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Skid-mounted gel dispersion production device and gel dispersion, preparation method and application thereof

A technology for jelly dispersion and production device, which is applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problem of increasing the cost of deep adjustment and flooding operation of jelly dispersion, and difficult to achieve medium and high temperature bulk freezing. It can not meet the problems of the use of medium-high-temperature and high-salt oil reservoirs, and achieves the effect of facilitating cyclic shearing, improving the safety performance of on-site production, and having a simple structure.

Active Publication Date: 2019-04-23
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the technology of this invention mainly involves the production of jelly dispersions in industrialized workshops. For complex environments such as tidal flats, hills, and offshore operating platforms, long-distance transportation and high packaging costs have greatly increased the ability of deep control and drive (profile control) of jelly dispersions. Operating costs limit the large-scale application of jelly dispersions in complex reservoirs
In addition, the bulk jelly chemical reaction involved in this patent is only carried out at room temperature, and it is difficult to realize the reaction of the medium-high temperature bulk jelly system, which cannot meet the use of medium-high temperature and high-salt oil reservoirs

Method used

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  • Skid-mounted gel dispersion production device and gel dispersion, preparation method and application thereof

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preparation example Construction

[0051] According to the second aspect of the present invention, there is provided a method for preparing a jelly dispersion, wherein the method is implemented in the above-mentioned equipment. Specifically, the method includes:

[0052] (1) Transport the partially hydrolyzed polyacrylamide and the solution water to the jet mixing system 1, and then jet into the bulk jelly chemical crosslinking reaction system 2 for mixing to obtain an aqueous solution of partially hydrolyzed polyacrylamide;

[0053] (2) The crosslinking agent, coagulant and stabilizer are delivered to the jet mixing system 1, and then jetted to the bulk jelly chemical crosslinking reaction system 2 to contact with the aqueous solution to obtain the bulk jelly gel;

[0054] (3) Utilizing the heating device in the bulk jelly chemical cross-linking reaction system 2 to heat up to a predetermined temperature, and aging the obtained bulk jelly into a glue solution at the predetermined temperature to obtain a pre-jelly disp...

Embodiment 1

[0093] This example is used to illustrate the preparation method of the jelly dispersion of the present invention

[0094] (1) Select a partially hydrolyzed polyacrylamide with a relative molecular weight of 9.85 million and a degree of hydrolysis of 3.8%, add the partially hydrolyzed polyacrylamide and liquid water to the jet 1, jet into the reaction tank 21 and stir for 40 minutes , Formulated into a partially hydrolyzed polyacrylamide solution with a mass fraction of 0.3%.

[0095] (2) Add the phenolic resin prepolymer crosslinking agent, triethanolamine accelerator, and thiourea stabilizer to the partially hydrolyzed polyacrylamide and water mixture prepared in step 1 through the jet 1, so that the phenolic resin prepolymer The mass fraction of polymer crosslinking agent is 0.9%, the mass fraction of triethanolamine accelerator is 0.6%, and the mass fraction of thiourea stabilizer is 0.03%. At room temperature, the mixed solution in the reaction tank 21 is stirred and dispersed...

Embodiment 2

[0103] This example is used to illustrate the preparation method of the jelly dispersion of the present invention

[0104] (1) Select the partially hydrolyzed polyacrylamide with a relative molecular weight of 9.05 million and a degree of hydrolysis of 4.5%, add the partially hydrolyzed polyacrylamide and liquid water into the jet 1, jet into the reaction tank 21 and stir for 30 minutes , Formulated into a partially hydrolyzed polyacrylamide solution with a mass fraction of 0.4%.

[0105] (2) Add the phenolic resin prepolymer crosslinking agent, triethanolamine accelerator, and thiourea stabilizer to the partially hydrolyzed polyacrylamide and water mixture prepared in step 1 through the jet 1, so that the phenolic resin prepolymer The mass fraction of polymer crosslinking agent is 1.0%, the mass fraction of triethanolamine accelerator is 0.5%, and the mass fraction of thiourea stabilizer is 0.04%. At room temperature, the mixed solution in the reaction tank 21 is stirred and dispe...

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Abstract

The invention relates to the field of oilfield profile control and flooding, in particular to a skid-mounted gel dispersion production device and gel dispersion, a preparation method and applicationsthereof. According to the trend of logistics, the skid-mounted gel dispersion production device sequentially comprises a jet mixing system, a bulk gel chemical crosslinking reaction system, a shear grinding system and a storage system, and the skid-mounted gel dispersion production device further comprises an intelligent control system used for regulating the jet mixing system, the bulk gel chemical crosslinking reaction system, the shear grinding system and the storage system, wherein the bulk gel chemical crossslinking reaction system comprises a reaction tank, and a heating device is arranged in the reaction tank. The skid-mounted gel dispersion production device and gel dispersion, and the preparation method thereof have the advantages of realizing rapid cross-linking reaction of bulkgel in medium and high temperature reservoirs, achieving large-scale preparation of multi-scale gel dispersion, and being suitable for continuous production in complex environment such as beaches, hills and offshore operation platforms.

Description

Technical field [0001] The invention relates to the field of oilfield control and flooding, in particular to a skid-mounted jelly dispersion production device, a jelly dispersion, and a preparation method and application thereof. Background technique [0002] Reservoir heterogeneity is the main factor affecting the efficient development of oil reservoirs. To improve the waterflooding development effect of the middle and late oil reservoirs, it is first necessary to control the heterogeneity of the formation. Among various technological measures, polymer injection and polymer-based binary / ternary composite flooding systems, gels, polymer microspheres, etc. are important technical means to realize reservoir control. However, the above technical measures have exposed some problems during the implementation of oil reservoirs and mines, which are affected by factors such as ground injection equipment shear, formation seepage shear, formation physical and chemical properties (temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/508C09K8/512C09K8/588
CPCC09K8/5083C09K8/512C09K8/588E21B33/13C08J3/005C08J3/075C08J2333/26C09K8/887
Inventor 赵光戴彩丽刘合杨海恩何龙李翔易萍张艳辉
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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