Methods and systems for cementing wells that lack surface casing
US7290611B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2004 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Sep 18, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and systems for cementing casing in well bores drilled in subterranean formations, and more particularly, methods and systems for cementing casing in a well bore without surface casing or a well head are provided. A method provided herein may comprise sealing an annulus at the mouth of the well bore with a seal; pumping a cement composition into the annulus through the seal; and taking circulation fluid returns from the inner diameter of the casing. A system provided herein may comprise a seal of an annulus at the mouth of the well bore; a cement composition pump fluidly connected to the annulus through the seal; and a coupling connected to the exposed end of the casing for taking circulation fluid returns from the inner diameter of the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.