DISINTEGRATING BALL FOR SEALING FRAC PLUG SEAT

摘要

A composition for a ball that has sufficient rigidity to resist deformation and withstand the high pressure differentials, typically up to 10,000 psi, that are required during well stimulation, but disintegrates, dissolves, delaminates or otherwise experiences a significant degradation of its physical properties over time in the presence of hydrocarbons and formation heat. Extraction from the hole or milling the ball is not necessary upon completion of the well fracturing process. The ball may be used in methods and apparatus for hydraulically fracturing a subterranean zone in a wellbore.