METHOD FOR SAMPLING MULTIPHASE LIQUID FROM A PIPELINE AND A DEVICE FOR SAMPLING MULTIPHASE LIQUID FROM A PIPELINE

摘要

FIELD: pipeline liquid sampling. ;SUBSTANCE: invention relates to the technology and technique of sampling a multiphase liquid from a pipeline and can find application in the oil production and other industries. The method for sampling a multiphase liquid from the pipeline (2) by a sampling element (1) includes preliminary mixing of the flow by means of a complex hydrodynamic effect on the flow of tear-off, jet and pulsating vortex flows using a sampling device. The device for sampling multiphase liquid from the pipeline (2) contains a mixer for mixing the flow and a sampling element (1) installed in series in the pipeline (2) with the orientation of the inlet opening towards the flow. The mixer is made of a sequentially arranged perforated pipe (3) and a cylindrical body (4) coaxially with the pipeline, the inner cavity of which is formed by three sequentially arranged sections: an inlet annular diffuser section (I), a middle cylindrical section (II), on the inner surface of which tear-off spherical recesses (8) are made along the entire length in a corridor or staggered order, and an outlet section (III) made smooth with a transition to the inner diameter of the pipeline (2). At the same time, throttling holes are additionally made in the inlet section of the cylindrical body. ;EFFECT: invention increases the representativeness of the sampled multiphase liquid from the pipeline and the accuracy of determining its composition, as well as increases the resource of reliable operation of the mixer and the sampling element.;4 cl, 4 dwg