METHODS FOR WELL TREATMENT

• Main Author: JAMES, SIMON GARETH
• Format: Patent
• Language: English; French
• Published: 04.02.2016
• Subjects: ADHESIVES; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DYES; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; LIME, MAGNESIA; 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; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

Methods for treating and restoring zonal isolation in a subterranean well involve the use of a well treatment tool that may drill one or more holes in casing and inject a treatment fluid that may seal cracks or fissures in the cement sheath behind the casing. Microannuli may also be sealed. The treatment fluids may be solids free or in the form of suspensions containing solids having a particle size between 1 nm and 100 nm. Cette invention concerne des procédés de traitement et de restauration d'isolement zonal dans un puits souterrain impliquant l'utilisation d'un outil de traitement de puits capable de percer un ou plusieurs trous dans le tubage et d'injecter un fluide de traitement capable d'obturer les craquelures ou les fissures dans la gaine en ciment située derrière le tubage. Les micro-espaces annulaires peuvent également être obturés. Les fluides de traitement peuvent être exempts de solides ou peuvent être sous la forme de suspensions contenant des solides ayant une taille de particule entre 1 et 100 nm.