US 12,140,024 B2
Non-magnetic openhole whipstock
Ahmed M. Al Rubaya, Al Khobar (SA); and Atallah N. Alharbi, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Feb. 22, 2023, as Appl. No. 18/112,633.
Prior Publication US 2024/0279989 A1, Aug. 22, 2024
Int. Cl. E21B 7/06 (2006.01); E21B 33/12 (2006.01); E21B 33/13 (2006.01); E21B 47/09 (2012.01)
CPC E21B 7/061 (2013.01) [E21B 33/12 (2013.01); E21B 33/13 (2013.01); E21B 47/09 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
coupling a stinger pipe to an orientation sub positioned in a wellbore formed in a subterranean formation, wherein the orientation sub is coupled to a non-magnetic whipstock configured to rotate with the orientation sub, the non-magnetic whipstock comprising a ramp defining a plurality of ports;
coupling a gyroscopic orientation tool to the orientation sub, the gyroscopic orientation tool configured to detect an orientation of the orientation sub in the wellbore;
rotating the orientation sub to match a specified orientation specified by the gyroscopic orientation tool;
removing the gyroscopic orientation tool from the orientation sub;
flowing cement through the stinger pipe and through the orientation sub to the non-magnetic whipstock;
reciprocating the non-magnetic whipstock, thereby facilitating the cement to permeate through the non-magnetic whipstock via the plurality of ports;
rotating a drill bit through the orientation sub;
after rotating the drill bit through the orientation sub, directing the drill bit through the cement and against the sloped surface of the ramp of the non-magnetic whipstock, thereby diverting a direction of the drill bit; and
after diverting the direction of the drill bit, rotating the drill bit into the subterranean formation to sidetrack from the wellbore and form a secondary wellbore in the subterranean formation.