石油学报 ›› 2008, Vol. 29 ›› Issue (5): 761-765.DOI: 10.7623/syxb200805024

• 石油工程 • 上一篇    下一篇

地层可钻性级值预测新方法

马海1, 王延江1, 魏茂安2, 胡睿2   

  1. 1. 中国石油大学信息与控制工程学院, 山东东营, 257061;
    2. 中国石化胜利石油管理局钻井工艺研究院, 山东东营, 257017
  • 收稿日期:2007-11-30 修回日期:2008-01-04 出版日期:2008-09-25 发布日期:2010-05-21
  • 作者简介:马海,男,1981年4月生,2004年毕业于中国石油大学(华东),现为中国石油大学(华东)在读博士研究生,主要从事信号与信息处理及模式识别研究.E-mail:mh_19810420@163.com
  • 基金资助:
    中国石化科技攻关项目(JP04014)“基于钻井工程地质数据库的钻井模拟”;中国石化科技攻关项目(JP03009)“地质导向钻井工艺技术研究”联合资助

A novel method for predicting formation drillability

MA Hai1, WANG Yanjiang1, WEI Mao'an2, HU Rui2   

  1. 1. College of Information and Control Engineering, China University of Petroleum, Dongying 257061, China;
    2. Drilling Technology Research Institute, Sinopec Shengli Petroleum Administration Bureau, Dongying 257017, China
  • Received:2007-11-30 Revised:2008-01-04 Online:2008-09-25 Published:2010-05-21

摘要: 对测井资料与地层可钻性级值的关系进行了分析,提出了一种基于粒子群优化支持向量机算法预测地层可钻性级值的新方法,利用测井声波时差、地层密度、泥质质量分数和地层深度进行学习训练支持向量机,并利用粒子群优化算法对支持向量机(PSO-SVM)参数进行优化,建立了预测地层可钻性级值的支持向量机模型。应用该方法对准噶尔盆地庄2井的地层可钻性级值进行了预测,并将该方法的预测结果与BP神经网络方法的预测结果进行了比较。结果表明,该方法优于BP神经网络方法,具有预测精度高、收敛速度快、推广能力强等优点。

关键词: 地层可钻性, 粒子群优化算法, 支持向量机, 测井资料, 参数优化, 预测模型

Abstract: After the relationship between well-log data and formation drillability was analyzed,a novel method for predicting formation drillability based on particle swarm optimization and support vector machine(PSO-SVM) was proposed.A prediction model for formation drillability was established using the data of well-log acoustic velocity,formation density,fraction of shale and formation depth by training the SVM optimized by PSO algorithm.The proposed method was applied to Zhuang 2 Well in Junggar Basin.The experimental results show that it has higher prediction precision,faster convergence speed and better generalization effect than BP neural network.

Key words: formation drillability, particle swarm optimization algorithm, support vector machine, well-log data, parameter optimization, prediction model

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