Claims
- 1. An anchoring sub for use with hydrocarbon exploration and production tools within a wellbore comprising:
an elongated mandrel having a first end and a second end and an outer surface connecting the first end to the second end; a slip assembly disposed along the outer surface of the mandrel between the first end and the second end, the slip assembly comprising at least one pin, at least one drag block, and at least one rocker slip; a slip cone secured to the outer surface of the mandrel between the first end and the second end where the slip cone is engageable by the slip assembly to urge the slip assembly outward and securedly contact the inner surface of the wellbore; and a slotted sleeve disposed along the outer surface of the mandrel between the slip cone and the second end of the mandrel, where the slotted sleeve includes a series of vertical slots circumscribing said slotted sleeve, where the pin is secured to the slip assembly and is travelable within said vertical slots and can be selectively positioned within said vertical slots thereby providing vertical travel of the slip assembly up and down the outer surface of the mandrel, where positioning the pin within a first slot provides engaging contact of the slip assembly with the slip cone and positioning the pin within a second slot provides for placing the slip assembly in a pick up position, and where positioned said pin within said first position provides for said anchoring sub to be upwardly motivated within the wellbore and provides for reengagement of the slip assembly with the slip cone when the anchoring sub is downwardly motivated.
- 2. The anchoring sub of claim 1 further comprising a wireline connection at its first end and second end thereby providing wireline communication through said anchoring sub.
- 3. The anchoring sub of claim 1 where its vertical orientation is reversible such that when the slip cone is positioned above the slip assembly and when the slip assembly contacts the slip cone thereby causing the slip assembly to engage the wellbore inner radius, the anchoring sub is prevented from downward movement within the wellbore, and when the slip cone is positioned below the slip assembly and when the slip assembly contacts the slip cone thereby causing the slip cone to engage the wellbore inner radius, the anchoring sub is prevented from upward movement within the wellbore.
- 4. The anchoring sub of claim 1 further comprising a perforating gun secured to the first end of said anchoring sub.
- 5. The anchoring sub of claim 1 further comprising a perforating gun secured to the second end of said anchoring sub.
- 6. An anchoring sub for use within a wellbore comprising:
a mandrel disposed in a first position having a pattern disposed on the outer surface of said mandrel; and a slip assembly slideably disposed on said mandrel, wherein selective disposition of said slip assembly with said pattern anchors said anchoring sub to the wellbore against downward movement, and wherein said anchoring sub re-anchors within the wellbore after upward and then successive downward movement of said mandrel.
- 7. The anchoring sub of claim 6, wherein said slip assembly anchors said anchoring sub to the wellbore.
- 8. The anchoring sub of claim 6, wherein said slip assembly automatically becomes selectively repositioned on said pattern with vertical movement of said anchoring sub.
- 9. The anchoring sub of claim 6, wherein the distance traveled during downward movement of said anchoring sub during re-anchoring is less than the distance traveled during upward movement.
- 10. The anchoring sub of claim 6, wherein the downward movement of said anchoring sub during re-anchoring is less than 1 foot.
- 11. The anchoring sub of claim 6, further comprising a slip cone disposed on said mandrel engageable by said slip assembly, such that by engaging said slip cone, said slip assembly is urged outward into anchoring contact with the wellbore.
- 12. The anchoring sub of claim 10 further wherein said slip assembly comprises at least one rocker slip engageable with the wellbore to provide anchoring contact with the wellbore.
- 13. The anchoring sub of claim 6 further comprising at least one drag slip disposed on said slip assembly, said drag slip contactable with the wellbore thereby providing a drag force onto said slip assembly when said anchoring sub moves within the wellbore, where the drag force has a direction opposite to the direction of movement of said anchoring sub.
- 14. The anchoring sub of claim 6, wherein said mandrel is in a second position that is vertically reversed from said first position, wherein selective disposition of said slip assembly with said pattern anchors said anchoring sub to the wellbore against upward movement.
- 15. The anchoring sub of claim 6, wherein said slip assembly is engageable with said pattern in an anchoring position, a shock position, a lowering position, and a raising position.
- 16. The anchoring sub of claim 6, wherein when said slip assembly is engaged with said pattern in the anchoring position, the anchoring sub is anchored within the wellbore.
- 17. The anchoring sub of claim 16, wherein said slip assembly anchors said anchoring sub within the wellbore.
- 18. The anchoring sub of claim 15, wherein when said slip assembly is engaged with said pattern in the shock position, said anchoring sub is upwardly motivatable.
- 19. The anchoring sub of claim 15, wherein when said slip assembly is engaged with said pattern in the shock position, said anchoring sub is limited in its downward movement.
- 20. The anchoring sub of claim 19, wherein said anchoring sub limits downward travel to less than 1 foot.
- 21. The anchoring sub of claim 19, wherein said anchoring sub limits downward travel to less than 8 inches.
- 22. The anchoring sub of claim 15, wherein when said slip assembly is engaged with said pattern in the lowering position, said anchoring sub is upwardly and downwardly motivatable.
- 23. The anchoring sub of claim 15, wherein when said slip assembly is engaged with said pattern in the raising position, said anchoring sub is upwardly and downwardly motivatable.
RELATED APPLICATIONS
[0001] This application claims priority from co-pending U.S. Provisional Application No. 60/433,671, filed Dec. 16, 2002, the full disclosure of which is hereby incorporated by reference herein.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60433671 |
Dec 2002 |
US |