新疆石油地质

新疆石油地质 ›› 2010, Vol. 31 ›› Issue (5): 524-526.

• 油藏工程 • 上一篇    下一篇

高含H2S 天然气偏差系数计算新模型

卞小强, 杜志敏, 汤勇   

  1. 西南石油大学 油气藏地质及开发工程国家重点实验室,成都 610500
  • 收稿日期:2010-03-10 发布日期:2020-10-21
  • 作者简介:卞小强(1979-),男,江苏江都人,在读博士研究生,油气藏工程,(Tel)028-83032091(E-mail)bxqiang3210_88@163.com.
  • 基金资助:
    国家863计划项目(2007AA062209)

New Model for Calculation of H2S-Rich Natural Gas Deviation Factor

BIAN Xiao-qiang, DU Zhi-min, TANG Yong   

  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, CHENGdu, Sichuan 610500, China
  • Received:2010-03-10 Published:2020-10-21

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摘要： 根据里群等实测的高含H2S 天然气偏差系数Z 值,利用非整数幂多项式拟合方法,建立了新的高含H2S 天然气偏差系数计算模型。利用新模型和Dranchuk-Abu-Kassem-Wichert-Aziz(DAK-W-A)模型对实测偏差系数进行了拟合计算。与实验值对比结果表明,新模型平均相对误差为0.276%,最大相对误差为2.734%,精度明显高于DAKW-A 模型,且具有计算快速、容易进行微分积分运算等特点。

关键词: 偏差系数, H2S, 天然气, 模型, 相对误差

Abstract: The development of new model for calculation of H2S-rich natural gas deviation factor is based on the deviation factor Z value measured by Li Qun, et al. and non-integral power polynomial fitting method. The measured deviation factor is calculated by simulation using this new model and Dranchuk-Abu-Kassem-Wichert-Aziz model. The comparison results with tested data show that the new model is in good accordance with experimental Z value, with average relative error of 0.276% and maximal relative error of 2.734%, obviously higher than that of Dranchuk-Abu-Kassem-Wichert-Aziz model in accuracy. In addition, the new model is characterized by quick calculation and convenient differential-integral calculation.

Key words: deviation factor, H2S, natural gas, model, relative error

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