Wireline latching apparatus and method of use
US4116274A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Jul 25, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A wireline latching apparatus and method of use with wireline instruments for measuring temperature and pressure downhole in flowing oil and gas wells. The latching apparatus includes a tubular body for connection to the instrument. Three arms are mounted in the tubular body pivotally so that their upper ends open outward. A downwardly facing shoulder is located in the well pipe in the area where the measurements are to be taken. An actuating mechanism is operable to open and close the arms so that their upper ends bear against the shoulder. The instrument with the latching mechanism is lowered into the well and positioned so that the arms are adjacent the shoulder. The arms are opened to engage the shoulder and the wireline tensioned to prevent whipping of the line as fluid flows past.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.