US3656552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for through-the-flowline tool installation
Assignee: Shell USA Inc
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Filing: 1970-07-06
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Granted: 1972-04-18
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Expires: 1990-07-06
Abstract
Abstract There is disclosed a method and apparatus for placing and removing a retrievable tool in a well conduit. The tool is placed by pumping it down the well conduit to a landing area where it is latched in place. The tool is retrieved by pumping a retrieving tool into the conduit into engagement with the retrievable tool and unlatching the retrievable tool with the retrieving tool. The two tools latched together are pumped up the conduit, and the retrieving tool is then disengaged from the retrievable tool when an elevation of lower pressure is reached and both tools are pumped out of the conduit.
Inventors
- 👤 Floyd M Pollock Jr
- 👤 William J Neal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:12
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/04; E21B23/042; E21B23/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
The method of pulling a retrievable tool latched in a landing area in a well conduit comprising the steps of: moving a retrieving tool downwardly through the conduit into engagement with the retrievable tool; connecting the retrieving tool to the retrievable tool; unlatching the retrievable tool from the landing area with the retrieving tool; raising the connected tools to a higher elevation in the well conduit; disconnecting the retrieving tool from the retrievable tool; and applying fluid pressure to the tools for moving the same upwardly through the conduit toward the surface.
Claim 2
Independent Claim
92 words
The method of pulling a retrievable tool latched in a landing area in a well conduit comprising the steps of: moving a retrieving tool downwardly through the conduit into engagement with the retrievable tool; connecting the retrieving tool to the retrievable tool; unlatching the retrievable tool from the landing area with the retrieving tool; raising the connected tools to a higher elevation in the well conduit; disconnecting the retrieving tool from the retrievable tool; and applying fluid pressure to the tools for moving the same upwardly through the conduit toward the surface.
Claim 3
Dependent Claim
41 words
The method of claim 1 wherein the moving step comprises connecting the retrieving tool to the retrievable tool upon engagement therewith and further comprising, after the unlatching step, raising the retrieving tool and the retrievable tool together from the landing area.
Claim 4
Dependent Claim
39 words
The method of claim 2 wherein the conduit comprises a port, a control conduit connected thereto, the landing area being below the port and wherein the raising step comprises raising the tools together to a location above the port.
Claim 5
Dependent Claim
27 words
The method of claim 3 wherein the pressure applying step comprises passing fluid through the control conduit into the conduit for flowing the tools through the conduit.
Claim 6
Dependent Claim
71 words
The method of claim 3 wherein the retrieving tool is on one side of the port and the retrievable tool is on the other side thereof during the unlatching step and wherein the raising step comprises applying fluid pressure through the conduit between the retrieving tool and the retrievable tool; and maintaining pressure in the conduit above the retrieving tool less than the pressure in the conduit below the retrievable tool.
References Cited (Backward Citations)
US2297044A
Cited
US2204340A
Cited
US3163226A
Cited
US3269463A
Cited
US3312283A
Cited
US3378080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |