Device and method for acid exciting of underwell structure layer

Subterranean well formations (12) are acid stimulated using a plurality of jet nozzles (22) located in a spaced relation to the wall of the formation to form an annulus (28) between the nozzles and the formation. An acid-containing, stimulation fluid is pumped under pressure through the nozzles, int...

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Bibliographische Detailangaben
1. Verfasser:	ALIK CHEN,JIM B. SUYAAMACHA,MATHEW J. RISS
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS 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 NOZZLES OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PAINTS PERFORMING OPERATIONS POLISHES SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	Subterranean well formations (12) are acid stimulated using a plurality of jet nozzles (22) located in a spaced relation to the wall of the formation to form an annulus (28) between the nozzles and the formation. An acid-containing, stimulation fluid is pumped under pressure through the nozzles, into the annulus and against the wall of the formation. A gas is pumped into the annulus so that the stimulation fluid mixes with the gas to generate foam before the mixture is jetted towards the formation to impact the wall of the formation.