A well in the Topeka-Lakompta Formation found in the Greenwood Field in Morton, Kansas had a depth of 2900-3100 feet. The total fluid production was 25 BPD, with a 100% water cut. Total gas production was 130 MCFD. Hydrogen sulfide caused by SRBs was at 18 ppm. The well was bleach treated at a cost of $0.20/mcf. The pump would plug and stick with iron sulfides twice per year, resulting in a pulling job and replacement of rods and pump. The bleach treatment consisted of 4 drums 10% Sodium hypochlorite, 3 pounds 67% pool Chlorine, and Spearhead Bleach. After flushing with 2% KCI, the well would be shut-in for 24 hours.
Treatment with Micro-Bac International ‘s bacterial products for oil fields began. A monthly schedule of microbial treatment was established.
The cost to control H₂S and corrosion has been reduced to less than $0.05/mcf. A reduction of iron sulfide scale in the surface equipment was also noticed. The Hydrogen sulfide caused by SRBs was reduced to 7ppm.
The use of Micro-Bac, Inc.’s bacterial products in this operation proved to be an effective and economical treatment for reducing hydrogen sulfide and scale buildup on well equipment.
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