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Solid emulsifier used for oil base drilling fluid, preparation method thereof and application of oil base drilling fluid

An oil-based drilling fluid and emulsifier technology, which can be applied in chemical instruments and methods, preparation of organic compounds, compositions of drilling holes, etc. The effect of significant economic benefits

Active Publication Date: 2014-08-13
中石化石油工程技术服务有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method also has the disadvantages of numerous steps and complicated process.

Method used

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  • Solid emulsifier used for oil base drilling fluid, preparation method thereof and application of oil base drilling fluid
  • Solid emulsifier used for oil base drilling fluid, preparation method thereof and application of oil base drilling fluid
  • Solid emulsifier used for oil base drilling fluid, preparation method thereof and application of oil base drilling fluid

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Embodiment Construction

[0024] The amide surfactant mentioned in the present invention has the following molecular structure:

[0025]

[0026] Wherein R is a saturated or unsaturated, linear, alkyl chain with 12 to 22 carbon atoms.

[0027] The amide surfactant of the present invention is usually obtained by reacting an organic acid with diethylenetriamine to obtain an intermediate, and then an acid anhydride is added for further reaction to obtain the emulsifier of the present invention.

[0028] The chemical equation of synthesizing this emulsifier is as follows:

[0029] (1) Synthetic intermediates

[0030]

[0031] (2) Synthesis of the target product

[0032]

[0033] Taking oleic acid, palmitic acid, lauric acid and tall oil fatty acid as examples of organic acids to illustrate the specific preparation method:

[0034] In a reactor equipped with a stirrer, a reflux condenser, and a water separator, add 1 mol of oleic acid, and when heated to 90°C, add 1 mol of diethylenetriamine,...

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Abstract

The invention relates to a solid emulsifier used for oil base drilling fluid, a preparation method and an application of the oil base drilling fluid. The preparation method comprises the following steps: adding diethylenetriamine in organic acidity, adding a catalyst, heating to the temperature of 175-185 DEG C, and reacting for 1-3 hours to obtain an intermediate product which has a code name AMI-1. cooling the reaction temperature to 90-120 DEG C, adding acid anhydrides, continuously reacting for 2-4 hours, cooling to the room temperature, wherein the products is the dark brown solid, using a pulverizer for crushing to obtain the brown-red solid powder which is the emulsifier with code name EmuL-S. The emulsifier has good emulsification effect on the diesel oil, the white oil and a synthesis group, and has strong anti-temperature capability, and is cooperated with organic soil, a filtrate reducer, a wetting agent and a weighting material for constructing a high performance oil base drilling fluid system; because that the emulsifier is the powdery solid, so that the influence due to environment is little, and the storage and transport are convenient.

Description

technical field [0001] The invention relates to an oil-based drilling fluid and a solid emulsifier, in particular to a solid emulsifier for the oil-based drilling fluid, a preparation method and an application in the oil-based drilling fluid. Background technique [0002] Drilling fluid refers to the circulating flushing medium used in the hole during drilling. Drilling fluid can be divided into water-based drilling fluid, oil-based drilling fluid, gas-based drilling fluid, etc. according to the dispersion medium (continuous phase). Compared with water-based drilling fluids and gas-based drilling fluids, oil-based drilling fluids have strong inhibitory properties, can stabilize the well wall, prevent collapse, have good temperature resistance and lubricating properties, and are suitable for deep wells and high-inclination drilling fluids. Wells, high-temperature wells and other difficult wells and complex formation drilling. Oil-based drilling fluid is an emulsion syst...

Claims

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Application Information

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IPC IPC(8): C09K8/035C09K8/36C07C233/38C07C231/10C07C231/12
CPCC07C231/02C07C231/12C07C233/38C09K8/035C09K8/36
Inventor 王旭东郭保雨王宝田陈二丁何兴华张海青王俊杨龙波祁亚男钟春
Owner 中石化石油工程技术服务有限公司
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