Patent ID: 8613330
Filing Date: 2013-12-24
Classification: E21B

Abstract:
1. A coring apparatus, comprising: a coring tool to obtain a sample, the coring tool comprising: a cylindrical body rotatable to obtain the sample and a cavity defined at least in part by an inner surface of the cylindrical body, the inner surface comprising a plurality of raised features to engage and retain the sample, wherein at least one of the raised features or an exterior surface of the sample in the cavity deforms to increase a force required to remove the sample from the cavity, and wherein the cylindrical body comprises a wall extending between a leading edge of the cylindrical body that engages a formation and an opposite end, the wall having a reduced thickness portion to cause the cylindrical body to be fractured in response to a predetermined load, wherein the reduced thickness portion is disposed along the wall between the plurality of raised features and the opposite end.