Continuous monobore liquid lining system
US7475726B2 · kind B2 · utility
0Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2007 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | May 2, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/138
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A process for drilling a well or a portion of a well capable of providing a generally constant interior wall diameter (monobore) and does not require installation of any liner or steel casing. The process comprises circulating settable material into the borehole wherein the settable material sets on at least a portion of the interior wall of the borehole to create a liner along the wall of the borehole and removing excess settable material out of the borehole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.