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Anti-wear anti-seize lubricant for drilling fluid

An anti-seize lubricant and drilling fluid technology, applied in the field of drilling, can solve the problems of unbearable high temperature of lubricating film, slow film-forming speed of lubricating film, weak anti-wear and friction-reducing effect, etc. The effect of improving the film forming speed and the safety of use

Active Publication Date: 2016-03-02
CHENGDU DEDAO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 1. Mainly emphasize the effect of anti-seizing and lubrication, and the effect of anti-wear and anti-friction is weak
[0011] 2. The film forming speed of the lubricating film is slow and the strength of the lubricating film is low
[0012] 3. The high-speed rotating friction of the drilling tool generates heat, and the lubricating film cannot bear the local high temperature

Method used

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  • Anti-wear anti-seize lubricant for drilling fluid
  • Anti-wear anti-seize lubricant for drilling fluid
  • Anti-wear anti-seize lubricant for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] refer to figure 1 Shown, a kind of anti-wear and anti-seize lubricant for drilling fluid is made up of following components by weight: 70.5 parts of epoxidized (and / or sulfonated) modified vegetable oil (specifically U.S. Ruianbo H1 food grade general purpose lubricant), 5 parts tri-n-hexadecyl borate, 5 parts trioctyl borate, 10 parts triethylamine, 4 parts samarium dialkyl dithiophosphate, 0.5 parts (+)-2,2' - Methylenebis[(3aR,8aS)-3a,8a-dihydro-8H-indenebenzo[1,2-d]oxazole, 5 parts emulsifier.

[0034]

[0035]

[0036] The meanings of the above indicators are as follows:

[0037] Apparent viscosity increase value, density change value: characterize the influence of lubricant on the basic properties of drilling fluid;

[0038] The increase rate of the anti-wear and pressure-bearing capacity of the sample relative to diesel oil (or white oil) represents the theoretical influence of the lubricant on the anti-wear and anti-friction performance of the drilling f...

Embodiment 2

[0086] refer to figure 1 As shown, a kind of anti-wear and anti-seize lubricant for drilling fluid is made up of following components by weight: 58.5 parts of epoxidized (and / or sulfonated) modified vegetable oil (specifically U.S. Ruianbo H1 food grade general purpose lubricant), 7.5 parts tri-n-hexadecyl borate, 7.5 parts trioctyl borate, 15 parts triethylamine, 6 parts samarium dialkyl dithiophosphate, 0.5 parts (+)-2,2' -Methylenebis[(3aR,8aS)-3a,8a-dihydro-8H-indenobenzo[1,2-d]oxazole, 5 parts of emulsifier (the test method is the same as in Example 1).

[0087]

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Abstract

The invention discloses an anti-wear anti-seize lubricant for a drilling fluid, and belongs to the field of well drilling. The anti-wear anti-seize lubricant comprises the components: epoxidized (and / or sulfonated) modified vegetable oil, at least two organic boric acid esters with different carbon chains, triethylamine, samarium dialkylphosphorodithiloate, (+)-2,2'-methylenebis[(3aR,8aS)-3a,8a-dihydro-8H-indeno[1,2-d]oxazole, and an emulsifier, wherein the mass ratio of the organic boric acid esters to triethylamine to samarium dialkylphosphorodithiloate is 5 to 5 to 2, the total amount of the three components accounts for 20%-36% of the total mass of the product, and the amount of the emulsifier accounts for 5% of the total mass of the product. The anti-wear anti-seize lubricant for the drilling fluid has stronger anti-wear, anti-friction and high-temperature-resistant performance.

Description

technical field [0001] The invention belongs to the field of well drilling. Background technique [0002] The rapid development of China's economy has led to a sharp increase in energy consumption. The most important types of energy are oil and natural gas. Drilling engineering is the primary means of obtaining oil and gas resources. With the continuous development of petroleum exploration and development, the complex situation faced by drilling engineering has become increasingly prominent. Extended reach horizontal wells, directional wells, long open hole wells, and wells with complex structures are gradually increasing. In particular, the performance of water-based drilling fluids puts forward higher requirements. At present, conventional lubricants have problems such as low extreme pressure film strength, poor lubricating effect, high fluorescence level, poor temperature resistance and high toxicity, which are difficult to meet the needs of modern drilling. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035
CPCC09K8/035C09K2208/34
Inventor 操盛章操亮吴娇余越琳林友建易偲文
Owner CHENGDU DEDAO IND
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