Fuel gas for domestic and commercial use was produced by this method in many places before «natural gas» from petroleum fields became more economical. (ramblingsdc.net)
Nanoparticles are ubiquitous in industrial applications ranging from drug delivery and biomedical diagnostics to developing hydrophobic surfaces, lubricant additives and enhanced oil recovery solutions in petroleum fields. (sciencedaily.com)
If your specialty is environmental regulation of petroleum fields, there is a greater chance of getting to know the right people at your local oil and gas association luncheons than at the state bar's lunch - and - learn. (getting-clients.com)