DEVICE (VERSIONS) AND PROCEDURE (VERSIONS) FOR ANALYSIS OF PROPERTIES OF WELL BORE FLUIDS Russian patent published in 2011 - IPC E21B49/10 E21B47/12 

FIELD: oil and gas production.

SUBSTANCE: according to one version first fluid is produced in first point of well. Fluid is entrapped into the device. The second fluid is produced in the second point of well. To obtain data on properties of fluids analysis of fluids is made with the said device in well under in essence similar well conditions. Uncertainty in obtained properties of fluid is quantified. Also, according to one version the device is equipped with a downhole tool consisting of a pipeline with an optic cell, of a selectively operating appliance, of a fluid analyser and of at least one processor. The selectively operating appliance is connected with the pipeline to facilitate flow and entrapment of at least the first and second fluids through the optic cell. The fluid analyser is optically connected with the cell; it outputs data about properties of the first and the second fluid flowing through the cell. The processor is coupled with the downhole tool and consists of appliance for receiving data on fluid properties from the downhole tool. Data on fluid properties are obtained under in essence the same well conditions. The said processor quantifies uncertainty in fluid properties.

EFFECT: upgraded accuracy in analysis of well bore fluid properties.

25 cl, 27 dwg