Patent ID: 9580982
Date: 2017-02-28
CPC Classifications: E21B

Claim:
1. An inner barrel assembly for use with a coring tool, comprising: a sleeve located coaxially within an inner barrel, wherein the sleeve is configured to move in a telescoping manner relative to the inner barrel; a cap located above a top end of the sleeve when the inner barrel assembly is in an initial coring position; and a skirt extending downwardly from the cap toward the sleeve, the skirt being releasably connected to the sleeve by a detachment mechanism selected from the group consisting of a friction element located between the skirt and the sleeve, a frangible portion located between the skirt and sleeve, and a bonding material located between the skirt and the sleeve, the detachment mechanism configured to enable the cap to separate itself from the sleeve responsive to an advancing core sample pressing against the cap.