Claims
- 1. A well logging apparatus adapted to be moved inside a borehole, the apparatus comprising a tool having an elongate body, a measuring pad adapted to contact the wall of the borehole, a support device for the pad mounted pivotally on one side of the body, the pad braced at the upper end via an upper link connected by a slideable pivot pin in a receiving oval slot, with the support device for the pad further comprising an arm which predominantly carries the full weight of the pad relative to the body by means of a moveable hinge connection or a dual lateral pivot type of fork connection formed with the pad at the lower end of the arm and a fixed pivot connection formed with the body at the upper end of the arm, where the lower end of the arm is connected to the pad substantially in a central part thereof, and wherein the support device also comprises means for applying the pad against the wall of the borehole while the tool is moved inside the borehole to permit reliable real time, continuous measurements of borehole properties during movement of the apparatus and tool through the borehole.
- 2. An apparatus according to claim 1, wherein said arm is connected to the pad in a region located in the lower half thereof.
- 3. An apparatus according to claim 1, wherein said arm is connected to the pad by a pivotal joint.
- 4. An apparatus according to claim 1, wherein said arm is connected to the pad on the face thereof opposite the contact face.
- 5. An apparatus according to claim 1, wherein the support device further comprises a pivotal link connected to the upper part of the pad and arranged to limit the inclination of the pad relative to the axis of the body.
- 6. An apparatus according to claim 5, wherein said pivotal link has a length such that the pad remains applied against the wall of the borehole when the borehole has a hollow.
- 7. An apparatus according to claim 5, wherein the pivotal link has a member engaging in a slot formed in the upper part of the pad.
- 8. An apparatus according to claim 6, wherein the pivotal link has a member engaging in a slot formed in the upper part of the pad.
- 9. A combination well logging device comprising first, second and third sections mounted end to end in an initial substantially vertical manner, the second section being connected to the first and third sections by respective hinges allowing the second section to assume an angle of inclination relative to the initial substantially vertical orientation of the first and second sections, the second section comprising apparatus having an elongate body, a measuring pad adapted to contact the wall of the borehole, a support device for the pad mounted pivotally on one side of the body comprising an arm which carries the weight of the pad and is connected to the pad substantially in a central part thereof, and means for applying the pad against the wall of the borehole while the tool is moved inside the borehole to permit reliable real time, continuous measurements of borehole properties during movement of the device through the borehole.
- 10. A device according to claim 9, wherein said inclination angle is restrained to be within a certain specified maximum range of allowed swing on a predetermined longitudinal plane related to an adjacent section.
- 11. A device according to claim 9, wherein said arm is connected to the pad in a region located in the lower half thereof.
- 12. A device according to claim 9, wherein said arm is connected to the pad by a pivotal joint.
- 13. A device according to claim 9, wherein said arm is connected to the pad on the face thereof opposite the contact face.
- 14. A device according to claim 9, wherein the support device further comprises a pivotal link connected to the upper part of the pad and arranged to limit the inclination of the pad relative to the axis of the body.
- 15. A device according to claim 9, wherein said pivotal link has a length such that the pad remains applied against the wall of the borehole when the borehole has a hollow.
- 16. An apparatus according to claim 9, wherein the pivotal link has a member engaging in a slot formed in the upper part of the pad.
- 17. An apparatus according to claim 9, wherein the pivotal link has a member engaging in a slot formed in the upper part of the pad.
- 18. A device according to claim 9, wherein said inclination angle is restrained to be within and swing within a predetermined longitudinal plane related to an adjacent section.
- 19. A device according to claim 9, wherein the first section is adapted to be applied against the wall of the borehole, while the third section is adapted to remain spaced apart along its full length from said wall.
- 20. A device according to claim 18, wherein the first section is adapted to be applied against the wall of the borehole, while the third section is adapted to remain spaced apart along its full length from said wall.
Priority Claims (1)
Number |
Date |
Country |
Kind |
93 11895 |
Oct 1993 |
FRX |
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Parent Case Info
This application is a file wrapper continuation of parent application Ser. No. 08/316,267, filed Sep. 30, 1994.
US Referenced Citations (15)
Foreign Referenced Citations (1)
Number |
Date |
Country |
93 04229 |
Apr 1993 |
FRX |
Continuations (1)
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Number |
Date |
Country |
Parent |
316267 |
Sep 1994 |
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