Tube sampler capable of realizing under-pressure sampling, isothermal sampling and anti-shear sampling, and sampling method
A sampler and anti-shear technology, applied in the sampling device and other directions, can solve the problems of difficult piston movement, increased workload, complex structure and sealing, and achieve the effect of reducing sampling workload, avoiding shearing effect, and reliable sealing
Pending Publication Date: 2017-08-18
CHINA UNIV OF PETROLEUM (BEIJING)
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The invention relates to the technical field of low-viscosity crude oil pipeline transportation equipment, in particular to a tubular sampler and a sampling method for realizing isothermal anti-shear sampling under pressure. In the tubular sampler and sampling method for realizing isothermal anti-shear sampling with pressure of the present invention, the tubular sampler includes a bypass pipeline arranged obliquely relative to the horizontal line, and the two ends of the bypass pipeline are respectively openable to the bottom of the crude oil pipeline. Closed connection, used to continuously extract and seal the oil from the crude oil pipeline; after the pressure of the sealed oil is released, when the gas is introduced into the bypass pipeline, the sealed low-viscosity oil flows out of the bypass pipeline due to its own gravity; based on The sampler proposes a sampling method. The sampler and sampling method can directly implement pressure sampling, isothermal sampling, and anti-shear sampling without affecting the normal transportation process of crude oil pipelines, and the sampling does not require external force driving, and has the advantages of small sampling workload and less waste oil. , Simple structure, reliable sealing advantages.
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