Sentence examples for migration of coal from inspiring English sources

The brittle property of coal matrix and overflushing operation make the migration of coal fines inevitable.

To investigate the migration of coal fine particles in gas-liquid flow, the gas-liquid-solid three-phase flow experiments were carried out.

However, LeFevre et al. interpreted their findings of high black pigment scores in liver and spleen of coal miners differently namely, as migration of coal dust in the pneumoconiotic lung into pulmonary lymphatics and then to the systemic circulation, and also as migration of coal mine dust laden macrophages through the walls of pulmonary blood vessels.

A method using multi-fluid Eulerian computational fluid dynamics (CFD) model to study the migration of pulverized coal in coal-bed methane (CBM) wellbore is presented in this paper.

The continuous dewatering resulted in decreased bottom hole pressure and migration of gas from coal matrix to cleat structure and finally to well-bore area.

Further from the well bore, the swelling and migration of clays in coal cleat networks can plug pore throats and have negative impacts on the reservoirs permeability (Bai et al. 2015; Yao et al. 2016), which is also an important topic but in our current study we are focused on the generation of fines at the wellbore.

This study investigated the behaviors of particle migration within fractures of coalbed methane (CBM) reservoirs using laboratory simulation technology.

By contrast, the widely existing carbon isotope reversal in Es4 gas in the central part of Wenliu is related to the long-term migration and enrichment of coal-type gas from Carboniferous-Permian rocks.

But the increasing rate of permeability damage slows down, revealing that the damage of FVS to permeability mainly occurs in the initial period of coal fines migration.

This facility can be used to measure the evolution of coal deformation and migration of originally existing gas in coal.

Mechanization and the decline of coal forced significant migrations from the region but many who left yearned for their hollers.