Figure 1

Gas generation from Floyd shale under helium flow at 50°C for 24 hours. The effluent gas was passed through an ice trap (1/4 inch copper tubing), then directly into a flame ionization detector (FID) where the signal was recorded over 24 hours. The sample was a Mississippian Floyd shale (well cuttings) from a well in the Black Warrior Basin in Clay County, Mississippi (API = 23025200660000; +33.79, -88.820; 1582 m); Rock-Eval, TOC = 4.4; S1 = 1.6; S2 = 8.7; S3 = 0.29; Tmax = 448. About 0.18 mg hydrocarbons/(g shale) was generated over 24 hours based on the integrated FID peaks calibrated with a standard mixture.