US 12,110,780 B2
Method and apparatus for magnetic ranging while drilling
Clinton Moss, Spring, TX (US)
Assigned to Gunnar LLLP, Spring, TX (US)
Filed by Gunnar LLLP, Spring, TX (US)
Filed on Aug. 28, 2023, as Appl. No. 18/457,139.
Application 18/457,139 is a continuation of application No. 17/482,045, filed on Sep. 22, 2021, granted, now 11,781,421, issued on Oct. 10, 2023.
Claims priority of provisional application 63/216,861, filed on Jun. 30, 2021.
Claims priority of provisional application 63/081,692, filed on Sep. 22, 2020.
Prior Publication US 2024/0003243 A1, Jan. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 47/0228 (2012.01); E21B 7/04 (2006.01); E21B 17/00 (2006.01); E21B 44/00 (2006.01); E21B 47/00 (2012.01); G01D 5/14 (2006.01)
CPC E21B 47/0228 (2020.05) [E21B 7/04 (2013.01); E21B 17/00 (2013.01); E21B 44/00 (2013.01); E21B 47/00 (2013.01); G01D 5/14 (2013.01)] 22 Claims
OG exemplary drawing
 
19. A method of magnetic ranging comprising:
installing a sensor that senses a magnetic ranging signal in a wellbore;
installing a first electrically insulative gap sub in a wellbore;
installing at least one section of drill pipe in a wellbore that is connected to the electrically insulative gap sub;
connecting a power supply to at least one section of drill pipe using at least one wire that is located inside the at least one section of drill pipet, wherein the connection from the at least one wire to the at least one section of drill pipe is made at surface and is a rigid connection;
energizing the power supply to cause current to flow down the drill pipe and inject into a wellbore formation and travel to a target well to create a magnetic ranging signal;
sampling the magnetic ranging signal; and
adjusting the drilling operations to alter a characteristic of the drilling operations.