[1]陈亮,孙雷.CO2气藏偏差因子计算模型评价[J].复杂油气藏,2014,(02):57.
　Chen Liang,Sun Lei.Evaluating calculation methods of Z-factor for CO2 gas reservoir[J].Complex Hydrocarbon Reservoirs,2014,(02):57.
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CO2气藏偏差因子计算模型评价
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
期数:
2014年02期
页码:
57
栏目:
油气开发
出版日期:
2014-06-25

文章信息/Info

Title:
Evaluating calculation methods of Z-factor for CO2 gas reservoir
作者:
陈亮1; 孙雷2
1.中国石油新疆油田分公司,新疆克拉玛依834000；2.西南石油大学油气藏地质及开发工程国家重点实验室，四川成都610500
Author(s):
Chen Liang; Sun Lei
1.Xinjiang Oilfield Company ，PetroChina，Karamay ，Xinjiang 834000; 2.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,SWPU，Chengdu，Sichuan 610500
关键词:
ＣＯ２气藏　偏差因子　理论计算　模型评价
Keywords:
CO2 gas reservoir; Z-factor; theoretical calculation; model evaluation
分类号:
TE375
文献标志码:
A
摘要:
应用常规酸性气体偏差因子计算模型，结合Key’s、SBV及RK混合准则和酸性气体临界参数校正方法，计算CO2气藏偏差因子，并与实验测定值对比，评价适合CO2气藏偏差因子计算的模型。研究表明：BB经验公式对CO2气藏偏差因子计算适应性最强，误差小于3%，满足工程计算要求；常规酸性气体临界参数校正方法，很难改善CO2气藏偏差因子计算精度。各种模型中，RK+WA精度最高，SBV+CKB误差最大。当压力>35MPa时，各种经验公式计算误差相应增大，但BB+SBV模型精度仍然很高，其中，BB+SBV未校正模型在42.34MPa时，误差仅2.64%，适合高压CO2气藏偏差因子计算。
Abstract:
Combined with the mixed criteria of Key’s，SBV，and RK，and the critical parameter calibration method，the Z-factors were calculated by the conventional calculation models of sour gas.Compared with the experimental results，it was evaluated that the model was suitable for calculating Z-factor of CO2 gas reservoir.The study results indicated that with the error less than 3%，BB empirical formula was highly adapted to calculating the Z-factor for CO2 gas reservoir，and can meet the engineering computing requirements;it was difficult to improve the Z-factor’s calculation accuracy by using the critical parameter calibration method for conventional sour gas;for all the models，the highest precision was RK+WA model，and the maximum error was SBV+CKB model;for all the empirical formula calculations，if the pressure is greater than 35 MPa，the error will increase accordingly，but the BB+SBV model was still with high precision.Especially，when the pressure equaled 42.34 MPa，the error of BB+SBV uncorrected model was only 2.64%.So it was suitable to calculate the Z-factor for high pressure CO2 gas reservoir.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2013-09-25；改回日期：2014-01-13
作者简介：陈亮（1987—），助理工程师，现主要从事油气藏综合地质及提高采收率研究。电话：15809903579,E-mil：cl198724@163.com。
更新日期/Last Update: 2014-06-25