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| 水力裂缝的缝高控制参数影响数值模拟研究 | |
| 引用本文： | 王瀚,刘合,张劲,吴恒安,王秀喜.水力裂缝的缝高控制参数影响数值模拟研究[J].中国科学技术大学学报,2011,41(9). |
| 作者姓名： | 王瀚 刘合 张劲 吴恒安 王秀喜 |
| 作者单位： | 1. 中国科学技术大学近代力学系,安徽合肥,230027 2. 中国科学技术大学近代力学系,安徽合肥230027;中国石油勘探开发研究院,北京100083 3. 中国石油大学(北京)石油和天然气工程学院,北京,102200 |
| 基金项目： | 中国石油科技创新基金项目(2010D-5006-0209)资助 |
| 摘 要： | 水力压裂是低渗油藏增产的重要手段,在工程中有着广泛的应用.以ABAQUS软件为平台,采用平面应变模型模拟油藏的流固耦合力学行为,用基于损伤力学方法的粘性单元模拟裂缝沿高度方向的起裂和扩展过程.对大庆油田某水平井的压裂过程进行数值模拟,得到的井口泵压曲线与现场施工测得的泵压曲线吻合良好,验证了模型的正确性和合理性.采用该模型研究了隔层与产层之间的地应力差、抗拉强度差与弹性模量差之间的耦合作用对裂缝高度的影响.结果表明,隔层的高应力、高强度和低模量能够较好地控制裂缝高度,这些结果对压裂工程设计有很好的参考价值. |
| 关 键 词： | 水力压裂 有限元 损伤力学 缝高 |
Numerical simulation of hydraulic fracture height control with different parameters |
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| WANG Han,LIU He,ZHANG Jin,WU Heng'an,WANG Xiuxi.Numerical simulation of hydraulic fracture height control with different parameters[J].Journal of University of Science and Technology of China,2011,41(9). | |
| Authors: | WANG Han LIU He ZHANG Jin WU Heng'an WANG Xiuxi |
| Institution: | WANG Han1,LIU He1,2,ZHANG Jin3,WU Heng'an1,WANG Xiuxi1(1.Department of Modern Mechanics,University of Science and Technology of China,Hefei 230027,China,2.Research Institute of Petroleum Exploration & Development,Petro China,Beijing 100083,3.School of Petroleum and Gas Engineering,China University of Petroleum,Beijing 102200,China) |
| Abstract: | Hydraulic fracturing is an important way to improve the productivity of the reservoir with low permeability and is widely used in oil engineering.A plane strain model of hydraulic fracture was established with the ABAQUS code.Coupling between solid deformation and fluid flow of the reservoir was considered in the model.The cohesive elements based on damage mechanics were adopted to simulate the initiation and propagation of the fracture height.The hydraulic fracture process of a horizontal well in Daqing wa... |
| Keywords: | hydraulic fracture finite element damage mechanics fracture height |
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