Caged ball fractionation plug

摘要

A caged ball fractionation plug for use in a wellbore with a crown engagement having a tapered nose cone and various load ring, slips, slip backups, lubricating spacers and seals can all be slidably engaged to the mandrel. Upon applying pressure, the slidably engaged components can be compressed against each other and the plug can expand and bite into the casing of the wellbore. The caged ball portion of the plug seats the ball internal to the plug to create two separate fractionation zones in the wellbore.

主权项

1. A caged ball fractionation plug for use in a wellbore comprising:
a mandrel having a proximal end and a distal end, the proximal end defining a crown engagement having a plurality of radially spaced groves, the mandrel comprising a first setting mechanism receiving portion between the proximal and distal ends of the mandrel, the first setting mechanism receiving portion comprising a seal; a tapered nose cone having a proximal end and a distal end, the proximal end of the nose cone configured to be removably connected with the distal end of the mandrel, and the distal end of the tapered nose cone comprising a first sloped face and a second sloped face axially symmetrical to one another, the first and second sloped faces converging to define a tip of the distal end of the nose cone, wherein at least a portion of the tip of the nose cone has a shape complementary to a shape of each of the radially spaced grooves; and a caged ball setting mechanism threaded into the first setting mechanism receiving portion.