Patent application number | Description | Published |
20080205193 | Method for continuous sweeping and separation of multiple seismic vibrators - A method for simultaneously operating multiple seismic vibrators using continuous sweeps (little or no “listening” time between sweeps) for each vibrator, and recovering the separated seismic responses for each vibrator with the earth signature removed. Each vibrator is given a unique, continuous pilot signal. The earth response to the motion of each vibrator is measured or estimated. The vibrator motion records for each vibrator and the combined seismic data record for all the vibrators are parsed into separate shorter records. The shorter records are then used to form a system of simultaneous linear equations in the Fourier transform domain, following the HFVS method of Sallas and Allen. The equations are then solved for the separated earth responses. | 08-28-2008 |
20100018718 | ITERATIVE INVERSION OF DATA FROM SIMULTANEOUS GEOPHYSICAL SOURCES - Method for reducing the time needed to perform geophysical inversion by using simultaneous encoded sources in the simulation steps of the inversion process. The geophysical survey data are prepared by encoding ( | 01-28-2010 |
20110004409 | METHOD FOR PERFORMING CONSTRAINED POLARIZATION FILTERING - An exemplary method for filtering multi-component seismic data is provided. The exemplary method comprises identifying a plurality of characteristics of the seismic data, the plurality of characteristics corresponding to a relative manifestation of surface wave noise on the different components and identifying a time-frequency boundary in the seismic data, the time-frequency boundary delineating portions of the seismic data estimated to contain surface wave noise ( | 01-06-2011 |
20110069581 | Removal of Surface-Wave Noise In Seismic Data - The invention is a method to predict surface-wave waveforms ( | 03-24-2011 |
20110120724 | Estimation of Soil Properties Using Waveforms of Seismic Surface Waves - A method for transforming seismic surface waves into depth profiles of dynamic properties of the soil such as the soil shear modulus or wave velocity or wave attenuation. The invention uses seismic data recorded preferably with a plurality of sources and receivers with a two-stage inversion approach. First, variations in surface-wave waveforms are decomposed ( | 05-26-2011 |
20120109612 | Iterative Inversion of Data From Simultaneous Geophysical Sources - Method for reducing the time needed to perform geophysical inversion by using simultaneous encoded sources in the simulation steps of the inversion process. The geophysical survey data are prepared by encoding ( | 05-03-2012 |
20120269034 | Separation and Noise Removal For Multiple Vibratory Source Seismic Data - The invention discloses a way to recover separated seismograms with reduced interference noise by processing vibroseis data recorded (or computer simulated) with multiple vibrators shaking simultaneously or nearly simultaneously ( | 10-25-2012 |
20130114375 | Seismic Acquisition Method for Mode Separation - Method for separating different seismic energy modes in the acquisition ( | 05-09-2013 |
20130146282 | Estimation of Production Sweep Efficiency Utilizing Geophysical Data - Method for estimating fluid heterogeneity in a subsurface region from seismic wave attenuation or velocity dispersion that is either measured or extracted from geophysical data ( | 06-13-2013 |
20130315033 | NEAR-SURFACE NOISE PREDICTION AND REMOVAL FOR DATA RECORDED WITH SIMULTANEOUS SEISMIC SOURCES - A seismic data processing method for predicting and removing unwanted near-surface noise, e.g. refracted waves and surface waves, from composite seismograms acquired with multiple, encoded seismic sources in which the time records from the different sources overlap or interfere. Surface-consistent properties are determined ( | 11-28-2013 |
20140039799 | Seismic Inversion for Formation Properties and Attentuation Effects - Method for inverting seismic data to obtain reflection properties by estimating or measuring ( | 02-06-2014 |
20150057938 | SIMULTANEOUS SOURCING DURING BOTH SEISMIC ACQUSITION AND SEISMIC INVERSION - Method for acquiring, at reduced acquisition cost, seismic data using simultaneous, field-encoded sources in the field ( | 02-26-2015 |