buildup curve

buildup curve

[′bil‚dəp ‚kərv]
(petroleum engineering)
Graph of bottom-hole pressure buildup versus shut-in time for a gas or oil well.
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However, for the low permeability specimen (k = 10.2 mD), the pressure buildup curve is very close to each other for both the present and the previous systems, while the difference of two pressure drop curves is very significant, even the previous system cannot capture the process of pressure drop.
The presence of inactive end groups explains the leveling-off of the IV buildup curves and determines the ultimate or limiting IVs of all SSP resins.
Figure 5 illustrates the IV buildup curves for SSP of microbeads (0.30 IV) at 230[degrees]C in a gas-fluidized bed with one (1), five (5), and twenty (20) mixing stages.
Figure 6a shows the IV buildup curves for SSP of microbeads (0.30 IV) at various reaction temperatures in a gas-fluidized bed with five mixing stages.
Figure 7 illustrates the IV buildup curves for SSP of smaller beads (~0.8-1.5 mm in diameter, 0.57 IV) at various reaction temperatures (210[degrees]C, 218[degrees]C, and 226[degrees]C) in a gas-fluidized bed with five mixing stages.
Steady-state IV buildup curves for continuous SSP of smaller beads (0.57 IV.
Steady-state IV buildup curves for continuous SSP of micro-beads (0.30 IV) at 230[degrees]C in a gas-fluidized bed with different mixing stages (1.5, or 20).