Apparatus and methods to find a position in an underground formation
AssigneeHalliburton Energy Services, Inc.
InventorsLuis Emilio San Martin, Baris Guner, Burkay Donderici
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Abstract
Various embodiments include apparatus and methods related to finding a position in an underground formation. Apparatus and methods can include receiving signals from a receiver in an underground formation in response to signals generated from transmitting sources, each of the transmitting sources located at a known position; and processing the received signals, based on the signals generated from the transmitting sources, to determine the position of the receiver. A number of techniques can be applied to processing the received signal. Additional apparatus, systems, and methods are disclosed.
Claims58
A method comprising:
- receiving signals from a receiver in an underground formation in response to signals generated from three or more transmitting sources, each of the three or more transmitting sources located at a known position, at least one transmitting source of the three or more transmitting sources separated from and mounted on a structure different from at least one other transmitting source of the three or more transmitting sources;
- and
- processing the received signals, using an inversion process based on the signals generated from the three or more transmitting sources, to determine a position and an orientation of the receiver;
- wherein the inversion process comprises adjusting any values of a set of guessed position values and a set of guessed orientation values at any of a plurality of iterations during the inversion process to determine the position and the orientation of the receiver.
A machine-readable storage device having instructions stored thereon, which, when performed by a machine, cause the machine to perform operations to:
- receive signals from a receiver in an underground formation in response to signals generated from three or more transmitting sources, each of the three or more transmitting sources located at a known position, at least one transmitting source of the three or more transmitting sources separated from and mounted on a structure different from at least one other transmitting source of the three or more transmitting sources;
- and
- process the received signals, using an inversion process based on the signals generated from the three or more transmitting sources, to determine a position and an orientation of the receiver;
- wherein the inversion process comprises adjusting any values of a set of guessed position values and a set of guessed orientation values at any of a plurality of iterations during the inversion process to determine the position and the orientation of the receiver.
A system comprising:
- three or more transmitting sources, each of the sources located at a known position, at least one transmitting source of the three or more transmitting sources separated from and mounted on a structure different from at least one other transmitting source of the three or more transmitting sources;
- a control unit arranged to control generation of signals from the three or more transmitting sources;
- a receiver in an underground formation, the receiver operable to receive signals in response to the generation from the three or more transmitting sources;
- and
- a processing unit arranged to process the received signals, using an inversion process based on the signals generated from the three or more transmitting sources, to determine a position and an orientation of the receiver;
- wherein the inversion process comprises adjusting any values of a set of guessed position values and a set of guessed orientation values at any of a plurality of iterations during the inversion process to determine the position and the orientation of the receiver.
Dependencies are inferred from the claim text.