Clay swelling shrinkage agent for oil field and preparation method of clay swelling shrinkage agent
A shrink-swell, oilfield technology, applied in chemical instruments and methods, preparation of amino-substituted functional groups, organic chemistry, etc., can solve the problem that balanced formation pressure water injection fails to meet the distribution requirements, low shrink-swell capacity, and small molecular amines are highly volatile. and other problems, to achieve the recovery and expansion of the oil production throat, the improvement of the fluid scouring capacity, and the good effect of comprehensive synergy.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment
[0027] The mass fractions of polyethylene polyamine, benzyl chloride, sodium hydroxide, n-butanol, and organometallic catalyst (XOR) in the clay expansion agent for oilfields in this example are 51.70%, 25.00%, 8.00%, and 15.00% respectively % and 0.30%.
[0028] The organometallic catalyst (XOR) is potassium tert-butoxide, from Shanghai Demao Chemical Co., Ltd., CAS865-47-4.
[0029] The following steps are used to prepare the product: the product is completed at a certain temperature under normal pressure and in a closed reaction under the catalytic condition of a special catalyst.
[0030] (1) Add polyethylene polyamine, and add quantitative sodium hydroxide, solvent n-butanol, catalyst and rigid material benzyl chloride successively under constant temperature and stirring conditions when the temperature is raised to 50-80°C;
[0031] (2) After the addition, the temperature was raised to 90-120°C for 5 hours, and the pH was intermittently detected;
[0032] (3) During the...
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