A device and method for simulating mine field test by separating quality and injecting

Abstract

The invention relates to a quality-divided separated injection device for mine field test simulation and a method. The invention mainly aims at providing a test device and a method for a test so as to provide a targeted indoor test and evaluation method for a mine field test. The device is characterized by comprising a heterogeneous casting composite rock core, an injection unit, an extraction unit, a plurality of constant-speed constant-flux pumps, piston containers, pressure meters and a measuring cylinder, wherein the constant-speed constant-flux pumps, the piston containers and the pressure meters are matched with the injection device; the measuring cylinder is matched with the extraction device; the heterogeneous casting composite rock core, the injection unit, the extraction unit, the piston containers and the pressure meters are arranged in a constant-temperature box; each constant-speed constant-flux pump is connected with the bottom the corresponding piston container and provides moving power for displacing fluid inside each piston container; and after the outlet end of each piston container monitors the injection pressure of each layer through the corresponding pressure meter and is then connected to a steel pipeline of the injection device through a pipeline, the layered injection is realized.

Description

[0001] Technical field: [0002] The invention relates to a material separation and injection device and method for simulating field tests in the field of oil and gas field development, in particular to an indoor experimental device and method capable of simulating polymer flooding. [0003] Background technique: [0004] At present, polymer flooding has been applied on a large scale in various oil fields. With the requirements of crude oil production output, polymer flooding targets have begun to target the second or third types of reservoirs with low permeability and large intra-layer or inter-layer ranges. The use of general injection technology will lead to the contradiction that the relatively high-permeability layers between layers are relatively low producing, and the polymer in the low-permeability layer is actually injected less. The general injection will also often lead to excessive pressure increase, approaching or exceeding the fracture pressure, resulting in the in...

AI Technical Summary

Problems solved by technology

[0005] In view of the unrepeatability of oilfield development and consideration of the protection of reservoirs, all current field tests need to carry out targeted indoor experiments first, but the current problem in indoor experiments is: the lack of effective methods for quality separation and injection. Experimental devices and experimental methods. The existing indoor experimental devices cannot accurately locate the position of the hypertonic zone, and cannot perform targeted profile control. As a result, it is impossible to realize the effective simulation of mine tests through the existing devices, and it is impossible to establish indoor experiments and Active Connections for Field Trials

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