石油钻井震击工具向上震击动载荷计算  

Calculation of dynamic load of fishing jar in jarring up

作　　者：孙仁甫[1] 黄蓓蕾 

机构地区：[1]河北农业大学,河北省保定市071001

出　　处：《石油机械》1997年第5期4-7,共4页China Petroleum Machinery

摘　　要：美国BowenTools公司将震击器井下动载荷定为上提拉力的4～6倍。我国的打捞专家根据经验判断为2倍多，而有的学者计算出上击器的打击力为上提拉力的9倍多。文中根据上击器的工作原理，在三个假设条件下，推导出上击动载荷的计算公式。通过实例计算出上击动载荷为上提拉力的3．2倍。必须注意的是，在假设条件下计算上击动载荷，既忽略了部分能量损失，又进行了简化处理，因而计算值比实际值偏大。According to the working principle of a top jar, the equation for calculating the dynamic load of the jar in jarring up is derived under three assumed conditions, and an example of calculation shows that the dynamic load is 3. 2 times the pulling foree of the jar. It must be noted that, in the calculation, simplification is conducted and part of the energy loss is ignored, therefore the calculated value is larger than the actual value.

关 键 词：解卡 震击器 上击器 动载荷 石油 钻井 

分 类 号：TE921.902[石油与天然气工程—石油机械设备]