1
Iulius M Cucuiat, Vasile V Popp: Desulfurization process and installation for hydrocarbon reservoir fluids produced by wells. Institutul de Cercetari Si Proiectari Pentru Petrol Si Gaze, Karl F Ross, October 16, 1979: US04171349 (54 worldwide citation)

Hydrogen sulfide is removed from a three-phase mixture of crude oil, natural gas, and water as it issues as a stream from an oil well by first adding liquid sulfur dioxide to the stream without substantially changing its temperature or pressure and then turbulencing the stream to react most of the h ...


2
Alexandru Turta, Marius Cucuiat: Recovery of oil from an oil reservoir by miscible displacement. Institutul de Cercetari si Proiectari Pentru Petrol si Gaze, Karl F Ross, August 10, 1982: US04343362 (2 worldwide citation)

Oil from an oil reservoir and subsequently from several oil reservoirs is recovered by injecting, in a first stage, a displacement agent in a gaseous state into the oil reservoir. Afterwards, in a second stage, there is withdrawn 90% of the displacement agent from the oil reservoir together with wat ...


3
Iuliu M Cucuiat, Gabriel Holdis, Valentin E Hanciulescu: Method and apparatus for the determination of the density of light hydrocarbons mixtures. Institutul de Cercetari si Proiectari Pentru Petrol si Gaze, Karl F Ross, Herbert Dubno, February 7, 1984: US04429572 (2 worldwide citation)

A method and an apparatus are disclosed for the determination of the density of a light hydrocarbon mixture by thermostatting the light hydrocarbon mixture in a large thermostatted vessel at a temperature at which said mixture is liquid in said thermostatted vessel below a level thereof. The large t ...


4
Valentin Eugen Hanciulescu, Dumitru Milos, Costel Serban, Ion Lazar, Stefan Fanica: Subsurface differential pressure recorder. Institutul de Cercetari si Proiectari Pentru Petrol si Gaze, December 21, 1976: US03998096 (2 worldwide citation)

The invention involves a device for recording pressure variations which are small with respect to the absolute pressure value in a bore hole which produces fluids under pressure from a hydrocarbon formation, based on measured differential pressure. The device uses a helical spring for the pressure s ...