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CN-121991676-A - Particle flow regulator and preparation method and application thereof

CN121991676ACN 121991676 ACN121991676 ACN 121991676ACN-121991676-A

Abstract

The invention discloses a particle flow regulator, a preparation method and application thereof, and belongs to the technical field of oilfield chemistry. The particle flow regulator comprises 0.3-2 parts of an aminated carbon quantum dot dispersion liquid, 20-35 parts of a water-based organic silicon modified high-temperature resistant resin emulsion, 2-5 parts of sodium dodecyl diphenyl ether disulfonate, 1-4 parts of caprolactam closed isophorone diisocyanate, 1-4 parts of a polyoxyethylene-polyoxypropylene ether block copolymer, 1-3 parts of an alkaline silica alumina sol, 0.5-2 parts of a silane coupling agent, 0.5-2 parts of sodium tartrate, 0.5-2 parts of sulfonated polyether ether ketone, 0.1-0.5 part of an isothiazolinone derivative and 0.1-0.5 part of a defoaming agent. In addition, the invention also provides a preparation method of the particle flow regulator and application of the particle flow regulator in profile control and water shutoff of oil fields. The particle flow regulator provided by the invention realizes the delayed formation of high-strength non-flowing plugging particles.

Inventors

  • CHEN LIFENG
  • DENG HONGYU
  • CHEN FEIYANG
  • HU YAXUAN
  • HE LONG
  • FANG JICHAO
  • HUANG JINGWEI
  • SHENG GUANGLONG
  • Lei Tianmeng

Assignees

  • 长江大学

Dates

Publication Date
20260508
Application Date
20260311

Claims (10)

  1. 1. The particle flow regulator is characterized by comprising, by weight, 0.3-2 parts of an aminated carbon quantum dot dispersion liquid, 20-35 parts of a waterborne organic silicon modified high-temperature resistant resin emulsion, 2-5 parts of sodium dodecyl diphenyl ether disulfonate, 1-4 parts of caprolactam blocked isophorone diisocyanate, 1-4 parts of a polyoxyethylene-polyoxypropylene ether segmented copolymer, 1-3 parts of an alkaline silica alumina sol, 0.5-2 parts of a silane coupling agent, 0.5-2 parts of sodium tartrate, 0.5-2 parts of sulfonated polyether ether ketone, 0.1-0.5 part of an isothiazolinone derivative, 0.1-0.5 part of a defoaming agent and 60-66 parts of water.
  2. 2. The particle flow regulator according to claim 1, wherein the raw materials comprise, by weight, 0.5-1.5 parts of an aminated carbon quantum dot dispersion liquid, 25-30 parts of an aqueous organosilicon modified high-temperature resistant resin emulsion, 2.5-3.5 parts of sodium dodecyl diphenyl ether disulfonate, 1.5-2.5 parts of caprolactam blocked isophorone diisocyanate, 1.5-2.5 parts of a polyoxyethylene-polyoxypropylene ether block copolymer, 1-2 parts of an alkaline silica alumina sol, 0.8-1.2 parts of a silane coupling agent, 0.8-1.2 parts of sodium tartrate, 0.8-1.2 parts of sulfonated polyether ether ketone, 0.2-0.4 parts of an isothiazolinone derivative, 0.1-0.3 parts of a defoaming agent and 60-66 parts of water.
  3. 3. The particle flow regulator according to claim 1, wherein the raw materials comprise, by weight, 1.5 parts of an aminated carbon quantum dot dispersion liquid, 28 parts of an aqueous organosilicon modified high-temperature-resistant resin emulsion, 3 parts of sodium dodecyl diphenyl ether disulfonate, 3 parts of caprolactam blocked isophorone diisocyanate, 2 parts of a polyoxyethylene-polyoxypropylene ether block copolymer, 2 parts of an alkaline silica alumina sol, 1 part of a silane coupling agent, 1 part of sodium tartrate, 1 part of sulfonated polyether ether ketone, 0.3 part of an isothiazolinone derivative, 0.2 part of an antifoaming agent and 62.17 parts of water.
  4. 4. A particulate flow regulator according to any one of claims 1 to 3, wherein the silane coupling agent is a silane coupling agent KH550.
  5. 5. A particulate flow regulator according to any one of claims 1 to 3, wherein the defoamer is a polyether modified silicone defoamer.
  6. 6. The particulate flow control agent according to any one of claims 1 to 3, wherein the solid phase content of the dispersion of the aminated carbon quantum dots is 18 to 20%, the particle diameter of the carbon quantum dots in the dispersion is 3 to 10nm, and/or the solid phase content of the aqueous silicone modified high temperature resistant resin emulsion is 35 to 40%.
  7. 7. A method of preparing the particulate flow regulator of any one of claims 1-6, comprising the steps of: S1, heating water to 40-50 ℃, sequentially adding sodium dodecyl diphenyl ether disulfonate, polyoxyethylene-polyoxypropylene ether segmented copolymer, sodium tartrate, sulfonated polyether ether ketone and isothiazolinone derivatives under stirring, and stirring until the sodium dodecyl diphenyl ether disulfonate, the polyoxyethylene-polyoxypropylene ether segmented copolymer, the sodium tartrate, the sulfonated polyether ether ketone and the isothiazolinone derivatives are completely dissolved; S2, transferring the aqueous phase dispersion liquid obtained in the step S1 into an emulsifying machine, adding the aqueous organosilicon modified high-temperature resistant resin emulsion under the stirring action, and then shearing and emulsifying at the rotation speed of 2800-3000rpm to form an emulsion base liquid; S3, sequentially adding caprolactam blocked isophorone diisocyanate, a silane coupling agent and a defoaming agent into the emulsion base liquid under the stirring action, and then continuously stirring to obtain the particle flow regulator.
  8. 8. The method for preparing a particulate flow regulator according to claim 7, wherein in step S1, stirring is continued for 15 to 20 minutes at 900 to 1000rpm to form the aqueous dispersion.
  9. 9. The method for preparing a particulate flow regulator according to claim 7, wherein in step S2, the time of the shear emulsification is 10 to 15min.
  10. 10. Use of the particulate flow control agent of any one of claims 1 to 6 or the particulate flow control agent prepared by the preparation method of any one of claims 7 to 9 in profile control and water shutoff in oil fields.

Description

Particle flow regulator and preparation method and application thereof Technical Field The invention relates to the technical field of oilfield chemistry, in particular to a particle flow regulator and a preparation method and application thereof. Background In the middle and later stages of offshore oil field development, oil wells commonly enter a high water content stage and face serious challenges of water control and oil stabilization. Particularly for an oil well with a long horizontal section, the reservoir is strong in heterogeneity, so that serious heterogeneity of the liquid production in the horizontal section is easy to cause, a local high-water-seepage dominant channel is formed, a large amount of injected water or side bottom water is caused to circulate in an ineffective way, and an oil-containing area with middle and low permeability cannot be effectively used. The phenomenon not only greatly reduces the recovery efficiency of crude oil, but also sharply increases the production water treatment cost and the production load of a platform. For blocking the high-permeability water channel, water blocking and profile control agents such as injection particles, gel or polymer microspheres are generally adopted in the industry. However, these conventional plugging agents have revealed significant limitations when applied to offshore high temperature, high salt, heterogeneous, very strong reservoir conditions. The conventional prefabricated rigid particles have poor injectability, are easy to accumulate in near wellbore zones to form filter cakes, are difficult to enter into the deep part of a stratum, have fixed particle sizes, cannot adapt to pore-throat changes, and have limited plugging strength. The gel plugging agent can be pumped, but the gel forming time and strength are obviously influenced by the stratum temperature and mineralization degree, the stability is poor under severe conditions, and once gel forming is carried out, the gel plugging agent is fixed in a near-wellbore zone, so that deep migration and accurate accumulation cannot be realized. The polymer microsphere is used for blocking the pore throat by virtue of water absorption expansion, but the expansion time and the expansion times are difficult to predict accurately, so that premature expansion is accumulated in a near well, or the deep throat cannot be blocked effectively due to insufficient expansion. The expanded gel particles are elastic bodies, and creep deformation is likely to occur under high production pressure difference, so that long-term effective blocking is difficult to realize. Accordingly, there is a strong need in the art for a new water shutoff system that overcomes the above-described drawbacks. The ideal plugging agent has low initial viscosity and excellent injection performance, can enter and penetrate into a high-permeability channeling channel preferentially like liquid, and meanwhile, has intelligent delay and self-adaptation characteristics, namely, phase transition or reaction can only occur under the specific condition of the deep part of a stratum, and high-strength and non-flowing plugging particles are generated in situ, so that accurate and long-acting plugging of a high-permeability interval is realized, subsequent injection fluid is forced to be diverted to a middle-low-permeability oil-containing region, and the final purpose of increasing sweep volume and crude oil recovery is achieved. Therefore, how to realize delayed formation of high-strength, non-flowing plugging particles is a technical problem to be solved in the prior art. Disclosure of Invention The invention aims to overcome the technical defects, and provides a particle flow regulator, a preparation method and application thereof, and solves the technical problem of how to realize delayed formation of high-strength non-flowing plugging particles in the prior art. In order to achieve the technical aim, the technical scheme of the invention provides a particle flow regulator, which comprises, by weight, 0.3-2 parts of an amino carbon quantum dot dispersion liquid, 20-35 parts of a water-based organic silicon modified high temperature resistant resin emulsion, 2-5 parts of sodium dodecyl diphenyl ether disulfonate, 1-4 parts of caprolactam blocked isophorone diisocyanate, 1-4 parts of a polyoxyethylene-polyoxypropylene ether segmented copolymer, 1-3 parts of an alkaline silica alumina sol, 0.5-2 parts of a silane coupling agent, 0.5-2 parts of sodium tartrate, 0.5-2 parts of sulfonated polyether ether ketone, 0.1-0.5 parts of an isothiazolinone derivative, 0.1-0.5 parts of a defoaming agent and 60-66 parts of water. In any embodiment, the raw materials comprise, by weight, 0.5-1.5 parts of an aminated carbon quantum dot dispersion liquid, 25-30 parts of an aqueous organosilicon modified high-temperature resistant resin emulsion, 2.5-3.5 parts of sodium dodecyl diphenyl ether disulfonate, 1.5-2.5 parts of caprolactam blocked isophor