Continuous velocity flowmeter logs are used to measure the fluid flow
rates in open and cased wells. Logs can be run in the up or down
direction; with or without the well producing water. Century's Impeller
flowmeter uses a magnetic coupling between the sensing device and the
electronics so that borehole fluids can not enter the tool and injected oil is
no longer necessary. Internally, a 256-pulse-per-revolution optical encoder
records the impeller turns minimizing statistical problems of other tools.
With this low friction design low flow rates of less than 0.8 liters per second
(3 gallons per minute). The tool is configured with a 114 mm (4.5 in.)
shroud. 89 mm (3.5 in.) shroud is also available. Natural Gamma is
optional
FEATURES
Properties Measured
1.   Natural Gamma: (optional)
2.2 x 10.16 cm (0.875 x 4.0 in.)
NaI Scintillation
2.   Flow Propeller:
Offset: 134.6 cm (53 in.)
3.   Propeller Guard Cage:
Length: 152.4 cm (60 in.)
Temperature: 75 C (167 F)
Diameter: 4.1 cm (1.625 in.)
Pressure: 176 kg/cm2 (2500 PSI)
Weight: 7.3 kg (16 lb.)
Logging Speed: 15 to 18 m/min. (60
ft./min.)
Tool Voltage Required: 16 VDC
TOOL#: 9711