SURFACE-ACTIVE SUBSTANCE-BASED COMPOSITION FOR STIMULATING OIL AND GAS WELLS AND PROCESS FOR PREPARING THE SAME
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...
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Format: | Patent |
Sprache: | eng ; rum |
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Zusammenfassung: | 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%.
Invenţia se referă la o compoziţie pe bază de substanţe tensioactive, utilizată pentru stimularea sondelor de ţiţei şi gaze, şi la un procedeu de obţinere a acesteia. Compoziţia conform invenţiei este constituită din: a. 40...50% amestec format din 40...66% substanţă tensioactivă anionică, cum ar fi dioctilsulfosuccinat de sodiu sau de potasiu, 4...10% butildiglicol, 4...10% monoetilenglicol şi 30...40% apă; b. 40...50% amestec format din 10...55% substanţe tensioactive neionice, de tipul alcooli graşi C-Cetoxilaţi, cu un grad de etoxilare cuprins între 4 şi 40, 1...10% monetilenglicol sau dietilenglicol, sau un amestec al acestora cu polietilenglicol cu masa moleculară între 200 şi 600; c. 5...10% bloccopolimeri oxid de etilenă-oxid de propilenă cu masa moleculară Mcuprinsă între 1150 şi 1300; d. 2...7% alcool izopropilic şi până la 100% apă. |
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