A system includes a tool to dispose in a wellbore lined with pipe. The tool includes first and second receiver coils having a non-uniform winding along a longitudinal axis, a third receiver coil having a non-uniform winding coaxial with at least one of the first and second receiver coils, and a transmitter. The system includes a processor to execute instructions to perform operations including causing the transmitter to emit an induced magnetic field, measuring the induced magnetic field using the first receiver coil to create a first measurement and using the first and second receiver coils to create a second measurement. The operations include determining a static magnetic field, selecting the first or second measurement based on a magnitude of the static magnetic field to determine a selected measurement, and determining at least one property of the pipe using the selected measurement.

The disclosure presents processes to generate look ahead data to guide borehole operations, such as drilling operations. The processes can array collected resistivity data around a representation of an active borehole. The array can be in various patterns, such as an interleaved helix pattern. Each slice of data from the collected resistivity data can be positioned and oriented corresponding to the central point depth parameter for each slice of data. A selection of one or more card views can be enabled to display details of the collected resistivity data corresponding to the selected slice of data. An analysis of the resistivity data can generate an identification of a boundary, such as an object or a subterranean formation change, in the subterranean formation look ahead portion of the active borehole. The boundary identification can be used as inputs to a borehole operation plan or to a geo-steering system.

A system for wireless transmission of power in deep subsurface monitoring includes a casing, an oscillating current source configured to energize the casing, and a wireless telemetry module disposed on the casing. The wireless telemetry module includes a shell, a toroidal antenna disposed within the shell and configured to collect electrical energy from the energized casing, a telemetry transceiver control unit disposed within the shell, a battery pack disposed within the shell, a downhole signal acquisition unit disposed within the shell, and a sensor interface disposed within the shell. The battery pack is configured to store the collected electrical energy. The telemetry transceiver control unit is configured to generate a binary code to drive the toroidal antenna.

A system for wireless transmission of power in deep subsurface monitoring includes a casing, an oscillating current source configured to energize the casing, and a wireless telemetry module disposed on the casing. The wireless telemetry module includes a shell, a toroidal antenna disposed within the shell and configured to collect electrical energy from the energized casing, a telemetry transceiver control unit disposed within the shell, a battery pack disposed within the shell, a downhole signal acquisition unit disposed within the shell, and a sensor interface disposed within the shell. The battery pack is configured to store the collected electrical energy. The telemetry transceiver control unit is configured to generate a binary code to drive the toroidal antenna.

Provided is a fluid flow control system and a well system. The fluid flow control system, in one aspect, includes a valve having a fluid inlet operable to receive fluid, a control inlet operable to receive a control fluid, and a fluid outlet operable to pass the fluid to the tubing, the valve configured to open or close the fluid outlet based upon the control fluid. The fluid flow control system according to this aspect further includes a density control valve having an inlet conduit operable to receive the fluid and an outlet conduit coupled to the control inlet of the valve, the density control valve operable to send the control fluid to the valve to open or close the fluid outlet based upon a density of the fluid.

A method and system for visualizing data to detect a collar. A method may comprise disposing an electromagnetic logging tool downhole; emitting an electromagnetic field from the transmitter; energizing a casing with the electromagnetic field to produce an eddy current; recording the eddy current from the casing with the receiver; creating a variable-density-log from the recorded eddy current; selecting a wrapping period for the variable-density-log; creating a wrapped-variable-density-log from the variable-density-log using the wrapping period; and determining at least one collar location and a pipe index with the wrapped-variable-density-log. A system for to detect a collar may comprise an electromagnetic logging tool. The electromagnetic logging tool may comprise a transmitter and a receiver, wherein the transmitter and the receiver may be a coil. The system may further comprise an information handling system.

A method and system for visualizing data to detect a collar. A method may comprise disposing an electromagnetic logging tool downhole; emitting an electromagnetic field from the transmitter; energizing a casing with the electromagnetic field to produce an eddy current; recording the eddy current from the casing with the receiver; creating a variable-density-log from the recorded eddy current; selecting a wrapping period for the variable-density-log; creating a wrapped-variable-density-log from the variable-density-log using the wrapping period; and determining at least one collar location and a pipe index with the wrapped-variable-density-log. A system for to detect a collar may comprise an electromagnetic logging tool. The electromagnetic logging tool may comprise a transmitter and a receiver, wherein the transmitter and the receiver may be a coil. The system may further comprise an information handling system.

The present disclosure describes various antenna assemblies, each antenna coil being disposed about a tool body section in an antenna pathway. The antenna pathway passes through alternating grooves and lands. In each embodiment, at least one of the grooves is disposed in the tool body section at a non-axial direction relative to the longitudinal axis of the tool body section. In an embodiment, the antenna coil is an axial coil or a tilted coil. Additional grooves oriented at axial direction may be disposed on the tool body section. Each of the antenna assemblies disclosed may be employed in an electromagnetic logging tool for providing directional measurements while drilling.

The present disclosure describes various antenna assemblies, each antenna coil being disposed about a tool body section in an antenna pathway. The antenna pathway passes through alternating grooves and lands. In each embodiment, at least one of the grooves is disposed in the tool body section at a non-axial direction relative to the longitudinal axis of the tool body section. In an embodiment, the antenna coil is an axial coil or a tilted coil. Additional grooves oriented at axial direction may be disposed on the tool body section. Each of the antenna assemblies disclosed may be employed in an electromagnetic logging tool for providing directional measurements while drilling.

Methods, systems, devices, and products for taking multi-component induction tool measurements of a three-dimensional space from an interior of a plurality of nested tubulars in a borehole in an earth formation and estimating the property for each of the at least two tubulars using the multi-component induction tool measurements. The multicomponent induction tool measurements may be responsive to a property corresponding to at least two conductive tubulars of the plurality of nested tubular. Taking multi-component induction tool measurements may include taking three-dimensional low-frequency sinusoidal frequency domain waveform resistivity measurements and taking three-dimensional transient EM measurements with the multi-component induction tool.