Polymer flooding crude oil low temperature fast demulsifier and preparation method thereof

A crude oil demulsifier and demulsifier technology, applied in the direction of chemical dehydration/demulsification, etc., can solve the problems of high oil content in the extracted water, unsatisfactory demulsification effect, and thick emulsification layer, and achieve low oil content in the extracted water. Excellent compatibility and synergy, clear oil-water interface
CN110387256AActive Publication Date: 2019-10-29盘锦富隆化工有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
盘锦富隆化工有限公司
Publication Date
2019-10-29

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Abstract

The invention discloses a polymer flooding crude oil low temperature fast demulsifier and a preparation method thereof. The polymer flooding crude oil low temperature fast demulsifier is prepared fromthe following components in percentage by mass: 35-70% of a DR-type crude oil demulsifier, 15-60% of a conventional TA1031 crude oil demulsifier, 0.5-2% of vitamin C and3-7% of urea by the preparation method. The DR type crude oil demulsifier, the conventional demulsifier TA1031, the vitamin C and the urea are uniformly mixed by mass percentage, and the polymer flooding crude oil low temperaturefast demulsifier PR is obtained. According to the polymer flooding crude oil low temperature fast demulsifier, Daqing polymer flooding crude oil can be effectively demulsified, and the polymer flooding crude oil low temperature fast demulsifier has the characteristics of high low-temperature demulsification speed, high demulsification efficiency, clear oil-water interface, and low oil content in dehydrated water.
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Description

technical field

[0001] The invention relates to the technical field of oilfield chemical preparations, in particular to a low-temperature rapid demulsifier for polymer flooding crude oil and a preparation method thereof. Background technique

[0002] With the continuous deepening of tertiary oil recovery, various oil recovery technologies have been applied, among which the use of polymer flooding is one of the methods to enhance oil recovery. Macroscopically, it mainly depends on increasing the viscosity of the displacement fluid and reducing the viscosity of the displacement fluid. The mobility ratio of the displaced fluid increases the swept volume; at the microscopic level, due to its inherent viscoelasticity, the polymer has a stretching effect on the oil film or oil droplets during the flow process, which increases the carrying force and improves the microscopic Oil washing efficiency, but polymer flooding also brings negative effects to crude oil dehydration such as hi...

Claims

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