METHODS FOR SERVICING SUBTERRANEAN WELLS

• Main Author: MEDVEDEV ANATOLY VLADIMIROVICH
• Format: Patent
• Language: English
• Published: 24.09.2015
• Subjects: 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

Lost circulation in a subterranean well may be controlled by placing into the lost-circulation zone a first fluid comprising a swellable material, followed by a second fluid comprising a plugging material. The swellable material may be oil-swellable, water-swellable or both. The plugging materials m...