Method for removing oil extraction polymer from crude oil
A polymer and crude oil technology, which is applied in the petroleum industry, refining hydrocarbon oil, refining by filtration, etc., can solve problems such as the reduction of heat exchanger efficiency, and achieve the effects of cost reduction, simple steps and easy implementation.
Inactive Publication Date: 2016-02-03
YANGTZE UNIVERSITY
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Problems solved by technology
[0004] The present invention makes improvements to the problems existing in the above-mentioned prior art. The purpose of the present invention is to solve the problem that the efficiency of the heat exchanger is significantly reduced when the crude oil obtained by polymer flooding is demulsified and transported on the ground, and to provide a Method for Removing Oil Recovery Polymers
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[0014] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but it does not constitute a limitation of the present invention, and is only used as an example. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.
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Abstract
The invention provides a method for removing an oil extraction polymer from crude oil. According to the method, under the stirring condition, barium sulfate microspheres are added into the crude oil, then the crude oil mixture is placed into a microwave oven to be radiated and filtered to obtain polymer-removed crude oil with the oil extraction polymer removed. The method for removing the oil extraction polymer from the crude oil is provided for the problem that when the crude oil obtained through polymer flooding is demulsified on the ground and conveyed, efficiency of a heat exchanger is remarkably reduced. The oil extraction polymer in the crude oil can be removed, and the steps are simple and easy to realize; moreover, the used barium sulfate microspheres can be reused, and cost of the method is reduced.
Description
technical field [0001] The invention relates to a crude oil treatment method, in particular to a method for removing oil recovery polymers from crude oil. Background technique [0002] Because water-soluble polymers form slugs in oil reservoirs, they can drive out crude oil in oil reservoirs under the push of pressure difference, so that oil recovery can be improved. With the increase of high water-cut oil reservoirs, hydrophobically associating water-soluble polymers have been widely used as oil recovery polymers. However, due to the hydrophobic properties of the oil recovery polymer, some residues in the crude oil will lead to the precipitation of crusts on the surface of the heater when the crude oil is demulsified and transported on the ground, resulting in a significant decrease in the efficiency of the heat exchanger. [0003] In the prior art, the traditional demulsification method requires high temperature, complicated steps, and high cost of demulsification. Cont...
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IPC IPC(8): C10G31/00C10G31/09C10G32/04
Inventor 石立红
Owner YANGTZE UNIVERSITY