System, program product, and related methods for performing automated real-time reservoir pressure estimation enabling optimized injection and production strategies

Reservoir management program product to provide real-time reservoir management of a plurality of reservoirs across one or more fields, the program product comprising a set of instructions stored on a tangible computer readable medium, that when executed by a computer, cause the computer to perform the operations of:

• calibrating an injection well model for each of a plurality of injection wells positioned in at least one reservoir responsive to real-time injection rate and wellhead pressure data associated therewith;
• calculating static reservoir pressure for each of the plurality of injection wells responsive to the respective calibrated injection well model and responsive to respective surface injection rate and wellhead pressure data;
• and
• forming at least one isobaric pressure map of the at least one reservoir comprising pressure mapping data for a plurality of producer wells and at least one injection well responsive to the operation of estimating static reservoir pressure for each of the plurality of injection wells and responsive to measured real-time reservoir pressure data measured for each of a plurality of producer wells, to include combining the calculated real-time static reservoir pressure for the at least one injection well with producer well reservoir pressure data measured for each of the plurality of producer wells.

A system to providing real-time reservoir management of a plurality of reservoirs across one or more fields, the system comprising:

• a communication network;
• a plurality of injection wells each positioned to inject water into a portion of a reservoir, and each including:
• a wellhead pressure sensor to measure wellhead pressure,
• an injection rate sensor to measure an injection rate of the water when being injected, and
• a transceiver adapted to communicate wellhead pressure sensor and injection rate sensor data over the communication network;
• a plurality of monitoring wells each including:
• a permanent downhole monitoring sensor to provide real-time measured pressure values of reservoir pressure adjacent the respective monitoring well, and
• a transceiver to communicate real-time measured pressure value data over the communication network;
• a reservoir management computer positioned remote from the plurality of injection wells and the plurality of monitoring wells and in communication with the communication network to provide real-time reservoir management of the plurality of reservoirs, the computer including:
• a processor, and
• memory coupled to the processor;
• and
• reservoir management program code stored in the memory of the reservoir management computer, the reservoir management program code including instructions that when executed by the reservoir management computer, cause the computer to perform the operations of:
• calibrating an injection well model for each of a plurality of injection wells positioned in at least one reservoir responsive to real-time injection rate and wellhead pressure data associated therewith,
• calculating static reservoir pressure for each of the plurality of injection wells responsive to the respective calibrated injection well model and responsive to respective surface injection rate and wellhead pressure data, and
• forming at least one isobaric pressure map of the at least one reservoir comprising pressure mapping data for a plurality of producer wells and the plurality of injection wells responsive to the operation of estimating static reservoir pressure, the operation of forming including combining the calculated real-time static reservoir pressure for each of the plurality of injection wells with producer well reservoir pressure data measured for each of a plurality of producer wells and a plurality of observation wells.

A computer readable medium storing a computer memory element containing a database, the database containing data in computer readable format, the respective data stored in the database by a computer, the computer including a computer-readable code of program instructions defining a computer program, the computer program comprising instructions, which when executed by the computer, cause the computer to perform the operations of storing the respective data, and analyzing the respective data contained in the database, the database comprising:

• time-related injection well data including measured injection rate and wellhead pressure data for at least one injection well;
• injection well model data of the at least one injection well;
• well injectivity index data for the at least one injection well model, determined by the computer responsive to the time related injection well data;
• static downhole pressure data for the at least one injection well estimated by the computer responsive to the well injectivity index data and the time-related injection well data;
• time-related producer well data including measured static downhole pressure data for each of a plurality of producer wells for at least one oil reservoir;
• and
• reservoir pressure data generated by the computer responsive to the estimated static downhole pressure data and the time-related producer well data.