Claims
- 1. An assembly comprising:a retrieving tool including a hook member; a deflecting tool including a slot and an uphole end, the deflecting tool having a body defining a side surface to generally face a casing wall; the hook member selectively insertable and engageable within the slot, the hook member having a ramping surface; and the slot of the deflecting tool having an edge adapted to slide on the ramping surface of the hook member, the ramping surface generally facing the side surface of the deflecting tool once the hook member is positioned through the slot the deflecting tool uphole end being lifted away from a segment of the casing wall as the edge of the slot slides on the ramping surface.
- 2. The assembly of claim 1 wherein:the edge of the slot is adapted to ramp on the ramping surface as the hook member is inserted and engaged within the slot and the retrieving tool is retrieved; and wherein a ramping motion of the edge on the ramping surface causes the deflecting tool uphole end to be lifted away from the casing wall segment.
- 3. The assembly of claim 1, wherein the body defines another side surface, the slot extending through the body between the side surfaces.
- 4. The assembly of claim 3, wherein the slot extends from a first opening in one of the side surfaces to a second opening in the other one of the side surfaces.
- 5. The assembly of claim 1, wherein the slot has another edge adapted to slide on the ramping surface of the hook member.
- 6. The assembly of claim 1, wherein the hook member has a first section and a second section, the second section providing the ramping surface,wherein the ramping surface has an uphole end that extends farther uphole than an uphole end of the first section.
- 7. The assembly of claim 6, wherein the first section has tapered surfaces, andwherein the slot has a wedge-section having wedge section surfaces, the first section tapered surfaces adapted to contact the wedge section surfaces when the hook member is inserted and engaged within the slot.
- 8. The assembly of claim 1, wherein the hook member has a surface adapted to engage the casing wall.
- 9. The assembly of claim 1, wherein the retrieving tool has a hydraulic signature mechanism adapted to indicate if the retrieving tool hook member is positioned proximate the slot of the deflecting tool.
- 10. The assembly of claim 9, wherein the hydraulic signature mechanism comprises a hydraulic port through which fluid is adapted to flow,a change in pressure of the fluid to indicate that the hook member is positioned proximate the slot.
- 11. The assembly of claim 10 wherein the hydraulic signature mechanism has at least another hydraulic port.
- 12. The assembly of claim 1, wherein the hook member has a distal end, and the retrieving tool has a side laterally opposite the hook member distal end,wherein the distance between the hook member distal end and the retrieving tool side is slightly smaller than a drift diameter of the casing.
- 13. The assembly of claim 1, wherein the hook member has a longitudinal axis,wherein the retrieving tool has a first perpendicular axis extending from the longitudinal axis so that a plane including the first perpendicular axis is perpendicular and transverse to the longitudinal axis of the hook member, and the retrieving tool has a second perpendicular axis extending from the longitudinal axis, the second perpendicular axis being perpendicular to the first perpendicular axis, and wherein a moment of inertia with respect to the second perpendicular axis is substantially greater than a moment of inertia with respect to the first perpendicular axis.
- 14. The assembly of claim 13, wherein the moment of inertia with respect to the second perpendicular axis is at least three times greater than the moment of inertia with respect to the first perpendicular axis.
- 15. The assembly of claim 1, wherein the retrieving tool further has a cleaning mechanism including at least one port, each port extending through the hook member.
- 16. The assembly of claim 1, wherein the retrieving tool has a port and a pressure gauge operatively coupled to the retrieving tool port to monitor a pressure of fluid therein.
- 17. A method for retrieving a deflecting tool by use of a retrieving tool, comprising:running the retrieving tool to the location of the deflecting tool; engaging a hook member of the retrieving tool to a slot of the deflecting tool, the deflecting tool having a body defining a side surface generally facing a casing wall; providing a ramping surface on the hook member of the retrieving tool, the ramping surface generally facing the side surface of the body once the hook member is inserted through the slot; sliding an edge of the slot on the ramping surface as the retrieving tool hook member is engaged in the slot; and lifting the uphole end of the deflecting tool away from a segment of the casing wall as the edge of the slot slides on the ramping surface.
- 18. The method of claim 17, wherein the body defines another side surface, the method further comprising extending the slot through the body between the side surfaces.
- 19. The method of claim 17, further comprising sliding another edge of the slot on the ramping surface.
- 20. The method of claim 17, wherein the hook member has a first section and a second section, the second section providing the ramping surface, the method further comprising extending an uphole end of the ramping surface farther uphole than an uphole end of the first section.
- 21. The method of claim 20, further comprising:providing tapered surfaces on the first section; providing a wedge section having wedge section surfaces in the slot; and contacting the first section tapered surfaces to the wedge section surfaces when the hook member is inserted and engaged within the slot.
- 22. The method of claim 17, further comprising:providing a hydraulic signature mechanism having a hydraulic port through which fluid flows; and monitoring a pressure of the fluid to determine if the hook member is positioned proximate the slot.
- 23. An assembly comprising:a retrieving tool including a hook member, the hook member including a first section having tapered surfaces; a deflecting tool including a slot, the slot including a wedge section having wedge section surfaces; the hook member selectively insertable and engageable within the slot; and the first section tapered surfaces contacting the wedge section surfaces when the hook member is inserted and engaged within the slot.
- 24. The assembly of claim 23 wherein:the taper angle of the first section tapered surfaces matches the angle defined by the wedge section surfaces.
- 25. A method for retrieving a deflecting tool including a slot by use of a retrieving tool including a hook member, the hook member including a first section having tapered surfaces and the slot including a wedge section having wedge section surfaces, the method comprising:running the retrieving tool to the location of the deflecting tool; and engaging the first section tapered surfaces with the wedge section surfaces.
Parent Case Info
This application is a continuation-in-part and claims priority of U.S. patent application Ser. No. 09/293,821 filed by Ohmer on Apr. 16, 1999, now U.S. Pat. No. 6,209,645.
US Referenced Citations (28)
Non-Patent Literature Citations (1)
Entry |
Defourny, P.M. and Abbassian, Fereidoun: Flexible Bit: A New Antivibration PDC-Bit Concept; SPE Drilling & Completion; Dec. 1998; p. 237-242. |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/293821 |
Apr 1999 |
US |
Child |
09/521741 |
|
US |