Geofluids

Research Article

Chemically Active Elements of Reservoir Quartz Cement Trace Hydrocarbon Migration in the Mahu Sag, Junggar Basin, NW China

Table 3

In situ major and trace element data for quartz in the D13 well. Sample S016, 4209 m depth.


Element	Unit	S016-2-01	S016-2-02	S016-2-03	S016-2-04	S016-2-05	S016-2-06	S016-2-07	S016-2-08

Na₂O	wt.%	0.0001	0.0009	0.0044	0.0028	0.0114	0.0403	0.0248	0.0456
MgO	wt.%	0.0018	0.0005	0.0014	0.0924	0.2689	0.4281	0.1951	0.238
Al₂O₃	wt.%	0.0157	0.0117	0.027	0.4778	1.5872	5.0255	27.8972	3.6433
SiO₂	wt.%	98.8128	99.3119	99.1262	98.5171	99.5735	99.4796	97.9821	98.3665
P₂O₅	wt.%	0.0004	0.0021	0.0017	bdl	0.0029	0.0016	bdl	0.0025
K₂O	wt.%	0.0005	0.0008	0.0003	0.0315	0.1263	0.6335	0.1276	0.5843
CaO	wt.%	0.0052	0.0023	0.0089	0.0106	0.0128	0.0484	0.0331	0.0502
CaO	wt.%	0.0286	0.0299	0.0275	0.0337	0.0359	0.0803	0.0321	0.0873
TiO₂	wt.%	0.0065	0.0054	0.0081	0.0085	0.0206	0.3722	0.0481	0.0186
MnO	wt.%	0.0001	bdl	0.0021	0.0219	0.0542	0.0746	0.0376	0.0429
FeO	wt.%	0.0035	0.0146	0.0227	0.5517	1.6852	2.0688	0.9899	1.1847
Li	ppm	2.0965	bdl	3.1423	7.8239	16.3127	23.3518	47.5405	47.7116
Be	ppm	bdl	0.0059	0.0268	0.1594	0.1286	0.5496	0.2767	0.5168
B	ppm	0.3452	0.9822	1.7401	0.3358	3.3413	15.6646	2.9438	5.3068
Sc	ppm	1.5332	1.5815	1.7752	2.4409	2.8277	5.2015	4.5676	3.5416
V	ppm	0.0768	0.141	0.1456	6.2744	18.6091	38.5048	44.2837	20.8029
Cr	ppm	0.9691	0.8712	1.1591	2.8601	5.3181	8.6423	8.2257	4.4051
Co	ppm	0.0849	3.4376	2.4933	1.1143	2.4508	3.1264	2.5711	1.737
Ni	ppm	0.1548	0.446	bdl	15.0496	18.0809	16.3241	60.7456	8.5679
Cu	ppm	4.6485	1.583	0.4035	10.0872	3.4157	8.3014	15.9753	10.3209
Zn	ppm	4.53	7.0383	3.4491	10.9982	15.4474	20.3231	8.3061	250.1787
Ga	ppm	0.0236	0.0091	0.0352	0.7123	2.3717	4.8447	5.7437	3.5102
Ge	ppm	1.1098	1.0578	0.917	1.2367	1.2775	1.584	1.1088	1.2653
Rb	ppm	0.0121	0.1982	bdl	0.7515	2.4961	21.3532	2.597	15.8376
Sr	ppm	1.1306	bdl	0.1347	1.3932	5.1935	13.4053	5.3072	12.018
Y	ppm	0.0789	bdl	0.3099	3.7087	4.4541	8.788	0.6344	3.0661
Zr	ppm	7.4731	27.9566	13.5468	27.0276	36.3953	83.4228	6.0641	19.4439
Nb	ppm	0.0072	0.0048	0.0083	0.1382	0.5832	4.2074	0.483	0.4359
Mo	ppm	0.0139	3.3567	0.8704	bdl	0.3764	0.1611	0.025	0.0231
Cs	ppm	0.0247	0.0419	0.146	0.0547	0.2173	1.947	0.1248	0.4007
Ba	ppm	0.0359	0.0357	1.0805	5.7055	20.774	92.4082	16.6073	125.0756
La	ppm	0.0032	bdl	0.0037	0.0462	0.2222	1.2463	0.3332	7.1036
Ce	ppm	0.1066	0.003	0.0191	0.1468	0.6328	1.9927	1.2214	12.4724
Pr	ppm	0.0059	0.0093	bdl	0.0183	0.079	0.1865	0.0786	1.1895
Nd	ppm	0.0064	0.0191	0.0074	0.107	0.4143	0.7609	0.2295	3.6637
Sm	ppm	bdl	bdl	0.0168	0.0664	0.2537	0.3327	0.045	0.4885
Eu	ppm	0.0185	0.0593	0.0309	0.0137	0.0202	0.1079	0.0064	0.1828
Gd	ppm	bdl	bdl	0.0078	0.1565	0.3665	0.4613	0.0312	0.3494
Tb	ppm	bdl	bdl	0.0038	0.0543	0.1052	0.2078	0.0237	0.0699
Dy	ppm	bdl	0.0307	bdl	0.6531	0.746	1.4292	0.1024	0.4987
Ho	ppm	bdl	0.0085	0.0136	0.1708	0.157	0.3226	0.0166	0.1081
Er	ppm	0.0164	0.418	0.0189	0.3973	0.4846	0.8769	0.0594	0.2808
Tm	ppm	0.0049	bdl	0.0056	0.1347	0.0878	0.1604	0.0075	0.046
Yb	ppm	0.0041	0.0041	0.0048	0.4731	0.493	1.0755	0.0836	0.3126
Lu	ppm	0.001	0.001	0.007	0.0804	0.0829	0.15	0.0078	0.0509
Hf	ppm	bdl	bdl	0.0036	0.6129	0.8206	2.2239	0.195	0.5997
Ta	ppm	0.0032	bdl	bdl	0.0082	0.0538	0.4038	0.1343	0.0415
W	ppm	0.0274	0.0471	0.0823	bdl	0.029	0.4034	0.0648	0.1617
Hg	ppm	bdl	bdl	bdl	bdl	bdl	bdl	bdl	bdl
Tl	ppm	0.6772	bdl	0.0362	bdl	0.0633	0.0847	0.0332	0.0451
Pb	ppm	6.8722	0.4472	1.3452	0.0906	0.3238	3.8856	0.7726	0.4805
Th	ppm	0.0192	bdl	0.0225	2.0437	1.3406	9.2599	0.8271	8.162
U	ppm	0.0017	0.0051	0.0778	0.2246	0.2462	0.9181	0.165	0.8694

Note: bdl denotes below detection limit.