Method and apparatus for forming a window in a casing using a biasing arm
US7537055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2003 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Nov 23, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/067
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of cutting through a tubular, in particular, a casing at a selected location in a wellbore using a remotely controlled electrically powered cutting tool that comprises (a) a tool body, (b) a cutting head provided with a cutting means, the cutting head pivotally mounted on the tool body at or near the lower end thereof, and (c) an electrically actuatable means for pivoting the cutting head with respect to the tool body, the method comprising the steps of: passing the cutting tool to the selected location in the wellbore with the longitudinal axis of the cutting head aligned with the longitudinal axis of the tool body; pivoting the cutting head with respect to the tool body to a position where the cutting means of the cutting head is adjacent the wall of the tubular; and actuating the cutting means to cut through the tubular of the wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.