Claims
- 1. A coring system having a wireline latching system for operating a coring tool, comprising:an outer barrel having a coring bit attached to a distal end thereof; an inner barrel disposed within said outer barrel, said inner barrel comprising an outer tube and an inner tube; a first latching mechanism interposed between said outer barrel and said inner barrel for selectively latching said outer barrel to said inner barrel; and a second latching mechanism interposed between said outer tube and said inner tube for selectively latching said outer tube to said inner tube.
- 2. The coring system of claim 1, further including a first wireline pulling tool configured to be selectively engageable with a proximal end of said inner barrel.
- 3. The coring system of claim 2, wherein said first pulling tool is configured to disengage said second latching mechanism and longitudinally move said inner tube relative to said outer tube.
- 4. The coring system of claim 3, wherein said first pulling tool is configured to disengage said first latching mechanism and retrieve said inner barrel relative to said outer barrel.
- 5. The coring system of claim 1, further including a second wireline pulling tool configured to be selectively engageable with a proximal end of said inner barrel.
- 6. The coring system of claim 5, wherein said second pulling tool is configured to leave said second latching mechanism in an engaged position locking said inner tube relative to said outer tube and to disengage said first latching mechanism and retrieve said inner barrel relative to said outer barrel.
Parent Case Info
This application is a Div. of 09/124,406, filed Jul. 29, 1998.
US Referenced Citations (68)
Foreign Referenced Citations (1)
Number |
Date |
Country |
3644723 |
Jul 1988 |
DE |