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The disposal of salt water produced with oil from the East Texas field has been successful in minimizing pollution of land areas and freshwater sources, and has been effective in maintaining bottomhole pressure. To date, 4.5 billion bbl of salt water have been returned to the producing reservoirs at a cost to the operators of approximately 2.5¢/bbl.
At Hastings field in Brazoria and Galveston Counties, Texas, Amoco is successfully disposing of 50,000-60,000 b/d of salt water by injection into salt-water-bearing formations below freshwater sandstones and above the oil-producing zones. The project is a "closed system," whereby the salt water produced is allowed no contact with air, thereby reducing corrosion attack on disposal facilities. To date, Amoco has injected approximately 500 million bbl of salt water.
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