Austin Chalk Formation Luling Field – Emulsion Breaking and Corrosion Control
A well in the Austin Chalk Formation found in the Luling Field had a depth of 2,000 feet. The total production was 2,000 barrels per day (battery field), with a 10% wellhead water cut. Due to a tight emulsion and severe scale problems in well pipelines and battery tank lines, the operator was unable to reduce the water cut below 1% in a 3,000 barrel tank, heated to 50°C, using chemical emulsion breakers.
Treatment with Micro-Bac International bacterial products for oil fields (Para-Bac) began. The injection of chemical emulsion breakers into the flow line was discontinued. A monthly schedule of microbial treatment was established.
Within fourteen days the water cut in battery tanks dropped to 0.4 and remained there for the length of the treatment. After treatment was discontinued the water cut rose back to original levels within 30 days. Treatment was resumed and supplemented with an extra gallon of Para-Bac in the flow lines. The water cut dropped to 0.4 and remained there. In addition, operators reported a great reduction in corrosion and scale related problems.
The use of Micro-Bac International bacterial products in this operation proved to be an effective and economical treatment for breaking emulsions in the oil field industry.