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Thermal stabilizer for oilfield and preparation method thereof

A heat stabilizer, oil field technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of human health hazards, high energy consumption of preparation methods, inability to effectively reduce the use concentration of polymer systems, etc. cost saving effect

Inactive Publication Date: 2018-11-23
YANTAI ZHIBEN INTPROP OPERATIONS MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What disadvantages and deficiencies exist in the present invention: (1) poor temperature and salt resistance; (2) can not effectively reduce the use concentration of the polymer system; (3) high cost, high energy consumption and slow preparation speed of the preparation method; (4) ) Formaldehyde has strong carcinogenic and cancer-promoting effects, and long-term use will cause harm to human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Accurately weigh raw materials (kg): hydrogen peroxide 10, ammonium sulfate 20, polyethylene glycol 2, urea 10 and deionized water 900.

[0022] Preparation:

[0023] (a) Add hydrogen peroxide to deionized water at 15°C, and stir evenly at 50 rpm to prepare aqueous solution A;

[0024] (b) Weigh ammonium sulfate at 15°C and add it to solution A, and stir evenly at 100 rpm to obtain solution B;

[0025] (c) Polyethylene glycol was added to solution B at 15°C, and stirred at a stirring speed of 300 rpm for 20 minutes to obtain solution C;

[0026] (d) Add urea into the solution C at 15° C. and stir for 10 minutes at a stirring speed of 300 rpm to obtain the product.

Embodiment 2

[0028] Accurately weigh raw materials (kg): hydrogen peroxide 11, ammonium sulfate 21, polyethylene glycol 2.1, urea 12 and deionized water 910.

[0029] (a) Add hydrogen peroxide to deionized water at 16°C and stir evenly at 60 rpm to prepare aqueous solution A;

[0030] (b) Weigh ammonium sulfate at 16°C and add it to solution A, and stir evenly at 110 rpm to obtain solution B;

[0031] (c) Polyethylene glycol was added to solution B at 16°C, and stirred at a stirring speed of 350 rpm for 21 minutes to obtain solution C;

[0032] (d) Add urea to solution C at 16° C. and stir for 11 minutes at a stirring speed of 350 rpm to obtain the product.

Embodiment 3

[0034] Accurately weigh raw materials (kg): hydrogen peroxide 12, ammonium sulfate 25, polyethylene glycol 2.5, urea 15 and deionized water 950.

[0035] Preparation:

[0036] (a) Add hydrogen peroxide to deionized water at 17°C and stir evenly at 80 rpm to prepare aqueous solution A;

[0037] (b) Weigh ammonium sulfate at 17°C and add it to solution A, and stir evenly at 120 rpm to obtain solution B;

[0038] (c) Polyethylene glycol was added to solution B at 17°C, and stirred at a stirring speed of 400 rpm for 25 minutes to obtain solution C;

[0039] (d) Add urea to solution C at 17°C, and stir for 15 minutes at a stirring speed of 400 rpm to obtain the product.

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PUM

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Abstract

The invention discloses a thermal stabilizer for an oilfield as well as a preparation method and application thereof. The thermal stabilizer is prepared from the following components in parts by weight: 10 to 15 parts of hydrogen peroxide, 20 to 30 parts of ammonium sulfate, 2 to 3 parts of polyethylene glycol, 10 to 30 parts of urea and 900 to 1000 parts of de-ionized water. The components are uniformly mixed to obtain the thermal stabilizer; the thermal stabilizer is used for oil displacement or plugging control of an oilfield polymer. The thermal stabilizer disclosed by the invention has ahigh viscosity retention rate; the preparation method is simple and a preparation speed is rapid; the cost is relatively low, and the strength and stability of the polymer can be improved relatively well.

Description

technical field [0001] The invention relates to an oil field chemical agent and a preparation method thereof, in particular to a heat stabilizer for oil field and a preparation method thereof. technical background [0002] At present, after the cross-linked polymer system commonly used in oilfield profile control and water plugging is injected into the formation, because the polymer in it will degrade under the influence of temperature, the formed spatial network structure is easy to loose, resulting in the decrease of cross-linking strength and stability time, making the adjustment The water blocking effect is affected. In order to improve the thermal stability of the cross-linked system, improve the cross-linking effect of the cross-linked system, and increase the effective time of water plugging and profile control, a thermal stabilizer for the cross-linked polymer system was invented. Polymer stabilizers such as thermal polyvinyl chloride and tin stabilizer are commonly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/588C09K8/514C09K8/508
CPCC09K8/588C09K8/5083C09K8/514
Inventor 王敏
Owner YANTAI ZHIBEN INTPROP OPERATIONS MANAGEMENT CO LTD
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