西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

人工神经网络预测高含CO2 天然气的含水量

侯大力1,孙雷1,潘毅1,秦山玉1,董卫军2   

  1. 1.“油气藏地质及开发工程”国家重点实验室 西南石油大学,四川成都610500
    2. 重庆矿产资源开发有限公司,重庆渝中400042
  • 出版日期:2013-08-01 发布日期:2013-08-01
  • 基金资助:

    国家自然科学基金“废弃气藏CO2 地质封存机制及运移规律研究”(51274173)。

Predicting Water Content of High CO2 Content Natural Gas by Artificial
Neural Network

Hou Dali1, Sun Lei1, Pan Yi1, Qin Shanyu1, Dong Weijun2   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology & Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. Chongqing Mineral Resources Development Co. ,Ltd,Yuzhong,Chongqing 400042,China
  • Online:2013-08-01 Published:2013-08-01

摘要:

提出了一种基于人工神经网络模型预测高含CO2 天然气的含水量的新方法。网络输入变量CO2 摩尔分数、
温度、压力,网络的输出为高含CO2 天然气的含水量。该人工神经网络模型能够估算温度在20.0200.0 ℃,压力在
0.170.0 MPa,CO2 摩尔分数高达70% 天然气中水蒸汽的含量。对比文中建立的人工神经网络模型和目前常用的3
种预测高含CO2 天然气的含水量的经验模型,结果表明,人工神经网络的平均相对误差值最小,为1.275%,3 种经验
模型在CO2 含量较高时,预测精度较低。这就表明,人工神经网络模型在预测高含CO2 天然气含水量时,比3 种常用
的经验模型更具有优势。

关键词: 神经网络, 高含CO2, 天然气, 含水量

Abstract:

In this paper,a new method based on artificial neural network(ANN)for prediction of natural gas mixture water
content is presented. CO2 mole fraction,temperature,and pressure have been input variables of the network and water content
has been set as network output. The proposed ANN model is able to estimate water content as a function of CO2 composition up
to 70%,temperature between 20.0200.0 ℃ and pressure from 0.1 to 70.0 MPa. Comparisons show average absolute relative
error equal to 1.275%between ANN estimations and experimental data,which is smaller than the other three commonly used
empirical correlations. Furthermore,there is considerable deviation between experimental data and the other three commonly
used empirical correlations for prediction of high CO2 content natural gas water content. But artificial neural network has good
prediction results in high CO2 content natural gas. Results show ANN superiority to the common three correlations in literatures.

Key words: artificial neural network, high CO2 content, natural gas, water content