Patent application number | Description | Published |
20090005994 | Time Lapse Analysis with Electromagnetic Data - Method for determining time-dependent changes [ | 01-01-2009 |
20090096457 | Method for determining earth vertical electrical anisotropy in marine electromagnetic surveys - A method is disclosed for determining earth vertical electrical anisotropy from offshore electromagnetic survey measurements. The method requires both online and offline data, which includes at least one electromagnetic field component sensitive at least predominantly to vertical resistivity and another component sensitive at least predominantly to horizontal resistivity. Using a horizontal electric dipole source, online E | 04-16-2009 |
20090121720 | Method for controlled source electromagnetic reconnaissance surveying - Method for conducting an efficient and interpretable controlled-source electromagnetic reconnaissance survey for buried hydrocarbons. While a part of the survey area is being set up for measurement and data are being acquired, data from a nearby part of the survey area, surveyed just previously, are being rapidly processed and analyzed ( | 05-14-2009 |
20100065266 | Method for Controlled Source Electromagnetic Reconnaissance Surveying - Method for conducting an efficient and interpretable controlled-source electromagnetic reconnaissance survey for buried hydrocarbons. While a part of the survey area is being set up for measurement and data are being acquired, data from a nearby part of the survey area, surveyed just previously, are being rapidly processed and analyzed. If the analysis shows resistive anomalies of interest in a portion of a survey area, a fine-grid survey is quickly designed for that portion, and that survey is conducted next before moving source and receivers to a more distant part of the survey area. | 03-18-2010 |
20100233955 | METHOD FOR ELECTROMAGNETIC AIR-WAVE SUPPRESSION BY ACTIVE CANCELLATION AND SHIELDING - Method for reducing air wave and/or magnetotelluric noise in controlled source electromagnetic surveying by either shielding the source ( | 09-16-2010 |
20100332198 | Method For Obtaining Resistivity From Controlled Source Electromagnetic Data - Method for generating a three-dimensional resistivity data volume for a subsurface region from an initial resistivity model and measured electromagnetic field data from an electromagnetic survey of the region, where the initial resistivity model is preferably obtained by performing multiple ID inversions of the measured data [ | 12-30-2010 |
20110108283 | Method For Remote Identification And Characterization of Hydrocarbon Source Rocks Using Seismic and Electromagnetic Geophysical Data - Method for assessing hydrocarbon source rock potential of a subsurface region without well log information. The method uses surface electromagnetic ( | 05-12-2011 |
20110166840 | Systems and Methods For Subsurface Electromagnetic Mapping - Systems and methods which provide electromagnetic subsurface mapping to derive information with respect to subsurface features whose sizes are near to or below the resolution of electromagnetic data characterizing the subsurface are shown. Embodiments operate to identify a region of interest ( | 07-07-2011 |
20110181279 | Method And Apparatus For Detection of A Liquid Under A Surface - Methods for detecting a liquid under a surface and characterizing Ice are provided The liquid may be a liquid hydrocarbon such as crude oil or fuel oil or mineral oil The surface may be ice, snow, or water, and the method may be practiced in an arctic region to detect oil spills, leaks, or seepages The methods may be used with a range finder to characterize marine ice The methods may include a nuclear magnetic resonance (NMR) tool with antenna to send a radio-frequency (RF) excitation pulse or signal into volume of substances being detected, detect an NMR response signal to determine the presence of the liquid of interest The NMR response may include a relaxation time element and an intensity level and may include a free induction signal (T2*), a spin echo signal (T2), a train of spin echo signals (T2), or a thermal equilibrium signal (T 1). | 07-28-2011 |
20130037707 | MEASUREMENT OF ISOTOPE RATIOS IN COMPLEX MATRICES - The present techniques are directed to a method for microprobe analyses of isotope ratios in inhomogeneous matrices. The method includes selecting matrix standards that have matrices that resemble a target matrix. A bulk isotope analysis is run on each of the matrix standards to determine a bulk isotope ratio value. A microprobe analysis is run on each of the matrix standards to determine a microprobe isotope ratio values for each of the plurality of matrix standards. Spurious values are eliminated from the microprobe isotope ratio values. The microprobe isotope ratio values are averaged for each of the matrix standards to create an average microprobe isotope ratio value associated with each of the matrix standards. The bulk isotope ratio value for each of matrix standards is plotted against the average microprobe isotope ratio value associated with each of the matrix standards to create a matrix corrected calibration curve. | 02-14-2013 |
20140256055 | EXPLORATION METHOD AND SYSTEM FOR DETECTION OF HYDROCARBONS - A method for detecting hydrocarbons is described. The method includes performing a remote sensing survey of a survey location to identify a target location. Then, an underwater vehicle (UV) is deployed into a body of water and directed to the target location. The UV collects measurement data within the body of water at the target location, which is then analyzed to determine whether hydrocarbons are present at the target location. | 09-11-2014 |
20140284465 | EXPLORATION METHOD AND SYSTEM FOR DETECTION OF HYDROCARBONS WITH AN UNDERWATER VEHICLE - A method for detecting hydrocarbons with an underwater vehicle equipped with one or more measurement components is described. The method includes navigating the UV within the body of water; monitoring the body of water with measurement components associated with the UV to collect measurement data. The collected data from the UV is used to determine whether hydrocarbons are present and at the location. | 09-25-2014 |