Multi-phase fluid oil displacement and pulse unblocking integrated physical simulation experiment device and method

Abstract

The invention discloses a multi-phase fluid oil displacement and pulse unblocking integrated physical simulation experiment device and method. The device mainly comprises a multi-phase fluid generation and storage system, a multi-phase fluid spreading and impulse wave generation system, a reservoir core simulation system and a dynamic experiment data collection system. The multi-phase fluid spreading and impulse wave generation system comprises a multi-phase fluid injection pipeline, a pulse oscillation generation cavity casing, a collision body and a multi-phase fluid output and pulse wave spreading pipeline. The device mainly utilizes difference of gas and liquid elastic modulus to achieve conversion between pulse unblocking / oil displacement and gas (steam) injection functions to simplify the oil displacement / pulse simulation process in different oil reservoir exploitation processes. The experiment can relate to simulation of experiment processes of miscible-phase displacement and gas water alternative oil displacement, reservoir pulse unblocking, thick oil thermal exploitation storage layer steam injection, oil displacement-unblocking and the like. The device is reasonable in design, simple in operation process and capable of effectively simulating the multi-phase fluid oil displacement and pulse unblocking effects.

Description

technical field [0001] The present invention specifically relates to a multiphase fluid flooding-pulse plugging removal integrated physical simulation experiment device and method; mainly aimed at hydraulic pulse wave flooding / blocking removal, immiscible oil flooding, gas-water cross-injection and heavy oil steam injection flooding Experimental simulation of deblocking and injection enhancement; it is a method that utilizes the difference in properties of gas (steam) and liquid fluid, especially the difference in elastic modulus, to realize deep oil displacement in simulated reservoirs, pulse deblocking, and immiscible gas-water displacement. Experimental device and method for injection and steam injection to depressurize, deblock and increase injection. Background technique [0002] With the continuous development of conventional oil and gas resources, the replacement of complex oil and gas resources is an important supplement to the world's oil and gas resources, and the ...

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Problems solved by technology

Among them, the downhole low-frequency swabbing vibration plugging removal device and its application method (application number 201110417746.9) realize depressurization and plugging removal of oil reservoirs in the near wellbore zone through the alternating action of the positive pressure formed when the fluid in the wellbore is squeezed and the negative pressure formed during suction. , the disadvantage is that the distance to unplug the oil layer is limited, etc.

Most of the physical depressurization methods need to use other external energy to achieve the purpose of depressurization. At the same time, because the general physical depressurization operation needs to be implemented step by step with other production processes, and the string needs to be lifted and lowered many times, increasing Reduced operating time and cost, and affected steam injection efficiency

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