Logging hydrocarbon reservoir interpretation method for calculating comprehensive water content of reservoir by utilizing multiple parameters

Abstract

The invention discloses a logging hydrocarbon reservoir interpretation method for calculating the comprehensive water content of a reservoir by utilizing multiple parameters. The method comprises thefollowing steps of adopting geology, gas logging and geochemical data obtained by on-site logging to make data quality analysis, quantifying by combining regional characteristics and influence factors, and calculating the comprehensive water content of the reservoir by considering explanation weight coefficients of single technology in a work area, gaseous and liquid hydrocarbon abundance indexesunder different oil quality conditions, total hydrocarbon values, Pg values and the like of typical water layers in the same layer group or the same oil-water system. The comprehensive water contentof the reservoir is calculated as a quantitative parameter, and the water content of the reservoir can be analyzed by utilizing the parameter, so that the oil-gas condition of the reservoir is quantitatively evaluated. The method highlights the comparison relationship between the water layer and the reservoir, and can quantitatively evaluate the comprehensive oil and gas containing condition of the reservoir. In the using process, the interpretation coincidence rate of well logging is increased, applicability is high, and the method can be used and popularized as a novel well logging hydrocarbon reservoir interpretation method.

Description

technical field [0001] The invention belongs to the field of mud logging in wellbore technology in the exploration industry of the petroleum industry, is suitable for mud logging comprehensive interpretation and evaluation, and particularly relates to a mud logging oil and gas layer interpretation method using multiple parameters to calculate the comprehensive water content of reservoirs. It is used for the interpretation and evaluation of mud logging oil and gas layers, using the field geology, gas logging and mud logging geochemical logging data, combined with regional characteristics, quantifying the influencing factors, establishing the evaluation formula between the reservoir and the standard water layer, and evaluating the reservoir Quantitative interpretation and evaluation of oil and gas identification. Background technique [0002] Gas logging and geochemical mud logging are important technical means for mud logging to judge oil quality and explain oil and gas layer...

AI Technical Summary

Problems solved by technology

[0004] In the mud logging industry, many attempts have been made to combine gas logging and geochemical logging parameters for comprehensive interpretation. There are many established charts for oil, gas and water interpretation and evaluation. Combination, the universality and accuracy of the interpretation chart cannot meet the interpretation and evaluation needs of complex oil and gas layers, and quantitative interpretation and evaluation of the water content of the reservoir has not been realized

Images