Method for producing high hydrogen sulfide content gas wells

Claim 1

The method of claim 1 where the hot fluid is steam.

Claim 6

A method of producing a fluid having a high hydrogen sulfide content from a fluid-containing subsurface earth formation through wells without plugging the wells with sulfur precipitate which comprises the steps of: providing a well bore extending from the earth surface to the subsurface earth formation; lining at least a part of the well bore with a tubular casing; completing the well bore in fluid communication with the subsurface earth formation; extending a production tubing string into the wellbore to a point adajacent the subsurface earth formation whereby an annulus is defined between the tubular casing and the production string of tubing; packing off the annulus with a pack off means set at a point in the well bore above the subsurface earth formation to prevent fluid flow up the annulus from the subsurface earth formation; extending an insulated circulating tubing string into the annulus to a point above the pack off means; producing fluid having a high hydrogen sulfide content up the production tubing string from the subsurface earth formation; and simultaneously circulating a hot fluid down the insulated circulating string and up the annulus to heat the produced fluid in the production tubing string and thereby retard sulfur precipitation in the production tubing string

Claim 9

A method for preventing sulfur deposition in the production tubing string of a well producing a sulfur-containing fluid from a subterranean earth formation comprising the steps of; flowing the sulfur-containing fluid from the production zone to the surface through the production tubing string; heating the outside of the production tubing string to heat the sulfur-containing fluid flowing through the production tubing string to retard sulfur deposition from the flowing fluid; and injecting a hot sulfur-solvent into the flowing sulfur-containing fluid through an injection tubing string at a point below a pack-off means in said well.