Dissolving method of hydrophobically associating polymer and special stretching device thereof

A technology of hydrophobic association and stretching device, which is applied in the direction of mixing methods, dissolution, chemical instruments and methods, etc., can solve the problems of accelerating the dissolution rate of hydrophobic association polymers and the inability to completely dissolve the solid powder of hydrophobic association polymers, etc. To achieve the effect of increased recovery and high application value

Active Publication Date: 2011-05-18
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, at normal temperature (20-25°C), the solid powder of the hydrophobic association polymer cannot be completely dissolved in water by conventional methods.
[0003] At present, research work on the solubility of hydrophobically associated polymers has been carried out (Han Ming, Xiang Wentao, Zhang Jian. China Offshore Oil and Gas. 2006, 18(1): 28-30; Wang Ying, Ye Zhongbin, Shu Zheng. Offshore Oil .2007, 27 (2): 42-44), the dissolution time of the hydrophobic association polymer under the existing method

Method used

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  • Dissolving method of hydrophobically associating polymer and special stretching device thereof
  • Dissolving method of hydrophobically associating polymer and special stretching device thereof
  • Dissolving method of hydrophobically associating polymer and special stretching device thereof

Examples

Experimental program
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Example Embodiment

[0028] Example 1. Stretching device

[0029] The structure diagram of the stretching device of the present invention is as figure 2 As shown, the marks in the figure are as follows: 1 pulley, 2 adjusting ring, 3 movable grinding wheel, 4 fixed grinding wheel, 5 impeller, 6 inlet, 7 outlet, 8 base.

[0030] The stretching device of the present invention includes a fixed grinding wheel 4 arranged on a base 8, a movable grinding wheel 3 arranged inside the fixed grinding wheel 4, the lower part of which is a circular table body; a distance is provided between the movable grinding wheel 3 and the fixed grinding wheel 4; An adjustment ring 2 is provided on the top of 3, and the narrowest distance between the movable grinding wheel 3 and the fixed grinding wheel 4 can be adjusted by rotating the adjustment ring 2 in the range of 150 μm-500 μm, and the remaining distances are not equidistant; The movable grinding wheel 3 is provided with radial grinding teeth (not shown in the figure), ...

Example Embodiment

[0032] Example 2. Dissolution of hydrophobically associating polymer AP-P4

[0033] The flow chart of the dissolution process of this embodiment is as figure 1 Shown. The marks in the figure are as follows: 9 pools, 10 centrifugal pumps, 11 flow meters, 12 mixing tanks, 13 screw pumps, 14, 15 stretching devices, and 16 mature irrigation.

[0034] The stretching device 14 and the stretching device 15 used in this embodiment are both the stretching device described in Embodiment 1. The distance between the movable grinding wheel and the fixed grinding wheel in the two stretching devices is 400 μm, respectively. And 200μm.

[0035] The brine in the pool 9 is heated to 35°C, and the brine is pumped into the mixing tank 12 under the action of the centrifugal pump 10. A flow meter 11 is connected between the centrifugal pump 10 and the mixing tank 12 to control the flow rate of the brine; Next, the hydrophobically associating polymer AP-P4 powder and salt water are quickly mixed in the m...

Example Embodiment

[0038] Example 3. Dissolution of hydrophobically associating polymer AP-P4

[0039] The flow chart of the dissolution process of this embodiment is as figure 1 Shown. The marks in the figure are as follows: 9 pools, 10 centrifugal pumps, 11 flow meters, 12 mixing tanks, 13 screw pumps, 14, 15 stretching devices, and 16 mature irrigation.

[0040] The stretching device 14 and the stretching device 15 used in this embodiment are both the stretching device described in Embodiment 1. The distance between the movable grinding wheel and the fixed grinding wheel in the two stretching devices is 500 μm, respectively. And 168μm.

[0041] The brine in the pool 9 is heated to 45°C, and the brine is pumped into the mixing tank 12 under the action of the centrifugal pump 10. A flow meter 11 is connected between the centrifugal pump 10 and the mixing tank 12 to control the flow rate of the brine; Next, the hydrophobically associating polymer AP-P4 powder and salt water are quickly mixed in the m...

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Abstract

The invention discloses a quick dissolving method of a hydrophobically associating polymer and a special stretching device thereof. The stretching device comprises a fixed grinding wheel fixed on a base and a moving grinding wheel arranged in the fixed grinding wheel, wherein a space is preserved between the moving grinding wheel and the fixed grinding wheel; the top of the moving grinding wheel is provided with a regulating ring; the moving grinding wheel is provided with grinding teeth; the bottom of the moving grinding wheel is provided with an impeller, and the impeller is arranged in theinner cavity of the base; the fixed grinding wheel is provided with an entrance corresponding to the moving grinding wheel; and the base is provided with an exit corresponding to the impeller. The invention also provides a method for applying the stretching device to dissolve the hydrophobically associating polymer. The hydrophobically associating polymer obtained by using the method can be used for a polymer flooding technologies under a high mineralization condition so as to improve the recovery efficiency of petroleum.

Description

technical field [0001] The invention relates to a dissolving method of an acrylamide polymer and a special stretching device thereof, in particular to a dissolving method of a hydrophobic association polymer and a special stretching device thereof. Background technique [0002] China National Offshore Oil Corporation took the lead in using hydrophobic association polymers in the polymer flooding test of the Bohai Oilfield. After 7 years of field tests, it has achieved obvious effects of increasing oil and reducing water. Hydrophobic association polymer is a kind of polymer with a small amount of hydrophobic groups on the hydrophilic macromolecular chain. When the concentration of the polymer in the aqueous solution reaches a certain level, the hydrophobic effect of the hydrophobic group makes the polymer associate. Combined, the hydrodynamic volume is increased, resulting in an obvious viscosity-increasing effect. In salt water, the hydrophobic association is enhanced, show...

Claims

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Application Information

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IPC IPC(8): B01F3/10B01F13/10B01F7/16B01F23/47
Inventor 姜伟张健刘立伟赵文森向问陶周薇
Owner CHINA NAT OFFSHORE OIL CORP
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