Petrogas Processing Calgary Plant

Thirty Corporate Oil &Gas Working Owners in the Calgary Gas Fieldsbecame shareholders of Petrogas Processing Ltd. for the purpose of establishinggas plant processing facilities to process their combined gas reserves of inexcess of 1500 billion cu. ft. Jefferson Lake Petrochemicals has been appointedthe Operator of the Petrogas Plant Facilities. This $13,000,000 Plant facility consists of some 135 miles of field pipeline systems; a gas purification section design for 150 million cu. ft./daycapacity utilizing the Hot Potassium and Conventional Amine treating processes;a modified Claus process to produce 875 long tons/day of elemental sulphur; aconventional refrigeration unit for 125 million cu. ft./day of pipe line gasdelivery to meet water and hydrocarbon dewpoint specification; and, a 2200bbl./day liquid condensate stabilization unit. The combined plant inlet gas streams have approximately 24% acid gas, or 16%hydrogen sulphide and 8% carbon dioxide. The use of the Hot Potassium gaspurification section is proving very satisfactory for extracting a large partof the acid gas having this ratio of acid gas volumes. The plant design hasresulted in lower capital costs, less gas fuel consumption and comparativelylittle chemical losses as compared to other gas processing plant designs in Canada. Glycol pipe line delivery and gathering systems to and from each wellheadfor gas dehydration in the fields is used whereby central plant regeneration ofthe glycol can be obtained. This type of functional design will reducecorrosion in the gas gathering systems and prevents excessive gas hydratesoccurring at the 1200 psia gas gathering pressures. With the Crossfield gasfield now having proved 81.4 square miles and the Elkton gas field havingproved 47.7 square miles of productive area, the field gas dehydration designcapital cost has proved to be comparatively low for the five Elkton gas wellsand eight Crossfield wells now connected to the Plant. As additional gasproducing wells are completed in these large fields, the unit cost/wellheaddehydration will continue to be reduced.