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

Table 4

Electronic probe microanalysis for quartz in the Es3 sandstone (wt%).

Well	Depth (m)	Point	MgO	Na2O	FeO	CaO	Al2O3	MnO	K2O	SrO	TiO2	SiO2	Total
F31	2934.0	Q	0	0	0.03	0.02	0	0.02	0	0.33	0	99.3	99.7
		Qo	0	0.03	0.02	0.03	0.14	0	0	0.33	0.02	98.6	99.17
		Qo	0	0	0	0.05	0.17	0	0	0.27	0	98.4	98.89
		Q	0	0	0.02	0	0.07	0	0.03	0.34	0.02	99.26	99.74
		Qo	0	0	0	0.05	0.14	0	0.02	0.29	0.02	99.23	99.75
		Qo	0	0	0	0.02	0.05	0	0.01	0.29	0.04	99.03	99.44
F25	2998.5	Q	0.03	0.02	0	0	0	0	0	0.27	0.04	99.46	99.82
		Qo	0.02	0	0.04	0.11	0.19	0	0	0.36	0	98.58	99.3
		Qo	0.05	0	0	0.25	0.2	0	0.02	0.37	0	98.38	99.27
F104	3039.2	Q	0.02	0.04	0	0.04	0.04	0	0	0.36	0	99.53	100.03
		Qo	0	0.02	0	0.03	0.18	0	0	0.29	0	98.9	99.42
		Qo	0	0	0	0.08	0.09	0.03	0	0.35	0	98.64	99.19
		Q	0	0.03	0	0	0.02	0	0	0.29	0	99.19	99.53
		Qo	0	0	0	0.02	0.17	0	0	0.35	0	98.8	99.34
		Qo	0	0.04	0.02	0.05	0.12	0	0.02	0.3	0	99.16	99.71