Composition for fracturing fluid resistance reducing agent
A technology of composition and drag reducing agent, applied in the directions of drilling composition, chemical instrument and method, etc., can solve the problems of narrow temperature range of drag reducing agent and so on
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0040] Add 0.5 mol hexadecane bromide, 0.75 mol N-methyldiethanolamine, and 300 g of absolute ethanol to a 2000 ml reaction flask equipped with a sealed mechanical stirrer, a thermometer, a straight condenser tube, and a receiving bottle. 100 o C, the reaction was refluxed for 16h. The obtained product was cooled down and recrystallized in absolute ethanol to obtain a white solid, which was confirmed as the target product N-methyl-N,N-bis(2-hydroxyethyl)-1-hexadecylammonium bromide by mass spectrometry[ MS-ESI (m / z): theoretical, 424; actual, 344 (M - Br)]. N,N-Dimethyl-N-(2-hydroxyethyl)-1-hexadecylammonium bromide and sodium salicylate are mixed in equal mass ratio. Dissolved in water to make 2000ppmw drag reducing agent aqueous solution, at 2 o Under C environment, keep 7 days without precipitation, clear and transparent. Test the drag reduction rate at different temperatures, the highest drag reduction rate can be maintained at 73%. figure 1 for 20 o The drag reduc...
Embodiment 2
[0042] Add 0.5 mol hexadecane bromide, 0.75 mol N-methyldiethanolamine, and 300 g of absolute ethanol to a 2000 ml reaction flask equipped with a sealed mechanical stirrer, a thermometer, a straight condenser tube, and a receiving bottle. 100 o C, the reaction was refluxed for 16h. The obtained product was cooled down and recrystallized in absolute ethanol to obtain a white solid, which was confirmed as the target product N-methyl-N,N-bis(2-hydroxyethyl)-1-hexadecylammonium bromide by mass spectrometry[ MS-ESI (m / z): theoretical, 424; actual, 344 (M - Br)]. Prepared cationic surfactant and sodium salicylate are dissolved in water to obtain the drag-reducing agent aqueous solution of 2000ppmw, at 2 o Under C environment, keep 7 days without precipitation, clear and transparent. Test the drag reduction rate at different temperatures, the highest drag reduction rate can be maintained at 70%. The applicable temperature range is 2~ 60 o c.
Embodiment 3
[0044] Add 0.5 mol hexadecane bromide, 0.75 mol triethanolamine, and 300 g of absolute ethanol to a 2000 ml reaction bottle equipped with a sealed mechanical stirrer, a thermometer, a straight condenser tube, and a receiving bottle, and the temperature of the oil bath is 100 o C, the reaction was refluxed for 16h. The obtained product was cooled down and recrystallized in absolute ethanol to obtain a white solid, which was confirmed as the target product N,N,N-tris(2-hydroxyethyl)-1-hexadecylammonium bromide [MS-ESI (m / z): theoretical value, 454; actual value, 374 (M - Br)]. Prepared cationic surfactant and sodium salicylate are dissolved in water to obtain the drag-reducing agent aqueous solution of 2000ppmw, at 2 o Under C environment, keep 7 days without precipitation, clear and transparent. Test the drag reduction rate at different temperatures, the highest drag reduction rate can be maintained at 70%. The applicable temperature range is 2~ 55 o c.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More