超深破碎型地层岩石力学参数的大数据预测模型

周舟, 李犇, 耿宇迪, 肖锐

周舟,李犇,耿宇迪,等. 超深破碎型地层岩石力学参数的大数据预测模型[J]. 石油钻探技术,2024,52(5):91−96. DOI: 10.11911/syztjs.2024084
引用本文: 周舟,李犇,耿宇迪,等. 超深破碎型地层岩石力学参数的大数据预测模型[J]. 石油钻探技术,2024,52(5):91−96. DOI: 10.11911/syztjs.2024084
ZHOU Zhou, LI Ben, GENG Yudi, et al. Prediction model of rock mechanics parameters in ultra-deep fractured formations based on big data [J]. Petroleum Drilling Techniques, 2024, 52(5):91−96. DOI: 10.11911/syztjs.2024084
Citation: ZHOU Zhou, LI Ben, GENG Yudi, et al. Prediction model of rock mechanics parameters in ultra-deep fractured formations based on big data [J]. Petroleum Drilling Techniques, 2024, 52(5):91−96. DOI: 10.11911/syztjs.2024084

超深破碎型地层岩石力学参数的大数据预测模型

详细信息
    作者简介:

    周舟(1985—),男,重庆人,2008年毕业于中国石油大学(北京)油气储运工程专业,2015年获美国科罗拉多矿业学院石油工程专业博士学位,副教授,主要从事碳酸盐岩钻井和压裂相关的岩石力学研究工作。E-mail:zhouzhou@cup.edu.cn

  • 中图分类号: TE21

Prediction Model of Rock Mechanics Parameters in Ultra-DeepFractured Formations Based on Big Data

  • 摘要:

    超深储层油气资源丰富,是目前油气开发的重点,但是储层岩体破碎和非均质性强,传统的预测储层力学参数方法误差大,对工程设计和施工造成很大的困难。基于大量试验和现场施工数据,分析了储层测井数据、储层裂缝数据、岩石力学数据的相互联系,建立了基于岩石力学性质−地质储层特征−测井解释之间物理关联的多参数约束;开发了多元非线性回归拟合算法模型,形成了超深破碎型储层全储层段岩石力学参数预测模型。该预测模型克服了破碎型地层数据量少导致的计算误差大的难题,能明确全储层段岩石力学参数,与实际工程施工参数相比预测准确度达90%以上。研究结果为超深破碎型地层钻完井安全施工提供了技术支撑。

    Abstract:

    The rich oil and gas resources in ultra-deep reservoirs are the focus of oil and gas development at present. However, due to the high fragmentation and strong heterogeneity of rock mass in reservoirs, the traditional method of predicting reservoir mechanics parameters has a large error, which causes great difficulties in engineering design and operation. Based on a large number of experimental and field operation data, the interrelationship among reservoir logging data, reservoir fracture data, and rock mechanics data was analyzed. A multi-parameter constraint was established based on the physical correlation between rock mechanical properties, geological reservoir characteristics and logging interpretation, and a multivariate nonlinear regression fitting model was developed to predict rock mechanics parameters in the whole reservoir section of ultra-deep fractured reservoirs. The prediction model overcame the problem of large calculation errors caused by small amount of fractured formation data and could determine the rock mechanics parameters in the whole reservoir section. Compared with the actual operation parameters, the prediction accuracy is more than 90%. The research results provide technical support for the safe operation of drilling and completion in ultra-deep fractured formations.

  • 图  1   数据集构成

    Figure  1.   Dataset composition

    图  2   模型算法的基本结构

    Figure  2.   Basic structure of model algorithms

    图  3   模型算法的校正流程

    Figure  3.   Revision process of model algorithm

    图  4   抗压强度预测和验证

    Figure  4.   Prediction and verification of compressive strength

    图  5   X1井储层段参数

    Figure  5.   Parameters in reservoir section of Well X1

    图  6   X1井储层段岩石力学参数预测结果

    Figure  6.   Prediction results of rock mechanics parameters in reservoir section of Well X1

    表  1   模型评估结果

    Table  1   Model evaluation results

    参数均方差平均绝对误差决定系数
    抗压强度2.220.880.94
    弹性模量1.291.210.96
    泊松比2.502.420.89
    下载: 导出CSV
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  • 收稿日期:  2024-05-06
  • 修回日期:  2024-09-04
  • 网络出版日期:  2024-09-24
  • 刊出日期:  2024-09-24

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