A kind of pickering emulsion and its preparation method and its application in heavy oil emulsification and viscosity reduction

An emulsion and heavy oil technology, applied in chemical instruments and methods, mechanical equipment, drilling compositions, etc., can solve the problems of long-term stability, high cost, low utilization rate of waste slag, etc., and achieve emulsification and viscosity reduction. Good effect, cost reduction, and the effect of reducing the cost of heavy oil extraction

Active Publication Date: 2021-10-01
RES INST OF PETROLEUM EXPLORATION & DEV SHENGLI OILFIELD CO LTD SINOPEC +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a Pickering emulsion and its preparation method and its application in heavy oil emulsification and viscosity reduction, so as to solve the low utilization rate of waste slag in the prior art, and existing heavy oil emulsification and viscosity reduction methods have High cost, not long-term stability

Method used

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  • A kind of pickering emulsion and its preparation method and its application in heavy oil emulsification and viscosity reduction
  • A kind of pickering emulsion and its preparation method and its application in heavy oil emulsification and viscosity reduction
  • A kind of pickering emulsion and its preparation method and its application in heavy oil emulsification and viscosity reduction

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Effect test

Embodiment 1

[0040] The stability study of embodiment 1 Pickering emulsion

[0041] 1.1 Effect of solid particle type on the stability of Pickering emulsion

[0042] At room temperature (25°C), the oil-water volume ratio in the aviation kerosene-water system is selected to be 25ml / 25ml, and different solid particles (S115 type mineral powder, nano-SiO 2 , MgAl hydrotalcite, nano-Al 2 o 3 , nanometer ZnO) 1g, after preparing the Pickering emulsion, let it stand for a week, and observe the emulsion water phase height, emulsion height and oil phase height. The stability of the emulsion prepared with different solid particles is shown in Table 3.

[0043] Table 3: Stability of Pickering emulsions prepared with different solid particles

[0044] Solid particles S115 SiO 2

MgAl hydrotalcite Al 2 o 3

ZnO Emulsification index / % 78 70 65 34 5 Proportion of water phase / % 22 30 0 42 45 Proportion of oil phase / % 0 0 35 24 50

[0045] ...

Embodiment 2

[0076] Example 2 Research on the Viscosity Reducing Effect of Pickering Emulsion to Crude Oil

[0077] 2.1 Comparison of the effects of Pickering emulsion, aviation kerosene-polymer water system and aviation kerosene-deionized water system on the viscosity reduction effect of crude oil

[0078] At 60°C, prepare a heavy oil-water system (the volume ratio of heavy oil-mineralized water is 3:7), and then add the same amount of Pickering emulsion, solid particle-free Aviation kerosene-water system solution (containing carboxyethyl cellulose and sodium dodecylbenzene sulfonate in the water phase), aviation kerosene-water system solution not containing solid particles and polymers, after measuring respectively adding the same amount, the The impact on the viscosity of the heavy oil-water system is shown in Table 12, 13 and 14.

[0079] Table 12: Changes in Viscosity of Heavy Oil-Water System with the Addition of Pickering Emulsion

[0080] Amount / % 0 2 4 6 8 10 12...

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Abstract

The present invention provides a kind of Pickering emulsion and its preparation method and the application in thick oil emulsification viscosity reduction, described method comprises the following steps: S1: configure carboxyethyl cellulose concentration at room temperature to be 1-5g / L, ten The concentration of sodium dialkylbenzene sulfonate is an aqueous solution of 0.5-1.5g / L; S2: adding slag to the aqueous solution prepared in step S1, stirring evenly, and the addition of the slag is 0.5-1.5g / L; and S3 : adding an oil phase to the solution prepared in step S2, so that the oil-water volume ratio is 3:7-7:3, and stirring evenly to obtain an oil-in-water Pickering emulsion. This method not only solves the waste utilization problem of slag, but also can prepare very stable Pickering emulsion to emulsify and reduce the viscosity of heavy oil, which serves multiple purposes. Moreover, the source of slag is relatively wide, which reduces the cost of heavy oil exploitation.

Description

technical field [0001] The invention relates to the field of thick oil emulsification and viscosity reduction, and more specifically relates to a Pickering emulsion, a preparation method thereof and an application in heavy oil emulsification and viscosity reduction. Background technique [0002] Slag is a by-product of the blast furnace ironmaking process. In the process of ironmaking, iron oxide is reduced to metallic iron at high temperature, and impurities such as silica and alumina in iron ore react with lime to form a melt with silicate and aluminosilicate as the main components. After quenching, it becomes loose and porous granular matter, which is blast furnace slag, referred to as slag. The stacking of slag not only pollutes the environment, but also wastes valuable land resources. Most of the slag is used extensively and in large quantities, with low efficiency, and it is difficult to produce good economic benefits. [0003] In recent years, the production of hea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/58F17D1/17
CPCC09K8/58F17D1/17
Inventor 祝仰文杨敬一石静王红艳徐心茹朱志强
Owner RES INST OF PETROLEUM EXPLORATION & DEV SHENGLI OILFIELD CO LTD SINOPEC
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