Indoor experiment method and device for simulating polymer flooding gravity segregation in reservoir bed

Abstract

The invention provides an indoor experiment method and device for simulating polymer flooding gravity segregation in a reservoir bed and aims at providing an experiment device and method, which can effectively simulate gravity segregation in the oil reservoir polymer flooding process. The indoor experiment device is characterized by consisting of a gravitational differentiation simulator, a first glass clamping cylinder, a second glass clamping cylinder, a resistance tester and a computer. According to the method, an electrified unit is in close connection with a polymer surface functional group; when a displacing fluid moves in rock core in the corresponding gravitational differentiation simulator in the direction of the main stream line, the rock core is subject to a downward lorentz force under the action of a vertical magnetic field in the gravitational differentiation simulator, by virtue of the lorentz force applied to the rock core, the gravity action is simulated, and accordingly, the gravity action can be effectively simulated even in a very thin rock core. Besides, the intensity of the magnetic field can be adjusted to control the magnetic force so as to simulate the gravity segregation under different reservoir conditions.

Description

technical field [0001] The invention relates to an experimental method and device for simulating on-site oil displacement in an indoor physical experiment, and in particular to an experimental method and device for simulating the effect of oil layer gravity differentiation in polymer flooding. Background technique [0002] The actual reservoir is a three-dimensional pore body, and the corresponding actual displacement process is also a three-dimensional displacement process. Therefore, the influence of gravity during the oil displacement process cannot be ignored. Especially obvious. [0003] As early as 1933, R.D. Wyckoff and others raised the issue of the effect of gravity on water flooding. In Daqing Oilfield, problems such as water seeping at the bottom of thick oil layers exposed during actual production and water flooding thickness are small are all related to the influence of gravity. In the paper, it was thought that the gravity gradient for oil-water gravity sepa...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems mentioned in the background technology, the present invention provides an indoor experimental method and device capable of simulating the gravitational differentiation of polymer flooding in reservoirs. The charged unit uses the Lorentz force on the core to simulate the gravity, thus effectively solving the problem that the current laboratory experiment cannot effectively simulate the gravity differentiation in the polymer flooding process of the oil layer

Images