Coiled tubing drilling apparatus and method
US5291956A · kind A · utility
120Cited by
11References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1992 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | Apr 15, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A low-cost method drilling and completing wells attaches a non-rotating jet drilling tool to coiled tubing. After drilling, the tubing portion outside the well is cut and the remaining tubing becomes the liner or casing for the well. By also using a residual bend remover, centralizers, and injecting a thermal cement slurry, very low cost steam injector wells can be drilled and completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.