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High-temperature emulsifier applied to oil-based drilling fluids and preparation method of high-temperature emulsifier

An oil-based drilling fluid, high-temperature emulsification technology, applied in the field of petroleum drilling fluids, can solve the problems of increasing on-site operation of the main emulsifier and auxiliary emulsifier, increasing the production process and product cost, and detrimental to the stability of the drilling fluid system. and application, reducing production cost, and the effect of strong industrial operability

Pending Publication Date: 2018-03-23
联技精细材料(珠海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, drilling fluid emulsifiers are generally divided into main emulsifiers and auxiliary emulsifiers during production and preparation. The main emulsifiers and auxiliary emulsifiers will increase the difficulty of on-site operations, especially system maintenance, and make the drilling fluid system prone to complications.
Simultaneous production of primary emulsifier and auxiliary emulsifier will increase the production process and product cost, and adding a large amount of emulsifier may reduce the demulsification voltage of the drilling fluid, which is not conducive to the stability of the drilling fluid system

Method used

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  • High-temperature emulsifier applied to oil-based drilling fluids and preparation method of high-temperature emulsifier
  • High-temperature emulsifier applied to oil-based drilling fluids and preparation method of high-temperature emulsifier
  • High-temperature emulsifier applied to oil-based drilling fluids and preparation method of high-temperature emulsifier

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preparation example Construction

[0036] Such as figure 1 Shown, be a kind of preparation method of the high-temperature emulsifier that is applied to oil-based drilling fluid of the present invention, it comprises the following steps:

[0037] A. Preparation of fatty acid amides: Add the fatty acid in the formula amount into the reaction kettle, and heat it to 120-180°C while stirring; add polyethylene polyamine into the reaction kettle, and raise the temperature in the reaction kettle to 150-190°C , react for 4 to 6 hours, measure the acid value of the material every 1 hour during the reaction until the acid value is <10mgKOH / g; cool the temperature of the material to 90 to 120°C, add citric acid and raise the temperature of the reactor to 130 to 140°C, ventilate for 3~5h, measure the amine value of the material every 1h during the reaction, until the amine value<12mgKOH / g; cool the temperature of the material to 50~80°C, add an organic solvent, react for 0.5~1h, and produce Fatty acid amides are obtained;

...

Embodiment 1

[0046] Embodiment 1: the preparation of high temperature emulsifier

[0047] A high-temperature emulsifier applied to oil-based drilling fluid. Based on the sum of the mass percentages of the high-temperature emulsifier being 100%, the composition of the high-temperature emulsifier includes: 30% of fatty acid amide, 35% of oxidized fatty acid, and maleic acid Oil fatty acid 15%, dimer acid 5%, 5# white oil 15%.

[0048] Such as figure 1 Shown, the preparation method of this high temperature emulsifier comprises the following steps:

[0049] A, the preparation of fatty acid amides:

[0050] to 10m 3 Add 3.6t of soybean oil oleic acid to the reactor, start stirring, heat with heat transfer oil, and heat the oleic acid to 130°C while stirring; use a flow pump to add 0.72t of diethylenetriamine to the reactor, and then The temperature device raises the temperature in the reactor to 160-170°C, and the reaction time is 4-6 hours. During the reaction, samples are taken every 1 ho...

Embodiment 2

[0056] Embodiment 2: the preparation of high temperature emulsifier

[0057] A high-temperature emulsifier applied to oil-based drilling fluid. Based on the sum of the mass percentages of the high-temperature emulsifier being 100%, the composition of the high-temperature emulsifier includes: 20% of fatty acid amide, 45% of oxidized fatty acid, and maleic acid Oil fatty acid 20%, trimer acid 5%, 3# white oil 10%.

[0058] In this embodiment, the fatty acid amide is prepared according to the following steps: react tallow oleic acid with triethylenetetramine at a mass ratio of 4.5:1, and after the reaction, add tallow oleic acid at a mass ratio of 4:1 to citric acid Citric acid is reacted, and the final product obtained is mixed with ethylene glycol at a mass ratio of 10:1 to obtain final product. Oxidized fatty acid is a reaction product obtained by reacting linoleic acid with air; maleated tall oil fatty acid is a product obtained by reacting tall oil fatty acid and maleic anh...

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Abstract

The invention discloses a high-temperature emulsifier applied to oil-based drilling fluids and a preparation method of the high-temperature emulsifier, and belongs to the technical field of petroleumdrilling fluids. The high-temperature emulsifier comprises, by mass, 10-45% of fatty acid amide, 30-60% of oxidized fatty acid, 10-30% of Malay acidized tall oil fatty acid, 5-20% of rheological property regulators and 10-30% of mineral oil. The total percentage of the raw materials is 100%. The preparation method includes mixing the fatty acid amide with the oxidized fatty acid, the Malay acidized tall oil fatty acid, the rheological property regulators and the mineral oil, stirring the raw materials at the temperature of 60 DEG C for 1-2 hours of reaction, and discharging the mixture to obtain the high-temperature emulsifier. The high-temperature emulsifier has the advantages of high temperature resistance, high demulsification voltage, low filter loss, capability of stabilizing a drilling fluid system, low adding amount, convenience and effectiveness in use, convenience in popularization and application, and the like. The preparation method has the advantages of simple procedure andstep, convenience in production and greatly reduced production cost.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling fluids, in particular to a high-temperature emulsifier applied to oil-based drilling fluids and a preparation method thereof. Background technique [0002] Drilling fluid is a circulating flushing medium used in oil drilling. Drilling fluids are divided into water-based drilling fluids and oil-based drilling fluids based on the main components. The oil-based drilling fluid is a kind of oil (mainly diesel or mineral oil) as a carrier, various chemical treatment agents and The sol-suspended mixing system with water as the dispersed phase, its main components usually include mineral oil, diesel oil, weighting materials, chemical treatment agents and calcium chloride brine, etc. Compared with water-based drilling fluid, oil-based drilling fluid has stronger anti-slump inhibition, lubricity and good reservoir protection performance, especially suitable for strong water-sensitive and high-te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/36
CPCC09K8/36
Inventor 关玉婷翟炜
Owner 联技精细材料(珠海)有限公司
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