US 11,725,485 B2
Concentric tubing strings and/or stacked control valves for multilateral well system control
David Joe Steele, Carrollton, TX (US); and Justin Mark Roberts, Calgary (CA)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Apr. 7, 2021, as Appl. No. 17/224,792.
Claims priority of provisional application 63/006,557, filed on Apr. 7, 2020.
Prior Publication US 2021/0310336 A1, Oct. 7, 2021
Int. Cl. E21B 41/00 (2006.01); E21B 34/16 (2006.01); E21B 34/08 (2006.01)
CPC E21B 41/0035 (2013.01) [E21B 34/08 (2013.01); E21B 34/16 (2013.01)] 27 Claims
OG exemplary drawing
 
27. A method for production from a multilateral well system, comprising:
forming a first wellbore within a subterranean formation, a second lateral wellbore extending from the first wellbore, and a third lateral wellbore extending from the first wellbore uphole of the second lateral wellbore;
positioning a completion string within the first wellbore and above a junction between the first wellbore and the third lateral wellbore, the completion string including:
a first tubing string, the first tubing string defining a first fluid path operable to receive a first fluid obtained from a first wellbore;
a second tubing string positioned about the first tubing string, the first tubing string and the second tubing string creating an inner annulus that defines a second fluid path operable to receive a second fluid obtained from a second lateral wellbore; and
a third tubing string positioned about the second tubing string, the second tubing string and the third tubing string defining an outer annulus that defines a third fluid path operable to receive a third fluid obtained from a third lateral wellbore, wherein the completion string further includes a first flow control device associated with the first fluid path and configured to regulate the first fluid, a second flow control device associated with the second fluid path and configured to regulate the second fluid, and a third flow control device associated with the third fluid path and configured to regulate the third fluid; and
producing the first fluid through the first tubing string, the second fluid through the second tubing string and the third string through the third tubing string, wherein producing the first fluid through the first tubing includes passing the first fluid through the first fluid control device and into a first combined fluid path, producing the second fluid through the second tubing includes passing the second fluid through the second fluid control device and into a second combined fluid path, the second combined fluid path also including the first fluid, and producing the third fluid through the third tubing includes passing the third fluid through the third fluid control device and into a third combined fluid path, the third combined fluid path also including the first fluid and the second fluid.