Method and device for performing simulating profile control to heterogeneous reservoir in laboratory

Abstract

A method and a device for performing simulating profile control to a heterogeneous reservoir in a laboratory. The invention mainly aims to solve a problem that there is no effective method and device for achieving the simulating profile control to the heterogeneous reservoir in the laboratory in the prior art. The device includes a heterogeneous core model, an injection metering apparatus and an extraction collection apparatus. The heterogeneous core model is composed of an inlet outer-buckle fixer, a core main body holder, and an outlet outer-buckle fixer. The method includes following steps: (1) when relative data is acquired by the device, calculating single-layer practical injection amount V and fluid channeling amount V<ci> at each layer; (2) when the fluid channeling rate at the highest layer reaches a diversion limit in a practical mine field, changing a profile control liquid and injecting the profile control liquid through a pump, and stopping the pump until the accumulated injection amount at a core injection end reaches the injection amount required to be simulated in the practical mine field; (3) changing the profile control liquid into the original injection liquid again, starting the pump for simulating a subsequent displacement process to respectively obtain fluid channeling rate C at each layer, thereby achieving a profile control quantitative effect after injection of the profile control liquid.

Description

technical field [0001] The invention relates to a method applied in the field of oil and gas field development, in particular to a method and device for simulating profile control of heterogeneous separate injection and production reservoirs in a laboratory. Background technique [0002] With the continuous development of domestic petroleum, the contradiction between reservoir layers has become more and more prominent, because the difference in porosity and permeability of reservoir sand bodies exists objectively, and the influence of heterogeneity and anisotropy is prominent. , under the same pressure system, the injection agent mainly flows into the high-permeability layer, and relatively little or no flow into the low-permeability layer, resulting in uneven liquid absorption profile, and even single-layer breakthrough, resulting in a rapid rise in water cut in the production well, and the recovery rate low disadvantages. In order to improve the production effect, the maj...

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Problems solved by technology

[0004] In order to solve the technical problems mentioned in the background technology, the present invention provides a method for simulated profile control of heterogeneous reservoirs in the laboratory and a device specially designed for implementing the method. This device can not only It solves the problem of different thicknesses of different permeability layers in heterogeneous reservoirs between injection and production wells in indoor experiments, and can effectively simulate the distribution of different permeability layers, and can realize separate injection and production, so that the indoor injection and production can be completed through experiments. Effective simulated profile control of heterogeneous reservoirs becomes possible

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