THE MODEL STUDY ON THE ELEMENTAL SULFUR DEPOSITION CONSIDERING HIGH VELOCITY NON\|DARCY FLOW

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  • 1. Southwest Oil and Gas Field Company Exploration and Development Research Ins titute,Chengdu 610050, China;
    2. State Key Laboratory of Reservoir Geology and Exploitation, Southwest Petrole um University,Chengdu 610050,China.
    3. Southwest Oil and Gas Field Company Science and Technology Bureau,Chengdu 610050, China.
    .

Received date: 2007-05-14

  Revised date: 2007-08-02

  Online published: 2007-10-10

Abstract

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.

Cite this article

YANG Xue-Feng, HU Yong, HUANG Xian-Ping, DU Zhi-Min, GUO Ping . THE MODEL STUDY ON THE ELEMENTAL SULFUR DEPOSITION CONSIDERING HIGH VELOCITY NON\|DARCY FLOW[J]. Natural Gas Geoscience, 2007 , 18(5) : 764 -766,773 . DOI: 10.11764/j.issn.1672-1926.2007.05.764

References

[1]李士伦. 天然气工程[M]. 北京:石油工业出版社. 2001.
[2]Frauk Civan, SPE.Modeling Well Performance Under None-quilibrium Deposit ion Conditions[R].SPE 67234, 2001.
[3]Bruce E Roberts. The Effect of Sulfur Deposition on Gas Well Inflow Per formance[R]. SPE 36707,1998.

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