Geofluids / 2019 / Article / Tab 3

Research Article

Damage Mechanism of Oil-Based Drilling Fluid Flow in Seepage Channels for Fractured Tight Sandstone Gas Reservoirs

Table 3

XRD analysis of clay mineral content in the Keshen Block.

Core numberAbsolute content of clay minerals (%)Relative content of clay minerals (%)Interlayer ratio (%S)
IlliteIllite/montmorilloniteKaoliniteChlorite

ks2-2-8-614.952.68.30.039.115.0
ks2-2-8-672.353.46.60.040.015.0
ks2-2-8-726.266.08.70.025.315.0
ks2-2-8-843.058.23.10.038.710.0
ks2-2-14-1313.357.014.30.028.715.0
ks8-1146.066.411.70.021.815.0
ks207-906.053.314.40.032.315.0
ks208-1048.553.918.30.027.915.0

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