US 12,305,480 B2
Producing gas through variable bore production tubing
Bryan Hall-Thompson, Dhahran (SA); Oladele Owoeye, Dhahran (SA); Abdulrahman Nutaifi, Dhahran (SA); Olaoluwa S. Salako, Dhahran (SA); and Ghadeer A. Alrumaih, Saihat (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on May 31, 2022, as Appl. No. 17/804,764.
Prior Publication US 2023/0383621 A1, Nov. 30, 2023
Int. Cl. E21B 34/12 (2006.01); E21B 17/02 (2006.01)
CPC E21B 34/12 (2013.01) [E21B 17/02 (2013.01)] 19 Claims
OG exemplary drawing
 
8. A method comprising:
designing an uphole section of a production tubing string based on a combination of hydrate and erosion tendencies within a well in which the production tubing string is to be installed, the uphole section having a first diameter;
designing a midhole section of the production tubing string based on optimal production rate and installation requires of the well;
designing a downhole section of the production tubing string based on mechanical strength of the well;
fabricating the production string having the designed uphole section, the designed midhole section and the designed downhole section;
producing gas through the production tubing string, the production tubing string comprising:
the uphole section having the first diameter;
the midhole section having a second diameter that is larger than the first diameter; and
the downhole section having a third diameter that is smaller than the second diameter.