Settling velocity or depositional velocity is considered a key parameter to account for in the drilling technology of oil and gas wells as well as hydrocarbon processing since an accurate estimation of this parameter allows the transport of cuttings efficiently, avoids non-productive time, and helps avoid costly problems. Understanding the settling velocity in fluid with high salinity will help for the better separation of oil and natural gas streams in processing facilities. Although a great amount of effort was given to rheology and settling velocity measurements for power-law fluid and Bingham fluids, there are limited studies available in the literature for Herschel–Bulkley (H–B) fluid with salinity. The present study analyzes the fluid rheology of non-Newtonian fluids with, and without, salinity. Moreover, experiments have been conducted to measure the settling velocity of different diameters of solid particles through Herschel–Bulkley fluids with various salinity conditions. For the rheology analysis, it is found that higher weight percentages of NaCl lead to low values of shear stresses. As well, higher weight percentages of CaCl2 concentration result in a slight increase in shear stresses per a given shear rate. On the other hand, higher percentages of salt concentration cause an increase in the terminal velocity.

沉降速度或沉积速度被认为是油气井钻井技术以及碳氢化合物加工中需要考虑的关键参数，因为对该参数的准确估计可以有效地输送钻屑，避免非生产时间，并有助于避免代价高昂的问题。了解高盐度流体中的沉降速度将有助于在加工设施中更好地分离石油和天然气流。尽管对幂律流体和宾汉流体的流变学和沉降速度测量付出了大量努力，但文献中关于含盐度的 Herschel-Bulkley (H-B) 流体的研究有限。本研究分析了具有和不具有盐度的非牛顿流体的流体流变学。而且，已经进行了实验以测量不同直径的固体颗粒在不同盐度条件下通过 Herschel-Bulkley 流体的沉降速度。对于流变学分析，发现较高的 NaCl 重量百分比导致较低的剪切应力值。同样，较高重量百分比的 CaCl2 浓度会导致每给定剪切速率的剪切应力略有增加。另一方面，较高百分比的盐浓度会导致终端速度增加。较高重量百分比的 CaCl2 浓度会导致每给定剪切速率的剪切应力略有增加。另一方面，较高百分比的盐浓度会导致终端速度增加。较高重量百分比的 CaCl2 浓度会导致每给定剪切速率的剪切应力略有增加。另一方面，较高百分比的盐浓度会导致终端速度增加。