Geofluids / 2017 / Article / Tab 1 / Research Article
Diagenetic Heterogeneity of Deep Sandstones and Its Relationship to Oil Emplacement: A Case Study from the Middle Jurassic Toutunhe Formation in the Fukang Sag, Central Junggar Basin (NW China) Table 1 Point count data summary and sample petrophysical properties. Petrofacies A: ductile lithic-rich sandstone; petrofacies B: calcite tightly cemented sandstone; petrofacies C: permeable reservoir sandstone.
Well Sample depth (m) Reservoir properties (class) Interpretated petrofacies Core measurement Thin section porosity (%) Textural characteristic Detrital grains (%) Total porosity (%) Permeability (mD) Total Primary Secondary Median grain size (mm) Roundness (class) Sorting (class) Quartz K-Feldspar Plagioclase Volcanic rock fragment D-1 4837.5 Fluorescence C 8.6 2.09 3.3 2.0 1.3 0.20 SA-SR M 18.6 5.0 13.5 33.4 D-1 4939.73 No show A 3.5 0.04 0.10 SA-SR M 14.0 6.9 14.7 40.5 D-1 4959.8 No show A 4.5 0.12 0.09 SA-SR M 11.7 4.5 15.0 42.3 D-1 5299.52 No show A 5.1 0.07 0.5 0.5 0.12 SA-SR M 12.8 6.0 15.7 40.0 D-1 5305.47 No show A 6.3 0.09 0.10 SA-SR G 13.0 7.3 13.0 40.5 D-2 4423.2 Fluorescence C 11.8 0.82 4.0 2.3 1.7 0.16 SA-SR M-G 20.5 4.4 14.0 35.9 D-2 4429.45 Fluorescence C 14.4 1.70 5.4 4.4 1.0 0.19 SA-SR M-G 21.9 3.0 13.1 33.0 D-3 5506.5 Fluorescence C 9.2 1.32 1.8 1.3 0.5 0.15 SA-SR G 17.0 7.2 16.3 34.0 D-3 5510.9 Fluorescence C 11.4 2.31 2.0 1.5 0.5 0.15 SA-SR G 19.4 7.0 14.0 35.3 D-3 5542.8 No show A 6.3 0.18 0.5 0.5 0.13 SA-SR M 15.2 8.0 16.3 38.0 D-6 3970.9 Oil stain C 14.9 1.83 8.7 6.3 2.4 0.16 SA-SR G 17.0 5.8 15.0 33.6 D-6 3971.7 No show B 4.5 0.03 0.18 SA-SR G 18.4 6.0 15.7 30.5 D-6 3974.2 No show B 4.3 0.06 0.17 SA-SR G 17.0 7.3 10.2 32.0 D-6 4257.35 Fluorescence C 13.6 5.16 6.0 4.0 2.0 0.19 SA-SR G 18.5 7.0 13.5 35.0 D-6 4258.85 Fluorescence C 11.7 2.79 7.5 4.5 3.0 0.20 SA-SR G 18.5 6.0 14.0 33.8 D-6 4453.9 No show A 5.3 0.15 0.11 SA-SR G 14.7 5.8 15.0 39.4 D-6 4460.8 No show A 4.5 0.09 0.08 SA-SR M 12.6 3.0 13.8 42.4 D-7 4133.6 Fluorescence C 10.3 0.57 3.3 2.3 1.0 0.15 SA-SR M-G 19.2 7.0 15.0 36.5 D-7 4134.03 Fluorescence C 12.2 1.66 5.2 3.7 1.5 0.17 SA-SR M-G 18.0 6.4 16.7 34.7 D-7 4137.25 Fluorescence C 15.9 11.50 6.2 5.0 1.2 0.21 SA-SR M 21.5 7.0 13.7 35.0 D-7 4138.03 Fluorescence C 14.7 3.82 5.3 4.8 0.5 0.20 SA-SR M-G 20.9 3.0 15.9 34.8 D-7 4514.65 Fluorescence C 12.5 0.95 7.1 5.1 2.0 0.18 SA-SR G 18.8 6.0 14.3 36.0 D-7 4515 No show B 3.5 0.04 0.19 SA-SR G 17.9 5.5 10.0 31.7 D-7 4515.8 Fluorescence C 12.9 1.83 8.0 6.0 2.0 0.15 SA-SR G 15.0 7.0 11.0 38.0 D-8 4425.1 Fluorescence C 13.7 5.42 7.5 5.0 2.5 0.25 SA-SR M-G 21.0 8.7 14.7 29.7 D-8 4545 Fluorescence C 12.9 1.33 5.0 3.5 1.5 0.18 SA-SR G 19.0 7.4 15.0 32.5 D-8 4548.5 No show B 3.3 0.05 0.17 SA-SR M-G 16.5 7.0 8.0 32.4 D-8 4548.6 Fluorescence C 13.0 1.86 6.0 4.0 2.0 0.17 SA-SR G 17.4 6.0 13.6 34.0 Well Sample depth (m) Detrital grains (%) Authigenic minerals (%) Metamorphic rock fragment Sedimentary rock fragment Micas Chert Ductile grain Detrital matrix Albite Quartz overgrowth Chlorite Calcite Analcime Anhydrite Barite Pyrite D-1 4837.5 10.1 1.0 13.8 1.5 2.0 1.0 1.0 3.5 4.0 2.0 D-1 4939.73 13.3 2.0 32.0 6.3 2.3 D-1 4959.8 13.0 1.0 1.5 35.0 8.0 3.0 D-1 5299.52 12.3 1.0 2.0 28.3 7.5 tr. 1.7 D-1 5305.47 12.5 2.2 25.7 8.0 3.0 D-2 4423.2 13.0 0.5 19.1 2.2 4.0 1.5 tr. D-2 4429.45 15.3 0.7 18.8 3.5 0.5 3.0 tr. 0.5 D-3 5506.5 10.5 0.5 16.7 2.3 2.0 1.4 7.0 D-3 5510.9 11.7 15.2 1.5 1.8 2.0 5.0 0.3 D-3 5542.8 15.7 0.8 21.9 5.0 1.0 D-6 3970.9 8.3 0.3 13.5 1.0 1.5 2.2 5.0 tr. 1.6 D-6 3971.7 9.4 5.0 0.5 20.0 D-6 3974.2 11.5 3.0 1.0 22.0 D-6 4257.35 9.0 14.9 1.8 6.0 2.7 tr. 0.5 D-6 4258.85 11.9 13.1 1.0 6.8 0.5 D-6 4453.9 13.1 1.5 2.0 25.1 5.7 tr. 2.8 D-6 4460.8 14.2 1.0 2.3 40.0 7.7 3.0 D-7 4133.6 12.0 20.0 3.4 1.0 0.5 2.0 D-7 4134.03 14.0 0.5 19.0 2.0 0.5 0.5 1.5 D-7 4137.25 12.0 0.5 0.5 15.6 1.5 0.5 0.7 1.0 tr. D-7 4138.03 15.6 1.0 16.2 1.0 0.5 2.0 D-7 4514.65 10.3 0.5 18.1 2.0 1.0 2.7 0.3 1.0 D-7 4515 11.9 4.0 23.0 D-7 4515.8 12.5 1.0 18.9 3.0 3.5 0.5 0.5 D-8 4425.1 15.0 12.7 0.5 0.5 0.5 2.0 D-8 4545 14.5 1.0 19.8 2.0 2.4 1.2 D-8 4548.5 10.8 0.5 5.0 24.8 D-8 4548.6 15.5 15.0 3.2 0.5 3.3 0.5 tr.
