Detecting and evaluating eccentricity effect in multiple pipes
AssigneeHalliburton Energy Services, Inc.
InventorsReza Khalaj Amineh, Burkay Donderici, Luis Emilio San Martin
Life of this patent
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Abstract
Apparatus and methods can be conducted in a multi-pipe structure to determine eccentricity of one or more pipes of the multi-pipe structure. A tool having a center axis as a symmetry axis of the tool can be used in which receivers are arranged as a number of pairs of receivers around the center axis of the tool. Each receiver of a pair can be disposed opposite the other receiver of the pair with respect to the center axis such that each pair is symmetrical with respect to the center axis of the tool. Eccentricity of one or more pipes of the multi-pipe structure can be determined based on the received responses at the receivers of the pairs.
Claims20
A method comprising:
- generating one or more signals from a transmitter of a tool disposed in a multi-pipe structure having a number of pipes such that the tool is within the pipes, the tool having a center axis as a symmetry axis of the tool;
- receiving responses at receivers of the tool from generating the one or more signals, the receivers arranged as a number of pairs of receivers around the center axis of the tool, each receiver of a pair disposed opposite the other receiver of the pair with respect to the center axis such that each pair is symmetrical with respect to the center axis of the tool, the number of pairs and arrangement of pairs distributed azimuthally around the tool such that each pair has an azimuthal angle;
- and
- determining eccentricity of one or more pipes of the multi-pipe structure based on the received responses at the receivers of the pairs.
A machine-readable storage device having instructions stored thereon, which, when executed by one or more processors of a machine, cause the machine to perform operations, the operations comprising:
- generating one or more signals from a transmitter of a tool disposed in a multi-pipe structure having a number of pipes such that the tool is within the pipes, the tool having a center axis as a symmetry axis of the tool;
- receiving responses at receivers of the tool from generating the one or more signals, the receivers arranged as a number of pairs of receivers around the center axis of the tool, each receiver of a pair disposed opposite the other receiver of the pair with respect to the center axis such that each pair is symmetrical with respect to the center axis of the tool, the number of pairs and arrangement of pairs distributed azimuthally around the tool such that each pair has an azimuthal angle;
- and
- determining eccentricity of one or more pipes of the multi-pipe structure based on the received responses at the receivers of the pairs.
A system comprising:
- a tool having a set of transmitters to transmit one or more electromagnetic signals in a multi-pipe structure, the multi-pipe structure having a number of pipes such that the tool is arrangeable within the pipes, the tool having a center axis as a symmetry axis of the tool;
- a set of receivers of the tool to receive responses in response to exciting pipes in the multi-pipe structure, the set of receivers arranged as a number of pairs of receivers around the center axis of the tool, each receiver of a pair disposed opposite the other receiver of the pair with respect to the center axis such that each pair is symmetrical with respect to the center axis of the tool, the number of pairs and arrangement of pairs distributed azimuthally around the tool such that each pair has an azimuthal angle;
- and
- control circuitry arranged to determine eccentricity of one or more pipes of the multi-pipe structure based on the received responses at the receivers of the pairs.
Dependencies are inferred from the claim text.