Environment-friendly high-temperature-resistant and high-salt-resistant lubricant for water-based drilling fluid as well as preparation method and application thereof
A water-based drilling fluid and environment-friendly technology, applied in the field of drilling, can solve the problems of reducing the lubrication coefficient of the drilling fluid, large supporting pressure of frictional resistance, etc., and achieve the effect of reducing the friction coefficient, ensuring stability, and strong high temperature stability.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] A preparation method of an environment-friendly high-temperature and high-salt-resistant lubricant for water-based drilling fluid, comprising the following steps:
[0028] (1) add a certain amount of sorbitol in the four-necked flask equipped with reflux condenser, agitator, start stirring, add boric acid after being warming up to 150 ℃, the mol ratio of sorbitol and boric acid is 1:1; Nitrogen was introduced, and the reaction was incubated at 150 °C for 2 h to obtain an intermediate product.
[0029] (2) under 150 ℃, directly in step (1) gained intermediate product, add lauric acid and sodium hydroxide (the added quality of sodium hydroxide is 0.3% of lauric acid quality), the mol ratio of lauric acid and boric acid is 1 : 1; raise the temperature to 190°C, react for 2 hours, and naturally cool to room temperature to obtain an environmentally friendly high-temperature and high-salt-resistant lubricant for water-based drilling fluid, denoted as Lubricant A 1 .
Embodiment 2
[0031] A preparation method of an environment-friendly high-temperature and high-salt-resistant lubricant for water-based drilling fluid, comprising the following steps:
[0032] (1) add a certain amount of xylitol in the four-necked flask equipped with reflux condenser and agitator, start stirring, add boric acid after being warming up to 160 ° C, the mol ratio of xylitol and boric acid is 2:1; Nitrogen was introduced, and the reaction was incubated at 160 °C for 3 h to obtain an intermediate product.
[0033] (2) under 160 ℃, directly in step (1) gained intermediate product, add stearic acid and sodium hydroxide (the added quality of sodium hydroxide is 0.4% of stearic acid quality), the mole of stearic acid and boric acid The ratio is 2:1; the temperature is raised to 200°C, the reaction is carried out for 3 hours, and then cooled to room temperature naturally to obtain an environmentally friendly high-temperature and high-salt-resistant lubricant for water-based drilling f...
Embodiment 3
[0035] A preparation method of an environment-friendly high-temperature and high-salt-resistant lubricant for water-based drilling fluid, comprising the following steps:
[0036] (1) add a certain amount of pentaerythritol in the four-necked flask equipped with reflux condenser, agitator, start stirring, add boric acid after being warming up to 170 ℃, the mol ratio of pentaerythritol and boric acid is 3:1; The reaction was incubated at 170 °C for 4 h to obtain an intermediate product.
[0037] (2) at 170 DEG C, directly add oleic acid and catalyst sodium hydroxide (the addition of sodium hydroxide is 0.5% of the quality of oleic acid) in the intermediate product obtained in step (1), and the mol ratio of oleic acid and boric acid is 3:1; raise the temperature to 210°C, react for 4 hours, and naturally cool to room temperature to obtain an environmentally friendly high-temperature and high-salt-resistant lubricant for water-based drilling fluid, denoted as Lubricant A 3 .
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com