Drilling fluid lubricant with excellent friction reducing performance

A lubricant and drilling fluid technology, applied in the field of drilling fluid lubricants and their preparation, can solve the problems of insufficient synthetic lubricants and lack of synthetic lubricants, and achieve the effect of excellent anti-wear performance

Active Publication Date: 2016-06-29
BEIJING XINXIANGYUAN CHANGSHUN LUBRICATING OIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the relatively weak lubricants in China are mainly anti-friction additives, which are difficult to compare with foreign countries in terms of variety and performance; in addition, there are not many synthetic lubricants widely accepted by users, and the main domestic anti-friction additives are mainly containing Additives of active elements such as sulfur and phosphorus or modified graphite solid additives still lack efficient synthetic lubricants like TorqTrim (fatty acid triglycerides). issues that need resolving

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: In a heated and stirred reactor, first add 40.0 kg of biodiesel and 10.0 kg of mineral oil, stir evenly, heat to 50-70°C, then add 24.0 kg of Span-80 sorbitan oleate , triethylamine dodecylbenzenesulfonate ABSN24.0 kg, stir for 0.5-1 hour, then add 1.5 kg of anti-wear additive, after fully stirring, finally add 0.5 kg of defoamer, continue stirring for 0.5-1 hour, Obtain light yellow viscous liquid, promptly obtain the drilling fluid lubricant provided by the present invention.

Embodiment 2

[0019] Example 2: In a heated and stirred reactor, first add 40.0 kg of biodiesel and 10.0 kg of mineral oil, stir evenly, heat to 50-70°C, then add 20.0 kg of Span-80 sorbitan oleate , 27.0 kg of triethylamine dodecylbenzenesulfonate ABSN, stirred for 0.5-1 hour, then added 2.5 kg of anti-wear additive, after stirring evenly, finally added 0.5 kg of defoamer, and continued to stir for 0.5-1 hour to obtain The light yellow viscous liquid is the drilling fluid lubricant provided by the present invention.

Embodiment 3

[0020] Example 3: In a heated and stirred reactor, first add 40.0 kg of biodiesel and 10.0 kg of mineral oil, stir evenly, heat to 50-70°C, then add 25.0 kg of Span-80 sorbitan oleate , triethylamine dodecylbenzenesulfonate ABSN23.0 kg, stirred for 0.5-1 hour, then added 1.0 kg of anti-wear additive, after stirring evenly, finally added 1.0 kg of defoamer, and continued to stir for 0.5-1 hour to obtain The light yellow viscous liquid is the drilling fluid lubricant provided by the present invention.

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PUM

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Abstract

The invention belongs to the field of oilfield chemistry, and relates to a kind of biodiesel oil and a small amount of mineral oil as base oil, which is blended with suitable surfactants, anti-friction and anti-wear additives, anti-foaming agents and other additives, and has excellent anti-wear performance. Drilling fluid lubricant and preparation method thereof. The mass percentage of each component of the lubricant provided by the invention is: biodiesel (30-50%), mineral oil (10-20%), Span-80 sorbitan oleate (10-30%) , triethylamine dodecylbenzenesulfonate ABSN (10-30%), anti-friction and anti-wear additives (1-5%), defoamer (0.5-1%). The drilling fluid lubricant provided by the invention has excellent anti-friction performance, and the reduction rate of the lubrication coefficient reaches about 85.0%.

Description

technical field [0001] The invention relates to a drilling fluid lubricant with excellent anti-wear performance, which is prepared by blending biodiesel and a small amount of mineral oil as base oil, adding suitable surfactants, anti-wear and anti-friction additives, anti-foaming agents and other additives and its preparation method. Background technique [0002] In oil drilling and completion operations, various frictions are unavoidable when the drill bit is drilling, resulting in equipment wear. The main function of the drilling fluid lubricant is to reduce the friction of the mud cake, reduce sticking sticking and torque transmission loss. Improving the lubrication performance of drilling fluid can reduce hydraulic friction, mud cake viscosity coefficient, drill string torque, axial resistance, energy consumption, shorten tripping time, reduce working resistance of drill bit, and prolong drill bit life, thereby improving drilling performance. Technical and economic ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035
Inventor 刘长斌
Owner BEIJING XINXIANGYUAN CHANGSHUN LUBRICATING OIL CO LTD
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