METHOD FOR GEOCHEMICAL MONITORING OF WELLS FOR ANALYSIS AND MANAGEMENT OF FIELD DEVELOPMENT Russian patent published in 2022 - IPC E21B47/10 E21B49/08 E21B41/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry, in particular to monitoring the operation of wells for the analysis and management of field development. A method for geochemical monitoring of wells for the analysis and management of oil field development based on the interpretation of the results of geochemical studies of the properties of the extracted fluid (oil, water) is proposed, which consists in the fact that representative samples of the extracted fluid are selected from wells operating on one specific horizon, reference wells of the reservoir, in such a way as to cover studies by area, by the section of the studied area, wells, and samples are taken from wells with two or more perforated layers; the samples are filtered from suspended particles and the aqueous and hydrocarbon components are separated, then the content of cations, anions, isotopic, fractional, component compositions are determined in these samples; the result of the study of the samples is given in ppm, ppb, mg/ l, ppm for each component (M1, M2, ...); the data obtained is processed by constructing analytical graphs with readings of the studied components (M1, M2, ...) for each sample, where the X, Y axes indicate the content of the component and the serial number of the sample; the unique features: markers of fluid samples of each of the layers are determined; then it is determined from which reservoir the extracted fluid is taken, the volume fractions of the inflow are calculated for each perforated reservoir being the object of development in wells with two or more perforated layers using mathematical statistics by constructing a predictive model.

EFFECT: expansion of the research functionality for the analysis and management of field development.

1 cl, 5 dwg