US 12,241,363 B2
Steerability of downhole ranging tools using rotary magnets
Pete L. Schiermeier, Houston, TX (US); and Sean Hinke, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Mar. 2, 2022, as Appl. No. 17/653,198.
Claims priority of provisional application 63/244,414, filed on Sep. 15, 2021.
Prior Publication US 2023/0088047 A1, Mar. 23, 2023
Int. Cl. E21B 47/0228 (2012.01); E21B 7/06 (2006.01); E21B 47/092 (2012.01); G01V 3/26 (2006.01)
CPC E21B 47/0228 (2020.05) [E21B 7/06 (2013.01); E21B 7/067 (2013.01); E21B 47/092 (2020.05); G01V 3/26 (2013.01)] 20 Claims
OG exemplary drawing
 
11. A downhole ranging method, comprising:
generating, by way of two or more ranging magnets positioned along a tubular string in a first wellbore, one or more magnetic fields;
measuring the one or more magnetic fields using one or more sensors in a second wellbore; and
determining, from the measuring of the one or more magnetic fields, distance of the first wellbore relative to the second wellbore, wherein:
one or more of the ranging magnets are located between a drill bit box and push pads of a drive system;
at least one frequency of the one or more magnetic fields is based on rotation of the tubular string in combination with rotation of the drive system.