Performing continuous daily production allocation

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system and implemented using one or more computers to perform operations comprising:

• receiving, by the one or more computers, wellstream values and gas plant parameters from a plant information (PI) server, including receiving a flowrate of a Venturi meter;
• determining, using the one or more computers, a choke/pressure control valve (PCV) gas rate for each well of a group of producing wells;
• determining, using the one or more computers, a downstream temperature (DST) gas rate for each well of the group of producing wells;
• determining, using the choke/PCV gas rate and the DST gas rate, parameters for a well rate test for each well of the group of producing wells, wherein the gas plant parameters are determined based on a reliability of values from the choke/PCV gas rate and the DST gas rate, wherein the reliability is based on flowing conditions of the group of producing wells, and wherein an unreliability exists if the flowrate of the Venturi meter is zero or above a given flowrate;
• determining, using the one or more computers and the parameters, a total gas rate for the producing wells;
• determining, using the one or more computers, a gas production allocation factor (G-PAF) for the producing wells;
• and
• determining, using the one or more computers and the total gas rate, a production allocation for each well of the producing wells.

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:
• receiving wellstream values and gas plant parameters from a plant information (PI) server, including receiving a flowrate of a Venturi meter;
• determining a PCV gas rate for each well of a group of producing wells;
• determining a DST gas rate for each well of the group of producing wells;
• determining, using the choke/PCV gas rate and the DST gas rate, parameters for a well rate test for each well of the group of producing wells, wherein the gas plant parameters are determined based on a reliability of values from the choke/PCV gas rate and the DST gas rate, wherein the reliability is based on flowing conditions of the group of producing wells, and wherein an unreliability exists if the flowrate of the Venturi meter is zero or above a given flowrate;
• determining, using the parameters, a total gas rate for the producing wells;
• determining a G-PAF for the producing wells;
• and
• determining, using the total gas rate, a production allocation for each well of the producing wells.