主权项 |
1. A frac plug configured to seal a bore of a pipe of a downhole well, the frac plug comprising:
a generally cylindrical plug member comprising a glass body, the plug member having axial opposite ends and a length extending between the axial ends, the plug member having an outer diameter surface extending along the length, the outer diameter surface being tapered; and a seal of compressible material extending substantially around the plug member outer diameter, the seal having opposite axial ends generally corresponding to the axial ends of the plug member, the seal being movable axially relative to the plug member outer diameter surface, the seal being compressible against the plug member outer diameter surface and expandable radially outward to engage the bore of the pipe. |