学术
基于密度校正的酸气拟临界参数计算公式
汪周华[1] 郭平[1] 周克明[2] 张地洪[2] 王丽[2] 高慧君[3]
[1]西南石油学院、油气藏地质及开发工程国家重点实验室,成都610500 [2]中国石油、西南油气田分公司勘探开发研究院,成都610051 [3]中国石油华北油田分公司,河北廊坊065000
摘 要:
天然气拟临界参数是与天然气有关计算的基础参数,含有酸性气体天然气大多采用Kay混合规则和Wichert-Aziz校正计算气体拟临界参数.而基于酸气密度计算方法国内还没有见到相关文章.收集了国内外各大气田93个酸性气体气样,结合实验分析结果建立了一个新的适合于酸性天然气拟临界参数计算的密度计算公式.采用新的计算公式计算某含H2S、CO2酸性天然气和常规天然气偏差因子,并与Kay混合规则和Wichert-Aziz校正计算模型、Standing方法实验结果进行对比分析,结果表明,该公式对于酸性气体具有较好的代表性,计算精度高于Kay混合规则和Standing密度计算方法,对于低分子量常规气体,Standing方法计算精度最高.[著者文摘]
文章出处:
《新疆石油地质》-2005年26卷6期 -664-666页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1001-3873（2005）06-0664-03
Calculation of Density Correction-Based Pseudo Critical Parameters of Sour Gas
WANG Zhou-hua, GUO Ping, ZHOU Ke-ming, ZHANG Di-hong, WANG Li, GAO Hui-jun （1. State Key Laboratory of Oil-Gas Reservoir Geology and Development Engineering, Southwest Petroleum Institute, Chengdu, Sichuan 610500, China; 2. Research Institute of Exploration and Development, Southwest Oilfield Company, PetroChina, Chengdu, Sichuan 610051, China; 3. Huabei Oilfield Company, PetroChina, Langfang, Hebei 065000, China）
Abstract:
The pseudo critical parameters of natural gas are the gas-related fundamental calculation data. The pseudo critical parameters of sour gas are calculated mostly by Kay rule and Wichert-Aziz correction, but the sour gas density-based method has not been published at home. This paper collected 93 sour gas samples from several gas fields at home and broad and established a new equation for calculation of the pseudo critical parameters of sour gas integrated with the experimental results. Also, the deviation factors （Z） of sour gas and conventional gas for H2S and CO2 are calculated by the new equation. Compared with the experimental results obtained by Kay rule, Wichert-Aziz correction model and Standing method, the result shows that the new equation is fit for sour gas and the accuracy is higher than Kay rule and Standing equations. However, for conventional gas with low molecular weight, the accuracy of Standing method is the highest.[著者文摘]
Key words:
sour gas; critical value; density; correction; calculation method
基金资助:
中国石油重点实验室项目,高含硫气体相态理论研究（部419）资助.
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