Diagenetic Fluid and Its Impact on Sandstone Reservoirs in the Southern Boxing Sag, Dongying Depression, Bohai Bay Basin, China

Table 5

Electronic probe microanalysis for carbonate cements in the sandstone (wt%).

Well	Depth (m)	MgO	Na2O	FeO	CaO	Al2O3	MnO	K2O	SrO	TiO2	Cr2O3	CO2	Total
F1	3314.6	0.27	0.00	0.16	53.89	0.03	1.44	0.00	0.04	0.00	0.00	43.67	99.50
		0.25	0.00	0.14	53.58	0.03	1.65	0.00	0.00	0.03	0.00	43.52	99.20
		8.99	0.00	15.06	30.89	0.04	0.54	0.02	0.10	0.00	0.00	43.73	99.37
		8.44	0.03	16.69	30.24	0.02	0.40	0.00	0.00	0.03	0.00	43.49	99.34
F1	3311.3	0.39	0.00	1.70	53.61	0.02	0.36	0.15	0.11	0.00	0.00	43.91	100.25
		0.29	0.02	0.05	54.50	0.06	0.70	0.00	0.00	0.00	0.00	43.67	99.29
		8.62	0.13	16.31	30.77	0.00	0.27	0.04	0.03	0.00	0.00	43.87	100.04
		8.98	0.00	14.29	31.78	0.04	0.42	0.06	0.27	0.00	0.02	44.00	99.86
F31	2934	9.03	0.03	13.56	32.69	0.00	0.35	0.03	0.25	0.00	0.00	44.20	100.14
		9.54	0.03	13.21	32.02	0.00	0.37	0.00	0.11	0.03	0.00	43.99	99.30
F25	2998.5	0.21	0.03	0.53	54.79	0.00	0.03	0.03	0.00	0.00	0.02	43.66	99.30
		0.16	0.00	0.51	54.70	0.03	0.03	0.02	0.00	0.00	0.02	43.50	98.97
		0.34	0.10	2.21	52.84	0.04	0.22	0.00	0.00	0.00	0.00	43.74	99.49
		0.26	0.09	1.75	53.17	0.03	0.28	0.01	0.00	0.02	0.00	43.58	99.18
F25	2901.5	0.54	0.00	1.92	53.55	0.18	0.17	0.00	0.00	0.00	0.00	44.25	100.61
		0.54	0.04	2.56	52.81	0.02	0.20	0.02	0.00	0.00	0.00	43.83	100.01
F104	3038.9	9.02	0.00	15.50	30.84	0.17	0.20	0.07	0.22	0.00	0.02	44.12	100.16
		0.47	0.18	1.32	52.70	0.07	0.14	0.07	0.79	0.00	0.00	43.36	99.10
		0.37	0.19	1.25	53.55	0.05	0.14	0.03	0.77	0.00	0.00	43.85	100.20
		0.35	0.00	1.24	53.30	0.05	0.12	0.00	0.76	0.00	0.00	43.44	99.26
		0.68	0.10	1.21	52.51	0.08	0.11	0.09	0.86	0.00	0.00	43.35	98.99
		0.69	0.04	1.13	53.30	0.08	0.12	0.06	0.74	0.00	0.00	43.86	100.02
		9.15	0.00	12.71	32.97	0.00	0.34	0.00	0.28	0.00	0.00	44.02	99.47
F104	3039.2	0.39	0.00	1.62	53.49	0.02	0.24	0.00	0.10	0.00	0.00	43.62	99.48
		0.31	0.04	1.42	53.84	0.00	0.17	0.13	0.22	0.00	0.00	43.76	99.89