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Dualistic superposed wave reinforced oil displacing experiment device and experiment method

An experimental device and oil displacement technology, applied in earthwork drilling, production fluid, wellbore/well components, etc., can solve problems such as reduced oil recovery and narrow resonance frequency range

Active Publication Date: 2013-07-03
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

But the disadvantage is that the frequency range of a single wave is very narrow near the natural frequency of the system, so if the parameters are not selected properly, the recovery factor may be reduced

Method used

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  • Dualistic superposed wave reinforced oil displacing experiment device and experiment method
  • Dualistic superposed wave reinforced oil displacing experiment device and experiment method
  • Dualistic superposed wave reinforced oil displacing experiment device and experiment method

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Embodiment Construction

[0057] like figure 1 , figure 2A binary superimposed wave enhanced oil displacement experimental device shown includes an artificial harmonic wave test bench 1, a core holder 2 fixed on the artificial harmonic wave test bench 1 and used to hold the tested rock core, The thermostat arranged on the outside of the core holder 2 connects with the ring pressure interface of the core holder 2 through the hydraulic pipeline 28 and applies a ring pressure to the tested rock core clamped inside the core holder 2 The ring pressure supply device 3, the hydraulic pulse wave generator 4, are respectively connected to the liquid inlet of the core holder 2 through the water pipeline and the oil pipeline, and the high-pressure water for simulating formation water and simulating formation oil is respectively installed inside. Tank 5 and high-pressure oil tank 6 and the liquid container that connects with the liquid outlet of rock core holder 2 through external pipeline, the scale that measur...

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Abstract

The invention discloses a dualistic superposed wave reinforced oil displacing experiment device and an experiment method. The dualistic superposed wave reinforced oil displacing experiment device comprises an artificial resonance wave test table, a rock core holder, a ring-pressure supplying device, a hydraulic impulse wave generator, a high-pressure water tank, a high-pressure oil tank and a liquid container, wherein the hydraulic impulse wave generator is arranged between a liquid outlet of the high-pressure water tank and the rock core holder, the high-pressure water tank and the high-pressure oil tank are connected with a liquid inlet of the rock core holder through a water pipeline and an oil pipeline, the liquid container is connected with the liquid outlet of the rock core holder, middle transition containers are respectively arranged on the water pipeline and the oil pipeline. The experiment method comprises the following steps of: firstly, under the condition of no dualistic superposed waves, carrying out a reinforced oil displacing experiment; secondly, replacing a rock core and carrying out the reinforced oil displacing experiment on a plurality of rock cores under two wave field conditions of artificial resonance waves and hydraulic impulse waves which have different frequencies and amplitudes; and thirdly, processing data. The method has the advantages of rationaldesign, convenient distribution, complete functions, simple and convenient operation and good simulation effect and can test the final recovery ratio and the residual oil saturation of different rockcores under the conditions of two wave fields.

Description

technical field [0001] The invention belongs to the technical field of dynamic physical simulation experiments of enhanced oil displacement in an oil recovery chamber, and in particular relates to a binary superimposed wave enhanced oil displacement experimental device and an experimental method. Background technique [0002] Nowadays, wave field enhanced oil recovery has been studied in practice. Displacement vibration and hydraulic vibration alone have an impact on the seepage characteristics of reservoir cores. In the actual oil recovery process, after selecting appropriate vibration parameters, displacement vibration and hydraulic vibration Both hydraulic vibration methods can increase oil recovery and achieve the purpose of increasing production and injection. But the disadvantage is that the frequency range of a single wave is very narrow near the natural frequency of the system, so if the parameters are not selected properly, the recovery factor may be reduced instead...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/25E21B43/26E21B43/20
Inventor 吴飞鹏蒲春生刘静张更
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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