Well integrity management for natural flow oil wells

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations 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 from 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 wellness surface parameters and the wellness downhole parameters, an integrated surface-downhole integrity score;
• and
• 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.

A computer-implemented system, comprising:

• one or more processors;
• and
• a non-transitory computer-readable storage medium coupled to the one or more processors and storing programming instructions for execution by the one or more processors, the programming instructions instructing the one or more processors to perform operations 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 from 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 wellness surface parameters and the wellness downhole parameters, an integrated surface-downhole integrity score;
• and
• 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.