Integrated modeling: a tool to improve quality of design solutions in development of oil rims of multi-zone oil-gas-condensate fields

UDK: 622.276.1/.4.001.57
DOI: 10.24887/0028-2448-2018-12-46-49
Key words: integrated model, oil-gas-condensate fields development, oil rims, gathering system model, well model
Authors: R.T. Apasov (Gazpromneft NTC LLC, RF, Saint-Petersburg), I.L. Chameev (Gazpromneft NTC LLC, RF, Saint-Petersburg), A.I. Varavva (Gazpromneft NTC LLC, RF, Saint-Petersburg), O.S. Vernikovskaya (Gazpromneft NTC LLC, RF, Saint-Petersburg), A.R. Ilyasov (Gazpromneft-Yamal LLC, RF, Tyumen), V.I. Virt (Gazpromneft-Yamal LLC, RF, Tyumen)

As the petroleum industry development trend suggests by 2025 a significant part of Gazprom Neft’s hydrocarbons production will be provided by oil and gas condensate fields with oil rims and complex geological structure. By that time, the share of production from green fields will reach 50%. Given the complexity of such fields, the success of development projects will depend on the quality of consideration and efficiency of interrelated solutions for both field development and infrastructure facilities configuration.

This paper presents the experience in building a full-scale integrated model of a large oil-gas-condensate field, which includes models of oil rims for the main reservoirs, models of wells and downhole equipment, model of the fluid gathering and transportation system including the main transfer pumping station, and model of the gas reinjection system including the gas treatment facility compressor station.

The goal of the work is to find a balanced solution for oil well operation parameters taking into account the constraints imposed by the infrastructure. Integrated modeling is aimed at improving the project planning and production profile prediction quality by combining the models of the reservoir, wells, fluid gathering networks and surface infrastructure facilities into a single generic model. Development and implementation of this model that considers together the processes occurring in the reservoir and the surface networks, and takes into account infrastructure facilities’ operation constraints such as velocity of gas-liquid mixture in production tubing and in flowlines of the oil and gas gathering systems, constraints existing in the Gas Treatment Facility and Oil Treatment Facility, loop lines and bridges in pipeline systems, ensures higher quality of project decisions. The working platform for the integrated model is the RESOLVE software package in combination with the GAP, Prosper and tNavigator simulation products.


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