0
Research Papers: Petroleum Engineering

Practical Approach to Functional Testing and Analytical Modeling of Axial Oscillation-Supported Drillstrings

[+] Author and Article Information
Emmanuel Omojuwa

University of Oklahoma,
100 E. Boyd St, Norman, OK 73071;
JA Oilfield Manufacturing Inc., 2101 SE 67th St,
Oklahoma City, OK 73149
e-mail: emmajuwa@gmail.com

Ramadan Ahmed

University of Oklahoma,
100 E. Boyd St, Norman, OK 73071
e-mail: r.ahmed@ou.edu

James Acquaye

JA Oilfield Manufacturing Inc., 2101 SE 67th St,
Oklahoma City, OK 73149
e-mail: james@jaoilfield.com

Contributed by the Petroleum Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received September 17, 2018; final manuscript received March 15, 2019; published online April 4, 2019. Assoc. Editor: Gensheng Li.

J. Energy Resour. Technol 141(9), 092906 (Apr 04, 2019) (11 pages) Paper No: JERT-18-1720; doi: 10.1115/1.4043245 History: Received September 17, 2018; Accepted March 16, 2019

Drillstrings that include one or more axial oscillation tools (AOTs) are referred to as axial oscillation-supported drillstrings. Downhole vibrations induced by these tools in the drillstring are the most efficient method for friction reduction and improving axial force transfer in high-angle and extended-reach wells. Functional testing of axial oscillation tools prior to downhole operations and modeling the dynamic response of axial oscillation-supported drillstring systems are required to predict the performance and functionality of AOTs. This study presents a practical approach for functional testing of axial oscillation tools and a new analytical model for predicting the dynamic response of axial oscillation-supported drillstrings operating at surface conditions. The axial oscillation-supported drillstring is modeled as an elastic continuous system subjected to viscous damping, frictional contact, and displacement (support excitation). The functional test is a unique experimental test procedure designed to measure the pressure drop, pressure fluctuations, and axial displacement of an axial oscillation tool while varying the flow rate and the spring rate of the tool. The introduction of the spring rate as a variable in the new model and functional testing is unique to this study and not considered in the existing literature. Axial displacement and acceleration predicted from the new model closely agrees with the results obtained from the functional tests. The accuracy of the model is also validated with the results of two previously published functional tests. The comparisons demonstrate an average deviation of approximately 14.5% between predictions and measurements. The axial displacement and pressure drop of AOT increased with flow rate or oscillation frequency. The amplitude of axial displacement increased with frequency because of increased pressure drop.

FIGURES IN THIS ARTICLE
<>
Copyright © 2019 by ASME
Your Session has timed out. Please sign back in to continue.

References

Kamel, M. A., Elkatatny, S., Mysorewala, M., Al-Majed, A., and Elshafei, M., 2017, “Adaptive and Real-Time Optimal Control of Stick–Slip and Bit Wear in Autonomous Rotary Steerable Drilling,” ASME J. Energy Resour. Technol., 140(3), p. 032908. [CrossRef]
Barakat, E. R., 2005, “An Experimental Study and Modeling of the Effect of Hydraulic Vibrations on Axial Force Transfer in Horizontal Wellbores,” Report Prepared for TUDRP Advisory Board Meeting, Tulsa, OK, Nov. 14–15.
Newman, K., Burnett, T., Pursell, J. C., and Gouasmia, O., 2009, “Modeling the Affect of a Downhole Vibrator,” SPE/ICoTA Coiled Tubing & Well Intervention Conference and Exhibition, The Woodlands, TX, Mar. 31–Apr. 1, SPE Paper No. SPE-121752-MS.
McCarthy, J. P., Stanes, B., Rebellon, J. E., Leuenberger, G., Clark, K., Kollker, C., and Grabski, L., 2009, “A Step Change in Drilling Efficiency: Quantifying the Effects of Adding an Axial Oscillation Tool Within Challenging Wellbore Environments,” SPE/IADC Drilling Conference and Exhibition, Amsterdam, The Netherlands, Mar. 17–19, SPE Paper No. SPE-119958-MS.
Gee, R., Hanley, C., Hussain, R., Canuel, L., and Martinez, J., 2015, “Axial Oscillation Tools vs Lateral Vibration Tools for Friction Reduction—What’s the Best Way to Shake the Pipe?,” SPE/IADC Drilling Conference and Exhibition, London, England, UK, Mar. 1–3, SPE Paper No. SPE-178792-MS.
Al Ali, A., Barton, S., and Mohanna, A., 2011, “Unique Axial Oscillation Tool Enhances Performance of Directional Tools in Extended Reach Applications,” SPE Brasil Offshore Conference and Exhibition, Macaé, Brazil, June 14–17, SPE Paper No. SPE-143216-MS.
Baez, F., and Alali, A., 2011, “Drilling Performance Improvements in Gas Shale Plays Using a Novel Drilling Agitator Device,” AADE National Technical Conference and Exhibition, Houston, Texas, Apr. 12–14, AADE Paper No. AADE-11-NTCE-47.
Khan, K. Z., 1983, “Longitudinal and Torsional Vibration of Drill Strings,” M.S. thesis, Massachusetts Institute of Technology, Massachusetts, Boston.
Li, C., 1987, “An Analytical Study of Drill String Vibrations,” e-Library of Society of Petroleum Engineers.
Lear, W. E., and Dareing, D. W., 1990, “Effect of Drillstring Vibrations on MWD Pressure Pulse Signals,” ASME J. Energy Resour. Technol., 112(2), pp. 84–89. [CrossRef]
Lee, H. Y., 1991, “Drillstring Axial Vibration and Wave Propagation in Boreholes,” Ph.D. thesis, Massachusetts Institute of Technology, Massachusetts, Boston.
Jogi, P. N., Macpherson, J. D., and Neubert, M., 2002, “Field Verification of Model-Derived Natural Frequencies of a Drill String,” ASME J. Energy Resour. Technol., 124(3), pp. 154–162. [CrossRef]
Rashed, G., Ghaja, R., and Hashemi, S. J., 2007, “An Analytical Model for Drillstring Axial Vibration,” International Congress on Sound & Vibrations, Cairns, Australia, July 9–12.
Ghasemloonia, A., Rideout, D. G., and Butt, S. D., 2013, “Vibration Analysis of a Drillstring in Vibration-Assisted Rotary Drilling: Finite Element Modeling With Analytical Validation,” ASME J. Energy Resour. Technol., 135(3), p. 032902. [CrossRef]
Samuel, R., and Yao, D., 2013, “DrillString Vibration With Hole-Enlarging Tools: Analysis and Avoidance,” ASME J. Energy Resour. Technol., 135(3), p. 032904. [CrossRef]
Forster, I., and Grant, R., 2012, “Axial Excitation and Drill String Resonance as a Means of Aiding Tubular Retrieval—Small-Scale Rig Testing and Full-Scale Field Testing,” IADC/SPE Drilling Conference and Exhibition, San Diego, CA, Mar. 6, SPE Paper No. SPE-151096-MS.
Forster, I., 2015, “Axial Excitation Tool String Modeling,” ASME International Conference on Ocean, Offshore and Arctic Engineering, St. John’s, Newfoundland, Canada, May 31–June 5.
Shor, R. J., Dykstra, M. W., and Hoffmann, O. J., 2015, “For Better or Worse: Applications of the Transfer Matrix Approach for Analyzing Axial and Torsional Vibration,” SPE/IADC Drilling Conference and Exhibition, London, England, UK, Mar. 17–19, SPE Paper No. SPE-173121-MS.
Al Dushaishi, M. F., Nygaard, R., and Stutts, D. S., 2017, “An Analysis of Common Drill Stem Vibration Models,” ASME J. Energy Resour. Technol., 140(1), pp. 012905. [CrossRef]
Patil, P., and Teodoriu, C., 2012, “Model Development of Torsional Drillstring and Investigating Parametrically the Stick-Slips Influencing Factors,” ASME J. Energy Resour. Technol., 135(1), p. 013103. [CrossRef]
Tian, J., Yang, Z., Li, Y., Yang, L., Wu, C., Liu, G., and Yuan, C., 2016, “Vibration Analysis of New Drill String System With Hydro-Oscillator in Horizontal Well,” J. Mech. Sci. Technol., 30(6), pp. 2443–2451. [CrossRef]
Barakat, E. R., Miska, S. Z., Yu, M., Simionescu, P. A., and Takach, N. E., 2007, “The Effect of Hydraulic Vibrations on Initiation of Buckling and Axial Force Transfer for Helically Buckled Pipes at Simulated Horizontal Wellbore Conditions,” SPE/IADC Drilling Conference, Amsterdam, The Netherlands, Feb. 20–22, SPE Paper No. SPE-105123-MS.
Martinez, J., Carson, C. R., Canuel, L. A. P., Burnett, T. G., and Gee, R., 2013, “New Technology Enables Rigs With Limited Pump Pressure Capacity to Utilize the Latest Friction Reduction Technology,” SPE Eastern Regional Meeting, Pittsburgh, PA, Aug. 20–22, SPE Paper No. SPE-165700-MS.
Clausen, J. R., Schen, A. E., Forster, I., Prill, J., and Gee, R., 2014, “Drilling With Induced Vibrations Improves ROP and Mitigates Stick/Slip in Vertical and Directional Wells,” IADC/SPE Drilling Conference and Exhibition, Fort Worth, TX, Mar. 4–6, SPE Paper No. SPE-168034-MS.
Schultz, R., 2013, “Vibratory Downhole Tool Technologies with Application to Horizontal Drilling and Casing Installation,” http://www.horizontal-drilling-shale-plays.com/media/downloads/31-roger-schultz-engineering-manager-tts-drilling-solutions-thrutubing-solutions.pdf, Accessed February 2, 2013.
Ying, Z., Zhanghua, L., Abdelal, G. F., and Tiejun, L., 2017, “Numerical and Experimental Investigation on Flow Capacity and Erosion Wear of Blooey Line in Gas Drilling,” ASME J. Energy Resour. Technol., 140(5), p. 054501. [CrossRef]
Dareing, D. W., and Livesay, B. J., 1968, “Longitudinal and Angular Drill-String Vibrations With Damping,” ASME J. Energy Resour. Technol., 90(4), pp. 671–679.
Paranjpe, R. S., 1990, “Dynamic Analysis of a Valve Spring With a Coulomb-Friction Damper,” ASME J. Mech. Des., 112(4), pp. 509–513. [CrossRef]
Bandstra, J. P., 1983, “Comparison of Equivalent Viscous Damping and Nonlinear Damping in Discrete and Continuous Vibrating Systems,” ASME J. Vib. Acoust. Stress Reliab., 105(3), pp. 382–392. [CrossRef]
Leissa, A. W., and Qatu, M. S., 2011, Vibrations of Continuous Systems, McGraw-Hill, New York.

Figures

Grahic Jump Location
Fig. 1

Inefficiencies caused by high friction in extended-reach wells

Grahic Jump Location
Fig. 2

Design layout of an axial oscillation tool

Grahic Jump Location
Fig. 3

Relative positions of the orifices and pressure pulses (adopted from NOV, 2006)

Grahic Jump Location
Fig. 4

Stacking configuration of the disk springs: (a) 2 × 2 and (b) 3 × 3

Grahic Jump Location
Fig. 5

Model for uphole oscillations showing the free body diagram of a differential element

Grahic Jump Location
Fig. 6

Experimental setup used for testing AOT

Grahic Jump Location
Fig. 7

Schematic of the flow loop

Grahic Jump Location
Fig. 8

Displacement-marker

Grahic Jump Location
Fig. 9

Load versus displacement of spring stacking of (a) 2 × 2 stack and (b) 3 × 3 stack

Grahic Jump Location
Fig. 10

Relationship between the frequency of pressure fluctuation and flow rate

Grahic Jump Location
Fig. 11

Pressure drop versus time for different stacking configurations and flow rates: (a) 2 × 2 spring stacking configuration at 200 gpm, (b) 2 × 2 spring stacking configuration at 400 gpm, (c) 3 × 3 spring stacking configuration at 200 gpm, and (d) 3 × 3 spring stacking configuration at 400 gpm

Grahic Jump Location
Fig. 12

Model versus test data for AOT-1: (a) 2 × 2 spring stacking configuration at 200 gpm, (b) 2 × 2 spring stacking configuration at 400 gpm, (c) 3 × 3 spring stacking configuration at 200 gpm, and (d) 3 × 3 spring stacking configuration at 400 gpm

Grahic Jump Location
Fig. 13

Measured and predicted displacement versus flow rate for AOT-2

Grahic Jump Location
Fig. 14

Comparison of model predictions with experimental measurements for AOT-3

Tables

Errata

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In