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高温高压耦合条件下油基钻井液的流变特性规律及其数学模型

谢春林 杨丽丽 蒋官澄 敖天 曹峰 贺垠博 聂强勇

谢春林,杨丽丽,蒋官澄,等. 高温高压耦合条件下油基钻井液的流变特性规律及其数学模型[J]. 钻井液与完井液,2021,38(5):568-575 doi: 10.12358/j.issn.1001-5620.2021.05.005
引用本文: 谢春林,杨丽丽,蒋官澄,等. 高温高压耦合条件下油基钻井液的流变特性规律及其数学模型[J]. 钻井液与完井液,2021,38(5):568-575 doi: 10.12358/j.issn.1001-5620.2021.05.005
XIE Chunlin, YANG Lili, JIANG Guancheng, et al.Rheological characteristics of oil base drilling fluids and its mathematical model under coupled hthp conditions[J]. Drilling Fluid & Completion Fluid,2021, 38(5):568-575 doi: 10.12358/j.issn.1001-5620.2021.05.005
Citation: XIE Chunlin, YANG Lili, JIANG Guancheng, et al.Rheological characteristics of oil base drilling fluids and its mathematical model under coupled hthp conditions[J]. Drilling Fluid & Completion Fluid,2021, 38(5):568-575 doi: 10.12358/j.issn.1001-5620.2021.05.005

高温高压耦合条件下油基钻井液的流变特性规律及其数学模型

doi: 10.12358/j.issn.1001-5620.2021.05.005
基金项目: 国家自然科学基金-面上项目“聚合物拓扑结构和序列结构影响其流变调节能力的机理及结构优化研究”(51874329)
详细信息
    作者简介:

    谢春林,在读硕士,1997年生,就读于中国石油大学(北京)海洋油气工程专业,从事钻井液相关研究。E-mail:1040556173@qq.com

    通讯作者:

    杨丽丽,副教授,现在从事钻井液相关研究工作。E-mail:yangll@cup.edu.cn

  • 中图分类号: TE254

Rheological Characteristics of Oil Base Drilling Fluids and Its Mathematical Model under Coupled HTHP Conditions

  • 摘要: 为了探究高温、高压耦合条件下温度、压力对油基钻井液流变性能的影响规律,利用超高密度高温高压钻井液流变仪Fann iX77分别测试了各个高温、高压耦合条件下密度为1.4、1.8、2.2、2.4 g/cm3的抗高温油基钻井液体系的流变特性。结果显示,油基钻井液表观黏度和塑性黏度随温度的升高而逐渐降低,随压力的增大而逐渐增大;动切力随温度的升高表现出先增高后降低的趋势;当温度超过一定值时(160 ℃左右),高温作用对各个高密度油基钻井液流变性的影响都将大大减弱。将所测得的各个高温、高压耦合节点条件下的流变参数进一步分析后得到油基钻井液的温度、压力二元数学模型,误差分析结果显示,该模型对各密度体系的实验测量数据均具有良好的拟合性,可决系数R均大于0.96,因此该数学模型能够较为精确地预测出各个温度、压力耦合条件下油基钻井液的流变性能。

     

  • 图  1  1.4 g/cm3油基钻井液流变性能随温度、压力的变化情况

    图  2  1.8 g/cm3油基钻井液流变性能随温度、压力的变化情况

    图  3  2.2 g/cm3油基钻井液流变性随温度、压力的变化情况

    图  4  2.4 g/cm3油基钻井液流变性能随温度、压力的变化情况

    图  5  油基钻井液lnAV随温度的变化趋势

    图  6  油基钻井液lnAV随压力的变化趋势

    表  1  4种密度油基钻井液的流变性能

    ρ/
    g·cm-3
    T老化/
    PV/
    mPa·s
    YP/
    Pa
    YP/PV/
    Pa/( mPa·s)
    Gel/
    Pa/Pa
    φ6/φ3ES/
    V
    1.4未老化19.07.50.393.0/3.07/4900
    18021.51.80.081.0/1.03/3695
    1.8未老化16.02.50.162.0/2.02/1930
    22027.02.50.091.0/1.52/1421
    2.2未老化43.010.00.234.0/4.09/61241
    22058.55.00.093.0/7.04/3494
    2.4未老化40.011.00.284.0/4.010/91465
    22059.06.50.113.0/7.05/3530
      注:流变性均在65 ℃下测得
    下载: 导出CSV

    表  2  190 ℃各压力下油基钻井液的流变性能

    P/MPaAV/mPa·sPV/mPa·sGel/(Pa/Pa)
    2085.92.1
    4526.79.916.8
    7027.710.517.2
    9530.713.217.5
    12032.815.717.1
    下载: 导出CSV

    表  3  各密度钻井液表观黏度数学模型及误差分析

    ρ/
    g·cm−3
    AV0/
    mPa·s
    γ1γ2γ3R
    1.423.39.72×10−5−2.348×10−29.086×10−30.98
    1.829.58.82×10−5−2.251×10−28.532×10−30.96
    2.263.59.483×10−5−2.529×10−29.328×10−30.99
    2.465.51.471×10−4−3.085×10−21.042×10−20.98
      注:测试温度65 ℃,测试压力0. 1 MPa
    下载: 导出CSV

    表  4  各密度油基钻井液塑性黏度数学模型及误差分析

    ρ/
    g·cm−3
    AV0/
    mPa·s
    η1η2η3R
    1.421.51.402×10−4−3.032×10−21.063×10−20.98
    1.827.08.188×10−5−2.358×10−29.132×10−30.99
    2.258.57.177×10−5−2.075×10−28.21×10−30.98
    2.459.08.703×10−5−2.254×10−29.243×10−30.97
      注:测试温度65 ℃,测试压力0.1 MPa
    下载: 导出CSV
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  • 收稿日期:  2021-05-26
  • 刊出日期:  2021-10-01

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