Multi-core microsphere selective water plugging agent and preparation method thereof
A water blocking agent and selective technology, applied in the field of multi-core microsphere selective water blocking agent and its preparation, can solve the problems of poor plugging effect in high permeability formations, and achieve good plugging ability and low viscosity effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0020] In a 500 ml reaction flask, replace the air with nitrogen, then add 60 grams of L-lactide, 40 grams of aspartic acid, 30 grams of 2-ethyl-2-oxazoline, and 70 grams of dimethyl carbonate into the reaction flask and heat up to 120°C, start the stirrer, then add 0.08 g of stannous valerate catalyst and 0.5 g of potassium hydroxide, and gradually raise the temperature of the reaction liquid system to 150°C for constant temperature reaction for 8 hours, and cool the obtained product after the reaction is completed After cooling, a solid phase product is obtained, and the product is crushed by a pulverizer to obtain a powder with a particle size of 100-200 mesh, which is the water blocking agent.
[0021] The water shutoff agent synthesized by the method is suitable for water shutoff construction of oil and gas wells below 90°C.
Embodiment 2
[0023] In a 500ml reaction flask, replace the air with nitrogen, then add 80 grams of L-lactide, 50 grams of aspartic acid, 40 grams of 2-ethyl-2-oxazoline, and 30 grams of dimethyl carbonate into the reaction flask and heat up to 120°C, start the stirrer, then add 0.1 g of stannous valerate catalyst and 0.6 g of potassium hydroxide, and gradually raise the temperature of the reaction liquid system to 150°C for constant temperature reaction for 8 hours, and cool the obtained product after the reaction is completed. After cooling, a solid phase product is obtained, and the product is crushed by a pulverizer to obtain a powder with a particle size of 100-200 mesh, which is the water blocking agent.
[0024] The water shutoff agent synthesized by the method is suitable for water shutoff construction of oil and gas wells at 90-150°C.
Embodiment 3
[0026] In a 500ml reaction flask, replace the air with nitrogen, then add 80 grams of L-lactide, 50 grams of aspartic acid, 40 grams of 2-ethyl-2-oxazoline, and 30 grams of dimethyl carbonate into the reaction flask and heat up to 130°C, start the stirrer, then add 0.1 gram of stannous valerate catalyst and 0.6 gram of potassium hydroxide, and gradually heat up the reaction liquid system to 140°C for constant temperature reaction for 10 hours, and cool the obtained product after the reaction is completed. After cooling, a solid phase product is obtained, and the product is crushed by a pulverizer to obtain particles with a particle size of 1-8 mm, which is the water blocking agent.
[0027] The water shutoff agent synthesized by the method is suitable for water shutoff construction of oil and gas wells at 90-150°C.
PUM
Property | Measurement | Unit |
---|---|---|
particle size (mesh) | aaaaa | aaaaa |
particle diameter | aaaaa | aaaaa |
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