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Hydraulic pulse-assisted reservoir chemical remedial treatment experiment device and method

A technology of hydraulic pulse and experimental equipment, which is applied in measuring equipment, scientific instruments, earthwork drilling and mining, etc., and can solve problems such as poor plugging effect, short action time, and small distance

Active Publication Date: 2013-05-08
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current conventional acidification and chemical plugging removal methods have poor plugging removal effects, and their action time is short and the distance into the formation is small, which cannot effectively solve the plugging problem of formation plugging pollution. Therefore, the existing acidification and chemical plugging removal methods The means can no longer meet the actual needs of the site

Method used

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  • Hydraulic pulse-assisted reservoir chemical remedial treatment experiment device and method
  • Hydraulic pulse-assisted reservoir chemical remedial treatment experiment device and method
  • Hydraulic pulse-assisted reservoir chemical remedial treatment experiment device and method

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Embodiment Construction

[0069] Such as figure 1 , Figure 4 The shown hydraulic pulse assisted reservoir chemical plugging removal experiment device includes a core holder 2 for holding the tested core 1, a constant temperature box arranged outside the core holder 2, and a hydraulic pipeline 3 Connected with the ring pressure interface of the core holder 2 and apply the ring pressure supply device 4 that applies ring pressure to the tested rock core 1 clamped inside the core holder 2, through the chemical reagent delivery pipeline and the core The chemical reagent storage tank connected to the liquid inlet of the holder 2 is connected to the liquid inlet of the core holder 2 through water pipelines and oil pipelines respectively, and simulated formation water and simulated formation oil are respectively installed inside. A water storage tank, an oil storage tank, and a liquid container connected to the liquid outlet of the core holder 2 through an external pipeline, the liquid container is marked wi...

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Abstract

The invention discloses a hydraulic pulse-assisted reservoir chemical remedial treatment experiment device and a hydraulic pulse-assisted reservoir chemical remedial treatment experiment method. The experiment device comprises a core holder, an annular pressure supply device, a chemical reagent storage tank, a water storage tank, an oil storage tank and a liquid container, wherein the chemical reagent storage tank, the water storage tank and the oil storage tank are connected with a liquid inlet of the core holder through delivery pipes; the liquid container is connected with a liquid outlet of the core holder; and a hydraulic pulse generating device is arranged on each delivery pipe. The experiment method comprises the following steps of: 1, preprocessing a tested core; 2, measuring the initial permeability of the core by water drive; 3, polluting the core; 4, measuring the permeability of the core by water drive after pollution; 5, performing a hydraulic pulse-assisting chemical reagent remedial treatment experiment; 6, measuring the permeability of the core by water drive after remedial treatment; 7, performing the hydraulic pulse-assisted chemical reagent remedial treatment experiment under the conditions of different frequencies and different amplitudes; and 8, arranging data. The device is rational in design, convenient to arrange, complete in function, simple to operateand good in using effect and can realize pulse fluctuation of the chemical remedial treatment under the action of an injection pressure.

Description

technical field [0001] The invention belongs to the technical field of chemical plugging removal simulation experiments in oil production chambers, and in particular relates to a hydraulic pulse assisted reservoir chemical plugging removal experimental device and an experimental method. Background technique [0002] Due to the need to use a large amount of chemical agents in oilfield exploitation, the stratum is blocked and polluted, and the situation of stratum pollution has developed to deep layers and long distances, so there is an urgent need for an effective chemical plugging method to solve oilfield exploitation. At the same time, the corresponding chemical plugging removal experimental devices and experimental methods are becoming more and more important. However, the current conventional acidification and chemical plugging removal methods have poor plugging removal effects, and their action time is short and the distance into the formation is small, which cannot effe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/27G01N15/08
Inventor 吴飞鹏蒲春生许红星张更
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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