News & Events

News
Events
Publication
Books
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Presentations

Presentations

  • Casing Wear Prediction and Prevention, Oct. 21, 2011
    Yanghua (Lily) Xiang and Gefei Liu from Pegasus Vertex, Inc. gave a presentation titled "Casing Wear Prediction and Prevention" during the 2011 CAPA PETROLEUM AND PETROCHEMICAL TECHNICAL SYMPOSIUM on Frinday, October 21, 2011.
  • CT Reach Analysis, Aug., 2011
    Gefei Liu, president of PVI, gave a lunch-n-learn presentation titled "CT Reach Analysis" in Houston (ICoTA USA Chapter), August 9, 2011.
    There were more than 70 people pre-registered and attended this event.
    presentation at ICoTA
  • Comparing the Results of a Full-Scale Buckling Test Program to Actual Well Data: A New Semi-Emprical Buckling Model and Methods of Reducing Buckling Effects, SPE Paper Number:  144535-PP, Mar., 2011
    Authored by Sarah Mitchell and Dr. Norman Bruce Moore, WWT International Inc.; James Franks, Pioneer Natural Resources; and Gefei Liu and Yanghua (Lily) Yang, Pegasus Vertex Inc.
    This paper was prepared for presentation at the SPE Western North American Regional Meeting held in Anchorage, Alaska, USA, May 7-11,2011.
  • Computer Modeling of Cementing Job, Oct., 2010
    2010 Global Drilling Knowledge Expansion Technology Workshop, Marrakech, Morocco, October 17 – 20, 2010.
  • Casing Wear Prediction, Oct., 2010
    2010 Global Drilling Knowledge Expansion Technology Workshop, Marrakech, Morocco, October 17 – 20, 2010.
  • Drilling in Tortuous Directional Wells, Sept., 2010
    Tortuosity Mini-Forum organized by International Association of Directional Drilling (IADD), Houston, USA, September 23, 2010.
  • Torque and Drag Prediction for Deviated Wellbore, Sept., 2008
    September Luncheon, SPE – Gulf Coast Section – Northside Study Group, Houston, USA, September 9, 2008.
  • Torque and Drag Prediction for Deviated Wellbore, May., 2008
    May Luncheon, Canadian Association of Drilling Engineers (CADE), Calgary, Canada, May 21, 2008.
  • Surge Pressure Prediction, Sept., 2002
    September Luncheon, SPE – Gulf Coast Section – Northside Study Group, Houston, USA, September 11, 2002.
  • Computer Modeling of Wellbore Cleanup Operations, Sept., 2002
    September Luncheon, SPE – Gulf Coast Section – Northside Study Group, Houston, USA, September 10, 2002.
  • The Importance of Software for the Successful Application of Underbalanced and Multi-lateral Horizontal Wells, Sept., 1996
    Emerging Technology for Cost Effective Drilling, Colorado Springs, Colorado, September 16 - 17, 1996.
  • Advanced Foam Computer Model Helps in the Design and Analysis of Underbalanced Drilling, Jan., 1996
    ASME Energy Week Conference & Exhibition held in Houston, USA, January 30 - February. 1, 1996.
  • A Study of Free-Fall Phenomenon in Deviated Wellbore Cementing, Jan., 1995
    ASME, PD-Vol.65, Drilling Technology, ASME-ETCE Conference, Houston, Texas, January. 25 - February 1, 1995.
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