INSTRUMENT FOR DETERMINATION OF VOLUME FRACTION AND PHYSICAL PARAMETERS OF OIL IN FORMATION FLUID Russian patent published in 1997 - IPC

FIELD: oil producing and processing and chemical industries, in particular, methods of in-process monitoring of oil content in formation fluid. SUBSTANCE: instrument has outlet pipe from the main pipeline of well, measuring vessel in form of differential hydraulic cylinder with piston and reciprocating rod. Piston together with body forms two hollows - measuring and behind-piston ones. Installed in succession in outlet pipe, before measuring vessel, are electric valve and calibrated orifice. Behind-piston hollow is communicated with main pipeline through two additional parallel pipelines in which electric valves are installed. Installed between inlets of additional pipelines in main pipeline is hydraulic resistance. Installed in calibrated orifice is electric differential pressure gage generating signal proportional to pressure differential in calibrated orifice. Located on hydraulic cylinder rod is magnetic tape which forms pulses in head of pulse pickup during motion of rod. Electric outputs of differential pressure gage and pulse pickup are connected to computing device. EFFECT: higher efficiency. 1 dwg