US 12,422,582 B2
Updating subsurface structural maps with well-measured orientation data while preserving local geological structures
Yue Ma, Beijing (CN); Xu Ji, Beijing (CN); and Nasher Muqbel Albinhassan, Beijing (CN)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Appl. No. 18/263,319
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
PCT Filed Feb. 3, 2023, PCT No. PCT/CN2023/074354
§ 371(c)(1), (2) Date Jul. 27, 2023,
PCT Pub. No. WO2024/159506, PCT Pub. Date Aug. 8, 2024.
Prior Publication US 2024/0427041 A1, Dec. 26, 2024
Int. Cl. E21B 49/00 (2006.01); E21B 41/00 (2006.01); G01V 1/30 (2006.01)
CPC G01V 1/302 (2013.01) [E21B 49/00 (2013.01); G01V 1/307 (2013.01); E21B 41/00 (2013.01); G01V 2210/61 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method comprising:
obtaining, using a seismic acquisition system, a seismic dataset regarding a subsurface region of interest;
obtaining, using a logging tool, a well log for each of a plurality of wellbores penetrating the subsurface region of interest;
determining a sequence of surfaces from the seismic dataset, wherein each surface among the sequence of surfaces represents a geological surface within the subsurface region of interest, wherein the sequence of surfaces is ordered by increasing depth within the subsurface region of interest; and
for each surface in order:
obtaining, using the logging tool, a partial well log for a partially-drilled wellbore within the subsurface region of interest,
associating a plurality of points to each surface,
determining seismic-estimated orientation data at the plurality of points based on the seismic dataset,
determining a plurality of intersection points among the plurality of points, wherein each of the plurality of intersection points represents where each of the plurality of wellbores and the partially-drilled wellbore intersects with the geological surface,
determining well-measured orientation data at the plurality of intersection points based on the well log for the plurality of wellbores and the partial well log,
generating an updated surface by determining a region of influence around each of the plurality of intersection points and updating the seismic-estimated orientation data at the plurality of points within the region of influence based on the well-measured orientation data,
determining, using a wellbore planning system, an updated wellbore trajectory for an undrilled portion of the partially-drilled wellbore based on the updated surface, and
drilling, using a drilling system, a portion of the undrilled portion of the partially drilled wellbore along the updated wellbore trajectory.