Evaluation device and evaluation method for dynamic demulsification and dehydration characteristics of crude oil emulsion

An evaluation device and emulsion technology, applied in the direction of material inspection products, etc., can solve the problems of high consumption of crude oil emulsion, "collapsing electric field, easy blockage of pipelines, etc., and achieve effective testing services, continuous flow of dosage, and easy observation.
CN104807981BActive Publication Date: 2017-04-05BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
Publication Date
2017-04-05

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Abstract

The invention discloses a device and method for evaluating dynamic demulsification and dehydration characteristics of a crude oil emulsion. The device comprises an emulsion feeding tank, electric heating devices, a high-speed shearing dispersion machine, an emulsion metering pump, a thermometer, a demulsification box, an emulsion recovery tank, a demulsifier feeding tank, a medicament feeding pump, a high-voltage power supply and an oscilloscope, wherein the emulsion feeding tank and the emulsion recovery tank are connected with an inlet of the emulsion metering pump through a three-way valve; an outlet of the emulsion metering pump is connected with an inlet of the demulsification box; an outlet of the demulsification box is connected with the emulsion feeding tank and the emulsion recovery tank through a three-way valve; a front sampling port and a rear sampling port are formed in an inlet pipeline and an outlet pipeline of the demulsification box respectively; the high-voltage power supply and the oscilloscope are sequentially connected to apply a high-voltage electric field to the demulsification box, and the demulsifier feeding tank and the medicament feeding pump are arranged on the inlet pipeline, in front of the front sampling port, of the demulsification box. The structure is compact, few crude oil emulsions are consumed, continuous flowing is realized, observation is convenient due to the fact that a box body of the demulsification box is made of a transparent material, and the device and the method can be used for quickly evaluating the dynamic demulsification and dehydration characteristics of the crude oil emulsion in a laboratory or a project site.
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Description

Technical field

[0001] The invention relates to a technique for testing the dynamic demulsification and dehydration characteristics of crude oil emulsion, in particular to an evaluation device and an evaluation method for the dynamic demulsification and dehydration characteristics of crude oil emulsion. Background technique

[0002] Water is almost "following" in the process of crude oil exploitation. As oil fields around the world gradually enter the middle and late stages of exploitation and the extensive use of enhanced oil recovery (EOR) technology, the water content in the produced fluid of oil wells has increased year by year, and the degree of emulsification has been increasing. Seriously, not only often the crude oil emulsion with water content higher than 15% enters the electric dehydrator, but also the increase of the thickness of the emulsified layer in the electric dehydrator and the enhanced stability of the emulsion make the original electric dehydrator difficult. T...

Claims

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