Anti-emulsifying and demulsifying cleanup additive and preparation method thereof

A demulsification aid and demulsifier technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of rising cost of fracturing fluid materials, single performance, inconvenient use of additives, etc., to reduce the surface interface Tension, good drainage performance, the effect of less dosage

Inactive Publication Date: 2019-04-19
克拉玛依中科恒信科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is inconvenient to use additives with a wide variety and single performance, which also increases the cost of fracturing fluid materials

Method used

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  • Anti-emulsifying and demulsifying cleanup additive and preparation method thereof
  • Anti-emulsifying and demulsifying cleanup additive and preparation method thereof
  • Anti-emulsifying and demulsifying cleanup additive and preparation method thereof

Examples

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preparation example Construction

[0026] The preparation method of the biosurfactant of the present invention is: take the fermentation broth of Acinetobacter acetic acid strain in a centrifuge with a rotating speed of 10000rpm for 20 minutes, take the supernatant, and adjust the supernatant with 2mol / L concentrated hydrochloric acid PH to 2.0, let stand overnight at 4°C, centrifuge the solution at 10000rpm for 20min, discard the supernatant, resuspend the precipitate with a small amount of distilled water, adjust the pH to 7.0 with concentrated NaOH, then place the sample at -20°C for 5h , Freeze-dried for 24 hours under vacuum conditions, the resulting sample was dissolved in an excess of anhydrous methanol ultrasonically, centrifuged for 10 minutes in a centrifuge at a speed of 14000 rpm, the supernatant was taken, and the supernatant was subjected to rotary evaporation at 46°C. Then the biosurfactant is obtained.

[0027] The preparation method of the fluorocarbon surfactant of the present invention is as fol...

Embodiment 1

[0029] An anti-emulsification and demulsification aid, which is composed of the following components in parts by mass: 0.5 parts of fluorocarbon surfactant, 3 parts of 1210 active agent, 1 part of CAB-35 active agent, 98 parts of softened water, and demulsifier SP -169 0.5 parts, GE-189 0.3 parts and biosurfactant 0.2 parts.

[0030] It includes the following steps: in a clean 2-square stainless steel reactor, add 450 kg of softened water, start the mixer to slowly add 50 kg of fluorocarbon surface activity, turn on the electric heating switch, raise the temperature in the kettle to 50 degrees, and slowly add 300 1210 kg of active agent and 100 kg of CAB-35 active agent, keep the temperature in the kettle at 50 degrees and stir for two hours, then add 50 kg of demulsifier SP-169, 30 kg of GE-189 and 20 kg of biosurfactant, stir for 1 hour, Then add 530 kg of demineralized water and stir for 1 hour, turn off the electric heating, and wait until the temperature in the kettle drops ...

Embodiment 2

[0033] An anti-emulsification and demulsification aid, which is composed of the following components in parts by mass: 4 parts of fluorocarbon surfactant, 1 part of 1210 active agent, 3 parts of CAB-35 active agent, 94 parts of softened water, and demulsifier SP -169 0.4 parts, GE-189 0.2 parts and biosurfactant 0.1 parts.

[0034] It includes the following steps: in a clean 2-square stainless steel reactor, add 400 kg of softened water, start the mixer to slowly add 400 kg of fluorocarbon surface activity, turn on the electric heating switch, raise the temperature in the kettle to 55 degrees, and slowly add 100 1210 kg of active agent and 300 kg of CAB-35 active agent, keep the temperature in the kettle at 55 degrees and stir for three hours, then add 40 kg of demulsifier SP-169, 20 kg of GE-189 and 10 kg of biosurfactant, and stir for 2 hours. Then add 540 kg of demineralized water and stir for 1 hour, turn off the electric heating, and wait until the temperature in the kettle ...

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Abstract

The invention discloses an anti-emulsifying and demulsifying cleanup additive. The anti-emulsifying and demulsifying cleanup additive comprises the following components, by mass: 0.5-5 parts of a fluorocarbon surfactant, 1-3 parts of a 1210 activator, 1-4 parts of a CAB-35 activator, 87-98 parts of softened water, and 0.5-1 part of a demulsification composition. The anti-emulsifying and demulsifying cleanup additive of the invention is composed of a plurality of activators, and so the anti-emulsifying and demulsifying cleanup additive can significantly reduce the interfacial tension of residual liquid surface, improve the wettability of rock surfaces, prevent blockage caused by the formation of an emulsified liquid, reduce the variety and quantity of liquid used in a well, and reduce the cost of construction liquid.

Description

Technical field [0001] The invention relates to the technical field of chemicals for the petroleum industry, in particular to an anti-emulsion and demulsification aid and a preparation method thereof. Background technique [0002] In fracturing construction, the compatibility of fracturing fluid, reservoir rock and reservoir fluid is the most critical factor for fracturing fluid selection. The entry of water-based fracturing fluid into the reservoir can cause the hydration, swelling, dispersion and migration of clay minerals, and the solid damage of the fracturing residue to the reservoir. In addition, the incompatibility between fracturing fluid and reservoir rock can cause wetting reversal, increase capillary force, and cause water lock. Oil-water emulsification can produce "Jia Min effect", which will seriously hinder the flow of fracturing fluid and affect The effect of increasing production after compression. Researchers have successively developed drainage aids, mutual so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C09K8/74
CPCC09K8/68C09K8/74C09K2208/26
Inventor 祁红星石豫新葛顺林李功彬
Owner 克拉玛依中科恒信科技有限责任公司
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