Patent application number | Description | Published |
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 |
20100018719 | Inversion of CSEM Data With Measurement System Signature Suppression - A method for suppressing measurement system signature, or artifacts, that arise when controlled source electromagnetic survey data are inverted to obtain a resistivity image of a subsurface region. The method involves identifying regions ( | 01-28-2010 |
20100176791 | Method For Correcting The Phase of Electromagnetic Data - Method for identifying, determining and correcting source-related phase errors in data from a controlled source electromagnetic survey by using data from ordinary survey receivers, i.e. without benefit of source monitoring data. Abrupt anomalies indicating source malfunctions are identified ( | 07-15-2010 |
20110255371 | Hydrocarbon Detection With Passive Seismic Data - Method for using seismic data from earthquakes to address the low frequency lacuna problem in traditional hydrocarbon exploration methods. Seismometers with frequency response Select Receivers of Desired Frequency Ranges and Design Survey Seismometer Configuration down to about | 10-20-2011 |
20120080197 | Constructing Resistivity Models From Stochastic Inversion - Embodiments described herein use stochastic inversion ( | 04-05-2012 |
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 |
20120275267 | Seismic Data Processing - Provided is a method for processing seismic data. One exemplary embodiment includes the steps of obtaining a plurality of initial subsurface images; decomposing each of the initial subsurface images into components; identifying a set of components comprising one of (i) components having at least one substantially similar characteristic across the plurality of initial subsurface images, and (ii) components having substantially dissimilar characteristics across the plurality of initial subsurface images; and generating an enhanced subsurface image using the identified set of components. Each of the initial subsurface images is generated using a unique random set of encoding functions. | 11-01-2012 |
20130003500 | Seismic Data Processing - The invention includes a method for reducing noise in migration of seismic data, particularly advantageous for imaging by simultaneous encoded source reverse-time migration (SS-RTM). One example embodiment includes the steps of obtaining a plurality of initial subsurface images; decomposing each of the initial subsurface images into components; identifying a set of components comprising one of (i) components having at least one substantially similar characteristic across the plurality of initial subsurface images, and (ii) components having substantially dissimilar characteristics across the plurality of initial subsurface images; and generating an enhanced subsurface image using the identified set of components. For SS-RTM, each of the initial subsurface images is generated by migrating several sources simultaneously using a unique random set of encoding functions. Another embodiment of the invention uses SS-RTM for velocity model building. | 01-03-2013 |
20130064431 | Efficient Computation of Wave Equation Migration Angle Gathers - Method for efficient computation of wave equation migration angle gathers by using multiple imaging conditions. Common reflection angle or common azimuth gathers or gathers including both common reflection angles and common azimuth angles are produced as the data are migrated. In the course of either wave equation migration or reverse time migration, the pressures and particle motion velocities that need to be computed are sufficient to also compute the Poynting vector pointing in the direction of source-side ( | 03-14-2013 |
20130191090 | 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 ( | 07-25-2013 |
20150063066 | Creating Seismic Images Using Expanded Image Gathers - In the present inventive method, individual traces of seismic data are migrated ( | 03-05-2015 |