IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0513807
(2007-11-09)
|
등록번호 |
US-8156799
(2012-04-17)
|
국제출원번호 |
PCT/US2007/084329
(2007-11-09)
|
§371/§102 date |
20090506
(20090506)
|
국제공개번호 |
WO2008/061033
(2008-05-22)
|
발명자
/ 주소 |
- Maute, Robert E.
- Sidhwa, Feroze
|
출원인 / 주소 |
- REM Scientific Enterprises, Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
32 |
초록
▼
Fluid flow measurement device and method. In one embodiment, a tool comprises a rotating arm with a sensor pad to measure fluid flow into or out of the casing wall. The arm maintains the sensor pad in close proximity to the casing inner wall. The tool diameter is variable to allow the tool to traver
Fluid flow measurement device and method. In one embodiment, a tool comprises a rotating arm with a sensor pad to measure fluid flow into or out of the casing wall. The arm maintains the sensor pad in close proximity to the casing inner wall. The tool diameter is variable to allow the tool to traverse variable diameter casings and pass obstacles. The sensor pad comprises flow channels to direct the flow of fluid by electromagnetic sensors configured to detect conductive fluid flow.
대표청구항
▼
1. A logging tool for a borehole, the logging tool comprising: a tool body having a long axis;a sensor pad having a pad long axis parallel to the tool body long axis;an arm assembly coupling the sensor pad to the tool body, wherein the arm assembly is pivotably attached to the tool body, wherein a p
1. A logging tool for a borehole, the logging tool comprising: a tool body having a long axis;a sensor pad having a pad long axis parallel to the tool body long axis;an arm assembly coupling the sensor pad to the tool body, wherein the arm assembly is pivotably attached to the tool body, wherein a pivot axis of the arm assembly is orthogonal to the long axis of the tool body, and wherein the sensor pad is movable radially inward toward or outward from the tool body as the arm assembly is pivoted on the pivot axis; anda first stationary tool segment;a rotatable tool segment; anda first rotary joint coupling a first end of the rotatable tool segment to a first end of the first stationary tool segment, wherein the rotatable tool segment is azimuthally rotatable around the long axis of the tool body with respect to the first stationary tool segment, and wherein the arm assembly is mounted on the rotatable tool segment. 2. The logging tool of claim 1, wherein the tool body further comprises a motor for rotating the rotatable tool segment with respect to the first stationary tool segment. 3. The logging tool of claim 1, wherein the rotary joint further comprises one or more slip rings for connecting electrical signals from the sensor pad to the stationary tool segment. 4. The logging tool of claim 1, wherein the rotatable tool segment further comprises a hollowed region, wherein the arm assembly is pivotable into the hollowed region as the arm assembly is pivoted on the pivot axis. 5. The logging tool of claim 4, wherein the sensor pad is pivotable into the hollowed region as the arm assembly is pivoted on the pivot axis. 6. The logging tool of claim 1, further comprising one or more first centralizers disposed on the first stationary tool segment. 7. The logging tool of claim 1, wherein the tool body further comprises: a second stationary tool segment; anda second rotary joint coupling a second end, opposite the first end, of the rotatable tool segment to a first end of the second stationary tool segment. 8. The logging tool of claim 7, further comprising one or more second centralizers disposed on the second stationary tool segment. 9. The logging tool of claim 1, wherein the arm assembly further comprises: a first arm having a first end pivotably coupled to the tool body and a second end coupled to the sensor pad; anda second arm having a first end pivotably coupled to the tool body and a second end coupled to the sensor pad. 10. The logging tool of claim 9, wherein the second ends of the first and second arms are pivotably coupled to the sensor pad. 11. The logging tool of claim 9, wherein a first vertical angle between the first arm and the tool body is between about 15 and about 45 degrees. 12. The logging tool of claim 11, wherein a second vertical angle between the second arm and the tool body is substantially the same in magnitude and direction as the first vertical angle. 13. The logging tool of claim 9, wherein the first arm and the second arm are each coupled to the tool body by a pivot joint. 14. The logging tool of claim 9, wherein the arm assembly further comprises a long arm having a first end coupled to the tool body and a second end coupled to the second end of the second arm, and wherein the long arm and tool body form a first acute angle facing a second acute angle formed between the second arm and the tool body. 15. The logging tool of claim 14, wherein the first acute angle between the long arm and the tool body is between about 0 and about 10 degrees. 16. The logging tool of claim 14, wherein the long arm is coupled to the tool body by a slot and pin connection. 17. The logging tool of claim 1, wherein the sensor pad further comprises: a sensor housing; anda fluid flow sensor disposed within the sensor housing, wherein the sensor is oriented to measure radial fluid flow. 18. The logging tool of claim 17, wherein the sensor housing has a rounded face disposed radially outward from the tool body. 19. The logging tool of claim 18, wherein the sensor housing further comprises two or more ball rollers disposed on the sensor face. 20. The logging tool of claim 17, wherein the sensor pad further comprises a radial flow channel proximate the fluid flow sensor. 21. The logging tool of claim 17, wherein a length of a sensing area of the sensor pad is between about 3 and about 10 inches. 22. A logging tool for a borehole, the logging tool comprising: a tool body having a long axis;a sensor pad having a pad long axis parallel to the tool body long axis;an arm assembly coupling the sensor pad to the tool body, wherein the arm assembly is pivotably attached to the tool body, wherein a pivot axis of the arm assembly is orthogonal to the long axis of the tool body,wherein the sensor pad is movable radially inward toward or outward from the tool body as the arm assembly is pivoted on the pivot axis,wherein the arm assembly further comprises a first arm having a first end pivotably coupled to the tool body and a second end coupled to the sensor pad, and a second arm having a first end pivotably coupled to the tool body and a second end coupled to the sensor pad, andwherein a first vertical angle between the first arm and the tool body has a substantially same magnitude and direction as second vertical angle between the second arm and the tool body. 23. The logging tool of claim 22, further comprising: a first stationary tool segment;a rotatable tool segment; anda first rotary joint coupling a first end of the rotatable tool segment to a first end of the first stationary tool segment, wherein the rotatable tool segment is azimuthally rotatable around the long axis of the tool body with respect to the first stationary tool segment, and wherein the arm assembly is mounted on the rotatable tool segment. 24. The logging tool of claim 22, wherein the rotary joint further comprises one or more slip rings for connecting electrical signals from the sensor pad to the stationary tool segment. 25. The logging tool of claim 22, wherein the rotatable tool segment further comprises a hollowed region, wherein the arm assembly is pivotable into the hollowed region as the arm assembly is pivoted on the pivot axis. 26. The logging tool of claim 25, wherein the sensor pad is pivotable into the hollowed region as the arm assembly is pivoted on the pivot axis. 27. The logging tool of claim 22, further comprising one or more first centralizers disposed on the first stationary tool segment. 28. The logging tool of claim 22, wherein the tool body further comprises: a second stationary tool segment; anda second rotary joint coupling a second end, opposite the first end, of the rotatable tool segment to a first end of the second stationary tool segment. 29. The logging tool of claim 22, further comprising one or more second centralizers disposed on the second stationary tool segment. 30. The logging tool of claim 22, wherein the second ends of the first and second arms are pivotably coupled to the sensor pad. 31. The logging tool of claim 22, wherein the first and second vertical angles are between about 15 and about 45 degrees. 32. The logging tool of claim 22, wherein the first arm and the second arm are each coupled to the tool body by a pivot joint. 33. The logging tool of claim 22, wherein the arm assembly further comprises a long arm having a first end coupled to the tool body and a second end coupled to the second end of the second arm, and wherein the long arm and tool body form a first acute angle facing a second acute angle formed between the second arm and the tool body. 34. The logging tool of claim 33, wherein the first acute angle between the long arm and the tool body is between about 0 and about 10 degrees. 35. The logging tool of claim 33, wherein the long arm is coupled to the tool body by a slot and pin connection. 36. The logging tool of claim 22, wherein the sensor pad further comprises: a sensor housing; anda fluid flow sensor disposed within the sensor housing, wherein the sensor is oriented to measure radial fluid flow. 37. The logging tool of claim 36, wherein the sensor housing has a rounded face disposed radially outward from the tool body. 38. The logging tool of claim 37, wherein the sensor housing further comprises two or more ball rollers disposed on the sensor face. 39. The logging tool of claim 36, wherein the sensor pad further comprises a radial flow channel proximate the fluid flow sensor. 40. The logging tool of claim 36, wherein a length of a sensing area of the sensor pad is between about 3 and about 10 inches. 41. The logging tool of claim 23, wherein the tool body further comprises a motor for rotating the rotatable tool segment with respect to the first stationary tool segment.
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