西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (2): 129-132.

• 石油与天然气工程 • Previous Articles     Next Articles

FORECAST MODEL OF LOCATION OF SULFUR DEPOSITION IN THE WELL BOREOF HIGH SULFUR GAS WELL

FU De-kui 1 GUO Xiao 2 DU Zhi-min 2 DENG Sheng-hui 3 LIU Lin-qing 4   

  1. （1. Puguang Company, Zhongyuan Oilfield, SINOPEC, Dazhou, Sichuan 635000, China; 2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China; 3. Drilling and Production Institute, Tuha Oilfield, Shanshan, Xinjiang 838202, China 4. Research Institute of Exploration and Development,Southwest Oil and Gas Field Company, CNPC, Chengdu, Sichuan 610051, China）Journal of Southwest PetroleumUniversity, Vol. 33, No. 2, 129 – 132, 2011（1674 – 5086，in Chinese）
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-20 Published:2011-04-20

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Abstract: During the course of production of high sulfur gas well, temperature and pressure falls continually along well bore, solubility of sulfur particles in gas phase declines, and sulfur particle precipitate in well bore from gas phase
after running up to saturation state if velocity of gas is less than critical sustaining velocity of particle, sequentially resulting in blockage of gaseous flow channel. Gas well production may halts when sulfur deposition became severe. In this paper, an integrated forecast model of sulfur deposition in high sulfur gas well is presented by coupling pressure and temperature forecasting model, critical sustaining velocity model of particle and model of solubility of
sulfur particles in gas phase. A case analysis is carried out in well-L. The result shows that, with production decrease,gaseous velocity gradually declines, and therefore, area of sulfur deposition steps up along borehole after production
declines to critical production.

Key words: high sulfur gas well, well bore, sulfur deposition, location, critical velocity

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