Group U2: Kyle Demel Keaton Hamm Bryan Holekamp Rachel Houk

1. Group U2: Kyle Demel Keaton Hamm Bryan Holekamp Rachel Houk

2. Presentation Topics Introduction Research Article Background Experiment Applications Summary Further Applications Additional Research

3. Enhanced Recovery Techniques Gas injection Ultrasonic stimulation Waterflooding/Water injection

4. Wetting

5. Research Article �Experimental study and mathematical model of nanoparticle transport in porous media� Binshan Ju, Tailiang Fan -The following information and graphics are from the listed article unless cited otherwise.

6. Research Topics Studied two-phase fluid flow through sandstone (which has low permeability) Experimented with wetting using polysilicon nanoparticles to achieve better flow through oil reservoirs for enhanced recovery Developed mathematical model for flow through random porous media

7. Two classes by wettability LHPN-lipophobic hydrophilic polysilicon nanoparticles HLPN-hydrophobic lipophilic polysilicon nanoparticles Experimental Studies

8. Particle size from 10 to 500 nm Mean size ~ 70 nm Roughly spherical Pore throat size from 0.5 to 5,000 nm Pore chambers from 5,000 to 63,000 nm Particle and Pore Characteristics

9. Large PN can block pore throats Smaller PN can bridge to block pore throats PN can also adsorb to pore walls Wettability of porous material can be altered by adsorption of PN Effects of PN on Porous Media

10. (A) Wetting angle much larger than p/2 (B) Wetting angle much smaller than p/2 Wettability Change

11. Sandstone cores are taken from drilling wells in H.Z.J. oil field in China Effective permeability is measured before and after treatment with HLPN Effective permeabilities increase 1.6 to 2.1 times Flowability Change

12. Mathematical Model

13. Mass balance is solved for pressure differential Velocity is determined by Darcy�s law PN concentration distribution is obtained from the convection-diffusion-adsorption equation Calculate new values for porosity, absolute permeability, and relative permeability and iterate Solution Method

14. Using hydrophobic lipophilic polysilicon nanoparticles (HLPN) made the surfaces oil-wet Tested on sandstone Used as a method to maintain reservoir pressure Constraints on high and low flow rates Must be economical Cannot damage reservoir

15. The porosity and permeability decline as injection volume increase due to particle adsorption onto pore walls Water injection capacity increases from 0-1.8 PV and then starts to decrease, indicating a possible saturation of the core with particles

16. Optimum at 1.8 PV

17. Used lipophobic hydrophilic polysilicon nanoparticles to make the reservoir water-wet Goal to recover more oil by using water to �push� the oil out

27. Rebuttal Group from U2

30. Reservoir Engineering Review by Group U1- Kamal, John, Robert, Rodrigo to U2

31. Review Group 3: Krista Melish James Kancewick Phillip Keller Mike Jones

32. Presentation Review: Ugrad #2 Presentation Review Good presentation format Introduction, article, applications, further research Moderate amount of eye contact One of the presenters looked mostly at the slides during presentation Adequate use of figures Inconsistency in font sizing Some cases having the font size too small Low to moderate use of �filler phrases� Such as �like� and �uhhhh� Overall Grade: 90 Material Review Article relevant to the application of nanotechnology in reservoir engineering Use of hydrophobic lipophilic polysilicon nanoparticles (HLPN) made the surfaces oil-wet Goal to recover more oil by using water to �push� the oil out Questions for further research: What are the disposal methods for hydrophobic lipophilic polysilicon nanoparticles ? What are the effects of HLPN on materials other than sandstone?

33. Nanotechnology in Reservoir Engineering Reviewer: Group U4

34. The Presentation Nanoparticles can be used to enhance the percentage of oil recovered from the ground. This is done by changing the wettability of the oil reservoir , making it easier for water injection techniques to be used. Effective use of images to describe concepts. Slides contained the information necessary to understand the topic.

35. Nanotechnology in reservoir engineering Review of Team U2 by Team U5 � Jaynesh Shah, Greg Pudewell, Edwin L. Youmsi Pete and John Pack.

36. Oral and Quality of Slides Review The speakers did a good job of speaking without many pauses or filler words They were knowledgeable on the subject, showing they did a lot of research The slides had a consistent theme Try n0t reading off the slides as much At times, a bit wordy

37. Technical Review The presentation was a bit confusing technically Good use of technical jargon Paper selection was relevant and recent There were a lot of equations Highlight the important ones

38. Nanotechnology in Reservoir Engineering Of the lecture presented by Group U2 - Kyle Demel, Keaton Hamm, Bryan Holekamp, Rachel Houk

39. Review � Slides and Oral Presentation Great use of illustrations; they had them on almost every slide. They all dressed nicely and were knowledgeable about their topic. They also maintained eye contact with the audience. There were too many equations presented for us to understand the most relevant ones.

40. Review - Technical The technology presented was using nanoparticles which were either hydrophobic or lycophobic to increase production of oil in a reservoir. The particular particle used would depend on a specific situation. Further research is needed to determine the effects of the nanoparticles on the casing and tubing. Applications could include using this technology in other formations besides sandstone.