Nucleur magnetic resonance system with feedback induction coils
AssigneeSchlumberger Technology Corporation
InventorsYi-Qiao Song, Michael Wilt, Pabitra Sen
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Abstract
A nuclear magnetic resonance (NMR) system that uses a feedback induction coil to detect NMR signals generated within a substance is described herein. In one embodiment, the NMR system uses the Earth's magnetic field in conjunction with a transmitter coil that applies NMR sequences to a formation. The NMR sequences generate a weak NMR signal within the formation due to the weakness of the Earth's magnetic field. This weak NMR signal is detected using the feedback induction coil.
Claims20
A nuclear magnetic resonance (NMR) system, the system comprising:
- a feedback induction coil configured to detect NMR signals generated within a substance.
A method for analyzing a substance using nuclear magnetic resonance (NMR), the method comprising:
- applying an NMR pulse sequence to the substance;
- detecting NMR signals generated by the NMR pulse sequence using a feedback induction coil.
A wellbore tool comprising:
- a transmitter coil configured to apply a nuclear magnetic resonance (NMR) sequence to a substance;
- and
- a feedback induction coil configured to detect NMR signals generated within the sub stance.
Dependencies are inferred from the claim text.