Core displacement device capable of realizing synchronous evaluation of oil displacement effect

Abstract

The invention discloses a core displacement device capable of realizing synchronous evaluation of an oil displacement effect. The core displacement device comprises a water injection system, a core clamping device, a confining pressure pump, a pressure gauge, a constant-temperature box and a collection device, wherein the water injection system comprises a pulse-free pump, a plurality of liquid storage tanks arranged in the constant-temperature box, a valve regulation system, a plurality of buffering tanks and a liquid flow meter; an inlet of each liquid storage tank is connected with an output end of the pulse-free pump; an outlet of each liquid storage tank is connected with the corresponding buffering tank and an input end of an inner cavity of the core clamping device through the valveregulation system respectively; the core clamping device is of a barrel-shaped sealing structure placed in the constant-temperature box and the inner part of the core clamping device comprises a plurality of cavities for placing cores; the bottom of the core clamping device is connected with the confining pressure pump; the pressure gauge is connected onto the core clamping device through a thread. The core displacement device disclosed by the invention can be used for synchronously evaluating the oil displacement performance of several oil displacement agents, an evaluation period is shortened, the economic cost and the space cost are reduced and the accuracy of a result is high.

Description

technical field [0001] The invention relates to an oil field production experiment instrument, in particular to a core displacement device capable of synchronously evaluating the oil displacement effect. Background technique [0002] With the development of the oil industry, most oil fields have entered binary flooding, and some of them have also entered the high water cut period. Therefore, different oilfield production blocks will require different schemes. Therefore, this needs to be done before implementing different schemes. Laboratory experiments, especially core flooding experiments. However, the existing experimental instruments are generally unable to simultaneously evaluate the advantages and disadvantages of multiple schemes, and have only one function, such as conducting research on core permeability measurement and formation damage evaluation (core sensitivity) under the conditions of simulated formation pressure and formation temperature , which will not only ...

AI Technical Summary

Problems solved by technology

However, the existing experimental instruments are generally unable to simultaneously evaluate the advantages and disadvantages of multiple schemes, and have only one function, such as conducting research on core permeability measurement and formation damage evaluation (core sensitivity) under the conditions of simulated formation pressure and formation temperature , which will not only prolong the experimental development cycle, but also increase the economic cost of the experiment and bring a lot of inconvenience

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