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US 9,052,412 B2Granted
Determining an orientation angle of a survey sensor
AssigneeWesternGeco L.L.C.
InventorsAhmet Kemal Ozdemir, Nicolas Goujon, Oeyvind Teigen, Kenneth E. Welker
Life of this patent
Estimating the term…
Abstract
Measurement data acquired by at least one sensor in a cable structure towed through a body of water is received. A torsional vibration noise component in the measurement data is estimated. The torsional vibration noise component is used to estimate a rotation angle of the at least one survey sensor with respect to a reference coordinate system of the cable structure.
Claims19
A method comprising:
- determining, by a system comprising a processor, a first orientation angle component of an orientation angle relating to angular rotation of a sensor with respect to a reference coordinate system;
- determining, by the system, a second orientation angle component of the orientation angle based on estimating torsional vibrational noise in measurement data, wherein the second orientation angle component varies at a higher rate than the first orientation angle component;
- and
- aggregating, by the system, the first and second orientation angle components to provide the orientation angle.
1 more element
A system comprising:
- a storage medium to store measurement data acquired by at least one sensor in a subterranean survey operation, wherein the at least one sensor is in a cable structure for towing through a body of water;
- at least one processor to:
- determine a first orientation angle component of an orientation angle relating to angular rotation of the at least one sensor with respect to a reference coordinate system;
- determine a second orientation angle component of the orientation angle based on estimating torsional vibrational noise in the measurement data, wherein the second orientation angle component varies over time at a higher rate than the first orientation angle component;
- and
- aggregate the first and second orientation angle components to provide the orientation angle.
3 more elements
An article comprising at least one non-transitory machine-readable storage medium storing instructions that upon execution cause a system to:
- receive measurement data acquired by at least one sensor in a cable structure towed through a body of water;
- determine a first orientation angle component of an orientation angle relating to angular rotation of the at least one sensor with respect to a reference coordinate system;
- determine a second orientation angle component of the orientation angle based on estimating torsional vibrational noise in the measurement data, wherein the second orientation angle component varies at a higher rate over time than the first orientation angle component;
- and
- aggregate the first and second orientation angle components to provide the orientation angle.
2 more elements
Dependencies are inferred from the claim text.