Nano Technologies for Improved Oil & Gas Recovery

Nano Technologies for Improved Oil & Gas Recovery

Nano Technologies for Improved Oil & Gas Recovery Nanoparticle perspective. SARS virus human T-cell lymphotropic virus Nano Scale Chemical Delivery System for Oil & Gas Applications*

Evolved from drug delivery technologies developed in pharmaceutical industry. Using nanoparticles (polyelectrolyte complexes) to entrap oil & gas field chemicals. Able to penetrate deep into formation rock (particle size in nanometer range). Change of nanoparticle surface charge by altering mixing sequence. Controlled release of chemicals achieved by engineering compositions of nanoparticles. * KU Patent Pending

Potential Applications for Oil & Gas Industry Any active agent capable of generating a binding event with nanoparticles. Examples: Metal ions (single and multivalent) Gel Breakers (Enzymes, Oxidizers) Scale inhibitors Corrosion inhibitors Surfactants Etc. What are we looking for in nano-carriers and other nano systems? Environmentally friendly - non-toxic

- biodegradable Cost effective Compatible with hostile underground environments - pH - temperature & pressure - salinity Compatible with reservoir rock and fluids Able to control propagation in reservoir rock Able to entrap and protect active during placement Able to control/delay the release of active Able to scale up to field scale Example Application in Improved Oil & Gas Recovery Polymer gels have been used extensively to improve sweep efficiency by blocking high conductivity channels during enhanced oil recovery

operations. Cr(III) crosslinks with Partially Hydrolyzed Polyacrylamide polymer (HPAM) to form a strong gel. Once gelled, can no longer propagate in formation rock. Gelation time too short (< 30 min.) to place gel deep into formation rock. Polyelectrolyte complex nanoparticles can entrap and control the release of Cr(III) to delay the onset of gelation. Process of Entrapping Active Agents in Nanoparticles Polycation Polyanion MIX

Nanoparticles + Cr(III) Cr(III) Characterization of Nanoparticles Sample Cr(III) Nanoparticles Diameter nm Zeta Potential mV

Entrapment Efficiency % 140.63.6 16.121.24 95.9 Laser Particle Size & Zeta Potential Analyzer Controlled Release of Crosslinking Agent (Delay Gelation of Cr(III)-HPAM Gel) Gelant Composition

5,000 ppm HPAM (Mw = 6,000 kDa) + Nanoparticles loaded with 100 ppm Cr(III) + 1%(w/w) NaCl +100 ppm NaN3, pH=9.45 Gelant HPAM HPAM 5,000 ppm Cr(III) 100 ppm Nanoparticles + Cr(III) Delayed Gelation of HPAM Gel Using

Entrapped Cr(III) 1050 Top of scale Viscosity (cp) 1000 50 40 o 40C o

60C o 80C 30 20 0 5 10 15 20 150 200 250 Time (h) Gelation time at 40 C was up to 10 days In contrast Control gelants consisting of 5,000 ppm HPAM and 100 ppm Cr (as CrCl3 6H2O) formed gels in less than 5 min Other Example Application for Oil & Gas Industry

Fracturing fluid cleanup Entrap breaker with nanoparticles and pump with fracturing fluid Electrostatic repulsion between like-charged nanoparticles insure suspension and even distribution in fracturing fluid. Evenly distributed breaker insures effective breakdown of fracturing fluid when released Breaker release can be controlled until desired elapsed time (e,g., 1 day)

Recently Viewed Presentations

  • Welcome to Back to School Night!

    Welcome to Back to School Night!

    Each student is required to keep a Reading Response Journal, Word Study Notebook, and Language Notebook. All of these materials will be used to help your child become a proficient reader and writer. Your child should be reading for AT...
  • Chapter 4 Repetition Structures - KSU Faculty

    Chapter 4 Repetition Structures - KSU Faculty

    Sentinel-Controlled while Loop. Used when exact number of entry pieces is unknown, but last entry (special/sentinel value) is known. i.e. the user uses a special value called a sentinel value to indicate "end of data entry." The sentinel value must...
  • Population Ecology Notes - Columbia Public Schools

    Population Ecology Notes - Columbia Public Schools

    Defined: Maximum population size that a particular environment can support over time. Carrying capacity results from the interaction between biotic potential and environmental resistance. Biotic . Potential. Environmental Resistance
  • Administrative law ADL 2601 - lawblogsa

    Administrative law ADL 2601 - lawblogsa

    Administrative law ADL 2601 An overview and revision 2013 Internal control of administrative action Unit 11 Forms, advantages and exceptions Forms of internal control: - Control by superior/senior administrators or specially constituted bodies/institutions.
  • Project Financing -

    Project Financing -

    Prof. Ian GIDDY Stern School of Business New York University Asset-Backed and Project Financing Collateralized debt Securitized loans Non-recourse project debt Basic question: Why should a company segregate the cash flows from a particular business, and make it self-financing?
  • Oral Tradition Comparison Unit NOTES: What We Do

    Oral Tradition Comparison Unit NOTES: What We Do

    Alliterative verse & Consonance. Alliteration - is the repetition of initial sounds in neighboring words. Consonance-is the repetition of consonant sounds, but not vowels, as in assonance. Oft ScyldScefingsceapenapraetum, Monegummaegpummeodo-setlaofteah;
  • 12 Ways to Visualize Your Slides Using PowerPoint Design Elements

    12 Ways to Visualize Your Slides Using PowerPoint Design Elements

    Name field. 7. and. click on Save. Congratulation, now you have successfully set up your default font! 5. 6. 7. Delete/Hide this instruction slide when you are finalizing the template. If you are planning on using this template, but you...
  • Mystery Powers -

    Mystery Powers -

    Mystery Powders. During this unit we will not use the sense of taste. Unless you are working in a Test Kitchen taste is not safe in the laboratory.