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Composite type biological emulsion splitter

A biological demulsifier, a composite technology, applied in the directions of microorganisms, microorganism-based methods, biochemical equipment and methods, etc., can solve the failure of large-scale application of biological demulsifiers, the large amount of chemical demulsifiers used, and the cost of use and research and development. increase and other issues, to achieve the effect of easy large-scale application, saving energy consumption, reducing use and research and development costs

Inactive Publication Date: 2009-09-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing chemical demulsifier has a large amount of use and poor adaptability, which leads to increased use and research and development costs, and the large dosage of biological demulsifiers and the lack of special dosing and processing equipment, resulting in biological demulsifiers. To solve the problem of large-scale application, a compound biological demulsifier is provided

Method used

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  • Composite type biological emulsion splitter
  • Composite type biological emulsion splitter
  • Composite type biological emulsion splitter

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specific Embodiment approach 1

[0008] Specific embodiment 1: The composite biological demulsifier in this embodiment is prepared by mixing 0.5-1.5 mg of chemical demulsifier, 550-650 mg of biological demulsifier, 2.5-3.5 mg of chemical demulsifier and the rest of distilled water per liter. The main component of the chemical demulsifier is polyoxypropylene polyoxyethylene propylene glycol ether; the biological demulsifier is the extracellular protein secretion of Bacillus mojavensis; the main component of the chemical demulsifier is polyethylene based polyquaternium salts.

[0009] The preparation of the biological demulsifier in the present embodiment: 1. Get Bacillus mojavensis and inoculate it in a liquid medium, and cultivate it for 24 hours at a temperature of 30 ± 2° C. and 140 r / min to obtain a seed solution; 2. 1. Inoculate the seed liquid in the nutrient solution of the fermenter at a volume ratio of 10%, and cultivate it for 24h under the condition of 30±2° C. to obtain the whole fermented liquid o...

specific Embodiment approach 2

[0020] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the composite biological demulsifier is prepared by mixing 1 mg of chemical demulsifier, 600 mg of biological demulsifier, 3 mg of chemical demulsifier and the rest of distilled water per 1 L. made. Others are the same as in the first embodiment.

[0021] In this embodiment, the composite biological demulsifier is used to treat oilfield production fluid, and the test results are as follows figure 1 It is shown that with the prolongation of the demulsification time, the treatment effect of the composite biodemulsifier on the oilfield production fluid is better, and the oil content in the oilfield production fluid can be reduced by about 90% in 30 minutes; as figure 2 As shown, the composite biological demulsifier has a good demulsification effect on the oilfield production fluid with a pH of 7-10, and reduces the oil content in the oilfield production fluid by more than 90%, which shows that ...

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Abstract

A composite type biological emulsion splitter relates to an emulsion splitter. The invention solves the problems that the use and development cost is increased, the adding amount of biological emulsion splitter is great, special adding and processing devices are insufficient and the biological emulsion splitter is not widely applied owing to large using amount and bad application of the existing chemical emulsion splitter. The composite type biological emulsion splitter is prepared by mixing chemical emulsion splitter, biological emulsion splitter, chemical emulsion breaking auxiliary and distilled water. The use of the biological emulsion splitter in the composite type biological emulsion splitter in the invention reduces the using amount of chemical emulsion splitter, relieves the bad influences of chemicals on oilfield water quality and peripheral environment, and has strong water separation capability, small using amount and good applicability, thereby reducing the use and development cost; meanwhile, the composite type biological emulsion splitter can be added by using the existing device of oilfield, and is easy to use in large scale.

Description

technical field [0001] The present invention relates to a demulsifier. Background technique [0002] With the wide application of secondary and tertiary oil recovery technologies, the water content of crude oil production fluid in major oilfields is generally as high as 80%, the degree of emulsification of crude oil production fluid is serious, the water quality is complex, and the oil production and refining equipment is corroded. The main demulsifiers currently used are chemical demulsifiers. The short-term demulsification effect of chemical demulsifiers is obvious, but the production process of chemical demulsifiers is complicated, the cycle is long, and the amount of use is large. All need to carry out larger transformation to existing equipment, cause the use cost to increase. The biological demulsifier itself is produced by microbial fermentation. Its process is simple, and it has the characteristics of high demulsification efficiency, high adaptability, easy degrada...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00B01D17/05C12P1/04C12R1/07C09K23/00
Inventor 马放侯宁李旭李大鹏魏利王金娜代阳徐旸刘畅
Owner HARBIN INST OF TECH
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