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Oilfield displacement material, oilfield displacement method and test preparation device for oilfield displacement material

A preparation device and displacement technology, which can be used in earth-moving drilling, fluid extraction, measurement, etc., and can solve problems such as poor results.

Active Publication Date: 2017-02-22
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical flooding overcomes the influence of reservoir heterogeneity to a certain extent, but the effect is not very good in reservoirs with strong heterogeneity

Method used

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  • Oilfield displacement material, oilfield displacement method and test preparation device for oilfield displacement material
  • Oilfield displacement material, oilfield displacement method and test preparation device for oilfield displacement material
  • Oilfield displacement material, oilfield displacement method and test preparation device for oilfield displacement material

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Embodiment Construction

[0034] The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modifications based on the present invention, and these should be regarded as belonging to the scope of the present invention.

[0035] refer to Figure 1 to Figure 7 As shown, the present invention discloses a test preparation device for oil field displacement, which comprises a casing 1 having a cavity 10, which has a front end 11 and a rear end 12; The dispersion cylinder 2 in the cavity 10, a clearance space 21 is formed between the dispersion cylinder 2 and the housing 1, the dispersio...

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Abstract

The invention discloses an oil field displacement object, an oil field displacement method and a test preparation device of the oil field displacement object. The test preparation device of the oil field displacement object comprises a shell with a cavity, a scattering cylinder contained in the cavity of the shell, a first end mechanism and a second end mechanism. A gap space is formed between the scattering cylinder and the shell, and the scattering cylinder is provided with an inner cavity and is provided with a first hole with the diameter of 4-20 microns. The first end mechanism is arranged at the front end of the shell and is provided with an outlet channel communicated with the gap space. The second end mechanism is arranged at the rear end of the shell and provided with a first inlet channel communicated with the gap space, and a second inlet channel communicated with the inner cavity of the scattering cylinder. The first inlet channel is communicated with a liquid conveying source, and the second inlet channel is communicated with a gas conveying source. By means of the structure and the method, the diameter of gas can reach the micron size, the gas is evenly mixed with liquid, and displacement objects which are evenly arranged are formed.

Description

technical field [0001] The invention relates to the technical field of petroleum development, in particular to an oil field displacement material, an oil field displacement method and a test preparation device for the oil field displacement material. Background technique [0002] Oilfield flooding uses osmosis to replace crude oil in oilfields with a certain flow rate of displacing material under a certain temperature and pressure. In the prior art, the displacing material can be water, chemical agents and the like. [0003] Due to the heterogeneity of the oil layer in the longitudinal and plane, that is, the distribution of the physical properties of the reservoir rocks is uneven, it cannot be propelled uniformly by water flooding, and it is difficult to obtain the best oil displacement effect due to the uneven distribution of permeability. In particular, in reservoirs with severe heterogeneity, the heterogeneity of the oil layer can lead to huge differences in the seepage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B49/00
CPCE21B43/166E21B47/00E21B49/00
Inventor 李实俞宏伟陈兴隆张可许世京李军
Owner PETROCHINA CO LTD
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