RU2009143585A - METHOD FOR DEVELOPING AN INHOMOGENEOUS MASSIVE OR MULTIPLAST GAS-OIL OR OIL AND GAS-CONDENSATE DEPOSIT - Google Patents

Abstract

 1. A method for developing a heterogeneous massive or multi-layer gas-oil or oil-gas condensate field, including drilling wells, coring, conducting a complex of geophysical studies, testing and hydrodynamic studies of individual intervals along the thickness of the section, according to the invention, create a database of measurement results of various geophysical measurements taken for each region parameters for each 0.05-0.15 m of formation thickness, parameters with asymmetric lognormal distribution transform to distribution, standardize all parameters by subtracting the mean and dividing by the standard deviation, and then perform a hierarchical class construction procedure consisting in sequentially combining interlayers in such a way that the resulting classes have a minimum dispersion of parameters around the center - variance, highlighting a sharp increase in variance that is natural for a given section number of classes with different geophysical parameters, calculate the ranges of variation and average values of these parameters for I of each distinguished class of formations, determine the nature of lithology, filtration-reservoir properties and fluid saturation of each class, carry out correlation of the distinguished classes between wells, construct a geological and hydrodynamic model of a productive reservoir, on which the effectiveness of the development system is evaluated for various options for incorporating the distinguished classes into production facilities by calculations technological development indicators with the determination of hydrocarbon production levels in various modes with the assessment of forecast coefficients

Claims (2)

1. A method for developing a heterogeneous massive or multi-layer gas-oil or oil-gas condensate field, including drilling wells, coring, conducting a complex of geophysical studies, testing and hydrodynamic studies of individual intervals along the thickness of the section, according to the invention, create a database of measurement results of various geophysical measurements taken for each region parameters for each 0.05-0.15 m of formation thickness, parameters with asymmetric lognormal distribution transform to distribution, standardize all parameters by subtracting the mean and dividing by the standard deviation, and then perform a hierarchical class construction procedure consisting in sequentially combining interlayers in such a way that the resulting classes have a minimum dispersion of parameters around the center - variance, highlighting a sharp increase in variance that is natural for a given section number of classes with different geophysical parameters, calculate the ranges of variation and average values of these parameters for I of each distinguished class of formations, determine the nature of lithology, filtration-reservoir properties and fluid saturation of each class, carry out correlation of the distinguished classes between wells, construct a geological and hydrodynamic model of a productive reservoir, on which the effectiveness of the development system is evaluated for various options for incorporating the distinguished classes into production facilities by calculations technological development indicators with the determination of hydrocarbon production levels in various modes with the assessment of forecast coefficients of oil extraction and economics of the development process of individual production facilities and the field as a whole and the best option is implemented in practice. 2. The method according to claim 1, characterized in that when determining the nature of lithology, filtration-capacitive properties and fluid saturation of each class, when correlating the selected classes between wells, additional data on core, tests and hydrodynamic studies of the wells are used.