COMPOSITION AND METHOD FOR RECOVERING HYDROCARBON FLUIDS FROM A SUBTERRANEAN RESERVOIR

• Main Authors: KURIAN PIOUS, WEI MINGLI, CHANG KIN-TAI
• Format: Patent
• Language: Chinese; English
• Published: 14.12.2016
• 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 composition comprising crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation is disclosed and claimed. This invention further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO2 or CO2 Water Alternating Gas flooding at low pH and increases the mobilization and/or recovery rate of hydrocarbon fluids present in the subterranean formations. 本发明提供从地下储层开采烃流体的组合物和方法。公开和要求保护包含能够在等于或低于中性pH值下水解的交联的可膨胀聚合物微粒的组合物和通过将此种组合物导入地下地层中而改进地下地层透水性的方法。本发明进步涉及从在低pH值下经历CO或CO水-气交替驱油的地下储层或地层开采烃流体的组合物和方法并且提高所述地下地层中存在的烃流体的流通和/或开采率。