Novel method for predicting low-permeability sandstone reservoir productivity based on conventional logging information

Abstract

The invention provides a novel method for predicting low-permeability sandstone reservoir productivity based on conventional logging information. The novel method for predicting low-permeability sandstone reservoir productivity based on conventional logging information comprises the steps that 1, on the basis that core analysis information is combined with logging information, basic parameters are obtained; 2, a flow coefficient is determined, a pressure gradient is started; 3, multiple regression is used for building a yield quantitative prediction model; 4, a productivity prediction simple plate is built, and the low-permeability sandstone reservoir productivity is predicted; 5, a fracture layer selection plate is built, and whether a low-permeability sandstone reservoir needs to be subjected to fracture or not is evaluated; 6, a fractured yield prediction plate is built, and the fractured yield is subjected to quantitative prediction. According to the novel method for predicting low-permeability sandstone reservoir productivity based on conventional logging information, the problems caused by evaluation and prediction of the low-permeability sandstone reservoir productivity in the current oil field high-exploration-level stage are solved, and low-permeability sandstone reservoir productivity qualitative and quantitative evaluation is achieved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to a new method for predicting productivity of low-permeability sandstone reservoirs based on conventional logging data. Background technique [0002] The productivity evaluation research of low-permeability reservoirs started earlier at home and abroad, but most of them are qualitative descriptions of the macro-geology and micro-seepage characteristics of low-permeability reservoirs. Predecessors have conducted comprehensive research on geology, well logging, stratigraphy, geochemistry, etc., and have achieved important understanding and results, which have played an important role in oil and gas exploration, mainly focusing on the following aspects: ①Through the The study on the geological characteristics of permeable reservoirs clarified the sedimentary types and main controlling factors of low-permeability reservoirs; (2) In terms of the seepage theory of low-perme...

AI Technical Summary

Problems solved by technology

Some oilfields in China have formed some targeted charts for the productivity of low-permeability reservoirs, which can effectively predict the productivity and have a good reference and guiding significance for the productivity evaluation of the current low-permeability sandstone reservoirs. However, no logging data has been used yet. Technology for Intuitive Production Capacity Prediction

Images