应近似地按柱塞位于下止点时的环隙计算抽油泵的环隙静、动态漏失量。
And the static and dynamic leakage of the pump should be approximately calculated according to the annulus at the end of the plunger's downstroke.
文末算例表明，渐缩间隙模型的环隙漏失量比平行平板模型的环隙漏失量小得多。
Calculations show that the annular clearance leakage by the mode of gradually reducing clearance is much less than that by the mode of equidimension clearance.
本文通过试验得出了碟形圈密封漏失量的经验公式，并对轴向振动的影响进行了修正。
A empirical equation of the leakage of Belleville ring seal is presented, and a correction for the axial vibration is given.
但它们在高温条件下容易导致粘度降低且在裂缝中漏失量很大，上述缺点限制了其在水力压裂和压裂充填措施中的应用。
But they may easily produce low viscosities and high fluid leak off from the fracture at high temperature, which limit their applications to hydraulic fracturing and fracture-packing treatments.
试验结果表明：加了纳米颗粒材料的粘弹性表面活性剂(VES)溶液可以在高温下保持较高粘度且可控制其增产液的漏失量。
The experimental results demonstrated that nanoparticles added to a VES solution could maintain viscosity at high temperature and control the fluid loss of VES stimulation fluid.
试验结果表明：加了纳米颗粒材料的粘弹性表面活性剂(VES)溶液可以在高温下保持较高粘度且可控制其增产液的漏失量。
The experimental results demonstrated that nanoparticles added to a VES solution could maintain viscosity at high temperature and control the fluid loss of VES stimulation fluid.
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