid therethrough, a flow area of each low flow fluid opening being less than a flow area of each high flow fluid opening, and the stator body comprises one or more full flow chambers, wherein the rotor is rotatable in:(i) a high flow mode where each high flow fluid opening moves in and out of fluid communication with the one or more full flow chambers to generate high flow fluid pressure pulses; and(ii) a low flow mode where each low flow fluid opening moves in and out of fluid communication with the one or more full flow chambers to generate low flow fluid pressure pulses,wherein a corresponding leg section is positioned between each high flow opening and a corresponding low flow fluid opening with an edge of the corresponding leg section perpendicular to a direction of rotation of the rotor and a wall thickness of the edge of the corresponding leg section being less than a wall thickness of a middle part of the corresponding leg section. 6. A dual flow fluid pressure pulse generator comprising: (a) a stator comprising a stator body with a circular opening therethrough; and(b) a rotor comprising a circular rotor body rotatably received in the circular opening of the stator body,wherein one of the stator body or the rotor body comprises one or more low flow fluid openings and one or more high flow fluid openings for flow of fluid therethrough and the other of the stator body or the rotor body comprises one or more full flow chambers and one or more intermediate flow chambers each one with a flow area less than a flow area of each one of the full flow chambers, a flow area of each one of the low flow fluid openings being less than a flow area of each one of the high flow fluid openings, wherein the rotor is rotatable in a high flow mode between: (i) a high flow mode full flow configuration whereby each full flow chamber and each high flow fluid opening align so that fluid flows from each full flow chamber through each high flow fluid opening;(ii) a high flow mode reduced flow configuration whereby each full flow chamber and each high flow fluid opening are not aligned and the flow of fluid through each high flow fluid opening is less than the flow of fluid through each high flow fluid opening in the high flow mode full flow configuration thereby generating a first high flow fluid pressure pulse; and(iii) a high flow mode intermediate flow configuration whereby each intermediate flow chamber and each high flow fluid opening align so that fluid flows from each intermediate flow chamber through each high flow fluid opening, and the flow of fluid through each high flow fluid opening in the high flow mode intermediate flow configuration is less than the flow of fluid through each high flow fluid opening in the high flow mode full flow configuration but more than the flow of fluid through each high flow fluid opening in the high flow mode reduced flow configuration thereby generating a second high flow fluid pressure pulse which is reduced compared to the first high flow fluid pressure pulse; and wherein the rotor is rotatable in a low flow mode between: (i) a low flow mode full flow configuration whereby each full flow chamber and each low flow fluid opening align so that fluid flows from each full flow chamber through each low flow fluid opening;(ii) a low flow mode reduced flow configuration whereby each full flow chamber and each low flow fluid opening are not aligned and the flow of fluid through each low flow fluid opening is less than the flow of fluid through each low flow fluid opening in the low flow mode full flow configuration thereby generating a first low flow fluid pressure pulse; and(iii) a low flow mode intermediate flow configuration whereby each intermediate flow chamber and each low flow fluid opening align so that fluid flows from each intermediate flow chamber through each low flow fluid opening, and the flow of fluid through each low flow fluid opening in the low flow mode intermediate flow configuration is less than the flow of fluid through each low flow fluid opening in the low flow mode full flow configuration but more than the flow of fluid through each low flow fluid opening in the low flow mode reduced flow configuration thereby generating a second low flow fluid pressure pulse which is reduced compared to the first low flow fluid pressure pulse. 7. The dual flow fluid pressure pulse generator as claimed in claim 6, wherein the rotor body comprises the one or more low flow fluid openings and the one or more high flow fluid openings. 8. The dual flow fluid pressure pulse generator as claimed in claim 7, wherein each one of the high flow fluid openings is fluidly coupled to a corresponding high flow curved depression on an external surface of the rotor body whereby the corresponding high flow curved depression is configured to direct fluid through the one high flow fluid opening, and each one of the low flow fluid openings is fluidly coupled to a corresponding low flow curved depression on the external surface of the rotor body whereby the corresponding low flow curved depression is configured to direct fluid through the one low flow fluid opening. 9. The dual flow fluid pressure pulse generator as claimed in claim 8, wherein a flow area of the corresponding low flow curved depression is less than a flow area of the corresponding high flow curved depression. 10. The dual flow fluid pressure pulse generator as claimed in claim 8, wherein the corresponding high flow curved depression is sloped and increases in depth from an end furthest from the one high flow fluid opening to an end closest to the one high flow fluid opening, and the corresponding low flow curved depression is sloped and increases in depth from an end furthest from the one low flow fluid opening to an end closest to the one low flow fluid opening. 11. The dual flow fluid pressure pulse generator as claimed in claim 7, wherein the stator body comprises the one or more full flow chambers and further comprises one or more wall sections on an internal surface of the stator body whereby each high flow fluid opening aligns with one of the wall sections in the high flow mode reduced flow configuration and each low flow fluid opening aligns with one of the wall sections in the low flow mode reduced flow configuration. 12. The dual flow fluid pressure pulse generator as claimed in claim 11, wherein a portion of each full flow chamber is positioned behind one of the wall sections. 13. The dual flow fluid pressure pulse generator as claimed in claim 6 wherein a bottom surface of each full flow chamber is angled in the fluid flow direction for smooth flow of fluid from each full flow chamber to a corresponding high flow fluid opening or a corresponding low flow fluid opening. 14. The dual flow fluid pressure pulse generator as claimed in claim 6, wherein each one of the full flow chambers includes a corresponding bypass channel for flow of fluid through the one full flow chamber. 15. The dual flow fluid pressure pulse generator as claimed in claim 6, further comprises a deactivation zone configured to: block flow of fluid through each low flow fluid opening when the rotor is rotating in the high flow mode; andblock flow of fluid through each high flow fluid opening when the rotor is rotating in the low flow mode. 16. The dual flow fluid pressure pulse generator as claimed in claim 15, wherein the stator body comprises the one or more full flow chambers and the deactivation zone comprises a curved internal wall of the stator body. 17. The dual flow fluid pressure pulse generator as claimed in claim 6, wherein a bottom surface of each intermediate flow chamber is angled in the fluid flow direction for smooth flow of fluid from each intermediate flow chamber to a corresponding high flow fluid opening or a corresponding low flow fluid opening. 18. The dual flow fluid pressure pulse generator as claimed in claim 6, wherein each one of the intermediate flow chambers includes a corresponding bypass channel for flow of fluid through the one intermediate flow chamber. 19. A measurement while drilling tool comprising the dual flow fluid pressure pulse generator as claimed in claim 6 and a pulser assembly with a drive shaft, wherein the rotor of the dual flow fluid pressure pulse generator is fixed to the drive shaft for rotation thereby. 20. A rotor for a dual flow fluid pressure pulse generator, the rotor comprising a circular body with one or more low flow fluid openings and one or more high flow fluid openings for flow of fluid therethrough, a cross-sectional area of each one of the low flow fluid openings being less than a cross-sectional area of each one of the high flow fluid openings, wherein the one high flow fluid opening is fluidly coupled to a corresponding high flow curved depression on an external surface of the circular body whereby the corresponding high flow curved depression is configured to direct fluid through the one high flow fluid opening, and the one low flow fluid opening is fluidly coupled to a corresponding low flow curved depression on the external surface of the circular body whereby the corresponding low flow curved depression is configured to direct fluid through the one low flow fluid opening, further comprising a corresponding high flow channel in the external surface of the circular body fluidly connecting the corresponding high flow curved depression and the one high flow fluid opening, and a corresponding low flow channel in the external surface of the circular body fluidly connecting the corresponding low flow curved depression and the one low flow fluid opening. 21. The rotor as claimed in claim 20, wherein a flow area of the corresponding low flow channel is less than a flow area of the corresponding high flow channel. 22. A rotor for a dual flow fluid pressure pulse generator, the rotor comprising a circular body with one or more low flow fluid openings and one or more high flow fluid openings for flow of fluid therethrough, a cross-sectional area of each one of the low flow fluid openings being less than a cross-sectional area of each one of the high flow fluid openings, wherein the one high flow fluid opening is fluidly coupled to a corresponding high flow curved depression on an external surface of the circular body whereby the corresponding high flow curved depression is configured to direct fluid through the one high flow fluid opening and is sloped and increases in depth from an end furthest from the one high flow fluid opening to an end closest to the one high flow fluid opening, and the one low flow fluid opening is fluidly coupled to a corresponding low flow curved depression on an external surface of the circular body whereby the corresponding low flow curved depression is configured to direct fluid through the one low flow fluid opening and is sloped and increases in depth from an end furthest from the one low flow fluid opening to an end closest to the one low flow fluid opening, wherein the depth of the corresponding high flow curved depression is greater than the depth of the corresponding low flow curved depression. 23. A rotor for a dual flow fluid pressure pulse generator, the rotor comprising a circular body with one or more low flow fluid openings and one or more high flow fluid openings for flow of fluid therethrough, a cross-sectional area of each one of the low flow fluid openings being less than a cross-sectional area of each one of the high flow fluid openings, wherein the one high flow fluid opening is fluidly coupled to a corresponding high flow curved depression on an external surface of the circular body whereby the corresponding high flow curved depression is configured to direct fluid through the one high flow fluid opening and is sloped and increases in depth from an end furthest from the one high flow fluid opening to an end closest to the one high flow fluid opening, and the one low flow fluid opening is fluidly coupled to a corresponding low flow curved depression on an external surface of the circular body whereby the corresponding low flow curved depression is configured to direct fluid through the one low flow fluid opening and is sloped and increases in depth from an end furthest from the one low flow fluid opening to an end closest to the one low flow fluid opening, wherein the corresponding high flow curved depression and the corresponding low flow curved depressions are each shaped like a spoon head. 24. A rotor for a dual flow fluid pressure pulse generator, the rotor comprising a circular body with one or more low flow fluid openings and one or more high flow fluid openings for flow of fluid therethrough, a cross-sectional area of each one of the low flow fluid openings being less than a cross-sectional area of each one of the high flow fluid openings, wherein the circular body comprises a corresponding leg sections positioned between one high flow fluid opening and one low flow fluid openings with an edge of the corresponding leg section perpendicular to a direction of rotation of the rotor, a wall thickness of the edge of the corresponding leg section being less than a wall thickness of a middle part of the corresponding leg section. 25. The rotor as claimed in claim 24, wherein the one high flow fluid opening is fluidly coupled to a corresponding high flow curved depression on an external surface of the circular body whereby the corresponding high flow curved depression is configured to direct fluid through the one high flow fluid opening, and the one low flow fluid opening is fluidly coupled to a corresponding low flow curved depression on the external surface of the circular body whereby the corresponding low flow curved depression is configured to direct fluid through the one low flow fluid opening. 26. The rotor as claimed in claim 25, wherein a flow area of the corresponding low flow curved depression is less than a flow area of the corresponding high flow curved depression. 27. The rotor as claimed in claim 25, wherein the corresponding high flow curved depression is sloped and increases in depth from an end furthest from the one high flow fluid opening to an end closest to the one high flow fluid opening, and the corresponding low flow curved depression is sloped and increases in depth from an end furthest from the one low flow fluid opening to an end closest to the one low flow fluid opening. 28. A measurement while drilling tool comprising a pulser assembly with a drive shaft and the rotor as claimed in claim 24 fixed to the drive shaft for rotation thereby.
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