Visual nanometer magnetofluid panel oil displacement experiment device and experiment method

Abstract

The invention relates to a visual nanometer magnetofluid panel oil displacement experiment device and an experiment method.The visual nanometer magnetofluid panel oil displacement experiment device comprises a middle container, a sand filling panel, a panel holder, magnetic field generators, an injection end pressure gauge, a withdrawal end pressure gauge, a fluid counter and a vacuum pump.The sand filling panel is fixed through the panel holder, drilling is conducted at different positions on the sand filling panel, and rubber pipes are sleeved with drilled holes to simulate well points.The middle container is connected with the injection end of the sand filling panel through a displacement liquid conveying pipeline, the fluid counter and the vacuum pump are connected with the withdrawal end of the sand filling panel through a withdrawal liquid conveying pipeline, and the magnetic field generators are arranged around the sand filling panel.The experiment device is simple in structure, convenient to arrange and capable of simulating the porous medium oil displacement process of different heterogeneous characters, and the experiment process and result can provide a reliable technical basis for oil fields to implement nanometer magnetofluid oil displacement and further excavate potentials of remaining oil, and have certain guidance and reference significance.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to a visual nano-magnetic fluid plate flooding experimental device and an experimental method. Background technique [0002] Water injection development is the most effective and widely used method to maintain formation pressure and enhance oil recovery. However, due to the "predominant channel" between the injection and production wells formed by long-term water injection scour and the complex geological factors of the reservoir, the injected water did not flow according to the expected displacement path, resulting in a small sweep area, low displacement efficiency, and low crude oil recovery. Low is also an important factor affecting the high water cut of oil wells in the late stage of water injection development. How to further increase oil recovery has become an urgent problem to be solved. At present, domestic and foreign enhanced oil recovery methods include ...

AI Technical Summary

Problems solved by technology

At present, domestic and foreign enhanced oil recovery methods include thermal methods, chemical methods, gas injection methods, and microbial methods, etc. The oil displacement mechanism is mainly to reduce the mobility ratio of displacement fluid to crude oil and interfacial tension to increase the displacement sweep range and wash oil. efficiency, but the above methods cannot effectively solve the problem of low displacement efficiency caused by reservoir heterogeneity, complex structure and other factors

Images