A kind of preparation method of polymer weak gel deep profile control agent
A deep profile control and polymer technology, which is applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of short gelation time, narrow range of temperature and salt resistance, and severe chemical reagents, and achieve solid The effect of low content ratio, reduced production cost, and excellent water solubility
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0032] Prepare 2.50 g of sodium carboxymethylcellulose (CMC) with a viscosity of 800-1200 mPa·s into a 1% solution with distilled water and stir evenly, then add 10.00 g of acrylamide and 0.0075 g of N,N'-methylene Base bisacrylamide, pass nitrogen into the system, add Na in turn 2 SO 3 0.0566g, (NH 4 ) 2 S 2 o 8 0.1065g, stir well and react in a constant temperature water bath at 40°C for 8 hours to form a gel.
[0033] Precipitate and separate the prepared polymer weak gel with ethanol solvent, dry to obtain a crude cross-linked polymer, extract the crude cross-linked polymer with acetone in a Soxhlet extractor for 10 hours to remove the homopolymer, and dry it in a vacuum to obtain Pure cross-linked polymer. Take the dried raw material of sodium carboxymethyl cellulose and purified polymer weak gel 2~3mg and 200~300mg of dry KBr powder, mix them in an agate mortar, and grind them thoroughly until the particle diameter is less than 2μm. Scoop 70-90mg into the tabletin...
Embodiment 2
[0039] Prepare 2.50 g of sodium carboxymethylcellulose (CMC) with a viscosity of 800-1200 mPa·s into a 1% solution with distilled water and stir evenly, then add 10.00 g of acrylamide and 0.0063 g of N,N'-methylene Base bisacrylamide, pass nitrogen into the system, add Na in turn 2 SO 3 0.0666g, (NH 4 ) 2 S 2 o 8 0.1209g, stirred evenly and reacted in a constant temperature water bath at 30°C for 8 hours to form a gel.
[0040] The viscosity of the gel measured by NDJ-8S viscometer is 10520mPa·s, and the temperature and salt resistance properties are shown in the attached image 3 And attached Figure 5 shown.
Embodiment 3
[0042] Prepare 2.50 g of sodium carboxymethylcellulose (CMC) with a viscosity of 800-1200 mPa·s into a 2% solution with distilled water and stir evenly, then add 12.50 g of acrylamide and 0.0075 g of N,N'-methylene Base bisacrylamide, pass nitrogen into the system, add Na in turn 2 SO 3 0.0694g, (NH 4 ) 2 S 2 o 8 0.1255g, stir well and react in a constant temperature water bath at 40°C for 8 hours to form a gel.
[0043] The viscosity of the gel measured by NDJ-8S viscometer is 13280mPa·s, and the temperature and salt resistance properties are as follows: image 3 And attached Figure 5 shown.
PUM
Property | Measurement | Unit |
---|---|---|
viscosity | aaaaa | aaaaa |
viscosity | aaaaa | aaaaa |
viscosity | 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