Hydrocarbon vent hood
US6176317A · kind A · utility
Inventor
Key dates
| Filing date | Jun 2, 1999 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Jun 2, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/0122
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved vent hood for abandoned oil and gas wells which is made of concrete and reinforced with linear and coiled rebar to withstand substantial overburden. The invention can be fabricated in either a two-section conical or cylindrical embodiment. Either of the two-section embodiments allow the base member to be positioned around the abandoned well casing and thereafter filled with gravel. A concrete lid having an aperture is thereafter placed upon the base section with a gas sealant disposed between the mating surfaces of lid and base sections. A vent pipe is thereafter inserted into the aperture to permit gas collected within the vent hood to flow to surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.