Control of the Cretaceous Paleofluid Potential on the Source-Distal Lithologic Reservoirs in the Western Tabei Area of the Tarim Basin

Table 1

Geochemical analysis of Paleogene and Cretaceous reservoirs in well M7.

Comparison of crude oil biomarker compounds in the M7 well area
Well no.	Stratigraphy	C19 tricyclic terpane/C21 tricyclic terpane	C19 tricyclic terpane/C23 tricyclic terpane	γ cerotane/C30 hopanoid	C30 diahopanes/hopanoid	C27 rearranged sterane/C27 sterane	Content of methyldibenz othiophene in aromatic hydrocarbons (%)	13C (%)
M12	E	0.653	0.801	0.157	0.231	0.776	0.51677	-29.9
M7	E	0.464	0.511	0.389	0.301	0.495	0.46611	-29.5
M12	K	0.253	0.242	0.291	0.198	0.493	0.47909	-31.2
M7	K	0.252	0.228	0.281	0.217	0.339	0.48321	-30.6
M7	O	0.391	0.323	0.267	0.204	0.322	0.50584	-30.1