Abstract: The present embodiments disclose a downhole communication technology involving slotted collar allowing electromagnetic waves to reach inserted probe receiver assembly. One embodiment shows transmitter/receiver as part of At Bit tool.

Abstract: The present application pertains in one embodiment to a sensor sub for use in a drillstring having a drill bit on a distal end for drilling a wellbore in a formation. The sensor sub comprises a tool body having a longitudinal axis; a first pocket on the tool body wherein said first pocket extends radially inward from an outer surface of the tool body and a second pocket on the tool body wherein said second pocket extends radially inward from an outer surface of the tool body. The first pocket comprises a first sensor selected from a type consisting of resistivity sensor, a sonic sensor, an ultrasonic sensor; a pressure sensor; an electrical imaging sensor; a gamma sensor; a density sensor; a neutron sensor; an acoustic sensor, an accelerometer, a magnetometer, and a gyroscope.

Abstract: The present application pertains to a universal bottom hole assembly node module. The module may comprise an azimuthal resistivity module, an azimuthal gamma module, a pressure while drilling module, or any combination thereof. A communication system may be configured to provide two way communication between two or more components of a bottom hole assembly, for example, between a rotary steerable system and a measurement while drilling system. This advantageously allows real time geosteering, well control, hydraulics analysis for drilling optimization, and/or evaluation of motor efficiency.

Abstract: A resistivity-measuring sensor disposable within a drillstring includes a sensor body having a longitudinal axis, wherein the sensor body is separable from and disposable in the drillstring at a radially offset distance from the longitudinal axis of the drillstring. The sensor further includes a transmitting antenna disposed along a length of the sensor body, a receiving antenna disposed along a length of the sensor body, and an electronics section contained within the sensor body for generating and receiving signals to and from the transmitting and receiving antennas.

Abstract: The systems and methods provide a universal bottom hole assembly node module. The universal bottom hole assembly node module comprises an azimuthal resistivity module, an azimuthal gamma module, a pressure while drilling module, or any combination thereof. The universal bottom hole assembly node module includes a communication system configured to provide two way communication between a rotary steerable system and a measurement while drilling system.

Abstract: A resistivity measuring tool used in a drillstring having a drill bit on a distal end for drilling a wellbore in a formation includes a tool body having a longitudinal axis, a transmitting antenna, and a receiving antenna. The receiving antenna includes an antenna body having a longer axis disposed longitudinally in the tool body, and a wire coil having a central axis disposed around the antenna body, wherein the wire coil central axis is substantially perpendicular to the longer axis of the antenna body, and wherein the wire coil is configured to generate a magnetic moment orthogonal to the tool body longitudinal axis. The transmitting antenna is configured to transmit electromagnetic energy into the formation and induce a voltage signal related to a parameter of the formation in the receiving antenna.

Abstract: A resistivity-measuring sensor disposable within a drillstring includes a sensor body having a longitudinal axis, wherein the sensor body is separable from and disposable in the drillstring at a radially offset distance from the longitudinal axis of the drillstring. The sensor further includes a transmitting antenna disposed along a length of the sensor body, a receiving antenna disposed along a length of the sensor body, and an electronics section contained within the sensor body for generating and receiving signals to and from the transmitting and receiving antennas.

Abstract: A rotary steerable bottom hole assembly includes a drill bit disposed at a distal end thereof, and azimuthal resistivity antennas and electronics configured to measure a distance to a formation boundary.

Abstract: A rotary guiding device includes a rotating shaft to rotationally drive a tool head. The rotating shaft includes upper and lower shaft portions, and a steerable portion, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion. A non-rotating body is mounted on the upper shaft portion, the non-rotating body is substantially non-rotating with respect to the rotating shaft in circumferential direction when the rotating shaft rotationally drives the tool head. The lower shaft portion includes a rib portion coinciding at least partially in axial direction with the non-rotating body. The non-rotating body includes at least three hydraulic driving mechanisms uniformly distributed along its circumferential direction, the three hydraulic driving mechanisms controllably generate radial drive forces respectively, the radial driving forces act on the rib portion overlapping the non-rotating body so the lower shaft portion can be deflectable relative to the steerable portion.

Abstract: A resistivity measuring tool used in a drillstring having a drill bit on a distal end for drilling a wellbore in a formation includes a tool body having a longitudinal axis, a transmitting antenna, and a receiving antenna. The receiving antenna includes an antenna body having a longer axis disposed longitudinally in the tool body, and a wire coil having a central axis disposed around the antenna body, wherein the wire coil central axis is substantially perpendicular to the longer axis of the antenna body, and wherein the wire coil is configured to generate a magnetic moment orthogonal to the tool body longitudinal axis. The transmitting antenna is configured to transmit electromagnetic energy into the formation and induce a voltage signal related to a parameter of the formation in the receiving antenna.

Abstract: The present application pertains to a universal bottom hole assembly node module. The module comprises an azimuthal resistivity module, an azimuthal gamma module, a pressure while drilling module, or any combination thereof. The module includes a communication system configured to provide two way communication between a rotary steerable system and a measurement while drilling system. This advantageously allows real time geosteering, well control, hydraulics analysis for drilling optimization, and/or evaluation of motor efficiency.

Abstract: A hybrid rotary guiding device, includes: rotating shaft, the rotating shaft is used to drive the head of a drill tool to rotate, the rotating shaft includes an upper shaft portion, a lower shaft portion, and a steerable portion, a separation distance exists between the upper shaft portion and the lower shaft portion in the axial direction, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion; the upper shaft portion is installed with at least three first hydraulic mechanisms, and the lower shaft portion is installed with at least three second hydraulic mechanisms, the second hydraulic mechanism is adapted to drive a pushing member against the wall of the well to guide the head of a drill tool, the first hydraulic mechanism and the second hydraulic mechanism are configured so that the first hydraulic mechanism can drive the second hydraulic mechanism to drive the pushing member.

Abstract: The invention discloses an anti-rotating device of non-rotating sleeve. The anti-rotating device is connected with the non-rotating sleeve in such way so that the anti-rotating device can transmit circumferential acting force to the non-rotating sleeve, thus the non-rotating sleeve are prevented from rotating, the anti-rotating device comprises an anti-rotating member and a resilient member, the anti-rotating member can move in a generally radial direction of the non-rotating sleeve, and the resilient member acts on the anti-rotating member and provides acting force being substantially radially outward for the anti-rotating member.

Abstract: A hybrid rotary guiding device, includes: rotating shaft, the rotating shaft is used to drive the head of a drill tool to rotate, the rotating shaft includes an upper shaft portion, a lower shaft portion, and a steerable portion, a separation distance exists between the upper shaft portion and the lower shaft portion in the axial direction, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion; the upper shaft portion is installed with at least three first hydraulic mechanisms, and the lower shaft portion is installed with at least three second hydraulic mechanisms, the second hydraulic mechanism is adapted to drive a pushing member against the wall of the well to guide the head of a drill tool, the first hydraulic mechanism and the second hydraulic mechanism are configured so that the first hydraulic mechanism can drive the second hydraulic mechanism to drive the pushing member.

Abstract: The invention discloses an anti-rotating device of non-rotating sleeve. The anti-rotating device is connected with the non-rotating sleeve in such way so that the anti-rotating device can transmit circumferential acting force to the non-rotating sleeve, thus the non-rotating sleeve are prevented from rotating, the anti-rotating device comprises an anti-rotating member and a resilient member, the anti-rotating member can move in a generally radial direction of the non-rotating sleeve, and the resilient member acts on the anti-rotating member and provides acting force being substantially radially outward for the anti-rotating member.

Abstract: A rotary guiding device comprises a rotating shaft, the rotating shaft is used to drive a tool head to rotate, and the rotating shaft includes at least one steerable portion; a first non-rotating body and a second non-rotating body, the first non-rotating body and the second non-rotating body are substantially in a non-rotating state in a circumferential direction thereof relative to the rotating shaft when the rotating shaft drives the tool head to rotate; a guide driving mechanism, the guide driving mechanism is configured to connect the first non-rotating body and the second non-rotating body, the guide driving mechanism is adapted to generate a substantially axial driving force to change the relative direction between the first non-rotating body and the second non-rotating body, thereby changing the orientation of the tool head.

Abstract: A rotary steerable bottom hole assembly includes a drill bit disposed at a distal end thereof, and azimuthal resistivity antennas and electronics configured to measure a distance to a formation boundary.

Abstract: A rotary guiding device based on radial driving force, comprising: a rotating shaft, the rotating shaft is used to drive a tool head to rotate, the rotating shaft includes an upper shaft portion, a lower shaft portion, and a steerable portion, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion;a non-rotating body mounted on the upper shaft portion, the non-rotating body is substantially non-rotating with respect to the rotating shaft in the circumferential direction when the rotating shaft rotationally drives the tool head, the lower shaft portion includes a rib portion that coincides at least partially in the axial direction with the non-rotating body, the non-rotating body includes at least three hydraulic driving mechanisms uniformly distributed along its circumferential direction, the three hydraulic driving mechanisms are adapted to controllably generate radial drive forces respectively, the radial driving forces acts on the rib portion that is overlapped

Abstract: An apparatus for communicating with a downhole tool includes a sensor body including at least two electrodes electrically insulated from one another and an external control device configured to engage the two electrodes. Detection circuitry connected to the two electrodes is configured to monitor an electrical status across the two electrodes, through the external control device, and upon detecting a change in electrical status that matches a predefined pattern, communicate a command to power management circuitry to alter a power status of the downhole tool.

Abstract: A resistivity-measuring sensor disposable within a drillstring includes a sensor body having a longitudinal axis, wherein the sensor body is separable from and disposable in the drillstring at a radially offset distance from the longitudinal axis of the drillstring. The sensor further includes a transmitting antenna disposed along a length of the sensor body, a receiving antenna disposed along a length of the sensor body, and an electronics section contained within the sensor body for generating and receiving signals to and from the transmitting and receiving antennas.