聚合物产出液在杆管环空中的流动

FLOW OF POLY OUTPUT LIQUID IN ROD AND TUBE ANNUAR SPACE

郑俊德 孙智 任刚 苗振宝

Zheng Junde Sun Zhi Ren Gang Miao Zhenbao

中国石油勘探开发研究院, 北京 100083 大庆油田有限责任公司, 黑龙江大庆 163000 河南油田分公司, 河南南阳 473132

室内聚合物的溶液流变性测试表明,大庆油田应用的聚合物溶液的流变性符合幂律模式。运用非牛顿流体力学理论和数理方法,考虑抽油杆的上、下往复运动,建立了杆管同心与偏心 2种情况下速度、流量与压力梯度方程,并得到近似解。计算实例表明:杆管环空中流体的速度随杆的上、下运动不断地变化。杆管同心时,非牛顿性越强,速度最大值越偏离几何中心;杆管偏心时,θ=0,n值越小,无因次最大速度越大,θ=π时,两者有差别。

Laboratory testing showed that rheological property of polymer solution used in Daqing Oilfield agree with power-law mode. According to non-Newtonian fluid mechanics theory and mathematical method, and the plunger moving property taken into account, fluid velocity distribution, flow rate and pressure gradient equations were set up in the conditions concentric and eccentric of rod and tube annular space, and approximate solution were obtained. Calculating example showed that fluid velocity in rod and tube annular space changes steadily along with rod moving of up and down. In the condition of concentric of rod and tube, the stronger non-Newtonian property is,when θ=0,the smaller n is, the larger dimensionless maximum velocity is; when θ=π, the two dimensionless maximum velocities differ slightly in the condition of charging n.

10.3969/j.issn.1000-7393.2001.05.014