Wellhead bunker

Claim 1

Protective apparatus for use in delivery of oil and/or gas from a well through production tubing to a distribution system in a heavily trafficked environment, comprising: a reinforced concrete bunker having a single chamber and an open top and substantially submerged in the earth in a position to surround the production tubing at near the upper end thereof; a wellhead attached to the production tubing in a position to be completely enclosed within said bunker; a top support structure attached to the inner walls of said concrete bunker at a position displaced from the top thereof; a cover dimensioned to fit within the top of said concrete bunker and supported on said support structure at a position above said wellhead; first and second access openings positioned substantially diametrically opposite to each other in said cover to each provide for both entry into the single chamber of said concrete bunker and through ventilation; first and second ladders, one for each of said access openings attached to an inner wall of the chamber of said concrete bunker in a location such that the upper end of said ladder terminates in the vicinity of an access opening; first and second hatch doors one for each of said access openings to close off said access openings; and a sump line attached to the inner wall of said concrete bunker and having one open end terminating at near the bottom of said bunker and a second open end extending from said bunker at a position above ground level.