METHOD OF ENHANCING CIRCULATION DURING DRILL-OUT OF A WELLBORE BARRIER USING DISSOLVABLE SOLID PARTICULATES

• Main Authors: GUPTA, D. V. SATYANARAYANA, PIROGOV, ALEXANDER, NELSON, SCOTT G, BRANNON, HAROLD DEAN, LEMONS, JIMIE DEVON, TATUM, BENJAMIN, JENSEN, ANNA
• Format: Patent
• Language: English; French
• Published: 04.12.2018
• 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 fluid-impermeable barrier, used to isolate stimulated intervals in a reservoir during a multi-zone fracturing operation, may be removed from the wellbore which penetrates the reservoir using a circulating fluid containing dissolvable solid particulates. The dissolvable solid particulates bridge perforation clusters during clean- out of the wellbore and thus inhibit passage of the circulating fluid into the fracture network through the perforation clusters. Une barrière imperméable aux fluides utilisée pour isoler des intervalles stimulés dans un réservoir durant une opération de fracturation de multiples zones, peut être retirée du puits de forage qui pénètre le réservoir à laide dun fluide de circulation contenant des particules solides pouvant se dissoudre. Ces dernières comblent des groupes de perforation durant le nettoyage du puits de forage et empêchent ainsi le passage du fluide de circulation dans le réseau de fractures à travers les groupes de perforation.