A method and device for measuring formation pore structure and fluid properties

Abstract

The invention provides a method and equipment for measuring pore structures and fluid characteristics of strata. The method includes selecting multiple stratum samples; analyzing the multiple stratum samples to determine a rock-electricity relationship model; determining stratum water saturation according to the rock-electricity relationship model; determining stratum oil-gas saturation according to the stratum water saturation; determining stratum water resistivity according to the rock-electricity relationship model; collecting logging information of current reservoirs; comprehensively interpreting the logging information according to the stratum water saturation, the stratum oil-gas saturation and the stratum water resistivity, and acquiring the stratum water saturation, the stratum oil-gas saturation and the stratum water resistivity of the current reservoirs. By the method and the equipment, influences of non-Alchie phenomena can be reflected, stratum oil-gas content can be accurately evaluated through the novel rock-electricity relationship model, accuracy of reservoir oil-gas evaluation can be effectively improved, and oil-gas exploration risks can be lowered.

Description

technical field [0001] The present invention relates to the technical field of geophysical well logging exploration, in particular to the exploration technology of formation pore structure and fluid properties, specifically a method and equipment for measuring formation pore structure and fluid properties. Background technique [0002] Oil and gas resources are national strategic resources that affect sustainable economic and social development and social security. With the rapid development of the national economy, the demand for oil and gas resources is increasing. Since 1993, my country has become a net importer of oil and gas resources. It is an urgent task for my country's oil and gas exploration and development enterprises to explore and develop more oil and gas resources for the country to meet the needs of the rapid development of the national economy. From the economic and technical point of view, reservoir reserve evaluation is an important key technology. Improvi...

AI Technical Summary

Problems solved by technology

[0012] However, since the above-mentioned traditional Archie formula is a semi-theoretical and semi-empirical formula based on the physical and electrical experiments of pure sandstone rocks (with high porosity), it has certain limitations in practical application. Increase the risk of actual exploration, resulting in inaccurate detection, which is not conducive to discovering more oil and gas resources for national exploration

Images