Abstract: Methods for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such a method includes positioning one or more acoustic sensors to detect drill sounds emanating from the drill bit and the rock encountered during drilling operations, connecting the sensors to select components of a drilling rig to maximally pick up the drill sounds of the drill bit engaging rock during drilling operations. The method also includes providing and deploying an inductive telemetry, wireless telemetry, or wired transmitting system. The method also includes providing and configuring a computer to analyze the “raw” acoustic signals received from the acoustic sensors through the respective transmitting system.

Abstract: Apparatus, computer readable medium, and program code for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such an apparatus includes a downhole sensor subassembly connected between a drill bit and a drill string, acoustic sensors operably coupled to a downhole processor, a borehole telemetry system, downhole and surface data transmitting interfaces, and a surface computer operably coupled to the downhole data transmitting interface. The downhole processor is adapted to perform operations including receiving raw acoustic sensor data resulting from rotational contact of the drill bit with rock, transforming the raw acoustic sensor data into the frequency domain, filtering the transformed data, and deriving acoustic characteristics from the filtered data. The surface computer is adapted to perform operations including deriving petrophysical properties from the acoustic characteristics directly or by utilizing a petrophysical properties evaluation algorithm.

Abstract: Systems, computer readable media, and program code to provide for filtering noise and/or restoring attenuated spectral components in acoustic signals, are provided. An exemplary embodiment of a system is configured for dynamically filtering each of a plurality of raw FFT data samples of a record to remove or attenuate background noise contained therein to thereby produce a corresponding plurality of cleaned FFT data samples. The sample-specific background noise is removed or attenuated by a record-specific dynamic filter to produce the corresponding cleaned FFT data samples.

Abstract: Methods of providing for filtering noise and/or restoring attenuated spectral components in acoustic signals, are provided. An exemplary embodiment of a method includes dynamically filtering each of a plurality of raw FFT data samples of a record to remove or attenuate background noise contained therein to thereby produce a corresponding plurality of cleaned FFT data samples. The sample-specific background noise is removed or attenuated by a record-specific dynamic filter to produce the corresponding cleaned FFT data samples. The method can also include restoring the attenuated high-frequency components of the cleaned data samples through application of a record-specific Restoring Processor at least partially defined by a portion of the cleaned data samples and a Gain Function to thereby produce cleaned and restored data samples, and applying an inverse transformation to convert the cleaned and restored data samples into cleaned and restored data samples in time domain data.

Abstract: Implementations provide identification of rock boundaries and evaluation of rock interval velocities in subterranean zones. Actions can include receiving acoustic signals associated with sounds produced by a well tool implemented to perform a well operation by contacting a portion of a subterranean zone, the acoustic signals being composed of source acoustic signals and reflected acoustic signals produced in response to the source acoustic signals, processing the acoustic signals to determine the source acoustic signals and the reflected acoustic signals and determining properties of the subterranean zone based on the source acoustic signals and the reflected acoustic signals.

Abstract: Methods of identifying rock properties in real-time during drilling, are provided. An example of method includes connecting a downhole sensor subassembly between a drill bit and a drill string, operably coupling acoustic sensors to a downhole processor, operably coupling a borehole telemetry system, downhole and surface data transmitting interfaces, and a surface computer to the downhole data transmitting interface. The method also includes receiving raw acoustic sensor data resulting from rotational contact of the drill bit with rock by the downhole processor, transforming the raw acoustic sensor data into the frequency domain, filtering the transformed data, and deriving acoustic characteristics from the filtered data. The method also includes the surface computer receiving the acoustic characteristics and deriving petrophysical properties from the acoustic characteristics directly or by utilizing a petrophysical properties evaluation algorithm.

Abstract: Methods of identifying rock properties in real-time during drilling, are provided. An example of method includes connecting a downhole sensor subassembly between a drill bit and a drill string, operably coupling acoustic sensors to a downhole processor, operably coupling a borehole telemetry system, downhole and surface data transmitting interfaces, and a surface computer to the downhole data transmitting interface. The method also includes receiving raw acoustic sensor data resulting from rotational contact of the drill bit with rock by the downhole processor, transforming the raw acoustic sensor data into the frequency domain, filtering the transformed data, and deriving acoustic characteristics from the filtered data. The method also includes the surface computer receiving the acoustic characteristics and deriving petrophysical properties from the acoustic characteristics directly or by utilizing a petrophysical properties evaluation algorithm.

Abstract: Implementations provide identification of rock boundaries and evaluation of rock interval velocities in subterranean zones. Actions can include receiving acoustic signals associated with sounds produced by a well tool implemented to perform a well operation by contacting a portion of a subterranean zone, the acoustic signals being composed of source acoustic signals and reflected acoustic signals produced in response to the source acoustic signals, processing the acoustic signals to determine the source acoustic signals and the reflected acoustic signals and determining properties of the subterranean zone based on the source acoustic signals and the reflected acoustic signals.

Abstract: Apparatus, computer readable medium, and program code for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such an apparatus includes a downhole sensor subassembly connected between a drill bit and a drill string, acoustic sensors operably coupled to a downhole data interface, and a surface computer operably coupled to the downhole data interface.

Abstract: Apparatus, computer readable medium, and program code for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such an apparatus includes a downhole sensor subassembly connected between a drill bit and a drill string, acoustic sensors operably coupled to a downhole data interface, and a surface computer operably coupled to the downhole data interface.

Abstract: Disclosed is an apparatus, method, and program product for steering a drill bit within a pay zone in a lateral well. The method includes receiving acoustic signature data from an acoustic signal analyzing apparatus. The acoustic signature data includes an amplitude spectrum and one or more acoustic characteristics evaluated from an acoustic signal provided by a sensor attached to at least one of a drive shaft and a packing box of a drill rig, and generated in real-time as a result of rotational contact of the drill bit with encountered rock in the lateral well during drilling. The method further includes comparing the received real-time acoustic signature data to predetermined acoustic signatures determined for a plurality of rock samples, and identifying a lithology type of the rock being encountered by the drill bit based on the comparison.

Abstract: Implementations provide identification of rock boundaries and evaluation of rock interval velocities in subterranean zones. Actions can include receiving acoustic signals associated with sounds produced by a well tool implemented to perform a well operation by contacting a portion of a subterranean zone, the acoustic signals being composed of source acoustic signals and reflected acoustic signals produced in response to the source acoustic signals, processing the acoustic signals to determine the source acoustic signals and the reflected acoustic signals and determining properties of the subterranean zone based on the source acoustic signals and the reflected acoustic signals.

Abstract: Apparatus for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such an apparatus includes one or more acoustic sensors positioned to detect drill sounds emanating from the drill bit and the rock encountered during drilling operations, connected to select components of a drilling rig to maximally pick up the drill sounds of the drill bit engaging rock during drilling operations. The apparatus also includes an inductive telemetry, wireless telemetry, or wired transmitting system. The apparatus also includes a computer to analyze the acoustic signals received from the acoustic sensors through the respective transmitting system for lithology type and petrophysical properties.

Abstract: Methods for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such a method includes positioning one or more acoustic sensors to detect drill sounds emanating from the drill bit and the rock encountered during drilling operations, connecting the sensors to select components of a drilling rig to maximally pick up the drill sounds of the drill bit engaging rock during drilling operations. The method also includes providing and deploying an inductive telemetry, wireless telemetry, or wired transmitting system. The method also includes providing and configuring a computer to analyze the “raw” acoustic signals received from the acoustic sensors through the respective transmitting system.

Abstract: Disclosed is an apparatus, method, and program product for steering a drill bit within a pay zone in a lateral well. The method includes receiving acoustic signature data from a downhole processor assembly. The acoustic signature data includes an amplitude spectrum and one or more acoustic characteristics evaluated from an acoustic signal provided by a sensor arranged adjacent to a drill bit and generated in real-time as a result of rotational contact of the drill bit with encountered rock in the lateral well during drilling. The method further includes comparing the received real-time acoustic signature data to predetermined acoustic signatures determined for a plurality of rock samples, and identifying a lithology type of the rock being encountered by the drill bit based on the comparison. Further, the method includes steering the drill bit in a predefined direction, in real-time, based on the identified lithology type of the rock, for maintaining the drill bit within the pay zone of the lateral well.

Abstract: Methods for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such a method includes positioning one or more acoustic sensors to detect drill sounds emanating from the drill bit and the rock encountered during drilling operations, connecting the sensors to select components of a drilling rig to maximally pick up the drill sounds of the drill bit engaging rock during drilling operations. The method also includes providing and deploying an inductive telemetry, wireless telemetry, or wired transmitting system. The method also includes providing and configuring a computer to analyze the “raw” acoustic signals received from the acoustic sensors through the respective transmitting system.

Abstract: Methods of providing for filtering noise and/or restoring attenuated spectral components in acoustic signals, are provided. An exemplary embodiment of a method includes dynamically filtering each of a plurality of raw FFT data samples of a record to remove or attenuate background noise contained therein to thereby produce a corresponding plurality of cleaned FFT data samples. The sample-specific background noise is removed or attenuated by a record-specific dynamic filter to produce the corresponding cleaned FFT data samples. The method can also include restoring the attenuated high-frequency components of the cleaned data samples through application of a record-specific Restoring Processor at least partially defined by a portion of the cleaned data samples and a Gain Function to thereby produce cleaned and restored data samples, and applying an inverse transformation to convert the cleaned and restored data samples into cleaned and restored data samples in time domain data.

Abstract: Systems, computer readable media, and program code to provide for filtering noise and/or restoring attenuated spectral components in acoustic signals, are provided. An exemplary embodiment of a system is configured for dynamically filtering each of a plurality of raw FFT data samples of a record to remove or attenuate background noise contained therein to thereby produce a corresponding plurality of cleaned FFT data samples. The sample-specific background noise is removed or attenuated by a record-specific dynamic filter to produce the corresponding cleaned FFT data samples.

Abstract: Apparatus, computer readable medium, and program code for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such an apparatus includes a downhole sensor subassembly connected between a drill bit and a drill string, acoustic sensors operably coupled to a downhole processor, a borehole telemetry system, downhole and surface data transmitting interfaces, and a surface computer operably coupled to the downhole data transmitting interface. The downhole processor is adapted to perform operations including receiving raw acoustic sensor data resulting from rotational contact of the drill bit with rock, transforming the raw acoustic sensor data into the frequency domain, filtering the transformed data, and deriving acoustic characteristics from the filtered data. The surface computer is adapted to perform operations including deriving petrophysical properties from the acoustic characteristics directly or by utilizing a petrophysical properties evaluation algorithm.

Abstract: Methods for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such a method includes positioning one or more acoustic sensors to detect drill sounds emanating from the drill bit and the rock encountered during drilling operations, connecting the sensors to select components of a drilling rig to maximally pick up the drill sounds of the drill bit engaging rock during drilling operations. The method also includes providing and deploying an inductive telemetry, wireless telemetry, or wired transmitting system. The method also includes providing and configuring a computer to analyze the “raw” acoustic signals received from the acoustic sensors through the respective transmitting system.