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- Lecture # 17
- Chapter 10 – Properties of Black Oils - Reservoir Fluid Studies
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- The fluid properties of interest to the Reservoir Engineer are those
that affect the mobility of fluids within the reservoirs these are used
in material balance calculations
- Properties at surface conditions for transportation and sales (API,
viscosity, oil quality)
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3
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- PVT properties are determined from 5 specific lab procedures
- Flash liberation tests
- Differential Liberation Tests
- Viscosity Measurements
- Separator Tests
- Compositional measurements
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- Oil Properties
- Bubble Point Pressure
- Bo
- Rs
- Bt
- Co and mo
- Gas properties
- Compositions oil & gas
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- Bottom hole or subsurface samples
- Separator Samples
- SAMPLE BEFORE RESERVOIR PRESSURE DROPS BELOW Pb
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8
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10
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- Properties Determined
- Oil formation volume factor at the Bubble Point pressure Bodb
and below the bubble point pressure Bod
- Solution gas-oil ratio at the Bubble Point pressure Rsdb
and below the bubble point pressure Rsd
- Isothermal compressibility (derived property)
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12
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- Tests performed at a combination of different Temperature and Pressure
pairs
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- Goals: Maximize API, minimize BoSb & RsSb
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15
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16
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17
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19
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Notes