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Environment-friendly lubricant for oil gas field metallic tube column construction

A kind of lubricating fluid and environment-friendly technology, applied in the field of environment-friendly lubricating fluid for metal pipe string construction in oil and gas fields, can solve the problems of poor dispersibility, unstable lubricating fluid, unfavorable environmental protection, etc., and achieve good dispersibility and stability, no fluorescence and Toxic, highly biodegradable effects

Inactive Publication Date: 2018-10-16
成都创巨油气工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these lubricants also have disadvantages: their poor dispersion and the instability of the prepared lubricating liquid make the actual construction process of metal pipe strings more difficult, and the effect is not ideal; at the same time, due to the addition of oil in the lubricant, it will lead to the waste of lubricating oil in the later stage. Difficult liquid handling, not conducive to environmental protection
[0003] In oil and gas fields, when coiled tubing is used for well drilling and other operations, oily lubricants are usually used in conjunction with a single hydraulic oscillator downhole tool for construction. This method is difficult to ensure that the operation is in place smoothly, and the operation speed is relatively slow.

Method used

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  • Environment-friendly lubricant for oil gas field metallic tube column construction

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An environment-friendly lubricating fluid for metal pipe string construction in an oil and gas field, the processing steps of which are as follows:

[0021] S1, extract 1000kg oil raw material from rapeseed, measure initial iodine value, put into reaction kettle;

[0022] S2. Add 100 kg of 30% hydrogen peroxide and 100 kg of oxalic acid solution into the reaction kettle containing 1000 kg of oil raw material in step S1, and stir, gradually warming up to 50° C., and continue stirring for 7 hours;

[0023] S3, the iodine value or the HLB value in the reaction kettle in the detection step S2, if the iodine value is 80% of the initial iodine value in the raw material or the HLB value is 8.8 at this time, then form a qualified water-soluble surfactant;

[0024] S4, add compound surfactant and synergist successively to the qualified easily water-soluble surfactant, and stir, the mass ratio of surfactant, compound surfactant, synergist is 7:2 :1;

[0025] S5, adding NaOH sol...

Embodiment 2

[0027] An environment-friendly lubricating fluid for metal pipe string construction in an oil and gas field, the processing steps of which are as follows:

[0028] S1, extract 1000kg oil raw material from rapeseed, measure initial iodine value, put into reaction kettle;

[0029] S2. Add 300 kg of 35% hydrogen peroxide and 500 kg of oxalic acid solution into the reaction kettle containing 1000 kg of oil raw material in step S1, and stir, gradually warming up to 70° C., and continue stirring for 8 hours;

[0030] S3, the iodine value or the HLB value in the reaction kettle in the detection step S2, if the iodine value is 85% of the initial iodine value in the raw material or the HLB value is 9.0 at this time, then form a qualified water-soluble surfactant;

[0031] S4, add compound surfactant and synergist successively to the qualified easily water-soluble surfactant, and stir, the mass ratio of surfactant, compound surfactant, synergist is 7:2 :1;

[0032] S5, adding NaOH sol...

Embodiment 3

[0034] An environment-friendly lubricating fluid for metal pipe string construction in an oil and gas field, the processing steps of which are as follows:

[0035] S1, extract 1000kg oil raw material from rapeseed, measure initial iodine value, put into reaction kettle;

[0036] S2. Add 500 kg of 40% hydrogen peroxide and 1000 kg of oxalic acid solution into the reaction kettle containing 1000 kg of oil raw material in step S1, and stir, gradually warming up to 90° C., and continue stirring for 9 hours;

[0037] S3, the iodine value or the HLB value in the reaction kettle in the detection step S2, if the iodine value is 90% of the initial iodine value in the raw material or the HLB value is 9.2 at this time, then a qualified water-soluble surfactant is formed;

[0038] S4, add compound surfactant and synergist successively to the qualified easily water-soluble surfactant, and stir, the mass ratio of surfactant, compound surfactant, synergist is 7:2 :1;

[0039] S5, adding Na...

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Abstract

The invention relates to an environment-friendly lubricant for oil gas field metallic tube column construction. A processing process of the environment-friendly lubricant comprises the following steps: S1, preparing, namely extracting oil from natural plant seeds, so as to obtain a raw material, and measuring an initial iodine value; S2, carrying out acid oxidation, namely putting a weak acid andan oxidant into the raw material of the step S1 at a normal temperature, gradually heating to 50-90 DEG C, and continuously stirring for 7-9 hours; S3, carrying out detection, namely measuring an iodine value and an HLB value in the 7-9 hours of the stirring process, and if the iodine value accounts for 80-90% of the initial iodine value or the measured HLB value is 8.8-9.2, carrying out a step S4; S4, adding additives which comprise a compounded surfactant and a synergist, namely putting the compounded surfactant into the easily dissolved surfactant in the step S3, stirring and mixing uniformly, further adding the synergist, and stirring and mixing uniformly; S5, adjusting a pH value, namely putting an alkali solution into the product of the step S4, adjusting the pH value to 6-8, and further continuously stirring for 1-2 hours, thereby finally obtaining an environment-friendly lubricant product. The environment-friendly lubricant has the beneficial effects of being good in dispersibility, small in friction coefficient and good in lubrication effect.

Description

technical field [0001] The invention relates to the field of lubricants, in particular to an environment-friendly lubricating fluid for the construction of metal pipe strings in oil and gas fields. Background technique [0002] Lubricant is a substance used between two relatively moving objects to reduce friction and wear caused by contact. Lubricants are widely used in various fields. According to the physical state of lubricants, they can be divided into the following four categories: solid lubricants, gas lubricants, liquid lubricants, and semi-solid lubricants. Liquid lubricants are widely used in oil and gas fields, especially lubricants for drilling fluids used in drilling engineering in the oil and gas industry. At present, many studies have begun to modify the oil, increase the adsorption base, and form a strong adsorption film, thereby increasing its lubrication, pressure resistance and stability, and meeting the needs of extended-reach drilling. However, these lu...

Claims

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Application Information

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IPC IPC(8): C10M169/04C09K8/00C10N30/04C10N30/06C10N30/12
CPCC09K8/00C09K2208/34C10M169/04C10M2207/243C10M2207/401C10N2030/04C10N2030/06C10N2030/12C10N2030/64
Inventor 扬洲徐东
Owner 成都创巨油气工程技术有限公司