Patent ID: 8752652

Claim:
An apparatus for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation, the apparatus comprising: a coring bit assembly comprising: a coring shaft; a thrust ring coupled to an end of the coring shaft; and a static sleeve disposed inside the coring shaft and having a flange coupled to the thrust ring to space the static sleeve from the coring shaft to form a drilling fluid passageway between the coring shaft and the static sleeve; a first motor operatively coupled to the coring bit assembly via a gear box to rotationally drive the coring bit assembly; a second motor to drive the coring bit assembly into the formation while the coring bit assembly is rotated by the first motor; and an axial fluid pump disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway.