A high-temperature-resistant high-efficiency environment-friendly full ester-based drilling lubricant and preparation method thereof

A technology of high temperature resistance and lubricant, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of reduced torque of soil moving slurry, non-degradation, pollution of the ocean, etc., to shorten the tripping time and improve the work. Efficiency, the effect of reducing hydraulic friction

Active Publication Date: 2017-05-03
纳米克斯(辽宁)能源有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. A large amount of mineral oil is used, which cannot be degraded and pollutes the ocean
[0007] 2. The lubricating effect is not good, and the torque reduction rate of soil moving slurry is only 65%.
[0008] 3. The temperature resistance is not good, the high temperature is only 120 ℃.
[0009] 4. The extreme pressure performance is poor, the diameter of the wear spot is as high as 0.7mm and the maximum non-jamming value is only 392N.
[0010] 5. Poor compatibility with PEM and PEC systems, selective

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The high-temperature-resistant high-efficiency and environment-friendly all-ester-based drilling lubricant prepared by the above-mentioned preparation method.

[0039] The drilling lubricant of the present invention has good lubricating performance, and the torque reduction rate of mud-moving slurry in fresh water reaches more than 90%, and the torque reduction rate of mud-moving slurry in seawater reaches more than 80%; the viscosity index is greater than 180, and the biodegradation rate is as high as more than 90%. The temperature resistance can reach above 200°C.

[0040] Below in conjunction with specific embodiment the present invention is described in further detail:

Embodiment 1

[0042] 1. Synthesis of Trimethylolpropane Sebacic Acid Modified Polyurethane

[0043] Put 100 grams of polypropylene oxide, 60 grams of trimethylol propane diacid and 20 grams of isophorone diisocyanate in a container, react for 3 hours under the conditions of temperature 90°C and negative pressure 180 mmHg, and add trihydroxy 50 grams of methylpropionic acid, 30 grams of chain extender diethylene glycol and 10 grams of catalyst stannous octoate, under the condition of adjusting the negative pressure of 50 mmHg, the temperature was continued for 6 hours at 110 ° C to obtain trimethylol propane decanedic acid modified polyurethane ;

[0044] 2. Synthesis of trimethylolpropane mixed esters

[0045] 100 grams of the prepared trimethylolpropane sebacic acid modified polyurethane was mixed with 20 grams of ricinoleic acid, 12 grams of diethanolamine and 6 grams of boric acid, and the negative pressure was 230 mmHg, and nitrogen was circulated continuously, and at a temperature of ...

Embodiment 2

[0056] 1. Synthesis of Trimethylolpropane Sebacic Acid Modified Polyurethane

[0057] Put 120 grams of polypropylene oxide, 70 grams of trimethylolpropane diacid and 24 grams of isophorone diisocyanate in a container, react for 4 hours under the conditions of temperature 80 ° C and negative pressure 160 mmHg, and add trihydroxy 60 grams of methylpropionic acid, 35 grams of chain extender diethylene glycol and 12 grams of catalyst stannous octoate, under the condition of adjusting the negative pressure of 40mmHg, the temperature continued to react for 5 hours at 110°C to obtain trimethylolpropane sebacic acid modified polyurethane ;

[0058] 2. Synthesis of trimethylolpropane mixed esters

[0059] Mix 200 grams of the prepared trimethylolpropane sebacic acid-modified polyurethane with 45 grams of ricinoleic acid, 25 grams of diethanolamine and 12 grams of boric acid, and nitrogen gas is fed into the negative pressure 240mHg high uninterrupted circulation, at a temperature of 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
viscosity indexaaaaaaaaaa
Login to view more

Abstract

The invention discloses a high-temperature-resistant, efficient and environmentally-friendly full-ester-based drilling lubricant and a preparation method thereof. Polypropylene oxide, trimethylolpropane sebacate and isophorone diisocyanate methyl oleate react with trihydroxymethylpropionate, diglycol and stannous octoate to generate trimethylolpropane sebacate modified polyurethane, the trimethylolpropane sebacate modified polyurethane is mixed with ricinoleic acid, diethanol amine and boric acid, nitrogen is introduced by using a two-step decompression method in a continuous circulation way to generate trimethylolpropane mixed ester, and the trimethylolpropane mixed ester finally reacts with boronized amino ester to prepare the high-temperature-resistant, efficient and environmentally-friendly full-ester-based drilling lubricant. The novel high-temperature-resistant, efficient and environmentally-friendly full-ester-based drilling lubricant is prepared by introducing the nitrogen through a three-step reaction in the continuous circulation way and the two-step decompression method. The hydraulic friction, the viscosity coefficient of a mud cake, the torque of a drill column and the axial resistance can be greatly reduced by the lubricant, and the energy consumption is reduced; the trip time can be better shortened, the working resistance of a drill bit is reduced, and the service life of the drill bit is prolonged, so that the excellent properties such as the drilling working efficiency are improved.

Description

technical field [0001] The invention relates to a drilling lubricant and a preparation method thereof, in particular to a high-temperature-resistant, high-efficiency, environmentally friendly all-ester-based drilling lubricant and a preparation method thereof, which can be used for drilling under complex well conditions such as deep wells, horizontal wells, and high-inclination directional wells. Use, suitable for drilling fluid lubricants in fresh water, salt water, and sea water. Background technique [0002] As the world's demand for petroleum energy continues to increase, the amount of petroleum extracted is increasing, and the demand for drilling lubricants is also growing rapidly. The current lubricants still use refractory and polluting mineral oil as the basic raw material. This will inevitably be limited by increasingly stringent environmental protection requirements. [0003] Environmentally friendly drilling fluid lubricants mainly include vegetable oils, polyeth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/83C08G18/67C08G18/66C08G18/48C08G18/32C09K8/035
CPCC08G18/12C08G18/671C08G18/833C08G18/838C09K8/035C09K2208/34C08G18/48C08G18/6692C08G18/3206C08G18/348
Inventor 王严绪
Owner 纳米克斯(辽宁)能源有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap