Wells – Processes – Assembling well part
Patent
1997-09-26
1999-07-13
Suchfield, George
Wells
Processes
Assembling well part
166 7513, 166 791, 166 851, 52 20, E21B 3302, E21B 3303
Patent
active
059213213
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 includes a layer disposed about its interior surface which is impermeable to methane gas. The invention can be fabricated in a single-section conical embodiment or a two-section conical or cylindrical embodiment. The two-section embodiment allows the base conical or cylindrical 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. A vent pipe is thereafter inserted into the aperture to permit gas collected within the vent hood to flow to surface.
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Chabot Ralph D.
Suchfield George
LandOfFree
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