UNIT FOR CALIBRATION OF BOREHOLE LIQUID FLOWMETERS Russian patent published in 2015 - IPC G01F23/296 

FIELD: instrumentation.

SUBSTANCE: unit for calibration of borehole liquid flowmeters contains the computer-based control panel, the parallel flowing checking system connected through the input pipeline with the block of reception chambers consisting of reference flowmeters with different measurement ranges installed in series with hydraulic resistance regulators and control valves in parallel pipelines, and through the output pipeline, connected through the electric pump and the adjusting gate to the drain tank, the drain tank is connected to the electric pump and through the control valve with the gas separating filter which is connected by the input pipeline of the block of reception chambers to them through control valves, which are mounted with a possibility of connection of any of reference flowmeters into a unified hydraulic circuit with the calibrated borehole flowmeter located in any reception chamber both downstream, and upstream, and the control panel is connected to electric pumps and reference flowmeters.

EFFECT: expansion of functionalities, calibration both for injection, and for operational wells in conditions, maximum closed to real ones in pipes with various diameters at any value of drilling fluid flow rate.

1 dwg