1. Paul Sonnier – Chairman
Work Group on Evaluation of NAF Removal and Water-Wetting by Spacers – Winter 2017 Austin, Texas
Paul Sonnier – Chairman

2. Charge
To evaluate and develop methods of determining the ability of spacer systems to remove a film of nonaqueous fluid from a surface and leave the surface water-wet.

3. Round Robin Testing Inconsistent results from participating labs
Procedure
Apply surfactant wash, apply Base Oil, apply surfactant wash
All labs reported 0̊,80̊,0̊
Apply surfactant wash, apply Base Oil, apply water
Half labs reported 0̊, 80̊, 0̊
Half labs reported 0̊, 80̊, 80̊
Possible issue is not sufficient contact time with Base Oil. Initial application of surfactant could be issue.

4. SSST results

5. Pull Test

6. Test fixture

7. Wettability, shear bond, ssst

8. Goniometer Pros Cons Can be used as a quantifiable measurement
Compact and versatile in capturing contact angles
Cons
Instrument not plug and play
15K price range
Broken instrument hard to fix
Only test with solids free fluids
Measures at room temperature only
Not field lab type instrument, more for research

9. Plan forward Questions/Comments
Summarize project to date in a technical report
Questions/Comments

10. RPSEA Acknowledgement Statement
Funding for this project is provided by RPSEA through the “Ultra- Deepwater and Unconventional Natural Gas and Other Petroleum Resources” program authorized by the U.S. Energy Policy Act of RPSEA ( is a nonprofit corporation whose mission is to provide a stewardship role in ensuring the focused research, development and deployment of safe and environmentally responsible technology that can effectively deliver hydrocarbons from domestic resources to the citizens of the United States. RPSEA, operating as a consortium of premier U.S. energy research universities, industry, and independent research organizations, manages the program under a contract with the U.S. Department of Energy’s National Energy Technology Laboratory.