In the pigging of long-distance gas-liquid pipelines, the sealing disks and the inner wall of
the pipeline will inevitably wear out. This may cause the diameter of the pig seal disks to be …

Horizontal wells are more likely than vertical wells to have enlarged wellbore sections due to
borehole instability. However, there is scarce research on borehole cleaning of horizontal …

In-situ formation and flow of emulsions during nanofluid flooding process is considered
innovative for chemical enhanced oil recovery (cEOR). In this study, a series of nanoparticle …

To explore the influence of the isolation ball in a crude oil pipeline running over complex
terrain, a “U” undulating crude oil pipeline with a large drop was taken as a practical case …

In our previous article (Gao et al. 2020), a mathematical model including elastic and yield
components but not viscous component was developed to predict the wax plug …

Abstract Bypass Pipeline Inspection Gauges (PIGs) are widely employed as the most
effective and economical devices for pipeline cleaning, maintenance, and inspection …

Natural gas pipeline pigging with speed excursions may lead to potential loss of inspection
data and possible dangers due to high acceleration; however, the operation relies heavily …

abstract The accurate estimation of model parameters is significant for the simulation,
evaluation, control, and optimization of photovoltaic systems. Recently, meta-heuristic …