Frequency based rig analysis
AssigneeExebenus AS
InventorsTimothy Sadettin ROBINSON, Olav REVHEIM
Life of this patent
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Abstract
The invention describes a method and a system for transforming time series data into the frequency domain and analyzing these signals to recognize rig states and events during drilling and completion operations, as well as a methodology for using the identified events and rig states in measuring operational performance, improving situational awareness, and/or as input to models optimizing the operation.
Claims19
A method for recognizing rig states in oilfield drilling and completion operations comprising:
- receiving time series of individual sensor data from real time data system located on a drilling rig;
- transforming the data series into a frequency domain representation using Fourier transforms;
- processing the frequency domain representations by aggregating them into discrete frequency bins;
- applying a detection method to the processed frequency domain representations, wherein the detection method comprises a discriminative system based on processed spectral features;
- and
- identifying a rig state selected from a group consisting of rig heave and downlinking from analysis of the frequency domain data representations.
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A system for recognizing rig states in oilfield drilling and completion operations, the system consisting of:
- a processor;
- a memory coupled to the processor, wherein the memory stores instructions that, when executed by the processor, cause the system to:
- receive time series of individual sensor data from a real time data system located on a drilling rig;
- transform the data series into a frequency domain representation using Fourier transforms;
- process the frequency domain representations by aggregating them into discrete frequency bins;
- apply a detection method to the processed frequency domain representations, wherein the detection method comprises a discriminative system based on processed spectral features;
- and
- identify a specific rig state selected from a group consisting of rig heave and downlinking from analysis of the frequency domain data representations;
- and
- a display device that presents output of the identified rig state to a user.
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Dependencies are inferred from the claim text.