linear, single-parameter model to evaluate casing-head gas outcome in flares using data of satellite sensing in the transmission micro-window from 3.66 to 3.84 ?m by sensors like MODIS is presented. In this model the casing-head gas outcome in a flare is proportional to difference between the radiances of the pixel covering the flare and a neighbor background pixels of the sensor. The magnitude of the parameter is determined from the comparison of simultaneous direct measurements of the casing-head gas outcome in the flare and data acquired with MODIS. The proposed model is realized as an original code, calibrated and tested at one of the flares of Khanty-Mansiysk region (61.8N; 77.2E) based on data from MODIS/Terra.