METHOD AND TOOL FOR THE SELECTION OF OPERATING PARAMETERS OF WELLS AT THE MATURE OIL FIELDS FLOODING STAGE

摘要

FIELD: oil and gas industry.;SUBSTANCE: group of inventions relates to the development of mature oil fields in the third and fourth stages of development and, in particular, to the selection of parameters for the operation of wells in the production of hydrocarbons on such fields. According to the method, a basic version of the operation modes for a subset of wells in the oil field is obtained or loaded – current operating parameters in the medium term 3–5 years. Basic version of the well operation modes is taken as the initial iteration of optimization. Calculation of the medium-term forecast of production profiles – the dynamics of production for each well of a given subset in the medium term using an integrated model is carried out. This model combines the surface infrastructure and the layer filtration model. Model of a decrease in layer productivity calibrated according to a medium-term production forecast is calculated to approximate a long-term production forecast for a subset of wells. Calculation of the performance metrics based on the medium-term production forecast, including the oil recovery factor – oil recovery factor is carried out. Compliance of the performance metrics with a given criterion is defined. When non-compliance of efficiency metrics with the specified criterion is found, the current mode of operation is changed. Re-calculation the forecast is carried out as well as the performance metrics, until the specified criterion is fulfilled. Current version of the operation modes for a subset of wells is checked and corrected based on the test if the efficiency metrics meet the specified criterion. Current mode of operation for a subset of wells in the graphical user interface is displayed. Signal is generated and transmitted to automatically set well operation parameters in accordance with the current option of operation modes for a subset of wells.;EFFECT: increase of oil recovery rate at the fields.;20 cl, 3 tbl, 8 dwg