Determining well productivity for hydraulically fractured wells
AssigneeSaudi Arabian Oil Company
InventorsAbdallah A. AlShehri, Klemens Katterbauer
Life of this patent
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Abstract
Methods and systems for determining well productivity include acquiring measurement data from a plurality of in-situ sensors located within a hydraulically fractured subterranean formation; classifying the noise degree for sensors of the plurality based on the acquired measurement data; selecting sensors from the plurality by minimizing noise degree while maintaining coverage of the subterranean formation above a user defined threshold; extracting data from the selected sensors; and estimating fracture half-length and well productivity potential based on the extracted data.
Claims20
A method for determining well productivity, the method comprising:
- acquiring measurement data from a plurality of in-situ sensors located within fractures in a hydraulically fractured well in a subterranean formation;
- classifying a noise degree for sensors of the plurality, the noise degree representing a quality of the acquired measurement data from the sensors of the plurality;
- reducing effects of noise in the measurement data while maintaining coverage of the fractures above a threshold by selecting sensors from the plurality based on the noise degree classification and based on a physical distribution of the in-situ sensors in the fractures;
- extracting data from the selected sensors having the physical distribution and having the noise degree satisfying the threshold;
- and
- estimating fracture half-length and well productivity potential based on the extracted data.
A system for estimating well productivity, the system comprising:
- a plurality of in-situ sensors;
- a base station;
- at least one processor;
- and
- a memory storing instructions that when executed by the at least one processor cause the at least one processor to perform operations comprising:
- acquiring measurement data from the plurality of in-situ sensors located within fractures in a hydraulically fractured well in a subterranean formation;
- classifying a noise degree for sensors of the plurality, the noise degree representing a quality of the acquired measurement data from the sensors of the plurality;
- reducing effects of noise in the measurement data while maintaining coverage of the fractures above a threshold by selecting sensors from the plurality based on the noise degree classification and based on a physical distribution of the in-situ sensors in the fractures;
- extracting data from the selected sensors having the physical distribution and having the noise degree satisfying the threshold;
- and
- estimating fracture half-length and well productivity potential based on the extracted data.
One or more non-transitory machine-readable storage devices storing instructions for determining well productivity, the instructions being executable by one or more processing devices to cause performance of operations comprising:
- acquiring measurement data from a plurality of in-situ sensors located within fractures in a hydraulically fractured well in a subterranean formation;
- classifying a noise degree for sensors of the plurality, the noise degree representing a quality of the acquired measurement data from the sensors of the plurality;
- reducing effects of noise in the measurement data while maintaining coverage of the fractures above a threshold by selecting sensors from the plurality based on the noise degree classification and based on a physical distribution of the in-situ sensors in the fractures;
- extracting data from the selected sensors having the physical distribution and having the noise degree satisfying the threshold;
- and
- estimating fracture half-length and well productivity potential based on the extracted data.
Dependencies are inferred from the claim text.