Drilling parameter derivation workflow for autonomous directional drilling
AssigneeSchlumberger Technology Corporation
InventorsSi Jine Roh, Samba Ba
Life of this patent
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Abstract
A method for performing autonomous directional drilling includes receiving input data. The input data includes a planned trajectory of a wellbore including a target, a current position of a bottom of the wellbore, a plurality of drilling parameters, and a maximum dog leg severity (DLS) capability of a bottom hole assembly (BHA) drilling the wellbore. The method also includes determining an amount of DLS to reach the target from the current position of the bottom of the wellbore based upon the input data. The method also includes determining a modification to one or more of the drilling parameters based upon the amount of DLS to reach the target and the maximum DLS capability.
Claims18
A method for performing autonomous directional drilling, the method comprising:
- receiving input data, wherein the input data comprises:
- a planned trajectory of a wellbore including a target;
- a current position of a bottom of the wellbore;
- a plurality of drilling parameters;
- and
- a maximum dog leg severity (DLS) capability of a bottom hole assembly (BHA) drilling the wellbore;
- determining an amount of DLS to reach the target from the current position of the bottom of the wellbore based upon the input data;
- determining a modification to one or more of the drilling parameters based upon the amount of DLS to reach the target and the maximum DLS capability, wherein the modification is also based upon historical offset data from nearby wellbores having similar profiles, wherein the historical offset data comprises a comparison of maximum DLS capabilities of BHAs drilling the nearby wellbores with drilling parameters of the BHAs drilling the nearby wellbores, and wherein the maximum DLS capabilities of the BHAs drilling the nearby wellbores are defined by (1) a rate of penetration (ROP) of the BHAs drilling the nearby wellbores and (2) two numerical coefficients;
- and
- performing directional drilling with the BHA while implementing the modification.
A computing system, comprising:
- one or more processors;
- and
- a memory system comprising one or more non-transitory computer-readable media storing instructions that, when executed by at least one of the one or more processors, cause the computing system to perform operations, the operations comprising:
- receiving input data, wherein the input data comprises:
- a planned trajectory of a wellbore including a target;
- a current position of a bottom of the wellbore;
- a plurality of drilling parameters;
- and
- a maximum dog leg severity (DLS) capability of a bottom hole assembly (BHA) drilling the wellbore;
- determining an amount of DLS to reach the target from the current position of the bottom of the wellbore based upon the input data;
- determining a modification to one or more of the drilling parameters based upon the amount of DLS to reach the target and the maximum DLS capability, wherein the modification is also based upon historical offset data from nearby wellbores having similar profiles, wherein the historical offset data comprises a comparison of maximum DLS capabilities of BHAs drilling the nearby wellbores with drilling parameters of the BHAs drilling the nearby wellbores, and wherein the maximum DLS capabilities of the BHAs drilling the nearby wellbores are defined by a flow rate into the nearby wellbores, the flow rate squared, and three numerical coefficients;
- and
- causing the modification to be implemented while directional drilling is being performed with the BHA.
A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a computing system, cause the computing system to perform operations, the operations comprising:
- receiving input data, wherein the input data comprises:
- a planned trajectory of a wellbore including a target;
- a current position of a bottom of the wellbore;
- a plurality of drilling parameters;
- and
- a maximum dog leg severity (DLS) capability of a bottom hole assembly (BHA) drilling the wellbore;
- determining an amount of DLS to reach the target from the current position of the bottom of the wellbore based upon the input data;
- determining a modification to one or more of the drilling parameters based upon the amount of DLS to reach the target and the maximum DLS capability, wherein the modification is also based upon historical offset data from nearby wellbores having similar profiles, wherein the historical offset data comprises a comparison of maximum DLS capabilities of BHAs drilling the nearby wellbores with drilling parameters of the BHAs drilling the nearby wellbores, and wherein the maximum DLS capabilities of the BHAs drilling the nearby wellbores are defined by a number of rotations per minute (RPM) of the BHAs drilling the nearby wellbores and three numerical coefficients, and
- causing the modification to be implemented while directional drilling is being performed with the BHA.
Dependencies are inferred from the claim text.