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Primary emulsifier and preparation method therefor, emulsifier composition and application thereof, and oil-based drilling fluid

A technology of main emulsifier and emulsifier, which is applied in the field of oil-based drilling fluid, can solve the problems of adverse environmental impact and high preparation cost, and achieve the effect of cheap source, good temperature resistance stability and wide source

Active Publication Date: 2016-03-30
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, oil-based drilling fluids also have some disadvantages, such as high preparation costs and adverse effects on the environment.

Method used

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  • Primary emulsifier and preparation method therefor, emulsifier composition and application thereof, and oil-based drilling fluid
  • Primary emulsifier and preparation method therefor, emulsifier composition and application thereof, and oil-based drilling fluid
  • Primary emulsifier and preparation method therefor, emulsifier composition and application thereof, and oil-based drilling fluid

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Experimental program
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specific Embodiment approach

[0027] According to a specific embodiment of the present invention, the amide compound is prepared in the following manner: at room temperature, mix the polyamine compound and the first unsaturated fatty acid, stir at a low speed of 80-100r / min for 20-30min, Then adjust the pH value of the obtained mixture to 7-9, then use an oil bath to heat the mixture to 220-230°C, and at the same time use a water separator to divide water, and maintain the temperature at 220-230°C for 3-5 hours, Then cool to room temperature to obtain "incomplete amide"; then at room temperature, mix "incomplete amide" with acid anhydride and / or polycarboxylic acid, and then use a water bath to heat the resulting mixture to 75-90°C, at 200- Stir at 500r / min for 6-10 hours.

[0028] The fatty acid compounds can be obtained commercially, or can be prepared according to various methods known in the art. Preferably, the fatty acid compound is prepared according to the following method: at 150-180°C, the secon...

Embodiment 1

[0052] This embodiment is used to illustrate the preparation method of the primary emulsifier provided by the present invention.

[0053] (1) reactant is diethylenetriamine in molar ratio under normal temperature: oleic acid=1:1 (being the consumption of the diethylenetriamine calculated by primary amino group and the consumption of the oleic acid calculated by carboxylic acid group) The molar ratio is 2:1) mixed, and stirred at 250r / min for 20min, then the pH value of the resulting mixture was adjusted to 7, and then the mixture was heated to 225°C using an oil bath, and water was divided by a water divider at the same time, And maintain the temperature at 225°C for 5 hours, then cool to room temperature to obtain the intermediate product "incomplete amide".

[0054] At normal temperature, "incomplete amide" is mixed with oxalic acid (the molar ratio of the amount of diethylenetriamine in terms of primary amino groups to the amount of oxalic acid in terms of carboxylic acid g...

Embodiment 2

[0058] This embodiment is used to illustrate the preparation method of the primary emulsifier provided by the present invention.

[0059] (1) Under normal temperature, the reactant is tetraethylenepentamine in molar ratio: linoleic acid=1:1 (that is, the consumption of tetraethylenepentamine calculated by primary amino groups and the amount of linoleic acid calculated by carboxylic acid groups The molar ratio of the amount used is 2:1) mixed, and stirred at 250r / min for 40min, then the pH value of the obtained mixture was adjusted to 9, and then the mixture was heated to 230°C with an oil bath, and at the same time, it was divided by water separation water, and the temperature was maintained at 230 ° C for 3 hours, cooled to room temperature, and the intermediate product "incomplete amide" was obtained.

[0060] At normal temperature, "incomplete amide" is mixed with malonic acid (the molar ratio of the amount of tetraethylenepentamine in terms of primary amino groups and the ...

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Abstract

The present invention relates to the field of well drilling, and discloses a primary emulsifier and a preparation method therefor, an emulsifier composition and an application thereof, and oil-based drilling fluid. The primary emulsifier comprises an amide compound and a fatty acid compound; the amide compound comprises at least one amide group, at least one unsaturated double bond, and at least one alkyl containing 14-30 carbon atoms; and the fatty acid compound comprises 20-80 carbon atoms. When the primary emulsifier is used for drilling fluid base mud, the primary emulsifier has a good emulsifying effect and excellent temperature resistance. In addition, the synthetic materials of the primary emulsifier provided by the present invention are widely available and inexpensive, non-fluorescent, and environmentally friendly, and thus the primary emulsifier has great prospects for industrial applications.

Description

technical field [0001] The present invention relates to a primary emulsifier, a method for preparing the primary emulsifier, a primary emulsifier prepared by the method, an emulsifier composition, and the primary emulsifier or emulsifier composition as a drilling fluid emulsifier application and an oil-based drilling fluid. Background technique [0002] With the development of the petroleum industry, deep oil and gas resources have become my country's strategic replacement energy source, and it is also the focus of increasing oil and gas reserves at present and in the future. In recent years, with the increase in the number of deep wells and ultra-deep wells, higher requirements have been placed on the temperature resistance of drilling fluids. General water-based drilling fluids can no longer meet site requirements. However, the high temperature resistance of oil-based drilling fluids has gradually attracted attention and has been put into use in large quantities. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035C09K8/34
Inventor 蒋官澄邓正强黄贤斌贺垠博王玺程泽普张领宇叶龙云史赫
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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