| Patent application number | Description | Published |
|---|
| 20090323469 | TECHNIQUE AND SYSTEM TO INCREASE THE LENGTH OF A SEISMIC SHOT RECORD - A system includes an interface and a processor. The interface receives seismic datasets, which are associated with multiple firings of a set of at least one seismic source. Each dataset is acquired by seismic sensors during a different time period of a sequence of time periods that are limited by times at which the set of seismic source(s) are fired. The processor, for each of the firings of the set of seismic source(s), generates an associated shot record based on information contained at least two of the datasets. | 12-31-2009 |
| 20090326895 | TECHNIQUE AND SYSTEM FOR SEISMIC SOURCE SEPARATION - A technique includes obtaining first seismic data acquired by seismic sensors during a survey of a medium. The first seismic data are indicative of energy attributable to a plurality of interfering seismic sources. The technique includes generating datasets, with each dataset primarily indicating energy attributable to a different one of the seismic sources. For each seismic source, the datasets are generated as follows. The first seismic data are processed to add information to the first seismic data indicative of a geometry of the seismic source to produce second seismic data. The second seismic data is processed to perform migration based on an estimate of a geophysical model of the medium to produce migrated data. The migrated data are processed to perform reverse migration based on the estimate of the geophysical model to produce the dataset. | 12-31-2009 |
| 20100014381 | OPTIMIZING A SEISMIC SURVEY FOR SOURCE SEPARATION - A technique includes determining at least one parameter that characterizes a seismic survey in which multiple interfering seismic sources are fired and seismic sensors sense energy that is produced by the seismic sources. The determination of the parameter(s) includes optimizing the seismic survey for separation of the sensed energy according to the seismic sources. | 01-21-2010 |
| 20100039897 | REDUCING A NUMBER OF REQUIRED CHANNELS FOR SEISMIC SENSORS - To reduce a number of required channels for a survey system having seismic sensors, the seismic sensors are partitioned into groups of corresponding seismic sensors. An aggregation unit applies different transformations of signals of the seismic sensors within a particular one of the groups. The differently transformed signals within the particular group are aggregated to form an aggregated signal. The aggregated signal for the particular group is transmitted, over a channel of the survey system, to a processing system. | 02-18-2010 |
| 20100042325 | DETERMINING CHARACTERISTICS OF A SUBTERRANEAN BODY USING PRESSURE DATA AND SEISMIC DATA - To determine characteristics of a subterranean body, pressure testing is performed, where the pressure testing involves drawing down pressure in the well. Pressure data in the well is measured during the pressure testing, and a seismic surface operation is performed. Seismic data is measured as part of the seismic survey operation. The pressure data and the seismic data are provided to a processing system for processing to determine characteristics of the subterranean body. | 02-18-2010 |
| 20100096125 | ACTIVE SEISMIC MONITORING OF FRACTURING OPERATIONS - A method for managing a fracturing operation. In one implementation, the method may include positioning a seismic source and at least one seismic receiver near a hydrocarbon reservoir; pumping a fracturing fluid into a well bore of the hydrocarbon reservoir; performing a seismic survey with the seismic source and the at least one seismic receiver during the fracturing operation; and identifying locations of the fracturing fluid within subsurface formations in which the hydrocarbon reservoir is located. | 04-22-2010 |
| 20100271904 | SEPARATING SEISMIC SIGNALS PRODUCED BY INTERFERING SEISMIC SOURCES - A technique includes obtaining seismic data acquired by seismic sensors of a composite seismic signal that is produced by the firings of multiple seismic sources. The technique includes modeling the seismic data as being a function of models for the sources and linear operators and defining desired constraints on the models. The technique includes simultaneously determining the models based on the modeling and the desired constraints. The datasets are generated based on the determined models. Each dataset is indicative of a component of the composite seismic signal and is attributable to a different one of the seismic sources. | 10-28-2010 |
| 20110141848 | Optimizing a Seismic Survey for Source Separation - A technique includes determining at least one parameter that characterizes a seismic survey in which multiple interfering seismic sources are fired and seismic sensors sense energy that is produced by the seismic sources. The determination of the parameter(s) includes optimizing the seismic survey for separation of the sensed energy according to the seismic sources. | 06-16-2011 |
| 20110158044 | METHOD AND APPARATUS FOR ACQUIRING WIDE-AZIMUTH MARINE DATA USING SIMULTANEOUS SHOOTING - A technique for acquiring wide azimuth seismic data using simultaneous shooting is presented in which a plurality of seismic sources are positioned to achieve a desired crossline sampling as a function of the number of passes. This is accomplished by “interleaving” sources as deployed in the spread, as positioned in multiple passes, or some combination of these things, to achieve an effective shotline interval during acquisition or an effective crossline sampling less than their crossline source separation. | 06-30-2011 |
