US 12,312,933 B2
Approaches to directional drilling
Samba Ba, Beijing (CN); Lu Jiang, Beijing (CN); Adrien Chassard, Houston, TX (US); Magnus Hedlund, Houston, TX (US); Maja Ignova, Stonehouse (GB); Katharine Mantle, Stonehouse (GB); Jinsoo Kim, Houston, TX (US); Tao Yu, Beijing (CN); Farid Toghi, Beijing (CN); Hendrik Suryadi, Beijing (CN); Qing Liu, Beijing (CN); and Diego Medina, Beijing (CN)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Mar. 3, 2022, as Appl. No. 17/653,404.
Claims priority of provisional application 63/280,058, filed on Nov. 16, 2021.
Claims priority of provisional application 63/200,380, filed on Mar. 3, 2021.
Claims priority of provisional application 63/200,376, filed on Mar. 3, 2021.
Prior Publication US 2022/0290550 A1, Sep. 15, 2022
Int. Cl. E21B 44/00 (2006.01); E21B 7/06 (2006.01); E21B 47/022 (2012.01)
CPC E21B 44/00 (2013.01) [E21B 7/068 (2013.01); E21B 47/022 (2013.01); E21B 2200/20 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving a planned trajectory for a bottom hole assembly of a drillstring to reach a final target from a surface, wherein the planned trajectory includes one or more possible targets on a path to the final target; and
during drilling of the planned trajectory with the bottom hole assembly:
receiving data for the bottom hole assembly associated with the bottom hole assembly implementing the planned trajectory;
based on the data, determining that a hole bottom position of the bottom hole assembly has deviated from the planned trajectory;
generating a set of candidate trajectories for the bottom hole assembly to return to the planned trajectory using at least a portion of the data, wherein each candidate trajectory of the set of candidate trajectories is aimed at a respective one of the one or more possible targets on the path to the final target, wherein the set of candidate trajectories includes one or more first candidate trajectories configured to return the bottom hole assembly to the planned trajectory at a target A of the one or more possible targets on the path to the final target and one or more second candidate trajectories configured to return the bottom hole assembly to the planned trajectory at a target B of the one or more possible targets on the path to the final target, and wherein the target B is at a different position on the path to the final target than the target A;
generating a drill command schedule for each candidate trajectory of the set of candidate trajectories, wherein the drill command schedules provide hardware specific drill command sequences for respective candidate trajectories of the set of candidate trajectories;
ranking each candidate trajectory of the set of candidate trajectories based on a cost for each candidate trajectory to reach its respective possible target on the path to the final target, wherein the cost for each candidate trajectory is based on a plurality of weighted steering properties and a plurality of weighted steering violations for each candidate trajectory;
identifying a top ranked candidate trajectory based on its associated cost;
outputting at least the top ranked candidate trajectory and its corresponding drill command schedule;
appending the top ranked candidate trajectory to the planned trajectory at the hole bottom position to generate an appended planned trajectory; and
communicating the hardware specific drill command sequences of the drill command schedule for the top ranked candidate trajectory to control the bottom hole assembly of the drillstring to access the final target from the hole bottom position via the appended planned trajectory.