Material Exchange and Migration between Pore Fluids and Sandstones during Diagenetic Processes in Rift Basins: A Case Study Based on Analysis of Diagenetic Products in Dongying Sag, Bohai Bay Basin, East China

Table 2

Element component characteristics of authigenic kaolinites in Es of Dongying Sag.

Well ID	Depth (m)	Type	Element content percentage (mol%)
			O	Al	Si	K	Fe
S 126	3386.40	K1	60.15	18.38	21.47	—	—
S 126	3386.40	K1	60.37	18.22	21.41	—	—
S 126	3428.60	K1	52.99	21.16	25.85	—	—
S 126	3428.60	K1	56.62	19.51	23.87	—	—
X 154	2935.90	K1	58.34	18.87	22.79	—	—
N 105	3096.20	K1	56.61	20.24	23.15	—	—
H 159	2960.30	K1	68.16	13.79	18.05	—	—
S 126	3513.1	K1	55.02	20.14	24.84	—	—
S 126	3450.40	K1	65.32	16.02	18.66	—	—
S 128	3452.40	K1	51.47	21.51	27.02	—	—
S 126	3450.40	K2	48.13	19.94	27.70	2.23	2.00
S 126	3450.40	K2	50.80	19.61	28.28	0.52	0.78
S 126	3450.40	K2	50.55	13.47	31.95	1.20	2.84
N 105	3096.20	K2	56.90	15.58	25.13	0.76	1.63
N 105	3096.20	K2	51.08	20.97	27.19	0.76	—
N 105	3096.20	K2	49.41	22.03	28.07	0.49	—
S 126	3513.1	K2	55.00	20.44	23.02	0.68	0.86
S 126	3513.1	K2	53.64	18.30	25.27	1.63	1.16
S 127	3451.40	K2	48.95	20.63	28.01	0.95	1.46
S 130	3454.40	K2	47.52	21.64	27.50	—	3.34
S 131	3455.40	K2	52.62	18.50	25.05	0.87	2.96