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钻井流体液相组分密度的温度压力修正模型

李旭,  任胜利,  刘文成,  赵丹汇,  廖茂林,  林黎明

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文章导航 > 钻井液与完井液  > 2020 >  37(2): 168-173
李旭, 任胜利, 刘文成, 赵丹汇, 廖茂林, 林黎明. 钻井流体液相组分密度的温度压力修正模型[J]. 钻井液与完井液, 2020, 37(2): 168-173. doi: 10.3969/j.issn.1001-5620.2020.02.006
引用本文: 李旭, 任胜利, 刘文成, 赵丹汇, 廖茂林, 林黎明. 钻井流体液相组分密度的温度压力修正模型[J]. 钻井液与完井液, 2020, 37(2): 168-173. doi: 10.3969/j.issn.1001-5620.2020.02.006
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LI Xu, REN Shengli, LIU Wencheng, ZHAO Danhui, LIAO Maolin, LIN Liming. Study on Temperature and Pressure Correction Model for Predicting Liquid Phase Density of Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(2): 168-173. doi: 10.3969/j.issn.1001-5620.2020.02.006
Citation: LI Xu, REN Shengli, LIU Wencheng, ZHAO Danhui, LIAO Maolin, LIN Liming. Study on Temperature and Pressure Correction Model for Predicting Liquid Phase Density of Drilling Fluids[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(2): 168-173. doi: 10.3969/j.issn.1001-5620.2020.02.006
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钻井流体液相组分密度的温度压力修正模型

doi: 10.3969/j.issn.1001-5620.2020.02.006

  • 1. 中海油田服务股份有限公司油田化学事业部, 河北廊坊 065201;

  • 2. 北京科技大学机械工程学院, 北京 100083;

  • 3. 中国科学院力学研究所流固耦合系统力学重点实验室, 北京 100190

详细信息
    作者简介:

    李旭,工程师,1985年生,2008年毕业于中国石油大学(北京)获得工学学士学位,主要从事固井工程及工程软件研究。E-mail:lixu8@cosl.com.cn

  • 中图分类号: TE254

Study on Temperature and Pressure Correction Model for Predicting Liquid Phase Density of Drilling Fluids

  • 1. Oilfield Chemistry Department, China Oilfield Services Limited, Hebei 065201;

  • 2. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083;

  • 3. Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190

    摘要
  • 摘要: 钻井流体密度是决定井筒中压力分布的主要因素，因此对钻井流体密度的精确计算是进行井筒压力控制，避免井涌、井喷或者井漏等井下异常情况的关键。由于钻井流体中存在着液相组分，其密度会随着温度和压力的变化而改变，从而使得钻井流体在地层中的密度与其地面测量结果不一致，鉴于此，需要对钻井流体的液相组分密度进行温压修正。通过对不同类型钻井流体的实验研究，在API标准提供的温压修正模型的基础上，通过引入温度的二次方项，将温度对钻井流体液相密度的非线性影响纳入考虑，并以此形成了改进型温压修正模型。通过与实验数据的对比分析，改进型温压修正模型的密度预测结果普遍优于API模型的预测结果。特别地，对于那些对高温敏感的钻井流体，采用改进型温压修正模型能够显著提升其井下当地密度的预测精确度。

     

    Abstract: The density of a drilling fluid is the main factor affecting the pressure distribution along the wellbore. An accurate calculation of the density of a drilling fluid is the key to the avoidance of well kick, blowout and mud losses. Since liquid phase in drilling fluid has densities changing with pressure and temperature, the density of the drilling fluid measured at the surface disagrees with the real density of the drilling fluid downhole. This density disagreement of the liquid phase has to be corrected taking into account the temperature and pressure in the hole. This paper presents a modified temperature and pressure correction model for calculating the real downhole density by introducing a quadratic term of temperature into the API temperature-pressure correction model based on laboratory experiments. Comparing the calculation results with the new model with the experimental data, it was found the new model is superior to the API model. For a drilling fluid whose density is sensitive to high temperature, the new model predicts downhole drilling fluid density with much higher accuracy.

     

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    • 参考文献(18)
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出版历程
  • 收稿日期:  2019-11-19
  • 刊出日期:  2020-04-28

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