IN-SITU DOWNHOLE HEATING FOR A TREATMENT IN A WELL

The invention relates to a method for treating a portion or treatment zone of a well. According to the invention, the method includes the steps of (A) forming a first treatment fluid which comprises a carrier fluid, a first reactant and a second reactant capable of reacting together in an exothermic...

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Hauptverfasser: CHOUDHARY YOGESH KUMAR, OFTEDAL ARVE
Format: Patent
Sprache:eng ; rum
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Beschreibung
Zusammenfassung:The invention relates to a method for treating a portion or treatment zone of a well. According to the invention, the method includes the steps of (A) forming a first treatment fluid which comprises a carrier fluid, a first reactant and a second reactant capable of reacting together in an exothermic chemical reaction, they being in at least sufficient concentrations in the carrier fluid to generate a heat of reaction of at least 500 kJ/liter of treatment fluid, (B) forming a second treatment fluid comprising a second carrier fluid and a chemical treatment substance selected for chemically reacting with a substance or material in the portion or treatment zone of the well and (C) introducing the first treatment fluid and the second treatment fluid in any sequential order into the portion or treatment zone of the well. Invenţia se referă la o metodă de tratare a unei porţiuni sau zone de tratament a unui puţ. Metoda conform invenţiei constă în etapele: (A) de formare a unui prim fluid de tratare, ce cuprinde un fluid purtător, un prim reactant şi un al doilea reactant, capabili să reacţioneze împreună într-o reacţie chimică exotermă, fiind în concentraţii cel puţin suficiente în fluidul purtător, pentru a genera o căldură de reacţie de cel puţin 500 kJ/l fluid de tratare; (B) de formare a unui al doilea fluid de tratare, care cuprinde un al doilea fluid purtător şi o substanţă chimică de tratare, selectată pentru a reacţiona chimic cu o substanţă sau material în porţiunea sau zona de tratament a puţului; (C) de introducere a primului fluid de tratare şi a celui de-al doilea fluid de tratare, în orice ordine secvenţială, în porţiunea sau zona de tratament a puţului.