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High-efficiency decompression and augmented injection agent used for oil extraction and production method thereof

A production method and technology of booster injection, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of weak adsorption of depressurization booster injection, limited effect of depressurization booster injection, short validity period, etc.

Inactive Publication Date: 2013-05-22
NANCHONG CITY JUXING CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These types of depressurization and boosting agents have weak adsorption, short validity period, and limited depressurization and boosting effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1, its component of high-efficiency pressure-reducing and increasing injection agent for oil recovery is: epichlorohydrin: dimethylamine: trimethylamine: ammonium persulfate: sodium bisulfite: ethylenediamine: triethylenetetramine is 1.5:2.0:1.8:0.08:0.02:0.01:0.03. Its production method is as follows:

[0014] a. Take a certain amount of epichlorohydrin and add it to the jacketed enamel reaction kettle. Slowly feed the mixture of dimethylamine and trimethylamine prepared in proportion at room temperature into the kettle through the feeding funnel. After the feeding is completed, add the initiator ammonium persulfate and then add the reducing agent sodium bisulfite. The above feeding must control the feeding rate, use ice water circulation to ensure timely heat exchange, and keep the temperature in the kettle not higher than 5°C; after the initiator feeding is completed, raise the temperature in the kettle to 60°C by electric heating, and react for 9 hours ...

Embodiment 2

[0016] Embodiment 2, its component by mass ratio is:

[0017] Epichlorohydrin: dimethylamine: trimethylamine: ammonium persulfate: sodium bisulfite: ethylenediamine: triethylenetetramine is 1.3:2.0:2.5:0.01:0.018:0.03:0.05. Its production method is as follows:

[0018] a. Take a certain amount of epichlorohydrin and add it to the jacketed enamel reaction kettle. Slowly feed the mixture of dimethylamine and trimethylamine prepared in proportion at room temperature into the kettle through the feeding funnel. After the feeding is completed, add the initiator ammonium persulfate and then add the reducing agent sodium bisulfite. The above feeding must control the feeding rate, use ice water circulation to ensure timely heat exchange, and keep the temperature in the kettle not higher than 5°C; after the initiator feeding is completed, the temperature in the kettle is raised to 90°C by electric heating, and the intermediate product is obtained after reaction for 7 hours;

[0019] ...

Embodiment 3

[0020] Embodiment 3, its component of high-efficiency pressure-reducing and increasing injection agent for oil recovery is: epichlorohydrin: dimethylamine: trimethylamine: ammonium persulfate: sodium bisulfite: ethylenediamine: triethylenetetramine is 1.3:2.5:1.5:0.01:0.015:0.08:0.02. Its production method is as follows:

[0021] a. Take a certain amount of epichlorohydrin and add it to the jacketed enamel reaction kettle. Slowly feed the mixture of dimethylamine and trimethylamine prepared in proportion at room temperature into the kettle through the feeding funnel. After the feeding is completed, add the initiator ammonium persulfate and then add the reducing agent sodium bisulfite. The above feeding must control the feeding rate, use ice water circulation to ensure timely heat exchange, and keep the temperature in the kettle not higher than 5°C; after the initiator feeding is completed, raise the temperature in the kettle to 80°C by electric heating, and react for 8 hours...

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PUM

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Abstract

The invention discloses a high-efficiency decompression and augmented injection agent used for oil extraction. The high-efficiency decompression and augmented injection agent is characterized by comprising the following components in parts by weight: 1.0-2.0 parts of epoxy chloropropane, 1.0-2.5 parts of dimethylamine, 1.0-4.0 parts of trimethylamine, 0.01-0.1 part of ammonium persulphate, 0.015-0.15 part of sodium hydrogen sulphite, 0.01-0.2 part of ethanediamine and 0.02-0.06 part of triethylene tetramine. The invention also discloses a production method of the high-efficiency decompression and augmented injection agent. The production method is characterized by comprising the following steps of: adding epoxy chloropropane into a porcelain enamel reaction kettle; slowly feeding a mixed solution of dimethylamine and trimethylamine, prepared at room temperature in proportion; after feeding is completed, adding the ammonium persulphate, then adding the sodium hydrogen sulphite, and maintaining temperature in the kettle to be not higher than 5 DEG C; after feeding is completed, heating until the temperature in the kettle is increased to 60-90 DEG C, and reacting for 7-9 hours, so that an intermediate product is obtained; cooling the intermediate product to 40 DEG C, and slowly adding a mixed solution of ethanediamine and triethylene tetramine; and reacting again at the temperature of 40 DEG C, so that the high-efficiency decompression and augmented injection agent finished product is obtained.

Description

technical field [0001] The invention relates to an oil recovery additive and a production method thereof, in particular to a high-efficiency depressurization and injection booster for oil recovery and a production method thereof. Background technique [0002] As we all know, in the water injection development of oil and gas fields in low permeability formations, due to the narrow seepage channels or clay minerals in the reservoir rocks, the formation water injection pressure is high, the injection volume is small, the oil production cost is high, and the recovery rate is very low. Such oil reservoirs exist in large numbers in various oil fields both in my country and abroad. In the development of this type of reservoir, the reservoir is generally treated by injecting a slug of depressurization and injection booster, so that the subsequent water injection can reduce the injection pressure and increase the injection rate. The pressure-reducing and injection-increasing agents ...

Claims

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Application Information

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IPC IPC(8): C09K8/588C09K8/74C09K8/60C08G59/10
Inventor 郑性能张建妮
Owner NANCHONG CITY JUXING CHEM CO LTD
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