A Deliverability Equation in the Presence of Sulfur Deposition

作者：Hu, J. -H.^*; He, S.; Zhao, J. -Z.; Li, Y. -M.; Wang, X.

来源：Petroleum Science and Technology, 2014, 32(4): 402-408.

DOI：10.1080/10916466.2011.590836

• deliverability
• deposition
• elemental sulfur
• open-flow capacity
• well test

Precipitated elemental sulfur may block pores, decrease gas flow, and affect sour gas well production if elemental sulfur cannot be carried by gas. A percolation model in the presence of sulfur deposition was analyzed under pseudo-steady state flow. On the basis of fundamental filtration theory, a composite deliverability test model was established to identify the effect of deposited sulfur on open-flow capacity and additional skin. A group of field case was used to calculate and analyze the effect of sulfur deposition on deliverability equation. The results show that gas flow capacity decreases as sulfur saturation rises, while open-flow capacity decreases as damaged radius increases. Also the more volume of deposited sulfur there is, the larger the additional skin is, and the more serious the damage to the reservoir is.

• 出版日期2014-2-16
• 单位中国地质大学（北京）; 西南石油大学; 中国石油大学（北京）