Patent ID: 7957903

Claim:
A low maintenance adjustable gas trap for connecting to a flow line of a drilling rig for a well, the gas trap comprising: a. a plurality of couplings connected in parallel; wherein each coupling secures to a flow line of the drilling rig for the well; b. a plurality of hammer unions; wherein each hammer union engages one of the couplings; c. a plurality of base manifold pipes; wherein each base manifold pipe engages one of the hammer unions; d. a base manifold flow line for flowing gas samples from each of the couplings to a chimney pipe; e. a controllable valve in communication with the chimney pipe; f. a connector integral with the chimney pipe for providing a pressure safety release; g. a reducer connected to the chimney pipe opposite the base manifold flow line for modifying the diameter of the gas sample flowing from the flow line; h. an expansion chamber component connected to the reducer having an expansion chamber diameter greater than the reducer; i. a restrictor connected to the expansion chamber component opposite the reducer; wherein the restrictor has a diameter no more than one third the diameter of the expansion chamber component diameter; and j. a conduit connection connected to the restrictor for engaging a conduit that flows fluid from the gas trap to a gas analyzer.