Device and method for surveying migration law of carbon dioxide during carbon dioxide flooding and sequestration

A technology of carbon dioxide migration, which is applied in the directions of measurement, earthwork drilling, wellbore/well components, etc., can solve the problems that the simulation process of carbon dioxide migration and leakage cannot be realized, etc.

Pending Publication Date: 2019-12-17
PEKING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing technology cannot do this. The carbon dioxide leakage simulation component of the device is set inside the soil. The migration and leakage of carbon dioxide during the oil field displacement process, the migration ...

Method used

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  • Device and method for surveying migration law of carbon dioxide during carbon dioxide flooding and sequestration
  • Device and method for surveying migration law of carbon dioxide during carbon dioxide flooding and sequestration
  • Device and method for surveying migration law of carbon dioxide during carbon dioxide flooding and sequestration

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Experimental program
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Effect test

Embodiment 1

[0054] like figure 1 Shown: A device for measuring the migration of carbon dioxide in carbon dioxide flooding and storage, including an injection system, a sealing chamber clamping system and an information collection system. The sealing chamber clamping system is filled with sand, crude oil and formation water simulation Formation conditions, an injection well 10 and a production well 11 communicating with the bottom of the formation are arranged above it; the injection system is connected to the sealing chamber support system and a certain amount of carbon dioxide is injected through the injection well 10, and the production well 11 is used for The crude oil is discharged to the outside; the information collection system includes a gas detector 17 and an information data processing computer 16, and the gas detector 17 is evenly distributed in the internal space of the sealing box clamping system, and the gas detector 17 and the information data processing computer 16 signal ...

Embodiment 2

[0061] A method for using the device for measuring the migration law of carbon dioxide in the above-mentioned carbon dioxide flooding and storage, comprising the following steps:

[0062] Step 1, adding specific mesh sand into the sealed cavity holder 12;

[0063] Step 2, using a saturation system to saturate the clamping system of the sealed chamber with formation water, crude oil, and air;

[0064]Step 3, using an injection system to inject a certain amount of carbon dioxide from the injection well 10;

[0065] Step 4, record the variation of water production, oil production and gas production at different times through the recovery metering system;

[0066] Step 5, ascertain and count the migration law of carbon dioxide through the information collection system;

[0067] Step 6, when the carbon dioxide reaches the leakage level, the surfactant solution is injected into the injection well 10 through the injection system to block the carbon dioxide.

[0068] In step 1, acc...

Embodiment 3

[0081] like Figure 9 , Figure 10 Shown:

[0082] A data processing method for measuring carbon dioxide migration laws in the above-mentioned carbon dioxide flooding and storage: comprising the following steps:

[0083] 1) Output the data of the concentration of carbon dioxide measured by the gas detector 17 changing with time.

[0084] 2) Determine the three-dimensional coordinates of the gas detector 17 and the three-dimensional coordinates of the injection well 10 and the production well.

[0085] 3) Obtain the carbon dioxide concentration data of each gas detector 17 in the sealed chamber system at a certain time t0.

[0086] 4) By using the three-dimensional coordinates of the gas detector 17 and using the depth of the color to represent the size of the concentration data, a three-dimensional carbon dioxide concentration field map in the sealing ring system at a certain moment can be obtained.

[0087] 5) Establish a three-dimensional carbon dioxide concentration fie...

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Abstract

The invention relates to the technical field of oil-gas field development and carbon dioxide underground storage, in particular to a device and a method for surveying a migration law of carbon dioxideduring carbon dioxide flooding and sequestration. The device comprises an injection system, a seal cavity clamping system and an information collection system; a formation condition is simulated inside the seal cavity clamping system, and an injection well and producing wells communicating with the bottom of a formation are arranged over the seal cavity clamping system; the injection system is connected with the seal cavity clamping system and injects a certain amount of carbon dioxide, and the producing wells are used for discharging crude oil to the outside; and the information collection system includes a gas detector and an information data processing computer, and the gas detector and the information data processing computer are in signal connection. The migration law of carbon dioxide can be simulated and obtained, and real-time plugging is performed when the diffusion range of carbon dioxide reaches a leakage threshold value; and a plugging technology is evaluated and has important significance in leakage prevention and sequestration of carbon dioxide in practical production.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development and carbon dioxide sequestration, and mainly relates to a device and method for measuring the migration law of carbon dioxide in carbon dioxide flooding and sequestration. Background technique [0002] Carbon dioxide flooding has become an important development method for tertiary oil recovery. The wide application of carbon dioxide in petroleum is mainly due to the following advantages. First of all, carbon dioxide can effectively replenish formation energy and solve problems such as difficult water injection in low-permeability reservoirs and rapid water cut rise. Secondly, carbon dioxide has a high solubility in crude oil, which can effectively reduce the viscosity of crude oil and improve the fluidity of crude oil. Finally, carbon dioxide can be miscible with crude oil under a certain pressure, improving reservoir conditions and greatly increasing the recovery of crude ...

Claims

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Application Information

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IPC IPC(8): E21B43/16E21B47/10E21B47/00G09B25/04
CPCE21B43/164E21B47/00E21B47/10G09B25/04Y02P90/70
Inventor 李健温庆志种珊杨富康
Owner PEKING UNIV
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