Behzad Elahifar

(Former)

1 - 19 out of 19Page size: 20

Research output

  1. 2013
  2. Published

    Effect of Formations Compressive Strength on Drill String Vibrations

    Esmaeili, A., Elahifar, B., Fruhwirth, R. K. & Thonhauser, G., 2013, p. 4237-4240. 4 p.

    Research output: Contribution to conference › Paper › peer-review

  3. Published

    Experimental determination of wellbore diameter and shape (4D imaging of wellbore) by using ultrasonic caliper within different fluids for real-time drilling application

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2013, In: Oil gas European magazine. 39, 1, p. 16-19 4 p.

    Research output: Contribution to journal › Conference article › peer-review

  4. Published

    Formation Prediction Model based on Drill String Vibration Measurements Using Laboratory Scale Rig

    Esmaeili, A., Elahifar, B., Fruhwirth, R. K. & Thonhauser, G., 2013. 9 p.

    Research output: Contribution to conference › Paper › peer-review

  5. Published

    Wellbore Instability Detection in Real Time Using Ultrasonic Measurements

    Elahifar, B., 2013

    Research output: Thesis › Doctoral Thesis

  6. Published

    Wellbore Instability Monitoring by Using 4D Imaging of Ultrasonic Caliper Logs in Real Time Drilling

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2013, Wellbore Instability Monitoring by Using 4D Imaging of Ultrasonic Caliper Logs in Real Time Drilling. p. 4346-4353 8 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  7. 2012
  8. Published

    Accuracy of Ultrasonic Sensor in Caliper Log

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2012, (I2MTC), 2012 IEEE International. p. 449-453

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  9. Published

    Accuracy of ultrasonic sensor in caliper log

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2012. 5 p.

    Research output: Contribution to conference › Paper › peer-review

  10. Published

    An Energy Based Comparision of Alternative Drilling Methods

    Esmaeili, A. & Elahifar, B., 2012.

    Research output: Contribution to conference › Poster › Research › peer-review

  11. Published

    Axial Vibration Monitoring in Laboratory Scale Using CDC miniRig and Vibration Sensor Sub

    Esmaeili, A., Elahifar, B., Fruhwirth, R. K. & Thonhauser, G., 2012, IEEE International. p. 512-517

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  12. Published

    Determining the Accuracy of Ultrasonic Caliper Measurements for Real Time Drilling Application

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2012, Society of Petroleum Engineers. p. 1-11

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  13. Published

    Experimental Determination of Wellbore Diameter and Shape by Using Ultrasonic Caliper Within Different Fluids for Real Time Drilling Application

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2012, Celle Drilling 2012. p. 1-2

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  14. Published

    Experimental Evaluation of Real-Time Mechanical Formation Classification using Drill String Vibration Measurements

    Esmaeili, A., Elahifar, B., Fruhwirth, R. K. & Thonhauser, G., 2012, SPE Annual Technical Conference and Exhibition. p. 1-13

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  15. Published

    Laboratory Scale Control of Drilling Parameters to Enhance Rate of Penetration and Reduce Drill String Vibration

    Esmaeili, A., Elahifar, B., Fruhwirth, R. K. & Thonhauser, G., 2012, SPE Saudi Arabia Section Technical Symposium and Exhibition. p. 1-9

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  16. Published

    ROP Modeling Using Neural Network and Drill String Vibration Data

    Esmaeili, A., Elahifar, B., Fruhwirth, R. K. & Thonhauser, G., 2012, SPE Kuwait International Petroleum Conference and Exhibition. p. 1-13

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  17. Published

    Real Time Measurement of Borehole Shape and Diameter by Using Ultrasonic Caliper in Different Drilling Fluid and Wellbore Conditions for Detecting Instabilities

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2012, Society of Petroleum Engineers. p. 1-7

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  18. Published

    Studying the ultrasonic caliper results for detecting the wellbore instability in real time drilling

    Elahifar, B., 2012.

    Research output: Contribution to conference › Poster › Research › peer-review

  19. Published

    Using Neural Network Technique to Study the Effect of Formation Mechanical Properties on Dynamic Behavior of Drill String

    Esmaeili, A., Elahifar, B., Fruhwirth, R. K. & Thonhauser, G., 2012, Celle Drilling 2012. p. 1-2

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  20. 2011
  21. Published

    An Energy Based Comparison of Alternative Drilling Methods

    Elahifar, B., Esmaeili, A., Prohaska-Marchried, M. & Thonhauser, G., 2011, SPE/IADC Middle East Drilling Technology Conference and Exhibition. p. 1-13

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  22. Published

    An Energy Based Comparison of Laser Drilling Methods

    Esmaeili, A., Elahifar, B., Prohaska-Marchried, M. & Thonhauser, G., 2011, Proceedings Celle Drilling 2011. p. 1-1

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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