钻杆失效中流场诱导因素模拟分析  

Numerical Simulation Analysis of Flow Field Inducing Factors in Drill String's Failure

作　　者：鲜奇飚[1] 林元华[1] 李玉林[2] 朱红钧[1] 夏天果[1] 严仁田[1] 

机构地区：[1]西南石油大学石油管力学和环境行为重点实验室,成都610500 [2]塔里木油田分公司,新疆库尔勒841000

出　　处：《石油矿场机械》2010年第6期35-38,共4页Oil Field Equipment

基　　金：新世纪优秀人才支持计划(NCET-08-0907);四川省杰出青年学科带头人培养基金(06ZQ026-028);中石油应用基础研究项目(2008A-3005)

摘　　要：在油气井钻井过程中,约有60%的钻柱失效都与钻井液有关,其中突发区域为加厚过渡带。准确分析管内流体流动对钻杆的影响,以便找到钻杆失效的关键因素。采用有限体积法的数学模型对不同结构尺寸和不同钻井液流速条件下的钻杆内流场进行了模拟,获得了不同条件下的压力场分布。计算结果可以为优化钻杆尺寸、合理选择钻井液流速工艺提供一定的参考。In the drilling process of oil and gas well,about 60% of the drill string＇s failure is related to drilling fluid and the thickened transitional area is where the outbreak located.An accurate analysis,proceeding from the fluid and the structure of the drilling pipe,of how the drill pipe is influenced by the fluid in the pipe,is crucial for the reduction of failure.Therefore,through the simulation of the flow field in the drilling pipe of different size and different fluid flowing velocities,using the mathematical mode of finite volume method,the pressure field distribution can be acquired,whose results can provide a reasonable reference for the optimization of the size of drilling pipe as well as the technology of drilling fluid.

关 键 词：钻杆 加厚过渡带 腐蚀 有限体积法 数值模拟 

分 类 号：TE921.2[石油与天然气工程—石油机械设备]