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Experimental device for dynamically measuring asphaltene precipitation amount under CO2-crude oil action

A technology of dynamic measurement and experimental equipment, which is applied to the analysis of materials and instruments, can solve the problems of complex equipment, high cost, and long time consumption, and achieve the effect of convenient operation, low cost, and simple equipment

Inactive Publication Date: 2017-08-04
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PVT kettle experiment takes a long time, and the static balance test of the ancient kiln focuses on normal temperature and pressure conditions. The optical analysis and frequency image analysis obtain indirect signals, and the real situation of asphaltene cannot be observed, and the equipment is extremely complicated and expensive.

Method used

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  • Experimental device for dynamically measuring asphaltene precipitation amount under CO2-crude oil action
  • Experimental device for dynamically measuring asphaltene precipitation amount under CO2-crude oil action
  • Experimental device for dynamically measuring asphaltene precipitation amount under CO2-crude oil action

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Dynamic measurement of CO 2 - An experimental device for producing asphaltene precipitation by the action of crude oil, including a reactor 3 and a microscope 6 located above the reactor 3, and the side of the reactor 3 is connected to a CO 2 The piston container 4 is connected with the crude oil piston container 2 on the other side; the microscope 6 is connected with the computer 7 . Reactor 3 can be seen as a high-temperature and high-pressure reactor as a cylinder, and the internal cavity of reactor 3 is also a cylinder. The operating temperature range is 0~100°C, and the maximum pressure is 25Mpa. Reactor 3 includes visual window 31, CO from top to bottom 2 Layer 32 and crude oil layer 33, below are provided with frosted glass sheet 35 and cold light source 34, are used for CO 2 Saturated oil layer provides sufficient light. CO 2 The piston container 4 is connected with the second ISCO pump 5; the crude oil piston container 2 is connected with the first ISCO pum...

Embodiment 2

[0021] Dynamic measurement of CO 2 - An experimental device for producing asphaltene precipitation by the action of crude oil, including a reactor 3 and a microscope 6 located above the reactor 3, and the side of the reactor 3 is connected to a CO 2 The piston container 4 is connected with the crude oil piston container 2 on the other side; the microscope 6 is connected with the computer 7 . Reactor 3 can be seen as a high-temperature and high-pressure reactor as a cylinder, and the internal cavity of reactor 3 is also a cylinder. The operating temperature range is 0~100°C, and the maximum pressure is 25Mpa. Reactor 3 includes visual window 31, CO from top to bottom 2 Layer 32 and crude oil layer 33, below are provided with frosted glass sheet 35 and cold light source 34, are used for CO 2 Saturated oil layer provides sufficient light. CO 2 The piston container 4 is connected with the second ISCO pump 5; the crude oil piston container 2 is connected with the first ISCO pum...

Embodiment 3

[0024] Dynamic measurement of CO 2 - An experimental device for producing asphaltene precipitation by the action of crude oil, including a reactor 3 and a microscope 6 located above the reactor 3, and the side of the reactor 3 is connected to a CO 2The piston container 4 is connected with the crude oil piston container 2 on the other side; the microscope 6 is connected with the computer 7 . Reactor 3 can be seen as a high-temperature and high-pressure reactor as a cylinder as a whole, and the internal cavity of reactor 3 is also a cylinder. The operating temperature range is 0~100°C, and the maximum pressure is 25Mpa. Reactor 3 includes visual window 31, CO from top to bottom 2 Layer 32 and crude oil layer 33, below are provided with frosted glass sheet 35 and cold light source 34, are used for CO 2 Saturated oil layer provides sufficient light. CO 2 The piston container 4 is connected with the second ISCO pump 5; the crude oil piston container 2 is connected with the firs...

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Abstract

The invention provides an experimental device for dynamically measuring the asphaltene precipitation amount under a CO2-crude oil action. The experimental device comprises a reaction kettle and a microscope positioned above the reaction kettle, wherein a CO2 piston-type container is connected to the side surface of the reaction kettle, and a crude oil piston-type container is connected to the other side surface of the reaction kettle; the microscope is connected with a computer. The experimental device has the beneficial effects as follows: the experimental device is simple in device, low in cost and convenient to operate, and an image of a crude oil-CO2 layer can be observed through a CCD camera and the computer in real time; under high pressure, asphaltene precipitating on an acrylic plate can be clearly seen, and particularly a critical pressure point at which the asphaltene precipitates out from a CO2-saturated crude oil layer can be observed; the area of asphaltene precipitates and the size distribution of particles can be measured by using image analysis software, and the precipitation amount under a condition of a small amount of reservoir is measured by an indirect asphaltene precipitation amount measuring method.

Description

technical field [0001] The invention relates to the technical field of crude oil recovery, in particular to a method for dynamically measuring CO 2 -Experimental device for generating asphaltene precipitation by crude oil. Background technique [0002] CO 2 Flooding is a very effective method of enhancing oil recovery, which can not only effectively enhance oil recovery, but also significantly reduce greenhouse gas emissions. in CO 2 After injection into the reservoir, CO 2 It will cause flocculation and precipitation of asphaltene in crude oil, and the precipitated asphaltene will also block the rock pore throat, reduce porosity and permeability, and change the wettability of rock. 2 Flooding has an impact on enhanced oil recovery. Determination of CO 2 CO during flooding 2 The amount of asphaltene precipitation caused by the interaction with crude oil is the key to the study. [0003] During carbon dioxide displacement, CO 2 The dissolution of crude oil causes man...

Claims

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Application Information

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IPC IPC(8): G01N15/04
CPCG01N15/04
Inventor 赵东锋殷丹丹竺柏康高建丰宋付权
Owner ZHEJIANG OCEAN UNIV
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