Whipstock assembly with hydraulically set anchor
US5154231A · kind A · utility
116Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1990 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Sep 19, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/042
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A one-trip whipstock assembly incorporating a hydraulically set anchor which includes an interlock for maintaining the anchor in its set position upon interruption of hydraulic pressure. The anchor is connected to the lower end of the assembly which also includes a whipstock for diverting cutting tools and a locator sub for positioning the assembly in the cased well bore. The whipstock assembly is designed to be run into the well using a running string or a mill attached to the upper end of the whipstock in order to locate and set the whipstock and mill the casing in only one trip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.