E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/39
E21B 43/24 (2006.01) C09K 8/532 (2006.01) E21B 43/40 (2006.01)
Patent
CA 1302872
T 5740 A B S T R A C T PRODUCTION OF HYDROGEN SULPHIDE-CONTAINING GAS FROM AN UNDERGROUND FORMATION Process for the production of at least a gaseous product containing a substantial amount of hydrogen sulphide via a borehole from an underground formation containing besides the hydrogen sulphide at least elemental sulphur, comprising the following steps: -(a) injecting a liquid substantially consisting of hydrocarbons into the bore-hole or into the underground formation near to the end of the bore-hole, -(b) producing a gaseous and a liquid hydrocarbons-containing fraction from the underground formation, -(c) separating the gaseous fraction from the liquid hydrocarbons- containing fraction, -(d) if necessary, separating an aqueous fraction from the hydrocarbons-containing fraction, -(e) heating the hydrocarbons-containing fraction in order to remove elemental sulphur in the form of hydrogen sulphide, and -(f) reinjecting at least a part of the thus treated hydrocarbons- containing fraction into the bore-hole or into the underground formation near to the end of the bore-hole as at least a part of the liquid substantially consisting of hydrocarbons employed in step (a). The heating of the hydrocarbon containing fraction is preferably carried out under a hydrogen atmosphere, especially in the presence of a cobalt/molybdenum/alumina catalyst. EGRH04
543213
Delude Stephen Gerald
Luinstra Edward Adrian
Shell Canada Limited
Smart & Biggar
LandOfFree
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