| 摘要 |
<p>The invention relates to a surface-active substance-based composition for the stimulation of oil and gas wells and to a process for preparing the same. According to the invention, the composition comprises: a. 40...50% mixture of 40...66% anionic surface-active substance, such as sodium or potassium dioctyl-sulpho-succinate, 4...10% butyl-di-glycol, 4...10% mono-ethylene glycol and 30...40% water; b. 40...50% mixture of 10...55% non-ionic surface-active substance, such as C-Cfatty acids ethoxylated with an ethoxylation degree ranging between 4...40, 1...10% mono- or di-ethylene glycol, or a mixture thereof with polyethylene glycol having a molecular mass in the range of 200...600; c. 5...10% ethylene oxide - propylene oxide block copolymers with a molecular mass Mranging between 1150...1300; d. 2...7% isopropyl alcohol and water for the remainder to 100%.</p> |
