DIVERTING AGENT AND METHOD FOR BLOCKING FRACTURES IN WELL USING SAME

An object of the present invention is to provide a diverting agent which has performance to release filling due to biodegradability, can be quickly removed after a certain period of time, and has an excellent filling property with respect to a fracture in a well. The diverting agent according to the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KANAMORI, Yuya, HIRANO, Yasuhiro, FURO, Chizuko
Format:	Patent
Sprache:	eng ; fre ; ger
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:	An object of the present invention is to provide a diverting agent which has performance to release filling due to biodegradability, can be quickly removed after a certain period of time, and has an excellent filling property with respect to a fracture in a well. The diverting agent according to the present invention contains particles having a particle diameter of 1,700 µm or more in an amount of 10 to 70 mass%, particles having a particle diameter of 500 µm or more and less than 1,700 µm in an amount of 20 to 80 mass%, and particles having a particle diameter of less than 250 µm in an amount of 5 to 40 mass%, and the diverting agent contains a biodegradable resin in an amount of 10 mass% or more.