Abstract

Preparing an economic assessment for the development of new oil and gas equity is an important task that affects many different design decisions. At the same time, at the early stages of project implementation, there are the greatest levers to increase their final economics, but unfortunately, the insufficient knowledge of the field does not allow making accurate forecasts.To obtain production profiles in such conditions, a simplified hydrodynamic model (HDM) is usually used, on which an analysis of the uncertainties of the input data is carried out. To do this, the ranges of change of the most significant parameters affecting the production are determined (porosity, permeability, PVT-properties of oil, etc.). Further, the set of production profiles for all possible variations of each uncertain parameter is averaged. At the same time, an increase in the number of variable parameters leads to an exponential increase in labor costs. Additional complexity in carrying out such calculations is created by the need to involve specialists of various profiles employees of the services of the chief geologist responsible for the design of the field development, and the chief engineer responsible for the well completion design. This makes it possible to consider both the potential of the reservoir and the limitations of surface infrastructure in the overall solution. The latter is critical for offshore fields, since oil platforms do not have the same flexibility in terms of modification as surface facilities.Offshore deposits are also of particular interest from the point of view of the need to replenish Russia's raw material base due to the depletion of more accessible onshore deposits in the medium term.In this way, the development of an engineering calculator for calculating the production profile for an oil platform is a complex but important task for the oil industry. This article presents the results of its formalization and solution.

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