Well leak catcher
US5246067A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1992 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Apr 21, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A leak catcher for use on a pumping well around a polished rod operating a downhole pump in the well including an annular drip bowl connected with a base securable to the upper end of a well casing around a polished rod, a drain line fitting opening into a side of the drip bowl, a leak collection well formed in the bottom of the drip bowl, a horizontal liquid level switch mounted to a side of the liquid collection well, a drain valve mounted horizontally through a side of the liquid collection well, a removable hood securable to the drip bowl, and a polished rod lubricator assembly secured in the top of the hood around a polished rod. The hood may be either a solid cylindrical member formed of opaque metal or transparent plastic or may include hinged doors for access into the leak catcher without removal of the hood. The leak catcher is constructed in the modular form so that the drip bowl with the liquid level switch and drain fittings may be used alone or in conjunction with the hood and lubricator assembly. The catcher may also include a stuffing box with a remotely controllable emergency seal assembly and a flapper valve for closing the bore through the leak catcher if a polish…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.