Visual physical simulation device under condition of complex hydrocarbon reservoir real core well network

Abstract

Disclosed is a visual physical simulation device under the condition of a complex hydrocarbon reservoir real core well network. A displacement system is connected with a well network physical simulation unit. The well network physical simulation unit is connected with a flow metering system. A high pressure pipeline in front of the well network physical simulation unit and a high pressure pipeline behind the well network physical simulation unit are provided with identical pressure sensors respectively. The two pressure sensors are respectively connected with a monitoring system. A microscope is arranged above the well network physical simulation unit and connected with the monitoring system. The displacement system enables pressurized displacement fluid to enter the high pressure pipelines. The pressure sensors monitor pressure and then are connected into a real core set. Pressure at the preset position is monitored through the sensors and transmitted into the monitoring system. The displacement fluid enters a stainless steel tube groove and then flows into an exit end guiding groove. After the pressure is monitored by the rear-end pressure sensor, the displacement fluid flows to the metering system, and flow is recorded. The inlet end and the outlet end in the whole displacement process and signals of the pressure sensors of a well network physical simulation system are connected into the monitoring system. Meanwhile, the monitoring system monitors real-time images in the displacement process in real time through the microscope.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a visual physical simulation device under real core well pattern conditions of complex oil and gas reservoirs. Research on water flooding seepage law under various well patterns in oil and gas reservoir exploitation. Background technique [0002] It is very important to study the law of seepage in the process of oil and gas field exploitation. Unclear understanding of seepage law will seriously restrict the preparation of oil and gas field development plan and its development effect. If unreasonable well pattern or well row direction is adopted, it may cause premature water flooding of the oil field, and the water flooding sweep coefficient will be low, which will make the ultimate recovery On the low side, it is difficult to improve the development effect after later transformation. In addition, for the oilfields under development, before adjusting t...

AI Technical Summary

Problems solved by technology

This kind of experiment is a physical simulation method widely used at present, and generally adopts linear or radial flow, which cannot simulate seepage under well pattern conditions. In addition, it is difficult to visualize this kind of physical simulation experiment; (2) Microscopic thin-section physical simulation, this technology adopts Real rock cores are made into thin slices, and the thin slices are used to study the law of permeability in the core under microscopic conditions, the mechanism of enhanced oil recovery, etc. This method can only be used for the equivalent simulation of the connection of multiple thin slices. It is possible to carry out displacement experiments in a single mode, but it is impossible to carry out physical simulations under well pattern conditions. At the same time, the pressure of each position cannot be detected during the simulation process of this model

[0006] At present, the physical simulation devices using the above two real core physical simulation methods in foreign countries are mainly aimed at the physical simulation of conventional cores under non-well pattern conditions, and it is difficult to visualize (conventional cores) and pressure monitoring (thin-section simulation) at the same time.

There is no report on the physical simulation device that can detect the visible pressure under the condition of complex oil and gas reservoir well pattern

Images