收稿日期: 2007-05-14
修回日期: 2007-08-02
网络出版日期: 2007-10-10
基金资助
国家自然科学基金项目(编号:50474039)资助.
THE MODEL STUDY ON THE ELEMENTAL SULFUR DEPOSITION CONSIDERING HIGH VELOCITY NON\|DARCY FLOW
Received date: 2007-05-14
Revised date: 2007-08-02
Online published: 2007-10-10
杨学锋, 胡勇, 黄先平, 杜志敏, 郭平 . 高速非达西流动时元素硫沉积模型研究[J]. 天然气地球科学, 2007 , 18(5) : 764 -766,773 . DOI: 10.11764/j.issn.1672-1926.2007.05.764
The deposition of elemental sulfur belongs to one of the difficult tas ks when developing the high sulfur content gas reservoirs which are existed exte nsively.The solubility of elemental sulfur will be reduced when the pressure de creases.The reduction of elemental sulfur solubility leads to sulfur deposition s, which damages the formation and depress the porosity and permeability.The re sults of sulfur deposition depress the gas production.Based on the high velocit y non-Darcy flow near the well bore, the model of elemental sulfur deposition i s established firstly, then using it to calculate the real gas reservoirs compari ng to the Darcy flow.By comparison, the results show that the amount of the non -equilibrium deposition is more than the equilibrium deposition and the damage c aused by the non-Darcy flow is severe r than the Darcy flow.So a reasonable production rate must be chosen in order to prevent the sulfur from deposition when developing the gas reservoirs with high sulfur content.
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