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基于ABAQUS的裂缝性漏失过程动态模拟研究

陈晓华,  邱正松,  杨鹏,  郭保雨,  王宝田,  王旭东

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文章导航 > 钻井液与完井液  > 2019 >  36(1): 15-19
陈晓华, 邱正松, 杨鹏, 郭保雨, 王宝田, 王旭东. 基于ABAQUS的裂缝性漏失过程动态模拟研究[J]. 钻井液与完井液, 2019, 36(1): 15-19. doi: 10.3969/j.issn.1001-5620.2019.01.003
引用本文: 陈晓华, 邱正松, 杨鹏, 郭保雨, 王宝田, 王旭东. 基于ABAQUS的裂缝性漏失过程动态模拟研究[J]. 钻井液与完井液, 2019, 36(1): 15-19. doi: 10.3969/j.issn.1001-5620.2019.01.003
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CHEN Xiaohua, QIU Zhengsong, YANG Peng, GUO Baoyu, WANG Baotian, WANG Xudong. Dynamic Simulation of Mud Losses into Fractured Formations Using ABAQUS Software[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(1): 15-19. doi: 10.3969/j.issn.1001-5620.2019.01.003
Citation: CHEN Xiaohua, QIU Zhengsong, YANG Peng, GUO Baoyu, WANG Baotian, WANG Xudong. Dynamic Simulation of Mud Losses into Fractured Formations Using ABAQUS Software[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(1): 15-19. doi: 10.3969/j.issn.1001-5620.2019.01.003
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基于ABAQUS的裂缝性漏失过程动态模拟研究

doi: 10.3969/j.issn.1001-5620.2019.01.003

  • 1. 中国石油大学(华东)石油工程学院, 山东青岛 266580;

  • 2. 中国石油化工股份有限公司华北油气分公司, 河南郑州 450006;

  • 3. 中国石油集团长城钻探工程技术研究院, 辽宁盘锦 124010;

  • 4. 中石化胜利石油工程有限公司钻井工程技术公司, 山东东营 257064

基金项目: 

国家重大专项（2017ZX05032-004-005）、国家自然基金石油化工联合基金（U1562101）、国家科技重大专项（2016ZX05020-004）、国家科技重大专项（2016ZX05048）

详细信息
    作者简介:

    陈晓华,1984年生,中国石油大学(华东)油气井工程专业在读博士研究生,现在主要从事钻井液技术研究工作。电话15650189135;E-mail:S16020199@s.upc.edu.cn

  • 中图分类号: TE282

Dynamic Simulation of Mud Losses into Fractured Formations Using ABAQUS Software

  • 1. School of Petroleum Engineering, China University of Petroleum(East China), Shandong, Qingdao 266580;

  • 2. Sinopec North China Company, Henan, Zhengzhou 450006;

  • 3. Engineering Technology Research Institute, Great Wall Drilling Company of CNPC, Liaoning, Panjin 124010;

  • 4. Branch of Drilling Engineering Technology, Sinopec Shengli Petroleum Engineering Company Ltd., Shandong, Dongying 257064

    摘要
  • 摘要: 裂缝性漏失最为普遍、复杂且难以解决，由于现场难以对其漏失过程进行准确预测，导致目前裂缝性漏失堵漏成功率较低。基于损伤力学原理，利用ABAQUS软件中的cohesive单元模拟漏失过程中裂缝的起裂和扩展，建立了三维地层裂缝性动态漏失模型。通过分析漏失过程中裂缝形态、井周应力及地层孔隙压力的变化情况，得到了裂缝性漏失过程的动态规律。研究结果表明，随着漏失时间的增加，裂缝的开度受扩展压力的影响先降低后逐渐增加；随着裂缝开度的增加，裂缝长度的增长幅度逐渐变缓；漏失裂缝的扩展使得裂缝开口（0°位置）附近井周压应力逐渐下降，在垂直于裂缝开口附近井周压应力逐渐增加；井周附近孔隙压力受钻井液侵入的影响，随着时间的增加逐渐增大。

     

    Abstract: Mud losses into fractured formations are the most common mud losses encountered in drilling fractured formations, and they are most complex and most difficult to control. Since mud losses into fractured formations are difficult to predict accurately in field operations, the success rate of bringing them under control is relatively low. Based on the principles of damage mechanics, the initiation of fracturing and propagation of the fracture during mud losses was simulated using the cohesive module of the ABAQUS software, and a 3D model describing the dynamic process of mud losses into fractured formations was established. The dynamic patterns of mud losses into fractured formations was obtained by analyzing the shape of fractures, the well circumferential stress and the pore pressures during mud losses. The study results showed that as the time of mud losses went on, the effect of the propagation pressure on the opening of a fracture was gradually weakening at first and then was increasing. As the opening of the fracture increased, the length of the fracture was increasing more and more slowly. The propagation of a fracture into which the mud was losing caused circumferential compressive stress around the mouth of the fracture (near the 0° position) to gradually decrease, while the circumferential compressive stress perpendicular to the mouth of the fracture was increasing. Pore pressures near the wellbore were affected by the invasion of drilling fluid, and were gradually increasing with time.

     

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出版历程
  • 收稿日期:  2018-10-09
  • 刊出日期:  2019-02-28

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