METHOD AND DEVICE FOR DETERMINING COST OF COMPONENTS OF MULTIPHASE FLUID Russian patent published in 2019 - IPC E21B47/10 

FIELD: physics.

SUBSTANCE: group of inventions relates to a method and apparatus for determining flowrates of multiphase fluid components. Method includes the first magnetisation process and the second multi-phase magnetization process in the pipeline in the target oil and gas well, respectively, to obtain the first magnetized multiphase fluid and the second magnetized multiphase fluid. Determining a first set of echo signal sequences and a second set of echo signal sequences corresponding to the first magnetized multiphase fluid and the second magnetized multiphase fluid, respectively. First set of echo signal sequences comprises a first amplitude value of a first sequence of echo signals corresponding to a predetermined horizon position, and the second set of echo signal sequences comprises a first amplitude value of a second echo sequence corresponding to a predetermined horizon position. Determination of content of component of oil phase, component of water phase and component of gaseous phase of multiphase fluid in specified position of horizon and determination of flow rate of multiphase fluid in specified position of horizon; and determining the flowrates of the oil phase component, the aqueous phase component and the multiphase fluid gaseous phase component. Device comprises a magnetization processing module, a module for determining the value of the amplitude of the sequence of echo signals, modules for determination of content, flow rate and flow rate of component of oil phase, component of water phase and gas phase component of multiphase fluid in specified horizon position. Magnetization processing module is configured to perform a first magnetisation process and a second magnetization process of the multiphase fluid in the pipeline in the target oil and gas well, respectively, to obtain a first magnetized multiphase fluid and a second magnetized multiphase fluid, wherein the first magnetisation process comprises a preliminary magnetisation process and a detection magnetisation process, and the second magnetisation process comprises a detecting magnetisation process.

EFFECT: technical result consists in improvement of accuracy of determination of flow rate of each component of multiphase fluid.

10 cl, 2 dwg