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A Core Displacement Experimental System Based on Magnetostrictive Acoustic Transducer

A technology of acoustic wave transducer and magnetostriction, which is applied in the direction of wellbore/well components, measurement, production fluid, etc., to achieve the effect of large recovery and optimized technical means

Active Publication Date: 2019-05-24
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the application of acoustic waves to core displacement experiments.

Method used

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  • A Core Displacement Experimental System Based on Magnetostrictive Acoustic Transducer
  • A Core Displacement Experimental System Based on Magnetostrictive Acoustic Transducer
  • A Core Displacement Experimental System Based on Magnetostrictive Acoustic Transducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] (1) Water flooding: Connect the plunger pump to the core, adjust the attitude of the core to be horizontal, inject water to displace the oil layer in the core, and the displacement speed is 3cm 3 / min, the water flooding continues until no more oil is produced, the water flooding recovery reaches the limit, and the water saturation in the core model reaches the maximum value. Record phase time oil production and water production.

[0108] (2) Low-frequency acoustic water flooding: After the water flooding is completed, connect the transducer device to the core through the valve interface, keep the attitude of the core horizontal, open the valve at the interface, and 3 Water is injected into the transducer sealing device at a flow rate of / min. At the same time, the transducer starts to work at a frequency of 104Hz and a power of 300W, and the valve at the outlet end of the core is opened to collect and discharge liquid. When the power of 300W is displaced until the tot...

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Abstract

The invention discloses a rock core displacement experimental system based on a magnetostriction acoustic wave transducer. The rock core displacement experimental system is composed of the magnetostriction acoustic wave transducer, a plunger pump, a liquid storing tank, a rock core model posture adjusting unit, a vacuumizing unit and a flow metering unit. By adopting the system, vacuumizing treatment, saturated water and prepared bound water treatment, magnetostriction electric-acoustic transducer frequency sweeping and rock core model water flooding treatment of a rock core displacement experiment can be completed, after water flooding is completed, the magnetostriction electric-acoustic transducer is started for acoustic wave water flooding treatment, after displacement is finished, water and simulated oil are collected, and quantitative analysis is conducted; and according to the system, the low-frequency acoustic wave generating process generated by the magnetostriction acoustic wave transducer and the water flooding process of a high-water-content oil field are combined, and the oil flooding mode and efficiency of low-frequency acoustic wave water flooding are tested and evaluated.

Description

technical field [0001] The invention relates to the technical field of core displacement experiments, more particularly, refers to a sonic core displacement using a magnetostrictive acoustic wave transducer as a driving source. The application of the magnetostrictive acoustic wave transducer designed by the invention can improve the water injection development effect and recovery rate of oil reservoirs. Background technique [0002] The oil recovery methods that have formed a consensus include primary oil recovery, secondary oil recovery and tertiary oil recovery. Primary oil recovery is an oil recovery method based on the natural energy of the reservoir. Due to the limited energy supply, the recovery rate of primary oil recovery is usually only 5% to 15%, or lower. Secondary oil recovery is to replenish formation energy through water injection or gas / steam injection, so the recovery rate can be increased to 30% to 40%, or higher; tertiary oil recovery is to add "high energ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20E21B47/14E21B49/00
CPCE21B43/20E21B47/14E21B49/00
Inventor 张天丽陶威汪旭李伯辰蒋成保
Owner BEIHANG UNIV
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