陈昆鹏修改论文4.doc

中国石油大学(华东)本科毕业设计(论文) 本科毕业设计(论文) 题目: 水平井射流冲砂数值模拟学生姓名:陈昆鹏学号: 11092110 专业班级:海洋油气工程 12-1 班指导教师:李爱华 201 6年6月 18 中井射流冲砂数值模拟摘要水平井射流冲砂在水平井产出过程中很是重要。通过调研文献,总结了常见的和改进的射流冲砂方法。根据流体力学的知识, 以水平井射流正冲砂例,应用 Gambi t和 Fluen t 软件,模拟水平井射流正冲砂同心环空流场情况,从而得到同心环空内流体的速度和压强情况。绘制了流体截面压强分布等值线图、速度分布等值线图、砂粒运动轨迹图、砂粒xy 图及速度分布矢量图。得到随着流体的流动,流体的速度和压强逐渐减小。但在同一截面压强分布均匀,流速中间环空较大,周围边界速度较小,在壁面处几乎为零。获得同样一个流动速度下,砂粒直径越大,砂粒就越容易沉降下来,砂床就越容易形成。同样一个砂粒直径,流动的速度越大,砂粒就越不容易沉降下来。关键词:水平井;射流冲砂;同心环空; Fluent ;数值模拟中国石油大学(华东)本科毕业设计(论文) 3 Numerical simulation of jet flushing sand in horizontal well Abstract The jet flushing sand of horizontal well is very important in the production process of horizontal well. Through the investigation and study ,I summarized mon jet sand flushing method and the improved jet sand washing method. According to the knowledge of fluid mechanics,Gambit and Fluent software areapplied to the jet flow in horizontal well,Simulation of concentric annular flow field of jet flow in horizontal well,In order to obtain the velocity and pressure distribution of the fluid in concentric draw a section of fluid pressure distribution, velocity distribution, particle movement trajectory, velocity vector diagram and sand the flow of the fluid, the velocity and pressure of the fluid decreases in the same section, the pressure distribution is uniform, the velocity of the middle ring is larger, the surrounding boundary is smaller, and the wall is almost the same velocity, the larger diameter of sand, sand easier settlement, the easier the formation of sand same sand diameter, the greater the flow rate, sand isnot easy sedimentation, sand bed isnot easy to form. Key w ords : Horizontal well; jet washing sand; concentric annulus; Fluent; numerical simulation 中国石油大学(华东)本科毕业设计(论文) 4 目录第1章绪论............................................................................................................................. 1 研究背景...............................