| Patent application number | Description | Published |
|---|
| 20090040872 | Removing Vibration Noise from Multicomponent Streamer Measurements - A technique includes obtaining a particle motion measurement and a pressure gradient measurement, which were acquired by seismic sensors while in tow. The technique includes removing noise from one of the measurements, which includes scaling the measurements relative to each other and subtracting one of the measurements from the other measurement. | 02-12-2009 |
| 20090092003 | CONTROLLING A SEISMIC SURVEY TO REDUCE THE EFFECTS OF VIBRATION NOISE - A technique includes towing a particle motion sensor in connection with a seismic survey and controlling the survey to cause a notch in a frequency response of the particle motion sensor to substantially coincide with a frequency band at which aliased vibration noise appears in a seismic signal acquisition space of the particle motion sensor. | 04-09-2009 |
| 20090092006 | SEISMIC STREAMER PLATFORM - A technique includes designing a streamer, which includes a cable and seismic sensors based at least in part on a relationship between vibration noise and a bending stiffness of the cable. | 04-09-2009 |
| 20090161487 | TECHNIQUE AND SYSTEM TO CANCEL NOISE IN MEASUREMENTS PROVIDED BY SENSORS OF A MULTI-COMPONENT STREAMER - A technique includes determining a displacement of an acoustic sensor while in tow. Based on the determined displacement of the sensor, a measurement that is acquired by the sensor is compensated to remove noise from the measurement. | 06-25-2009 |
| 20090296521 | NOISE REDUCTION IN PARTICLE MOTION SENSING SEISMIC STREAMER - An apparatus includes particle motion sensors and a streamer that contains the particle motion sensors. The streamer is to be towed in connection with a seismic survey, and the towing of the streamer produces a turbulent flow. The streamer includes an inner cable that contains the particle motion sensors and a fluid containing layer to surround the inner cable to reduce noise otherwise sensed by the particle motion sensors due to the turbulent flow. | 12-03-2009 |
| 20090323468 | SEISMIC SENSOR CABLE - An apparatus includes a cable; and seismic sensors that are disposed in the cable. The apparatus also includes spacers that are distributed in the cable such that each seismic sensor is disposed in an interval of the cable separating a different adjacent pair of the spacers. The spacers of each pair are separated by at least twenty-five centimeters. | 12-31-2009 |
| 20100039889 | MOUNTING A SEISMIC SENSOR IN A CABLE - An apparatus includes a cable; and a gel-based filler material, seismic sensors that are disposed in the cable. The seismic sensors are suspended in pockets, and each pocket contains a material that has a shear stiffness that is less than a shear stiffness of the gel-based filler material to attenuate a flow noise. | 02-18-2010 |
| 20100202251 | USING A ROTATION SENSOR MEASUREMENT TO ATTENUATE NOISE ACQUIRED BY A STREAMER-DISPOSED SENSOR - A technique includes receiving data indicative of a first measurement acquired by a rotation sensor on a seismic streamer and based on the first measurement, estimating a torque noise present in a measurement acquired by a second sensor on the streamer. The technique includes attenuating the torque noise based on the estimate. | 08-12-2010 |
| 20110103181 | System and Technique to Suppress the Acquisition of Torque Noise on a Multi-Component Streamer - A technique includes distributing particle motion sensors along the length of a seismic streamer. Each particle motion sensor is eccentrically disposed at an associated angle about an axis of the seismic streamer with respect to a reference line that is common to the associated angles. The sensors are mounted to suppress torque noise in measurements that are acquired by the particle motion sensors. This mounting includes substantially varying the associated angles. | 05-05-2011 |
