METHOD USING PARTICULATE CHELATES TO STIMULATE PRODUCTION OF PETROLEUM IN CARBONATE FORMATIONS

A method and composition for stimulating petroleum production from carbonate reservoirs by employing chelating agents, such as EDTA, which are in particulate form rather than aqueous solutions of chelating agents. The use of particulate chelants, which are relatively unstable in acidic solutions, re...

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Bibliographische Detailangaben
1. Verfasser:	THOMAS, RONNIE, L
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMISTRY DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	A method and composition for stimulating petroleum production from carbonate reservoirs by employing chelating agents, such as EDTA, which are in particulate form rather than aqueous solutions of chelating agents. The use of particulate chelants, which are relatively unstable in acidic solutions, results in a stimulation fluid with a very high dissolution capability. L'invention concerne un procédé et une composition qui permettent de stimuler la production de pétrole à partir de réservoirs carbonatés au moyen d'agents de chélations, tels qu'EDTA, qui se présentent sous forme particulaire plutôt que sous forme de solutions aqueuses d'agents de chélation. L'utilisation de ces chélants particulaires qui sont relativement instables dans des solutions acides, débouche sur un fluide de stimulation doté d'une capacité de dissolution extrêmement élevée.