METHOD OF USING MULTI-COMPONENT FIBERS AS LOST-CIRCULATION MATERIAL

• Main Authors: CRANDALL, MICHAEL, D, WU, YONG, K, RUTKOWSKI, KEITH, A, MATA, CLARA, E, KADOMA, IGNATIUS, A
• Format: Patent
• Language: English; French
• Published: 31.10.2013
• 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

A method of forming a subterranean well and a method of reducing lost circulation in a subterranean well while drilling the subterranean well are disclosed. The methods include using multi-component fibers as lost-circulation materials. The multi-component fibers having external surfaces and include at least a first polymeric composition and a second polymeric composition. At least a portion of the external surfaces of the multi-component fibers includes the first polymeric composition, which at least partially adhesively bonds the mud cake formed during the method. La présente invention concerne un procédé de formation d'un puits souterrain et un procédé de diminution de la perte de circulation dans un puits souterrain pendant le forage du puits souterrain. Les procédés selon l'invention comprennent l'utilisation de fibres à multi-constituants comme substances de perte de circulation. Les fibres à multi-constituants présentent des surfaces externes et comprennent au moins une première composition polymère et une seconde composition polymère. Au moins une partie des surfaces externes des fibres à multi-constituants comprend la première composition polymère, qui se lie au moins en partie de manière adhésive au gâteau de boue formé pendant le procédé.