Because Ford has failed to improve the fuel economy of its cars and trucks sufficiently, and because it now sells a higher proportion of gas-guzzling trucks than it did 17 years ago, its new vehicles get fewer miles per gallon, on average, than the ones it built in 1984.
The proportion of gas extraction from panel 40110 over the three periods is presented in Fig. 8.
Zhou et al. (2010) studied the proportion of gas flow from each source with a surface borehole.
The proportion of gas extracted during the planning period (10.4 %) is higher than the theoretical value (3.2 %–6.6 %).
At inlet of slug flow, a significant proportion of gas was rich in the second branch channel at high inlet gas superficial velocity.
This is because within a certain range, the larger the uplift, the more gas is desorbed from the coal measure, resulting in a large proportion of gas accumulated in the gas field in the uplift period (Fig. 9).
With the growth of proven natural gas reserves, the development of gas turbine technology and increased environmental pressures, the proportion of gas turbines in power generation has significantly increased in recent years.
With the surge of shale gas development, the amount and proportion of gas-fired power generation will be increased as well, while the power-to-gas technology will help with the integration of the intermittent excessive electric power [6].
Because the most important part of the system consists in non-boiling zone (i.e., no steam), we recalculated the H2S and CO2 concentrations considering liquid analysis, gas analysis, and average proportion of gas in the fluid.
Compared with Fig. 6, the proportion of gas extracted in the planning period (1.6 %) is lower than the theoretical value (3.2 %–6.6 %), resulting in an increase in gas extraction rates for the transitional and production periods.
