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A high temperature mixing device and method

A high-temperature mixing and mixing unit technology, applied in mixers, chemical instruments and methods, transportation and packaging, etc., can solve the problem that the emulsification performance of oil-displacing agent cannot be evaluated under ultra-high temperature conditions, and the oil-displacing agent system cannot be uniformly mixed. The composition of the oil agent system is complex and other problems, so as to facilitate the mixing conditions and temperature conditions, improve the emulsification mixing effect, and shorten the mixing time.

Active Publication Date: 2022-07-12
青岛金智瑞油气田开发技术发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The emulsification performance of the oil displacement agent system is an important parameter to characterize the oil displacement efficiency. At present, the emulsification performance of the oil displacement agent system can only be mixed manually at medium and low temperatures to form an emulsion, which leads to poor repeatability of the results and cannot be evaluated under ultra-high temperature conditions. Emulsifying performance of oil displacing agent
In addition, when evaluating the flow performance and oil displacement effect of the oil displacement agent, due to the complex composition of the oil displacement agent system, it is necessary to ensure that the various components of the oil displacement agent system are fully mixed and evenly mixed under high temperature and high pressure conditions. At present, oil displacement and related devices cannot Realize uniform mixing of oil displacement agent system under high temperature and high pressure conditions

Method used

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  • A high temperature mixing device and method
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  • A high temperature mixing device and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] The following three types of surfactants are selected for compounding and mixing to obtain a surfactant oil-displacing agent. The surfactants are sodium dodecylbenzenesulfonate (SDBS), hexadecylsulfobetaine (HDAPS) and fat Alcohol polyoxyethyl ether (AEO-7), the mass ratio of the three is 3:2:5.

[0135]In this embodiment, the materials to be mixed are the above three surfactants. Before adding the material to be mixed into the high-temperature mixing device, start the heating unit to preheat to 45°C. After the mixed material is slowly introduced into the mixing tank Y through the feed line for mixing, it is then passed into the piston mixer A in the mixing unit.

[0136] The temperature of the constant temperature box L was raised to 75°C, and the heating unit adopted a programmed temperature increase, and the heating rate was 2°C / min. Ultrasonic oscillation is used for auxiliary mixing to enhance the mixing effect. Among them, the vibration frequency of the piston m...

Embodiment 2

[0150] The materials to be mixed are the components of the ternary compound oil displacement agent: the weak base is sodium carbonate, the mass fraction in the ternary compound oil displacement agent is 0.8%, the dry powder polyacrylamide HPAM, the mass fraction is 0.15%, The surfactant is sodium dodecylbenzene sulfonate (SDBS), with a mass fraction of 0.1%, and the rest is from the field production water of Daqing Oilfield (the production water is groundwater after filtering sediment).

[0151] At room temperature, make the mixture to be mixed at 0.03m 3 The flow rate of / h is passed into the mixed flow tank Y for pre-mixing treatment, and then pressed into the piston mixer A, and ultrasonic vibration is used for auxiliary mixing to enhance the mixing effect. The piston mixer A was mixed with vertical vibration at a speed of 6 rev / min for 15 min, and then ultrasonically mixed for 15 min. Among them, the vibration frequency of the piston mixer A was 20 times / min, and the ampl...

Embodiment 3

[0159] The materials to be mixed are oil phase and water phase. The oil phase is a mixture of dehydrated crude oil extracted from Dongying Oilfield and kerosene uniformly mixed in a ratio of 3:1. The water phase includes surfactant, alkali and on-site production water in Dongying Oilfield (the production water is groundwater after filtering sediment), and the selected surfactants are nonylphenol polyoxyethylene ether NP-50 and dioctyl succinate sulfonate Sodium (AOT), the mass ratio of the two is 7:13, and its mass fraction in the water phase is 0.3%; the alkali is sodium carbonate, and its mass fraction is 0.5%, and the rest is the production water in Dongying Oilfield (the production water). groundwater after filtration of sediment). The volume ratio of oil phase and water phase was 1:1, and the total volume of oil and water was 50 mL.

[0160] Add the material to be mixed directly into the array tube T5, then install the array tube T5 in the high-temperature mixing device...

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Abstract

The present invention provides a high temperature mixing device, which includes a mixing unit, a heating unit, a detection unit and a control unit. Through the piston mixer, combined with the use of mixed flow tank, vibration, rotation and emulsification tank, the mixing effect of high temperature oil displacement agent can be greatly improved, and the emulsification performance evaluation of oil displacement agent can be completed under high temperature conditions. It can meet the requirements of use in industrial scientific research and production.

Description

technical field [0001] The invention belongs to the technical field of oil displacement engineering technology, and particularly relates to a device and method for preparing oil displacement agent by mixing and emulsification under high temperature conditions. Background technique [0002] Oil is a non-renewable resource. Most of the major oil fields in China are in the late stage of water flooding, but more than half of the crude oil remains in the ground. It is necessary to carry out relatively effective tertiary oil recovery technology, which can increase crude oil production by 10%-20%. Technologies such as polymer flooding, ASP flooding and heterogeneous composite flooding are the most widely used technologies in tertiary oil recovery. The quality of the performance characterization methods and results of oil displacement agents is an important factor in judging whether the tertiary oil recovery technology can be applied in the field. in accordance with. [0003] The e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F33/82B01F35/90
Inventor 韩旭吕明王海超李禹羲孟春瑜吕圣佐孙源王迪孔德晶刘思斯穆萨 Z.萨利姆张艺晓
Owner 青岛金智瑞油气田开发技术发展有限公司