Geofluids

Research Article

Method of Calculating Secondary Porosity of Reef Limestone Reservoir by Casting Thin Section Calibrating Nuclear Magnetic Spectrum

Table 1

Identification report of casting thin section (well DF51 1402.15 m).
Well: DF51Depth: 1402.15 mType of specimen: core
Reservoir space typePoreRatio of pore’s area (%)FissureRatio of fissure’s area (%)
Primary poreSecondary poreTypeGenesisQuantityWidthFilling compositionFilling condition
Intergranular poreIntragranular poreOrganic visceral poreIntergranular dissolved poreIntragranular dissolved poreCemented dissolved poreMatrix dissolved poreKarst cave7.5Open fractureStructural dissolutionSeveral0.01-0.1 mmNoNo1.5
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