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Method for simulating collapse accumulation reservoir body bottom water drive oil extraction

A technology for reservoirs and bottom water, applied in the direction of fluid extraction, earthwork drilling, wellbore/well components, etc., to achieve high accuracy of simulation results and short experiment period

Inactive Publication Date: 2020-05-08
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no feasible method for studying the coning law of bottom water in the prior art

Method used

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  • Method for simulating collapse accumulation reservoir body bottom water drive oil extraction
  • Method for simulating collapse accumulation reservoir body bottom water drive oil extraction
  • Method for simulating collapse accumulation reservoir body bottom water drive oil extraction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Fill volume in the first barrel body 11 and be 20-30cm 2 Homogeneous small-volume limestone gravel, in order to simulate the collapsed accumulation body, inject 2500ml of original geological reserves into the first barrel body 11, set the bottom water driving speed of the bottom water driving system to 60ml / min, and start the By describing the bottom water driving system and the fluid output metering system, the process of bottom water driving oil production in the collapsed accumulation body can be simulated, and the production dynamic law of the collapsed accumulation body under the condition that the bottom water driving speed is 60ml / min can be obtained.

[0044] In this example, when the driving speed of the bottom water is 60ml / min, the experiment shows that the liquid production rate rises suddenly 35 minutes after the start of the experiment, and the pressure when the bottom water breaks through is 6384Pa.

Embodiment 2

[0046] Fill volume in the first barrel body 11 and be 20-30cm 2 Homogeneous small-volume limestone gravel, in order to simulate the collapsed accumulation body, inject 2500ml of original geological reserves into the first barrel body 11, set the bottom water driving speed of the bottom water driving system to 30ml / min, and start all the By describing the bottom water driving system and the fluid output metering system, the process of bottom water driving oil production in the collapsed accumulation body can be simulated, and the production dynamic law of the collapsed accumulation body under the condition that the bottom water driving speed is 30ml / min can be obtained.

[0047] In this example, when the driving speed of the bottom water is 30ml / min, the experiment shows that the liquid production rate rises sharply 74 minutes after the start of the experiment, and the pressure when the bottom water breaks through is 4791Pa.

Embodiment 3

[0049] Fill volume in the first barrel body 11 and be 20-30cm 2 Homogeneous small-volume limestone gravel, in order to simulate the collapsed accumulation of reservoirs, inject 2500ml of original geological reserves into the first barrel body 11, set the bottom water driving speed of the bottom water driving system to 15ml / min, start all the By describing the bottom water driving system and the fluid output metering system, the process of bottom water driving oil production in the collapsed accumulation body can be simulated, and the production dynamic law of the collapsed accumulation body under the condition that the bottom water driving speed is 15ml / min can be obtained.

[0050] In this example, when the driving speed of the bottom water is 15ml / min, the experiment shows that the liquid production rate rises sharply 151 minutes after the start of the experiment, and the pressure when the bottom water breaks through is 1974Pa.

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Abstract

The invention relates to a method for simulating collapse accumulation reservoir body bottom water driving oil extraction. The method can be used for simulating bottom water reservoir development environments of various different collapse accumulation reservoir bodies and different oil wells, the simulated collapse accumulation reservoir body and prototype achieve very high similarity with a realreservoir in a fluid motion channel, reservoir property, fluid motion form, energy distribution in a system, fluid fluidity ratio and the like, so that convenience is provided for studying the dynamiclaw of oil reservoir development by simulating the bottom water oil reservoir development environment of different oil wells. The method has the advantages of short experiment period, and high simulation result precision and the like.

Description

technical field [0001] The invention relates to the technical field of oil reservoir exploitation, in particular to a method for simulating bottom water-driven oil recovery of a collapsed accumulation body. Background technique [0002] In the development process of bottom water-driven oil recovery in collapsed accumulation reservoirs, it is particularly important to control bottom water coning. At present, due to the complexity of the reservoir structure with collapse accumulation characteristics, it is very difficult to develop such reservoirs. Therefore, the study of the coning law driven by bottom water in collapse accumulation reservoirs has important guidance for the development of collapse accumulation reservoirs with bottom water reservoirs. significance. However, there is no feasible method for studying the coning law of bottom water in the prior art. Contents of the invention [0003] In view of this, the present invention provides a method for simulating botto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/16E21B49/00
CPCE21B43/16E21B49/00
Inventor 王张恒胡文革杨敏潘琳哈迪·侯赛因王婋
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)