Abstract: A coring bit assembly for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation. The coring bit assembly includes a coring shaft and a thrust ring coupled to an end of the coring shaft. A static sleeve is 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. An axial fluid pump is disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway formation.

Abstract: A coring bit assembly for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation. The coring bit assembly includes a coring shaft and a thrust ring coupled to an end of the coring shaft. A static sleeve is 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. An axial fluid pump is disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway formation.

Abstract: A coring bit assembly for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation. The coring bit assembly includes a coring shaft and a thrust ring coupled to an end of the coring shaft. A static sleeve is 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. An axial fluid pump is disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway formation.

Abstract: A coring bit assembly for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation. The coring bit assembly includes a coring shaft and a thrust ring coupled to an end of the coring shaft. A static sleeve is 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. An axial fluid pump is disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway formation.

Abstract: A coring apparatus that includes a housing that is selectively pivotable in a downhole tool, a rotatable coring bit, a gear drive rotatively coupled to the housing, and a key member configured to engage an inner surface of the gear drive and an outer surface of the coring bit and configured to maintain a rotational relationship between the coring bit and the gear drive. A pinion is rotatively coupled to the housing and configured to engage an outer surface of the gear drive, and a motor is affixed to the housing and operatively coupled to the pinion. The gear drive, the key member, the pinion and the motor are configured to pivot in unison with the housing.

Abstract: An apparatus for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation, the apparatus comprising a coring bit assembly, a first motor operatively coupled to the coring bit assembly via a gear box to rotationally drive the coring bit assembly, and a second motor to drive the coring bit assembly into the formation while the coring bit assembly is rotated by the first motor, wherein the coring bit assembly comprises a feature to permit the coring bit assembly to be broken when the coring bit assembly becomes stuck in the formation.

Abstract: Example coring apparatus and methods to use the same are disclosed. A disclosed example apparatus includes a housing that is selectively pivotable in a downhole tool, a rotatable coring bit, a gear drive rotatively coupled to the housing, a key member configured to engage an inner surface of the gear drive and an outer surface of the coring bit and configured to maintain a rotational relationship between the coring bit and the gear drive, a pinion rotatively coupled to the housing, the pinion configured to engage an outer surface of the gear drive, and a motor affixed to the housing and operatively coupled to the pinion, wherein the gear drive, the key member, the pinion and the motor are configured to pivot in unison with the housing.

Abstract: In some embodiments, the invention relates to a sidewall coring tool that includes a tool body, a hollow coring shaft extendable from the tool body, and a formation cutter disposed at a distal end of the hollow coring shaft. The coring tool includes a retention member segmented into a plurality of petals and disposed proximate a distal end of the internal shaft. An internal sleeve may be disposed inside the hollow coring shaft.