Jiao lu bo peng mingyuan li meiqin lin zhaoxia dong and jiafeng dong
This presentation is the property of its rightful owner.
Sponsored Links
1 / 16

Jiao Lu, Bo Peng, Mingyuan Li, Meiqin Lin, Zhaoxia Dong and Jiafeng Dong PowerPoint PPT Presentation


  • 86 Views
  • Uploaded on
  • Presentation posted in: General

China University of Petroleum, Beijing. In-depth Profile Control Property of Pre-crosslinked Polymer Dispersion. Jiao Lu, Bo Peng, Mingyuan Li, Meiqin Lin, Zhaoxia Dong and Jiafeng Dong. Enhanced Oil Recovering Research Centre, China University of Petroleum, Beijing, China. Outline.

Download Presentation

Jiao Lu, Bo Peng, Mingyuan Li, Meiqin Lin, Zhaoxia Dong and Jiafeng Dong

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Jiao lu bo peng mingyuan li meiqin lin zhaoxia dong and jiafeng dong

China University of Petroleum, Beijing

In-depth Profile Control Property of Pre-crosslinked Polymer Dispersion

Jiao Lu, Bo Peng, Mingyuan Li, Meiqin Lin,

Zhaoxia Dong and Jiafeng Dong

Enhanced Oil Recovering Research Centre,

China University of Petroleum, Beijing, China


Outline

Outline

China University of Petroleum, Beijing

  • Background

  • Size distribution and microstructure of PCPD

  • Plugging property / In-depth profile control property of PCPD

  • Conclusion


Jiao lu bo peng mingyuan li meiqin lin zhaoxia dong and jiafeng dong

China University of Petroleum, Beijing

Background

  • Reservoir heterogeneity: the biggest challenge to oil recovery

  • Application of in-depth profile control agents, can improve amount of oil recoverable by displacement

    in heterogeneous reservoirs

  • A new pre-crosslinked polymer dispersion for in-depth profile control was developed in our laboratory


Jiao lu bo peng mingyuan li meiqin lin zhaoxia dong and jiafeng dong

China University of Petroleum, Beijing

Background

Pre-crosslinked polymer dispersion (PCPD):

  • Prepared by water/water dispersion polymerization

  • A latex product

  • The pre-crosslinked polymer coils have excellent plugging performance

  • We can control the size of the coils by adjusting reaction conditions, crosslinking ratio, and so on


Outline1

Outline

China University of Petroleum, Beijing

  • Background

  • Size distribution and microstructure of PCPD

  • Plugging property / In-depth profile control property of PCPD

  • Conclusion


Jiao lu bo peng mingyuan li meiqin lin zhaoxia dong and jiafeng dong

China University of Petroleum, Beijing

Size distribution of PCPD

Number-size distribution of 50mg/L PCPD

Number-size distribution of 50mg/L polymer Dispersion (PD)


Microstructure of pcpd

Microstructure of PCPD

China University of Petroleum, Beijing

Aggregates of severalpre-crosslinked polymer coils

Dried 10mg/L PCPD Magnification: 100 000; scale: 1um


Outline2

Outline

China University of Petroleum, Beijing

  • Background

  • Size distribution and microstructure of PCPD

  • Plugging property / In-depth profile control property of PCPD

  • Conclusion


Plugging property of pcpd

Plugging property of PCPD

China University of Petroleum, Beijing

Filtrating installation

Pressure: 50kPa; pore diameter of membrane: 1.2um

(a)100 mg/L PD, 2000mg/L NaCl;

(b)100 mg/L PCPD, 2000mg/L NaCl


Plugging property of pcpd1

Plugging property of PCPD

China University of Petroleum, Beijing

r > R R > r >0.46 Rr = 0.46 Rr < 0.46 R

Plugging Mechanism of the membrane filtration

The green part is the pore with radius R, the blue part is the particles with radius r


Plugging property of pcpd2

Plugging property of PCPD

China University of Petroleum, Beijing

Nano pre-crosslinked polymer coils

Strong plugging property

Hydrodynamic diameter Dh

Prediction of microstructure of pre-crosslinked polymer coils

in extremely dilute aqueous solution


Plugging property of pcpd3

Plugging property of PCPD

China University of Petroleum, Beijing

Effect of concentration on plugging performance

(A)50 mg/L; (B) 75 mg/L; (C)100mg/L;

(D) 125m g/L; (E) 150mg/L

Stability of PCPD

Filtration volume vs filtration time

100mg/L PCPD placed under room temperaturewithin 30 days


Jiao lu bo peng mingyuan li meiqin lin zhaoxia dong and jiafeng dong

Effect of permeability on in-depth profile control property Concentration: 750 mg/L PCPD , 2000 mg/L NaCl; (a) flow rate: 0.4mL/min; (b) flow rate: 0.8mL/min;

China University of Petroleum, Beijing

In-depth profile control property of PCPD

permeability: 2.25μm2

permeability: 6.04μm2


Jiao lu bo peng mingyuan li meiqin lin zhaoxia dong and jiafeng dong

Effect of concentration on in-depth profile control property 2000 mg/L NaCl; flow rate: 0.8mL/min;(a) permeability: 6.04μm2; (b) permeability: 5.50μm2

China University of Petroleum, Beijing

In-depth profile control property of PCPD

concentration: 750 mg/L PCPD

concentration: 1000 mg/L PCPD


Conclusion

Conclusion

China University of Petroleum, Beijing

  • PCPD consists of nano crosslinked polymer coils dispersed in aqueous solution media

  • PCPD has excellent plugging performance, plugging efficiency is enhanced with the increase of concentration of PCPD

  • PCPD shows high flow resistance and can pass though sandpacks with high permeability


Thanks for your attention

Thanks for your attention!

China University of Petroleum, Beijing


  • Login