A kind of low fluorescence lubricant for drilling fluid and its preparation method

A lubricant and low-fluorescence technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of decreased lubricating performance, lack of anti-calcium ion pollution ability, poor anti-salt pollution ability, etc., and achieve lubricating performance High, improve the success rate and effect, strong effect of high temperature resistance

Active Publication Date: 2022-04-12
XINJIANG TARIM OILFIELD CONSTR ENG
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  • Application Information

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Problems solved by technology

[0006] Aiming at the problem of the background technology, the present invention provides a low-fluorescence lubricant for drilling fluid, which solves the problem that the existing low-fluorescence lubricant has poor resistance to salt pollution, does not have the ability to resist calcium ion pollution, and the lubricating performance will be greatly reduced in high-temperature environments. question

Method used

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  • A kind of low fluorescence lubricant for drilling fluid and its preparation method
  • A kind of low fluorescence lubricant for drilling fluid and its preparation method
  • A kind of low fluorescence lubricant for drilling fluid and its preparation method

Examples

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Effect test

Embodiment 1

[0065] The mass fraction of industrial coconut oil in the fixed formula is 20%, the mass fraction of the additive (the formula selected by the additive in this test is a mixture of urea and sodium hydroxide according to the mass ratio of 3:1) is 10%, and the mass fraction of demineralized water is 10%. 10%, the mass fraction of industrial oleic acid is respectively 25%, 26%, 27%, 28%, 29%, and 30%, and the rest of the components are supplemented with industrial white oil. The temperature resistance, salt resistance and calcium ion pollution resistance of the samples were tested respectively. The specific experimental results are:

[0066] Such as Figure 4 As shown, with the increase of the mass fraction of industrial oleic acid, the anti-salt pollution ability of the lubricant used in this embodiment also increases. When the amount of industrial oleic acid exceeds 28%, the anti-salt pollution ability of the sample reaches the maximum . Such as Figure 5 As shown, with the...

Embodiment 2

[0068] The mass fraction of industrial oleic acid in the fixed formula is 30%, the mass fraction of the additive (the formula selected by the additive in this test is a mixture of urea and sodium hydroxide according to the mass ratio of 3:1) is 10%, and the mass fraction of softened water is 10%. 10%, industrial coconut oil mass fractions are respectively 15%, 16%, 17%, 18%, 19%, 20% 1, and all the other ingredients are supplemented with industrial white oil. The temperature resistance, salt resistance and calcium ion pollution resistance of the samples were tested respectively. The specific experimental results are:

[0069] Such as Figure 6 Shown, along with the increase of industrial coconut oil mass fraction in the present embodiment adopts the anti-sodium chloride pollution ability of lubricant almost no change. Such as Figure 7 As shown, along with the increase of the mass fraction of industrial coconut oil, the anti-calcium ion pollution ability of the lubricant us...

Embodiment 3

[0071] The mass fraction of industrial oleic acid in the fixed formula is 30%, the mass fraction of demineralized water is 10%, the mass fraction of industrial coconut oil is 20%, the additive (the formula that additive is selected in this test is urea and sodium hydroxide according to the quality Ratio 3:1 mixture) mass parts are respectively 5%, 6%, 7%, 8%, 9%, 10%, and the remaining ingredients are supplemented with industrial white oil. The temperature resistance, salt resistance and calcium ion pollution resistance of the samples were tested respectively.

[0072] The specific experimental results are:

[0073] Such as Figure 9 As shown, with the increase of the mass fraction of the additive, the anti-sodium chloride pollution ability of the lubricant used in this embodiment hardly changes. Such as Figure 10 As shown, with the increase of the mass fraction of additives, the anti-calcium ion pollution ability of the lubricant used in this embodiment has almost no chan...

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Abstract

The invention discloses a low-fluorescence lubricant for drilling fluid and a preparation method thereof, which solves the problems that the existing low-fluorescence lubricant has poor anti-salt pollution ability, does not have anti-calcium ion pollution ability, and the lubricating performance will be greatly reduced in a high-temperature environment. The raw material of the lubricant is a mixed liquid composed of industrial oleic acid, industrial coconut oil, industrial white oil, demineralized water and additives; the mass fraction of industrial oleic acid is 25-30%; the mass fraction of industrial coconut oil is 15-30%. 20%, the mass fraction of industrial white oil is 35-45%, the mass fraction of demineralized water is 10%, and the mass fraction of additives is 5-10%.

Description

technical field [0001] The invention relates to the technical field of chemical production, in particular to a low-fluorescence lubricant for drilling fluid and a preparation method. Background technique [0002] Currently commercially available low-fluorescence lubricants are mostly based on base oil (low-fluorescence white oil or other oils), and other non-fluorescence or low-fluorescence materials with high lubricating ability are added for compounding. In terms of fluorescence level At present, the fluorescence level of commonly used low fluorescence lubricants is mostly 3-4, and most of them are 4. However, the existing low fluorescence lubricants have the following defects: [0003] 1. The ability to resist salt pollution is poor. Almost all existing low-fluorescence lubricants can only work in the slurry contaminated with sodium chloride below 20% when tested. [0004] 2. The impact of calcium ion pollution cannot be avoided. [0005] 3. The maximum operating temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035
CPCC09K8/035C09K2208/34
Inventor 张文龙李彬胡金虎靳波罗强贾学军
Owner XINJIANG TARIM OILFIELD CONSTR ENG
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