| Patent application number | Description | Published |
|---|
| 20090067285 | 3D DEGHOSTING OF MULTICOMPONENT OR OVER / UNDER STREAMER RECORDINGS USING CROSS-LINE WAVENUMBER SPECTRA OF HYDROPHONE DATA - A technique includes obtaining pressure data that was acquired by seismic sensors towed as part of a three-dimensional spread of streamers and obtaining particle motion data, which are indicative of particle motion at locations of the sensors. The technique includes estimating cross-line spectra of the pressure data based at least in part on the pressure data, and the technique includes deghosting the particle motion data based at least in part on the estimated cross-line spectra. | 03-12-2009 |
| 20090296523 | JOINTLY INTERPOLATING AND DEGHOSTING SEISMIC DATA - A technique includes representing actual measurements of a seismic wavefield as combinations of an upgoing component of the seismic wavefield and ghost operators. Interpolated and deghosted components of the seismic wavefield are jointly determined based at least in part on the actual measurements and the representation. | 12-03-2009 |
| 20100211319 | RECONSTRUCTING SEISMIC WAVEFIELDS - A technique includes receiving seismic data acquired in a seismic survey in the vicinity of a reflecting interface. The survey has an associated undersampled direction. The technique includes providing second data indicative of discrete samples of incident and reflected components of a continuous seismic wavefield along the undersampled direction and relating the discrete samples to a linear combination of the continuous incident and reflected seismic wavefields using at least one linear filter. Based on the relationship, an unaliased representation of the linear combination of the continuous incident and reflected seismic wavefields is constructed. | 08-19-2010 |
| 20100211320 | RECONSTRUCTING A SEISMIC WAVEFIELD - A technique to reconstruct a seismic wavefield includes receiving datasets, where each dataset is indicative of samples of one of a plurality of measurements of a seismic wavefield that are associated with a seismic survey. The technique includes modeling the plurality of measurements of a seismic wavefield as being generated by the application of at least one linear filter to the seismic wavefield. The technique includes processing the datasets based on the linear filter(s) and a generalized matching pursuit technique to generate data indicative of a spatially continuous representation of the seismic wavefield. | 08-19-2010 |
| 20100211322 | INTERPOLATING A PRESSURE WAVEFIELD ALONG AN UNDERSAMPLED DIRECTION - A technique includes receiving seismic data acquired in a seismic survey. The survey has an associated undersampled direction, and the seismic data contains samples, which are indicative of a pressure wavefield and a directional derivative of the pressure wavefield that contains information related to vertical variations. The technique includes relating the samples to the pressure wavefield or to the directional derivative of the pressure wavefield using at least one linear filter and based on the relationship, constructing a substantially unaliased continuous representation of the pressure wavefield or the directional derivative of the pressure wavefield along the undersampled direction. | 08-19-2010 |
| 20110002192 | Jointly Interpolating and Deghosting Seismic Data - A technique includes representing actual measurements of a seismic wavefield as combinations of an upgoing component of the seismic wavefield and ghost operators. Interpolated and deghosted components of the seismic wavefield are jointly determined based at least in part on the actual measurements and the representation. | 01-06-2011 |
