A Prediction Model of Oil Cracked Gas Resources and Its Application in the Gas Pools of Feixianguan Formation in NE Sichuan Basin, SW China

Figure 4

Mass conservation in the process of crude oil pyrolysis. (a) Triangular diagram for the changes in quality percentage of gas, liquid, and solid pyrolysates in crude oil pyrolysis (pyrolysis data); (b) curves of the quality yield of gas, liquid, and solid pyrolysates in crude oil pyrolysis (kinetic calculation data). 𝑎: Quality yield of total gas 20°C/h; 𝑏: quality yield of residual liquid hydrocarbon 20°C/h; 𝑐: quality yield of pyrobitumen 20°C/h; 𝑎^′: quality yield of total gas 2°C/h; 𝑏^′: quality yield of residual liquid hydrocarbon 2°C/h; 𝑐^′: quality yield of pyrobitumen 2°C/h; 𝑑: quality balance curve 20°C/h, at any time 𝑑=𝑎+𝑏+𝑐≈1; 𝑑^′: quality balance curve 2°C/h, at any time 𝑑^′=𝑎^′+𝑏^′+𝑐^′≈1.

(a) Triangular diagram for the changes in quality percentage of gas, liquid, and solid pyrolysates in crude oil pyrolysis (pyrolysis data)

(b) Curves of the quality yield of gas, liquid, and solid pyrolysates in crude oil pyrolysis (kinetic calculation data)