Distribution of Sulfide in an Oil-water Treatment System and a Field Test of Treatment Technology in Daqing Oilfield |
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| Authors: | Y. Liu Z. H. Wang X. L. Zhuge R. S. Pang |
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| Affiliation: | 1. Key Laboratory of Enhanced Oil &2. Gas Recovery , Ministry of Education, Northeast Petroleum University , Daqing , China;3. Oil Recovery Plant No. 4, Daqing Oilfield Company Limited , Daqing , China;4. Maintenance &5. Emergency Repair Co., China Petroleum Bureau , Langfang , China |
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| Abstract: | In recent years, the sulfide in oil-water treatment system of Daqing Oilfield has brought serious problems, to induce electric dehydrator trip and waste oil recycle difficultly and eventually so severe as to prevent further oil productions. The treatment difficulty of wastewater with sulfide will increase, the oily wastewater after treatment will be deteriorated and induce the formation plugging. Meanwhile, the equipments and pipelines will also be seriously corroded. The authors studied the generation and distribution of sulfide in oil water treatment system in Daqing Oilfield and the field test was conducted in the dewatering and wastewater treatment system based on microbiological method. The results showed that the dynamic microcontrol technology could effectively prevent the generation and accumulation of aging oil, avoid frequent electric dehydrator trip, and decrease the labor quantity to ensure the normal production and meet the dehydration standards. The application of this method would bring better profit and environmental benefits for Daqing Oilfield. |
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| Keywords: | Daqing oilfield microbiological method oil-water treatment sulfate-reducing bacteria sulfide |
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