公开(公告)号：US12104489B2

公开(公告)日：2024-10-01

申请号：US17619784

申请日：2020-02-10

Applicant: Landmark Graphics Corporation

Inventor： Raja Vikram Raj Pandya ,  Srinath Madasu ,  Keshava Prasad Rangarajan ,  Shashi Dande ,  Yashas Malur Saidutta

IPC: E21B7/04 ,  E21B44/02

CPC classification number: E21B7/04 ,  E21B44/02

Abstract: Geosteering can be used in a drilling operation to create a wellbore that is used to extract hydrocarbons from a defined zone within the subterranean formation. According to some aspects, generating paths for the wellbore may include using path-planning protocols and pure-pursuit protocols. The pure-pursuit protocol may be executed to output a plurality of candidate drilling paths. The output may also include control parameters for controlling the drill bit. A trajectory optimizer may determine a result of multi-objective functions for each candidate path. A cost function may represent a cost or loss associated with a candidate path. Additionally, the trajectory optimizer may perform an optimization protocol, such as Bayesian optimization, on the cost functions to determine which candidate path to select. The selected candidate path may correspond to new control parameters for controlling the drill bit to reach the target location.

公开(公告)号：US20220316278A1

公开(公告)日：2022-10-06

申请号：US17619784

申请日：2020-02-10

Applicant: Landmark Graphics Corporation

Inventor： Raja Vikram Raj Pandya ,  Srinath Madasu ,  Keshava Prasad Rangarajan ,  Shashi Dande ,  Yashas Malur Saidutta

IPC: E21B7/04

Abstract: Geosteering can be used in a drilling operation to create a wellbore that is used to extract hydrocarbons from a defined zone within the subterranean formation. According to some aspects, generating paths for the wellbore may include using path-planning protocols and pure-pursuit protocols. The pure-pursuit protocol may be executed to output a plurality of candidate drilling paths. The output may also include control parameters for controlling the drill bit. A trajectory optimizer may determine a result of multi-objective functions for each candidate path. A cost function may represent a cost or loss associated with a candidate path. Additionally, the trajectory optimizer may perform an optimization protocol, such as Bayesian optimization, on the cost functions to determine which candidate path to select. The selected candidate path may correspond to new control parameters for controlling the drill bit to reach the target location.