Apparatus and method for use in a well bore
US7703523B2 · kind B2 · utility
7Cited by
7References
42Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2005 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Nov 14, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/165
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus for use above and below a restriction in a well bore and a method of operation is described. The apparatus comprises an upper element, such as a wiper, operable in the well bore above the restriction and a lower element, which may be a lower wiper, operable in the well bore below the restriction. A drop ball sized to pass through the restriction is released from the upper element and thereby passes through the restriction to operate the lower element. In one embodiment, the apparatus is incorporated into a running tool, which may be used to hang liners by dimple forming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.