西南石油大学学报(自然科学版) ›› 2020, Vol. 42 ›› Issue (6): 56-62.DOI: 10.11885/j.issn.1674-5086.2020.05.12.05

• 油气田人工智能技术与应用专刊 • 上一篇    下一篇

基于PCA-BNN的页岩气压裂施工参数优化

檀朝东1, 贺甲元2, 周彤2, 刘健康1, 宋文容3   

  1. 1. 中国石油大学(北京)油气资源与探测国家重点实验室, 北京 昌平 102249;
    2. 中国石化石油勘探开发研究院, 北京 海淀 100083;
    3. 北京雅丹石油技术开发有限公司, 北京 昌平 102200
  • 收稿日期:2020-05-12 发布日期:2020-12-21
  • 通讯作者: 檀朝东,E-mail:tanchaodong@cup.edu.cn
  • 作者简介:檀朝东,1968年生,男,汉族,安徽望江人,教授级高级工程师,博士,主要从事采油气工程和大数据方面的研究。E-mail:tanchaodong@cup.edu.cn;贺甲元,1984年生,男,汉族,湖南衡阳人,副研究员,硕士,主要从事水力压裂增产改造方面的研究。E-mail:hejy.syky@sinopec.com;周彤,1986年生,男,汉族,山东济宁人,副研究员,博士,主要从事水力压裂增产改造方面的研究。E-mail:zhout1986@126.com;刘健康,1996年生,男,汉族,黑龙江绥化人,硕士研究生,主要从事数据挖掘算法在压裂参数优化、注水开发方面的研究工作。E-mail:2244705046@qq.com;宋文容,1991年生,女,汉族,湖北黄冈人,工程师,硕士,主要从事采气工程和大数据方面的研究。E-mail:yougongswr@163.com
  • 基金资助:
    国家自然科学基金(51974327);国家科技重大专项(2016ZX05043-004)

A Study on the Optimization of Fracturing Operation Parameters Based on PCA-BNN

TAN Chaodong1, HE Jiayuan2, ZHOU Tong2, LIU Jiankang1, SONG Wenrong3   

  1. 1. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Changping, Beijing 102249, China;
    2. Petroleum Exploration and Production Research Institute, SINOPEC, Haidian, Beijing 100083, China;
    3. Beijing Yadan Petroleum Technology Development Co. Ltd., Changping, Beijing 102200, China
  • Received:2020-05-12 Published:2020-12-21

摘要: 国内外学者在已有大量国外页岩压裂样本数据的前提下,开展了基于机器学习的页岩气压裂有效期预测及压裂参数优化的研究。随着近年来中国F气田不断地规模开发,积累了大量的压裂施工、生产动态、解释成果数据。通过利用已有的200口井的压裂施工历史数据及储层物性参数建立贝叶斯神经网络模型来优化压裂施工参数。选取对压裂效果有影响的储层物性参数、完井参数、压裂施工参数,用皮尔逊相关系数法分析11个参数的相关性;用主成分分析法(PCA)进一步降维处理,以降维后的主成分作为贝叶斯神经网络模型的输入参数,以压裂效果评价指标(有效期)为输出参数,引入贝叶斯方法自适应调整正则化系数避免神经网络过拟合,生成三层贝叶斯神经网络预测模型。用200口井中90%的井数据作为训练集,10%的井数据作为测试集,对该模型进行训练,实验结果表明,训练后该模型预测测试集的相对误差均值在5%以内,可以用来优化压裂施工参数。

关键词: 压裂, 主成分分析, 贝叶斯神经网络, 施工参数, 优化

Abstract: Domestic and foreign scholars have carried out the research of shale gas fracturing production prediction and fracturing parameter optimization based on machine learning on the premise of a large number of foreign shale fracturing sample data. With the continuous development of F Gas Field in recent years, a large number of data from fracturing operation, production dynamic and interpretation results have been accumulated. In view of the fact that these data are not fully utilized in the design of fracturing operation parameters at present, the Bayesian neural network model is established to optimize the fracturing operation parameters by using history data of the fracturing operation parameters and reservoir physical parameters from 200 wells. The reservoir physical parameters, completion parameters and fracturing operation parameters which have an impact on the fracturing effect are selected. The correlation of 11 parameters is analyzed by Pearson correlation coefficient method. Principal Component Analysis (PCA) is used for further dimension reduction. The principal components are used as input parameters of Bayesian Neural Network model. The validity period is used as output parameter. Bayesian method is introduced to adjust regularization coefficient adaptively to avoid neural network overfitting. And then, a three-layer Bayesian neural network prediction model is generated. The model is trained by using 90% of the data of 200 wells as training set and 10% as test set. The experimental results show that the mean relative error of the model prediction results after training is within 5%, which can be used to optimize the fracturing operation parameters.

Key words: fracturing, PCA, Bayesian neural network, operation parameters, optimization

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