Chemical injection tubing anchor-catcher
US4605063A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 1984 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | May 11, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1035
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An anchoring apparatus for securing a production tubing string against axial movement in a subterranean well is disclosed. The anchoring apparatus can be employed with a conventional sucker rod pumping apparatus transporting fluids through the production tubing. A separate injection line is attached to the exterior of the production tubing and treating fluids are injected therethrough. A conduit which can be connected to the separate injection line extends along the exterior of the inner body of the anchoring apparatus in an axially extending groove and extends through encircling anchoring slips which are expanded by rotational movement of the production tubing and of the body of the anchoring apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.