Study on preparation of dispersed co-polymer micro-particle gels for deep profile control in bohai bay offshore oilfield
Source abstract
Abstract
ABSTRACT To achieve effective in-depth control of injection water for the heterogeneous reservoir of offshore oilfields, a new profile control agent is developed. The co-polymer is prepared by using the cross-linking method with AM and the cross-linker. After the polymer is treated by grinding control technology, the dispersed co-polymer micro-particle gel (DMG) is prepared. Results show that DMG is made of pseudo-spherical particles, and sizes can be controlled from nm to μm by adjusting shearing rates, and thus indicating a good injectivity. The preparation is easy-handling, economical, heat-resistant, and environmental-friendly. When the concentration of monomer (5%) and AM/MBA mass ratio (250:1) are fixed, the effect of shearing rates and time on the viscosity and particle sizes is tested. Results show that the grinding rate and time have great influence on particle sizes. The experimental results of the plugging effect under simulated formation conditions show that the dispersed co-polymer micro-particle gel has good injectivity, deep migration ability and plugging performance. Under the same dosage, the plugging effect of the dispersed co-polymer micro-particle gel is significantly better than that of polymer gel. The dispersed co-polymer micro-particle gel has great application value in profile adjustment of offshore oilfield in middle and high water cut stage.
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Research context
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
East China University of Science and Technology, China; CNOOC Group, China; State Key Laboratory of Offshore Oil and Gas Exploitation, China
CNOOC Group, China; State Key Laboratory of Offshore Oil and Gas Exploitation, China
Funding
National Science and Technology Major Project of China · Science & Technology Foundation of CNOOC · Important Science & Technology Foundation of China Oilfield Service Limited, CNOOC
References (36)
Show source-provided references
1. “Using screening test results to predict the effective viscosity of swollen superabsorbent polymer particles extrusion through an open fracture”10.1021/ie100917m ↗
2. “A study on the morphology of a dispersed particle gel used as a profile control agent for improved oil recovery”
3. “Application of silicate/polymer water shut-off treatment in faulted reservoirs with extreme high permeability”
4. “Research of phenolic crosslinker gel for profile control and oil displacement in high temperature and high salinity reservoirs”10.1002/app.46075 ↗
5. “Application of dispersed particle gel to inhibit surfactant adsorption on sand”10.1007/s11743-017-1965-5 ↗
6. “Stability, rheological property and oil-displacement mechanism of a dispersed low-elastic microsphere system for enhanced oil recovery”10.1039/C6RA26849H ↗
7. “Investigation on preparation and profile control mechanisms of the dispersed particle gels (DPG) formed from phenol-formaldehyde cross-linked polymer gel”10.1021/acs.iecr.6b00055 ↗
8. “Effects of pore structure on surfactant/polymer flooding-based enhanced oil recovery in conglomerate reservoirs”10.1016/S1876-3804(20)60012-X ↗
9. “Effect of different phenolic compounds on performance of organically cross-linked terpolymer gel systems at extremely high temperatures”10.1021/acs.energyfuels.7b01386 ↗
10. “Application of the Carman-Kozeny correlation to a high‐porosity and anisotropic consolidated medium: the compressed expanded natural graphite”10.1023/A:1010735118136 ↗
11. “Viscosity of the oil-in-water Pickering emulsion stabilized by surfactant-polymer and nanoparticle-surfactant-polymer system”10.1007/s13367-014-0043-z ↗
12. “Effect of profile-control oil-displacement agent on increasing oil recovery and its mechanism”10.1016/j.fuel.2018.10.089 ↗
13. “Controllable synthesis of nano-micro calcium carbonate mediated by additive engineering”10.3390/cryst13101432 ↗
14. “Influence of the primary structure of enzymes on the formation of CaCO3 polymorphs: a comparison of plant (Canavaliaensiformis) and bacterial (Bacilluspasteurii) ureases”10.1021/la051129v ↗
15. “Gas injection for enhanced oil recovery in two-dimensional geology-based physical model of Tahe fractured-vuggy carbonate reservoirs: karst fault system”10.1007/s12182-020-00427-z ↗
16. “A fast and effective method to evaluate the polymer flooding potential for heavy oil reservoirs in Western Canada”10.1016/j.petrol.2013.11.023 ↗
17. “Driving mechanism of low salinity flooding in carbonate rocks”
18. “Influence of very low interfacial tensions on relative permeability”10.2118/7609-PA ↗
19. “The Ce-modified biochar for efficient removal of methylene blue dye: Kinetics, isotherms and reusability studies”10.1016/j.cjche.2024.10.004 ↗
20. “Competitive adsorption of polymer and surfactant at a liquid droplet interface and its effect on flocculation of emulsion”10.1016/j.jcis.2011.07.100 ↗
21. “Come together: molecular details into the synergistic effects of polymer-surfactant adsorption at the oil/water interface”10.1021/acs.jpcb.8b05432 ↗
22. “A review of research progress of in situ polyacrylamide gel for profile control and water plugging”
23. “A preliminary evaluation of inorganic composite profile control and oil displacement agent for high water cut oil fields”10.1590/1517-7076-rmat-2025-0198 ↗
24. “Effect of the surfactant type on the demulsification of the W/O crude oil emulsion produced by surfactant-polymer flooding”10.1021/acsomega.4c03549 ↗
25. “Oil well production prediction based on CNN-LSTM model with self - attention mechanism”10.1016/j.energy.2023.128701 ↗
26. “n-C7 Asphaltenes characterization as surfactants and polar oil from the HLDN model perspective”10.1021/acs.iecr.3c01387 ↗
27. “Exploring the onset of the nonlinear start-up response of wormlike micelles through rheology and rheo-microscopy: banding & scission”10.1016/j.jcis.2025.137725 ↗
28. “Preparation and performance of high-temperature-resistant, degradable inorganic gel for steam applications”10.2118/219775-PA ↗
29. “Polymer flooding: current status and future directions”10.1016/j.petsci.2023.02.002 ↗
30. “New interfacial rheology characteristics measured using a spinning drop Rheometer at the optimum formulation. Part 2. Surfactant-oil-water systems with a high volume of middle‐phase microemulsion”10.1002/jsde.12245 ↗
31. “Instability of emulsions made with surfactant-oil-water systems at optimum formulation with ultralow interfacial tension”10.1021/acs.langmuir.8b01376 ↗
32. “Study on the synergistic effects between petroleum sulfonate and a nonionic- anionic surfactant for enhanced oil recovery”10.3390/en15031177 ↗
33. “Study on microscopic oil displacement mechanism of alkaline-surfactant-polymer ternary flooding”10.3390/ma17184457 ↗
34. “The effect of mixed surfactants on enhancing oil recovery”10.1007/s11743-999-0074-7 ↗
35. “Application of mass spectrometry for study of the adsorption of multicomponent surfactant mixtures at the solid/solution interface”10.1007/s10450-012-9419-x ↗
36. “Solution property investigation of combination flooding systems consisting of gemini-non-ionic mixed surfactant and hydrophobically associating polyacrylamide for enhanced oil recovery”10.1021/ef202005p ↗