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Hollow polymer microsphere profile control agent and preparation method thereof

A technology of polymer and profile control agent is applied in the field of profile control and preparation of hollow polymer microspheres, which can solve the problem of high cost and achieve the effect of improving utilization rate and reducing construction cost.

Inactive Publication Date: 2017-08-29
SOUTHWEST PETROLEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a hollow polymer microsphere profile control agent and its preparation method for the problem of high cost of existing solid polymer microspheres as a profile control agent

Method used

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  • Hollow polymer microsphere profile control agent and preparation method thereof
  • Hollow polymer microsphere profile control agent and preparation method thereof
  • Hollow polymer microsphere profile control agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of a hollow polymer microsphere profile control agent comprises the following contents: 1.5g Span-80, 0.1g azobisisobutyronitrile are dissolved in 10g divinylbenzene to prepare an oil phase emulsion, 1g acrylamide, 0.5g Sodium acrylate and 0.4g AES were dissolved in 100mL water to prepare an aqueous phase emulsion; 5mL of the aqueous phase emulsion was mixed with the oil phase emulsion, and after stirring for 30min, the remaining 95mL of the aqueous phase emulsion was mixed with the stirring rate at 150 rpm. Slowly add it, while raising the temperature to 70°C, and react for 3 hours; after the reaction, centrifuge the reaction solution at 6000 rpm, and the obtained solid is the hollow polymer microsphere profile control agent.

[0026] The scanning electron micrograph of this hollow polymer microsphere profile control agent is as follows figure 1 As shown, after determination, its average particle size is 41.32 μm.

Embodiment 2

[0028] A preparation method of a hollow polymer microsphere profile control agent comprises the following contents: 3g Span-60, 0.2g azobisisobutyronitrile are dissolved in 12g divinylbenzene to prepare an oil phase emulsion, 1.5g acrylamide, 1g2- Sodium acrylamide-2-methylpropane sulfonate and 0.6g AES were dissolved in 100mL water to prepare an aqueous phase emulsion; 3mL of the aqueous phase emulsion was mixed with the oil phase emulsion, and after stirring for 30min, the stirring rate was maintained at 200 rpm. In some cases, slowly add the remaining 97mL of aqueous phase emulsion into it, and at the same time raise the temperature to 70°C, and react for 5h; .

[0029] The scanning electron micrograph of this hollow polymer microsphere profile control agent is as follows figure 2 As shown, the average particle size was determined to be 29.17 μm.

Embodiment 3

[0031] A preparation method of a hollow polymer microsphere profile control agent comprises the following contents: 3g Span-80, 0.1g oil azobisisobutyronitrile are dissolved in 8g ethylene glycol dimethacrylate to prepare an oil phase emulsion, and 2g propylene Amide, 0.5g methacryloyloxyethyltrimethylammonium chloride and 0.6g AOS were dissolved in 100mL water to prepare a water phase emulsion; 4mL water phase emulsion was mixed with oil phase emulsion, and after stirring for 30min, the stirring rate was maintained at 200 In the case of constant rpm, slowly add the remaining 96mL of the aqueous phase emulsion, and at the same time raise the temperature to 70°C, and react for 3 hours; after the reaction, centrifuge the reaction solution at 6000 rpm, and the obtained solid is hollow polymerization Microsphere profile control agent.

[0032] The scanning electron micrograph of this hollow polymer microsphere profile control agent is as follows image 3 As shown, the average par...

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Abstract

The invention belongs to the field of enhancing of oil recovery in petroleum engineering, and particularly relates to a hollow polymer microsphere profile control agent and a preparation method thereof. The hollow polymer microsphere profile control agent is prepared from the following steps of using acrylamide and an ionic monomer as functional monomers, using a hydrophobic monomer with double unsaturated double bonds as a crosslinking agent, and polymerizing by water-in and oil-in double emulsions, so as to obtain the hollow polymer microsphere profile control agent, wherein the average particle size is 28 to 42mu m. Compared with the prior art, the hollow polymer microsphere profile control agent has the advantages that the hollow polymer microsphere profile control is used for replacing the existing solid polymer microsphere profile control, so that the utilization rate of the raw material of the profile control agent is greatly improved, and the construction cost of the polymer microsphere is reduced.

Description

technical field [0001] The invention belongs to the field of enhanced oil recovery in petroleum engineering, and in particular relates to profile control of hollow polymer microspheres and a preparation method thereof. Background technique [0002] In recent years, due to the good application effect of polymer spherical particles in the field of reservoir profile control and enhanced oil recovery, more and more attention has been paid by major oilfield companies and many scientific researchers at home and abroad. At present, domestic and foreign In the field construction of reservoir profile control in major oilfields, the polymer spherical particle profile control agents used are solid polymer microspheres. Due to the huge amount of profile control agent used in profile control construction, solid polymer microspheres are used as profile control agents. dissection agent, the cost is relatively high. [0003] Aiming at this problem, the present invention provides a hollow p...

Claims

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Application Information

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IPC IPC(8): C08F212/36C08F220/56C08F220/06C08F220/38C08F222/14C08F220/34C08F2/30C09K8/512
CPCC08F2/30C08F212/36C08F222/14C09K8/512C08F220/56C08F220/34C08F220/382
Inventor 贺杰岳湘安杨长春
Owner SOUTHWEST PETROLEUM UNIV
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