Using fluid loss control solution or lowering liquid-column positive pressure differential (by using low-density killing fluid) can effectively avoid abnormal fluid loss during overbalanced well workover and guarantee productivity recovery after well workover.
MSCs from bone marrow, peripheral blood and synovial fluid were isolated by using Ficoll density gradient method with small modifications [ 24, 30, 36] and seeded into culture plates.
On one hand, the particle sedimentation problem of ER fluids is expected to be overcome by using low density polymer or hollow sphere as core.
Volume fractions were calculated by using a density value of 2.25 g cm−3 [28] for graphene oxide and the experimental densities obtained in this work for base fluid.
Neutrophils were isolated by using density gradients.
The cerebrospinal fluid (CSF) was simulated explicitly as a hydrostatic fluid by using a surface-based fluid modeling method.
Liquid densities usually are measured by using electronic instruments called density meters or pycnometers.
Computation of the axial momentum flow waveform is similar to volume flow; the same ROI is used, however the velocity values at each pixel are squared and multiplied by the fluid density.
Results also indicate that pressure signatures during cement circulation are dominated by fluid density, volume, and rate, and not by sensor assemble geometries used to diagnose the operation.
The bulge wave speed is governed by internal fluid density and tube distensibility.
