Compound type vegetable oil lubricating agent for drilling fluid and preparation method thereof

A vegetable oil, composite technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of inability to meet the low-cost requirements of lubricants, unsuitable for large-scale production applications, increased production costs, etc., and achieves low fluorescence levels. , Good load-bearing and thermal stability, and the effect of preventing sticking accidents

Inactive Publication Date: 2010-06-30
无锡润鹏复合新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lubricants for vegetable oil drilling fluids also have disadvantages such as low load-carrying capacity and poor thermal stability. Adding antioxidants or using biological methods to modify them are common means to solve the above problems, but these methods can improve the oxidation of vegetable oils. Stability and load-carrying capacity, but it also causes a large increase in production costs, which cannot meet the usual low-cost requirements for drilling fluid lubricants, and is not suitable for large-scale production applications

Method used

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  • Compound type vegetable oil lubricating agent for drilling fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 5g of sodium lauryl sulfate and add it to 10ml of water, stir to dissolve it completely, then add 1g of sodium carboxymethylcellulose and 1g of polyvinylpyrrolidone in turn, stir again to dissolve it completely, and get a mixed solution for later use; take 40g of rapeseed oil , add 5g of Sipan 80, ultrasonically disperse at 60°C for 30 minutes, take 2g of natural graphite and add it, continue ultrasonically dispersing for 30 minutes; / min) and stirred for 8 hours to obtain a compound vegetable oil lubricant for drilling fluid.

[0030] Measure the friction performance curve of the above-mentioned composite vegetable oil lubricant for drilling fluid, and compare it with the commercially available common vegetable oil lubricant and the lubricant for common drilling fluid. The obtained results are as follows figure 1 As shown, among the figure a is the friction performance curve of ordinary vegetable oil lubricant, b is the friction performance curve of ordinary drill...

Embodiment 2

[0032] Take 5g of sodium lauryl sulfate and add it to 10ml of water, stir to dissolve it completely, add 2g of sodium carboxymethylcellulose, and stir again to dissolve it completely to obtain a mixed solution for later use; take 40g of soybean oil, add 5g of Sipan 80 , ultrasonically disperse at 60°C for 30 minutes, add 1.5g of serpentine into it, and continue to ultrasonically disperse for 30 minutes; add the mixed solution to the above-mentioned completely dispersed soybean oil, and stir in a high-speed mixer (rotating speed is 1000r / min) for 8 hours, the compound vegetable oil lubricant for drilling fluid is obtained.

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Abstract

The invention discloses a compound type vegetable oil lubricating agent for a drilling fluid and a preparation method thereof. The compound type vegetable oil lubricating agent for the drilling fluid with favorable oiliness, no toxicity, low fluorescent level and favorable bearing and thermostabilized performance is prepared by taking a vegetable oil leftover which is low in price and easy to obtain, lauryl sodium sulfate, sbane 80, sodium carboxymethylcellulose, polyvinylpyrrolidone and the like as main raw materials, adding a solid lubricating agent which is graphite or serpentine and usinga simple and environment-friendly production method, so that not only the production cost is greatly reduced, but also any toxic and harmful action on the environment is not generated in the production process. The compound type vegetable oil lubricating agent for the drilling fluid is not only applied to drilling, but also can be applied to producing wells, can effectively inhibit the hydrous expansion of mud shale, consolidate the well wall and prevent the sticking accidents and is especially suitable for industrial production on a large scale.

Description

technical field [0001] The invention relates to a lubricant for drilling fluid, in particular to a compound vegetable oil lubricant for drilling fluid and a preparation method thereof. Background technique [0002] During the drilling process of oil extraction, as the drill bit goes deeper, the frictional resistance between the drill bit and the rock increases continuously, and the torque increases continuously, which causes obvious wear on the drill bit. Adding lubricants to the drilling fluid can significantly reduce friction and wear. Extend drill life. Common lubricants for drilling fluids include mineral oil and vegetable oil. Mineral oil lubricants for drilling fluids are rarely used because they are non-degradable, pollute the environment, have high fluorescence levels, and affect geological analysis. Vegetable oil-based lubricants for drilling fluids have become a promising lubricant for drilling fluids because of their low fluorescence levels and non-toxic effects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035C09K8/514
Inventor 李长生王万杰唐华冯桂双
Owner 无锡润鹏复合新材料有限公司
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