Sentence examples for coal core from inspiring English sources
The layer closer to the coal core has a higher but later peak value of the devolatilization rate.
Constant temperature of coal core sample.
Primary and tertiary cleat network was identified on coal core sample (Fig. 14).
The image of the coal core sample was taken using high-resolution 30.4 megapixel DSLR cameras.
The image was captured before and after the flow of gas through coal core samples.
Open image in new window Fig. 14 SEM morphologies of polymer coating layer on coal core.
In this work, coal samples from Baode Block, northeastern Ordos Basin were made into coal cores for FVS analysis under different initial permeabilities, injection volumes and injection intensities.
Total 36 coal cores collected from 3 adjacent coalmines in the southern Qinshui basin were investigated, including analysis of logging data from the drilling wells.
Whenever coal cores cannot be recovered to be studied in the laboratory, reconstituted coal samples from crushed granular coal can help estimate the coal matrix transport and adsorptive-mechanical properties.
Thus, NMR experiments for samples treated at different temperatures (from 25 °C to 375 °C) were designed to study the variation of petrophysical properties of three Chinese coal cores with different ranks.
One unconfined compressive strength (UCS) test and four high-pressure triaxial stress tests were conducted on coal cores in order to best emulate the key issues regarding horizontal wellbore stability, coal strength, permeability change, and coal fines generation during the life cycle of a coalbed methane reservoir.
