Water injection experimental method for automatic crude oil sampling system

Abstract

The invention belongs to the technical field of pipeline systems and relates to a water injection experimental method for an automatic crude oil sampling system of a pipeline station. The water injection experimental method based on an integral skid-mounted water injection experimental device includes that water in an inflow pipeline enters a connection pipeline through a manual block valve and then enters a water injection pump to be pressurized after impurities in water is filtered through a filter; the pressurized water sequentially flows through a flow meter, a check valve and a second manual block valve to be injected into a water injection port of a main crude oil pipeline. A manual adjusting valve is adopted for adjusting water injection quantity according to instructions of a third pressure meter and the flower meter. The water injection experimental method has advantages that all water injection detection requirements of automatic crude oil sampling systems in a same project can be met, matching with different water injection quantity ranges can be realized, influences of crude oil medium backflow caused by connection valve failure are eliminated, and safety and reliability in pipeline operation are improved.

Description

technical field [0001] The invention relates to a water injection experiment method for a crude oil automatic sampling system in a pipeline station, belonging to the technical field of pipeline systems. Background technique [0002] According to the requirements of SY / T 5317 "Petroleum Liquid Pipeline Automatic Sampling Method", the entire sampling system needs to be tested after the crude oil automatic sampling system is installed. The process of injecting a certain volume of water and then confirming the total volume of the injected water and the original water represented by the collected sample is a volume balance test. [0003] In the past, the water pump was generally used to directly inject water into the upstream pipeline for sampling. Since the matching flow range of each crude oil automatic sampling system is different, SY / T 5317-2006 "Petroleum Liquid Pipeline Automatic Sampling Method" stipulates in Chapter 15.2: In the water injection experiment of crude oil au...

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Problems solved by technology

[0005] In previous projects, a connection valve was reserved at the water injection port of the crude oil pipeline. When the connection valve at the water injection port fails, the crude oil medium in the pipeline will flow into the water injection device in reverse, which will affect the accuracy of water injection and the safe and stable operation of the water injection device.

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