Gas field operational management optimization

Eldar R. Vildanov Northgas Novy Urengoy, Russian Federation
Konstantin S. Sorokin NOVATEK, PAO Moscow, Russian Federation
Igor V. Seleznev Sibir'SoftProekt Tomsk, Russian Federation
Benik V. Khachaturyan Northgas Novy Urengoy, Russian Federation
At the present time, the gas field is a complex system, which includes various subsystems such as: separator, pipelines, wells and reservoir. One of the actual problem of the field operational management is a gas-condensate wells regime planning. The objective is to find by iterations a wellhead pressure that will provide require production plan and will keep stabilize regime for each well.As an approach for this aim authors proposed the Levenberg - Marquardt algorithm which will describe in this article.
Materials and methods
Levenberg - Markquardt algorithm.
The tests conducted on actual data have shown rather rapid convergence of the implemented optimization algorithm. On the test bench (Intel Core i5 2x3000 Hz,8 GB of RAM), the calculation of one iteration of the algorithm (about 100 wells) takes an average of no more than 0.1 s, while optimization requires about 100-400 iterations, depending on the set limits and target production.
The described approach for solving operational tasks of gas field management based on math tools can help engineers to reduce his time to find an optimal solutions. These tools are implemented in AIS SUPD CJSC Northgas as a pilot operation.
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gas field well regime planning optimization Levenberg - Markquardt optimal management