US 11,852,384 B2
Method for configuring wellbores in a geologic formation
Matthew Toews, Calgary (CA); Paul Cairns, Calgary (CA); Derek Riddell, Calgary (CA); Andrew Curtis-Smith, Calgary (CA); and Jonathan Hale, Calgary (CA)
Assigned to Eavor Technologies Inc.
Filed by EAVOR TECHNOLOGIES INC., Calgary (CA)
Filed on Jul. 15, 2020, as Appl. No. 16/929,284.
Claims priority of application No. CA 3085901 (CA), filed on Jul. 6, 2020.
Prior Publication US 2022/0003459 A1, Jan. 6, 2022
Int. Cl. F24T 10/20 (2018.01); E21B 47/0228 (2012.01); E21B 7/04 (2006.01); E21B 33/138 (2006.01); E21B 36/00 (2006.01); E21B 43/30 (2006.01)
CPC F24T 10/20 (2018.05) [E21B 7/04 (2013.01); E21B 33/138 (2013.01); E21B 36/001 (2013.01); E21B 43/305 (2013.01); E21B 47/0228 (2020.05)] 21 Claims
OG exemplary drawing
 
1. A method for configuring wellbores in a thermally productive geologic formation, the method comprising:
drilling in said formation an inlet wellbore and an outlet wellbore adjacent the inlet wellbore;
drilling a first interconnecting wellbore segment and a second interconnecting wellbore segment between said inlet wellbore and said outlet wellbore to form a continuous geothermal recovery well, said interconnecting segments having a predetermined angular configuration relative to said inlet wellbore and said outlet wellbore within said formation, wherein drilling said first interconnecting segment comprises drilling from a downhole end of said inlet wellbore a first lateral wellbore and drilling said second interconnecting segment comprises drilling from a downhole end of said outlet wellbore a second lateral wellbore, the first and second lateral wellbores drilled to extend alongside one another and at least one of the lateral wellbores sloping to intersect a sidewall of the other at a junction, said second lateral wellbore disposed at a depth greater than a depth of said first lateral wellbore; and
conditioning at least said interconnecting segments by sealing the segments to facilitate thermal recovery by working fluid flow therethrough, said interconnecting segments being at least partially open hole.