Determining a mudweight of drilling fluids for drilling through naturally fractured formations
AssigneeSaudi Arabian Oil Company
InventorsYanhui Han, Younane N. Abousleiman, Chao Liu, Shawn Rimassa
Life of this patent
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Abstract
The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for determining a mudweight of drilling fluids in a hydrocarbon reservoir. One computer-implemented method includes: receiving pore pressure data of a rock formation in the hydrocarbon reservoir; determining permeability data of fractures of the hydrocarbon reservoir; determining Hoek-Brown failure criterion data; and determining a safe mudweight window based on the pore pressure data of the rock formation, the permeability data of the fractures, and the Hoek-Brown failure criterion data.
Claims18
A computer-implemented method for determining a safe mudweight window of drilling fluids in a hydrocarbon reservoir, comprising:
- outputting, using a graphical user interface (GUI), a list of tasks, wherein the list of tasks include a mud weight window calculation task;
- receiving, by the GUI, a user selection of the mud weight window calculation task;
- in response to receiving the user selection, determining the safe mudweight window based on pore pressure data of a rock formation in the hydrocarbon reservoir, permeability data of fractures of the hydrocarbon reservoir, and a Hoek-Brown failure criterion parameter that is calculated based on a geological strength index and a disturbance factor of the rock formation;
- displaying, by the GUI, the determined safe mudweight window.
A non-transitory computer-readable medium storing instructions which, when executed, cause a computer to perform operations comprising:
- outputting, using a graphical user interface (GUI), a list of tasks, wherein the list of tasks include a mud weight window calculation task;
- receiving, by the GUI, a user selection of the mud weight window calculation task;
- in response to receiving the user selection, determining a safe mudweight window based on pore pressure data of a rock formation in the hydrocarbon reservoir, permeability data of fractures of a hydrocarbon reservoir, and a Hoek-Brown failure criterion parameter that is calculated based on a geological strength index and a disturbance factor of the rock formation;
- displaying, by the GUI, the determined safe mudweight window.
A device, comprising:
- at least one hardware processor;
- and
- a non-transitory computer-readable storage medium coupled to the at least one hardware processor and storing programming instructions for execution by the at least one hardware processor, wherein the programming instructions, when executed, cause the at least one hardware processor to perform operations comprising:
- outputting, using a graphical user interface (GUI), a list of tasks, wherein the list of tasks include a mud weight window calculation task;
- receiving, by the GUI, a user selection of the mud weight window calculation task;
- in response to receiving the user selection, determining a safe mudweight window based on pore pressure data of a rock formation in the hydrocarbon reservoir, permeability data of fractures of a hydrocarbon reservoir, and a Hoek-Brown failure criterion parameter that is calculated based on a geological strength index and a disturbance factor of the rock formation;
- displaying, by the GUI, the determined safe mudweight window.
Dependencies are inferred from the claim text.