THE PRODUCED WATER TEMPERATURE DISTRIBUTION MODELS OF OIL AND GAS EXPLOITATION ACTIVITIES AFTER THROUGH TEMPERATURE REDUCTION SYSTEM AND ITS IMPACT TO ENVIRONMENTPramono Iriawan, Soemarno, Arief Rachmansyah and Bagyo Yanuwiadi
Petrogas (basin) limited is an oil and gas mining company that has been operating in the Walio Petrogas (Basin) Limited Operations Area, Sorong Regency, West Papua Province since 1977. Oil and gas exploitation activities produced 60 oC produced water in KMT pond. Before being released to the sea, produced water needs to be controlled in order to meet the quality standards according to the Regulation of the Ministery of Environment No. 19 of 2010, which the minimum is 45Â°C. In this research the various number of sprinklers: 0, 2, 4, 6 and 8 were used along with 9 baffled aeration tub to control the waterâs temperature. The result of this study showed that the best treatment that reduced water temperature was 8 sprinklers, it reduced up to 33.5oC. The next step was to analyze the temperature distribution patterns of the existing and planned temperature-reducing ponds with physical treatment using DHI MIKE 21 software, so it can be selected which pondhad the most effective in reducing the temperature of produced water into rivers and the sea. Based on the results of the analysis using DHI MIKE 21, the location of 300 meters from the outfall is the ZID area, where there was a continuous increase in temperature, so it was not possible to have aquatic biota such as seagrasses. Through this research, it is expected to be a consideration in improving the produced waterâs treatment for Petrogas, so it will not damage the environment.