US 12,006,816 B2
Well integrity management for natural flow oil wells
Abdullah M. Al-Dhafeeri, Al Khobar (SA); and Shebl Fouad Abo Zkry, Al Khafji (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jan. 14, 2022, as Appl. No. 17/648,050.
Prior Publication US 2023/0228186 A1, Jul. 20, 2023
Int. Cl. E21B 33/03 (2006.01); E21B 34/02 (2006.01); E21B 47/06 (2012.01); E21B 47/117 (2012.01); E21B 49/08 (2006.01)
CPC E21B 47/117 (2020.05) [E21B 33/03 (2013.01); E21B 34/02 (2013.01); E21B 47/06 (2013.01); E21B 49/087 (2013.01); E21B 2200/20 (2020.05); E21B 2200/22 (2020.05)] 17 Claims
OG exemplary drawing
 
1. A computer-implemented method, comprising:
determining, from first data received from one or more surface pressure sensors, values of wellness surface parameters of a natural flow oil well indicating a casing pressure over a period of time near at least one surface valve of the oil well;
determining, from second data received one or more downhole sensors, values of wellness downhole parameters for the natural flow oil well, including parameters indicating a presence or absence of leaks and a condition of cementing in well casing;
determining, using the values of the wellness surface parameters and the values of the wellness downhole parameters, an integrated surface-downhole integrity score;
providing, for presentation to an operator in a user interface, an alert in response to the integrated surface-downhole integrity score exceeding a threshold, the alert indicating that the oil well is operable or non-operable;
in response to the alert indicating that the oil well is operable, generating a first instruction causing operation of the oil well to continue or to resume; and
in response to the alert indicating that the oil well is non-operable, generating a second instruction causing operation of the oil well to shut down.