US 11,859,457 B2
Accessing lateral wellbores in a multilateral well
Feras Hamid Rowaihy, Dhahran (SA); Carl D. Lindahl, Dhahran (SA); Suresh Jacob, Dhahran (SA); and Ahmed A. Al Sulaiman, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Dec. 2, 2021, as Appl. No. 17/540,572.
Prior Publication US 2023/0175331 A1, Jun. 8, 2023
Int. Cl. E21B 23/03 (2006.01); E21B 41/00 (2006.01)
CPC E21B 23/03 (2013.01) [E21B 41/0035 (2013.01)] 30 Claims
OG exemplary drawing
 
23. A wellbore whipstock tool assembly, comprising:
a body that comprises:
an uphole axial surface that is slanted from one portion of an edge of the uphole axial surface to another portion of the edge of the uphole axial surface,
a downhole axial surface opposite the uphole axial surface, and
a radial surface between the uphole axial surface and the downhole axial surface;
one or more keys formed on the radial surface and configured to secure into one or more keyholes formed in a casing of a wellbore;
a bore that extends between an opening in the uphole axial surface and an opening in the downhole axial surface, the bore sized to receive a bottom hole assembly of an intervention tool; and
an adjustable entry tool configured to adjust between a closed position to pass into the bore and prevent passage of an intervention tool through the bore, and an open position, based on a signal from the terranean surface, to allow passage of the intervention tool through the bore while the entry tool is positioned in the bore.