Table 2 Average values of activation energy of different stage using the methods.

From: Investigation of pyrolysis behavior shale gas oil-based drilling cuttings kinetics and product characteristics

Stage

FR

OFW

KAS

Starink

Eα(kJ/mol)

R2

Eα(kJ/mol)

R2

Eα(kJ/mol)

R2

Eα(kJ/mol)

R2

I

161.0

0.99

157.6

0.99

142.3

0.98

142.9

0.99

II

182.1

0.99

174.6

0.99

172.7

0.99

171.0

0.98

III

203.5

0.99

193.3

0.99

183.5

0.99

184.2

0.99

Mean

182.2

–

175.2

–

166.2

–

166.0

–

  1. Bold indicates that FR method yields the highest average activation energy , followed by OFW , while the KAS and Starink methods produce significantly lower and very similar averages.
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