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Class Information
Number: 324/303
Name: Electricity: measuring and testing > Particle precession resonance > Using well logging device
Description: Subject matter in which earth subsurface materials are subjected to magnetic resonance measurement by using a well logging device to transport the components of the testing system to the location to be tested.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7579833 |
Water mapping using surface NMR |
Aug. 25, 2009 |
| 7565833 |
Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis |
Jul. 28, 2009 |
| 7567079 |
Methods suitable for measuring capillary pressure and relative permeability curves of porous rocks |
Jul. 28, 2009 |
| 7564240 |
Method and apparatus for measuring free induction decay signal and its application to composition analysis |
Jul. 21, 2009 |
| 7541806 |
Method for molecule examination by NMR spectroscopy |
Jun. 2, 2009 |
| 7538547 |
Method and apparatus for integrating NMR data and conventional log data |
May. 26, 2009 |
| 7532007 |
Remote sensing nuclear magnetic resonance apparatus |
May. 12, 2009 |
| 7528600 |
System and method for downhole time-of-flight sensing, remote NMR detection of fluid flow in rock formations |
May. 5, 2009 |
| 7511487 |
Logging method for determining characteristic of fluid in a downhole measurement region |
Mar. 31, 2009 |
| 7511488 |
Viscosity determination from logarithmic mean ratio of relaxation times |
Mar. 31, 2009 |
| 7501818 |
System and methods for T1-based logging |
Mar. 10, 2009 |
| 7501817 |
Method and apparatus for generating an axisymmetric magnetic field |
Mar. 10, 2009 |
| 7495436 |
Rock properties prediction, categorization, and recognition from NMR echo-trains using linear and nonlinear regression |
Feb. 24, 2009 |
| 7486070 |
Devices, systems and methods for assessing porous media properties |
Feb. 3, 2009 |
| 7486071 |
Fluid monitoring arrangement |
Feb. 3, 2009 |
| 7463027 |
Systems and methods for deep-looking NMR logging |
Dec. 9, 2008 |
| 7459907 |
Flow measurement using NMR |
Dec. 2, 2008 |
| 7432711 |
Radial coil arrangement for a magnetic resonance apparatus |
Oct. 7, 2008 |
| 7425827 |
Method and apparatus for formation evaluation and borehole size determination |
Sep. 16, 2008 |
| 7423426 |
Selective excitation in earth's magnetic field nuclear magnetic resonance well logging tool |
Sep. 9, 2008 |
| 7420367 |
High-frequency induction imager with concentric coils for MWD and wireline applications |
Sep. 2, 2008 |
| 7417426 |
Compact and portable low-field pulsed NMR dispersion analyzer |
Aug. 26, 2008 |
| 7405563 |
Compensation of magnetic influence in a MWD system |
Jul. 29, 2008 |
| 7397240 |
Method of measuring rock wettability by means of nuclear magnetic resonance |
Jul. 8, 2008 |
| 7388373 |
Method of determining the permeability of an underground medium from NMR measurements of the permeability of rock fragments from the medium |
Jun. 17, 2008 |
| 7388374 |
Interpretation methods for NMR diffusion-T2 maps |
Jun. 17, 2008 |
| 7372263 |
Apparatus and method for measuring cased hole fluid flow with NMR |
May. 13, 2008 |
| 7372264 |
Contamination estimation using fluid analysis models |
May. 13, 2008 |
| 7368909 |
Downhole high resolution NMR spectroscopy with polarization enhancement |
May. 6, 2008 |
| 7363161 |
Pore-scale geometric models for interpretation of downhole formation evaluation data |
Apr. 22, 2008 |
| 7359845 |
Method and system for predictive stratigraphy images |
Apr. 15, 2008 |
| 7358725 |
Correction of NMR artifacts due to axial motion and spin-lattice relaxation |
Apr. 15, 2008 |
| 7352179 |
Methods and apparatus for measuring capillary pressure in a sample |
Apr. 1, 2008 |
| RE40167 |
Nuclear magnetic resonance fluid characterization apparatus and method for using with electric wireline formation testing instruments |
Mar. 25, 2008 |
| 7339374 |
Correction of NMR artifacts due to axial motion and spin-lattice relaxation |
Mar. 4, 2008 |
| 7336071 |
Enhancement of NMR vertical resolution using walsh function based inversion |
Feb. 26, 2008 |
| 7330575 |
Determination of subencoding MRI coil sensitivities in a lower order magnetic field |
Feb. 12, 2008 |
| 7309983 |
Method for determining characteristics of earth formations |
Dec. 18, 2007 |
| 7301338 |
Automatic adjustment of NMR pulse sequence to optimize SNR based on real time analysis |
Nov. 27, 2007 |
| 7301339 |
Estimating the concentration of a substance in a sample using NMR |
Nov. 27, 2007 |
| 7301337 |
Frequency dithering to avoid excitation pulse ringing |
Nov. 27, 2007 |
| 7298142 |
Method and apparatus for reservoir fluid characterization in nuclear magnetic resonance logging |
Nov. 20, 2007 |
| 7295005 |
Azimuthal NMR imaging while drilling |
Nov. 13, 2007 |
| 7282704 |
Method for determining formation porosity and gas saturation in a gas reservoir |
Oct. 16, 2007 |
| 7268547 |
Correction of motion influences in NMR signals |
Sep. 11, 2007 |
| 7268552 |
Capillary toroid cavity detector for high pressure NMR |
Sep. 11, 2007 |
| 7253618 |
Method for determining more accurate diffusion coefficient distributions of reservoir fluids using Bi-polar pulsed field gradients |
Aug. 7, 2007 |
| 7253617 |
Method and apparatus for characterizing heavy oil components in petroleum reservoirs |
Aug. 7, 2007 |
| 7235970 |
Antenna core material for use in MWD resistivity measurements and NMR measurements |
Jun. 26, 2007 |
| 7227355 |
Method of detecting, quantifying and correcting borehole contaminations from multi-frequency, multi-sensitive-volume NMR logging data |
Jun. 5, 2007 |
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