Sourceless density determination apparatus, methods, and systems
AssigneeHalliburton Energy Services, Inc.
InventorsBatakrishna Mandal, Arthur Cheng, Nigel Clegg, Jennifer Anne Market
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Abstract
In some embodiments, an apparatus and a system, as well as a method and an article, may operate to determine a compressional velocity (CV) of a geological formation, to determine a reflection coefficient (RC) associated with the geological formation, and to determine a density of the geological formation based on the CV and the RC. The CV and RC may be determined from values associated with sonic and ultrasonic velocity measurements. Additional apparatus, systems, and methods are described.
Claims20
A system, comprising:
- a housing;
- sonic sensors attached to the housing;
- ultrasonic sensors attached to the housing;
- a processor;
- and
- a machine-accessible medium comprising program instructions executable by the processor to cause the system to determine a compressional velocity (CV) of a geological formation based on sonic signals measured by the sonic sensors, determine a reflection coefficient (RC) associated with the geological formation based on ultrasonic signals measured by the ultrasonic sensors, and determine the density of the geological formation based on the CV and the RC.
A method comprising:
- determining a compressional velocity (CV) of a geological formation based on sonic signals measured by one or more sonic sensors attached to a down hole tool;
- determining a reflection coefficient (RC) associated with the geological formation based on ultrasonic signals measured by one or more ultrasonic sensors attached to the down hole tool;
- and
- determining a density of the geological formation based on the CV and the RC.
A machine-accessible medium having instructions stored therein, wherein the instructions are executable to cause a machine to:
- determine a compressional velocity (CV) of a geological formation based on sonic signals measured by one or more sonic sensors attached to a down hole tool;
- determine a reflection coefficient (RC) associated with the geological formation based on ultrasonic signals measured by one or more ultrasonic sensors attached to the down hole tool;
- and
- determine a density of the geological formation based on the CV and the RC.
Dependencies are inferred from the claim text.