Method and apparatus to detect a conductive body
AssigneeHalliburton Energy Services, Inc.
InventorsMichael S. Bittar, Jing Li
Life of this patent
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Abstract
Various embodiments include apparatus and methods to detect and locate conductive bodies and/or provide steam-assisted gravity drainage (SAGD) steering operation. Tools can be configured with receiving sensors (310) arranged to cancel substantially a primary signal associated with a probe signal without rotating the receiving sensors to cancel the primary signal and to capture a secondary signal generated from a conductive body (301) below the earth's surface. Additional apparatus, systems, and methods are disclosed.
Claims35
A method comprising:
- generating a probe signal from a transmitting sensor of a tool disposed below the earth's surface;
- receiving signals in receiving sensors of the tool in response to generating the probe signal, the receiving sensors arranged to substantially cancel a primary signal associated with the probe signal without rotating the receiving sensors to cancel the primary signal and to capture a secondary signal generated from a conductive body below the earth's surface;
- and
- processing the received signals to determine a position of the conductive body.
A machine-readable storage device having instructions stored thereon, which, when performed by a machine, cause the machine to perform operations, the operations comprising:
- generating a probe signal from a transmitting sensor of a tool disposed below the earth's surface;
- receiving signals in receiving sensors of the tool in response to generating the probe signal, the receiving sensors arranged to substantially cancel a primary signal associated with the probe signal without rotating the receiving sensors to cancel the primary signal and to capture a secondary signal generated from a conductive body below the earth's surface;
- and
- processing the received signals to determine a position of the conductive body.
A system comprising:
- a transmitter sensor and receiver sensors disposed on a structure, the receiver sensors arranged to substantially cancel a primary signal associated with a probe signal generated by the transmitter sensor without rotating the receiver sensors to cancel the primary signal and to capture a secondary signal generated from a conductive body below the earth's surface, the conductive body separate from the structure;
- a control unit operable to manage generation of the probe signal from the transmitter sensor and to manage collection of received signals at the receiver sensors;
- and
- a data processing unit to process the received signals to determine a position of the conductive body.
Dependencies are inferred from the claim text.