GEAR TO INVESTIGATE FORMATION FLUIDS Russian patent published in 2003 - IPC

FIELD: oil and gas industry. SUBSTANCE: gear can be employed to take samples across well-head and from oil and gas pipe-lines, to study physical properties of well-head and formation fluids, to determine pressure-to-temperature ratio and to establish content of free water in taken sample of hydrocarbon fluid. Technical result of invention lies in provision for selection of representative sample of formation fluid from well-head equipment not allowing violation of relations of phases and of their phase state, in analysis of these relations without transfer into special hardware, in examination of deep samples of formation fluids after their transfer from samplers into given gear. Proposed gear includes measurement high-pressure chamber with lower and upper covers fitted with gland assembly and shut-off valves installed in thermostatting enclosure with distribution unit and manometer. Measurement high-pressure chamber houses separating piston with hydraulic drive carrying meter in the form of scale with limb anchored on rod and mechanical drive coming in the form of screw with nut for rod displacement. Body of separating piston houses mixer made in the form of rod passing through gland assembly, collapsing spring linked to separating piston, drive implemented with cooler of gland assembly in the form of water jacket and electric motor with variable rotational speed tied up to rod. Upper cover of measurement highpressure chamber carries electronic temperature and pressure transducers which are connected through shut-off valves to computer. Slide-wire which current collecting part is connected to limb of meter is placed in parallel to meter on lower cover of measurement high- pressure chamber. Lower end of separating piston has through hole and rod of hydraulic drive is attached to piston through rubber seal. EFFECT: provision for taking representative samples of formation fluids without violation of relations of phases and their phase state. 1 dwg