To identify the genesis of natural gases, the three categories of natural gases (shallow gas <1,500 m, middle gas 1,500 3,500 m, and deep gas >3,500 m) were put into the genesis identification template built by Dai (1993).
Miscible gas injection falls under the same category of gas methods and therefore has the same mechanisms of oil recovery as other gas methods.
Carbon nanotubes (CNTs) have aroused extensive attentions as a new category of gas sensor materials owing to their outstanding performance for detecting specific gas among a variety of ones through diverse gas responses.
When gas content is high and all boundary conditions are met, both rockbursts and earthquakes can trigger unusual gas emission, and sometimes the gas gushes are violent enough to fit into the category of gas outbursts.
A category of gas sensing hollow core waveguide that was operated in near infrared was designed to solve their major obstacles in application including high scattering and high losses.
Delphi, for example, makes a sensor similar to one in the Phaeton that monitors the air for two broad categories of noxious gases.
Effect of different design parameters has been evaluated for three distinct categories of fluids namely natural gas, gas-condensate mixture, and gas-oil mixtures.
There are three general categories of emboli: arterial, gas, and pulmonary.
If it transpires that copernicium and flerovium are gaseous metals at or near room temperature, as some calculations have suggested, the category of elemental gases may need to be sub-divided into metallic and nonmetallic gases.
For ease of discussion and because of its relevance for bioenergy production, we focus the discussion here on one category of emissions greenhouse gases (GHG).
