Abstract: The present disclosure includes a method for combining controlled and uncontrolled seismic data. The method includes accessing one or more controlled signals, each controlled signal associated with a respective receiver of a plurality of receivers. The method also includes accessing one or more uncontrolled signals, each uncontrolled signal associated with a respective receiver of the plurality of receivers. The method also includes generating one or more reconstructed signals based on the one or more uncontrolled signals. The method also includes generating a composite image based at least on the one or more controlled signals and the one or more reconstructed signals. The present disclosure may also include associated systems and apparatuses.

Abstract: Device and method for calculating a set of surface wave dispersion curves. The method includes receiving seismic data recorded with seismic sensors over an area to be surveyed; selecting region units that cover the area to be surveyed; gathering traces for the region units; processing in a computing device the traces to obtain a set of candidate measurements for each region unit; teaching a decision algorithm based on a first subset of the set of candidate measurements; and calculating the set of surface wave dispersion curves by running the decision algorithm on a second subset of the set of candidate measurements.

Abstract: Method and device for generating an induced source shot point gather. The method includes receiving seismic data at least partially generated by an unintentional seismic source; calculating plural reconstructed receiver traces (RGi) based on pairing traces from the seismic data; and generating the induced source shot point gather based on the plural reconstructed receiver traces (RGi).

Abstract: Systems and methods for deghosting seismic data using migration of sparse arrays are disclosed. The methods may include obtaining input seismic data, the input seismic data including a first set of seismic data recorded by a first set of seismic receivers located at a first depth, and a second set of seismic data recorded by a second set of seismic receivers located at a second depth. The method may further include migrating the first set of seismic data to an image grid, and migrating the second set of seismic data to the image grid. Additionally, the method may further include calculating a ghost wave based on the first and second sets of migrated seismic data, and deghosting the first set of migrated seismic data by removing the ghost wave.

Abstract: Device and method for calculating a set of surface wave dispersion curves. The method includes receiving seismic data recorded with seismic sensors over an area to be surveyed; selecting region units that cover the area to be surveyed; gathering traces for the region units; processing in a computing device the traces to obtain a set of candidate measurements for each region unit; teaching a decision algorithm based on a first subset of the set of candidate measurements; and calculating the set of surface wave dispersion curves by running the decision algorithm on a second subset of the set of candidate measurements.

Abstract: The present disclosure includes a method for combining controlled and uncontrolled seismic data. The method includes accessing one or more controlled signals, each controlled signal associated with a respective receiver of a plurality of receivers. The method also includes accessing one or more uncontrolled signals, each uncontrolled signal associated with a respective receiver of the plurality of receivers. The method also includes generating one or more reconstructed signals based on the one or more uncontrolled signals. The method also includes generating a composite image based at least on the one or more controlled signals and the one or more reconstructed signals. The present disclosure may also include associated systems and apparatuses.

Abstract: The present disclosure includes a method for stabilizing controlled seismic signals based on uncontrolled seismic signals. The method includes calculating reconstructed signals associated with a first receiver. Each reconstructed signal is based on uncontrolled signals recorded by a respective pair of receivers that includes the first receiver and a respective second receiver. The method also includes calculating signal variations. Each signal variation is associated with a respective pair of receivers and based on a difference between the reconstructed signal associated with the respective pair of receivers and a reference associated with the respective pair of receivers. The method also includes calculating a stabilization factor for the first receiver based on the first signal variations. The method also includes modifying controlled seismic signals recorded by the first receiver by applying the stabilization factor to the controlled seismic signals.

Abstract: Method and device for generating an induced source shot point gather. The method includes receiving seismic data at least partially generated by an unintentional seismic source; calculating plural reconstructed receiver traces (RGi) based on pairing traces from the seismic data; and generating the induced source shot point gather based on the plural reconstructed receiver traces (RGi).

Abstract: The present disclosure includes a method for stabilizing controlled seismic signals based on uncontrolled seismic signals. The method includes calculating reconstructed signals associated with a first receiver. Each reconstructed signal is based on uncontrolled signals recorded by a respective pair of receivers that includes the first receiver and a respective second receiver. The method also includes calculating signal variations. Each signal variation is associated with a respective pair of receivers and based on a difference between the reconstructed signal associated with the respective pair of receivers and a reference associated with the respective pair of receivers. The method also includes calculating a stabilization factor for the first receiver based on the first signal variations. The method also includes modifying controlled seismic signals recorded by the first receiver by applying the stabilization factor to the controlled seismic signals.

Abstract: A method for acquiring and improving seismic data includes activating a first seismic source located below a geophysical surface at a first depth and a second seismic source located below the geophysical surface at a second depth, wherein the second depth is below the first depth, acquiring seismic data with a seismic receiver in conjunction with activating the first seismic source and the second seismic source, and aligning primary reflections within the seismic data to provide improved seismic data. The method may also include determining changes to the regions below the second depth by comparing improved seismic data corresponding to a first acquisition event with improved seismic data corresponding to a second acquisition event. A corresponding system is also disclosed herein.