Fast demulsification flocculant for well cleanout truck of oil field

A flocculant and well-washing vehicle technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, mining wastewater treatment, etc., can solve the problems of wasting transport capacity and manpower, etc., achieve fast sedimentation speed, less dosage of chemicals, and good dehydration effect Effect

Inactive Publication Date: 2015-06-24
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the well flushing fluid produced was transported to the joint station or designated place by tanker for unified treatment, wasting a lot of transport capacity and manpower

Method used

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  • Fast demulsification flocculant for well cleanout truck of oil field
  • Fast demulsification flocculant for well cleanout truck of oil field
  • Fast demulsification flocculant for well cleanout truck of oil field

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Effect test

Embodiment 1

[0018] The rapid demulsification flocculant for oil field well washing vehicle of the present invention is composed of a dendritic nonionic demulsifier, a polymeric flocculant and a polymer composite ion sedimentation agent. The weight ratio of the dendritic non-ionic demulsifier, the polymeric flocculant and the polymer composite ion sedimentation agent is 1:1:0.1.

[0019] The dendritic nonionic demulsifier is polyethylene polyamine ethylene oxide propylene oxide polyether. The preparation method is as follows: select polyethylene polyamine and glycerin as the initiator, and KOH as the catalyst, add the initiator and the catalyst into a 0.5L high-pressure reactor, fully purge the pipeline and the reactor with nitrogen, stir and Heat up to 90°C, vacuumize and continue to heat up, stop vacuuming when it reaches 120°C (about 0.5 hours), add propylene oxide dropwise, and react at a temperature of 135±5°C and a pressure of 0.4MPa until the initiator and epoxy The ratio of ethane...

Embodiment 2

[0023] The rapid demulsification flocculant for oil field well washing vehicle of the present invention is composed of a dendritic nonionic demulsifier, a polymeric flocculant and a polymer composite ion sedimentation agent. The weight ratio of the dendritic non-ionic demulsifier, the polymeric flocculant and the polymer composite ion sedimentation agent is 1:5:1.

[0024] The dendritic nonionic demulsifier is polyethylene polyamine ethylene oxide propylene oxide polyether. The preparation method is as follows: select polyethylene polyamine and glycerin as the initiator, and KOH as the catalyst, add the initiator and the catalyst into a 0.5L high-pressure reactor, fully purge the pipeline and the reactor with nitrogen, stir and Heat up to 90°C, vacuumize and continue to heat up, stop vacuuming when it reaches 120°C (about 0.5 hours), add propylene oxide dropwise, and react at a temperature of 135±5°C and a pressure of 0.4MPa until the initiator and epoxy The ratio of ethane t...

Embodiment 3

[0028] The rapid demulsification flocculant for oil field well washing vehicle of the present invention is composed of a dendritic nonionic demulsifier, a polymeric flocculant and a polymer composite ion sedimentation agent. The weight ratio of the dendritic non-ionic demulsifier, the polymeric flocculant and the polymer composite ion sedimentation agent is 1:3:0.5.

[0029] The dendritic nonionic demulsifier is polyethylene polyamine ethylene oxide propylene oxide polyether. The preparation method is as follows: select polyethylene polyamine and glycerin as the initiator, and KOH as the catalyst, add the initiator and the catalyst into a 0.5L high-pressure reactor, fully purge the pipeline and the reactor with nitrogen, stir and Heat up to 90°C, vacuumize and continue to heat up, stop vacuuming when it reaches 120°C (about 0.5 hours), add propylene oxide dropwise, and react at a temperature of 135±5°C and a pressure of 0.4MPa until the initiator and epoxy The ratio of ethane...

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Abstract

The invention discloses a fast demulsification flocculant for a well cleanout truck of an oil field. The flocculant consists of a dendritic nonionic demulsification agent, a polymeric flocculant and a macromolecular ion settling agent in a weight ratio of 1: (1-5): (0.1-1). During use, the dosage is 50ppm, the dehydrating temperature is 30 DEG C, the dehydrating rate after 1 hour is greater than 99%, the discharge sewage is clear in color, the suspended solids are less than or equal to 3mg/L, and the median particle diameter is less than or equal to 1.5 microns. The oil content is less than or equal to 5mg/L, and the flocculant has the advantages of being few in medicament dosage, fast in settling speed and low in using temperature. Compared with a field compound flocculant, the performances of a flushing fluid settled for 1 hour cannot satisfy the requirement of field reinjection water.

Description

technical field [0001] The invention relates to the technical field of flocculants for oil fields, in particular to a rapid demulsification flocculant for oil field well washing vehicles. Background technique [0002] The well flushing fluid produced in the oilfield well flushing process contains a large number of mechanical impurities, suspended colloidal particles and oil-in-water emulsions. In the past, the well-washing fluid produced was transported to the joint station or a designated place by tank truck for unified treatment, which wasted a lot of transport capacity and manpower. According to the production status of the oil field, the well flushing fluid can be directly processed on site, and after reaching the standard, it can be re-injected into the well by the well flushing truck. Therefore, the chemical agent matched with the well washing vehicle must have fast demulsification speed, good dehydration effect, fast settlement speed, and reduce on-site construction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C02F1/56C02F103/10
Inventor 范振忠王继刚刘庆旺娄艳敏范炜晴李赫
Owner NORTHEAST GASOLINEEUM UNIV
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