The mechanism of buckling has been extensively studied in pipes and tubings. But these studies more often has been restricted to continuous or straight body pipes. In reality most pipes and other drillstring elements have end couplings or connections known as tool joint. Tool joint presence changes the annular geometry, hydraulics and stress distribution of the pipe or tubulars in the wellbore. Modelling drillstring in highly deviated wells with no regards to the tool joint effects has been a major source of error in many drilling mechanics analysis. This has often led to misleading information on buckling and bending of the pipe which could lead to drilling and completion problems and costly well interventions. Thus it becomes necessary to model tool joint effect in the drillstring as it is subjected to downhole forces and stresses. In this study, emphasis is made on the determination of tool joint effect on pipe buckling for highly deviated extended reach wells (ERWs). WellPlan T&D spreadsheet software was used for the simulation. The simulation was runned for pipe with tool joint and the same pipe with the tool joints removed. Results show that jointed pipes has similar buckling behaviour with continuous straight body pipes with buckling starting from sinusoidal buckling mode and gradually entering the helical buckling mode for both types of pipes. Furthermore, result revealed that tool joint presence increases the critical buckling force by an average of 28.9% for helical as well as (AWA) sinusoidal buckling modes.
Published in | International Journal of Oil, Gas and Coal Engineering (Volume 8, Issue 6) |
DOI | 10.11648/j.ogce.20200806.16 |
Page(s) | 157-166 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2021. Published by Science Publishing Group |
Wellbore, Tubular, Modelling, Trajectories, Helical, Sinusoidal
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APA Style
Anthony Kerunwa. (2021). Drillstring Buckling Prediction and Its Impact on Tool-Joint Effects in Extended Reach Wells. International Journal of Oil, Gas and Coal Engineering, 8(6), 157-166. https://doi.org/10.11648/j.ogce.20200806.16
ACS Style
Anthony Kerunwa. Drillstring Buckling Prediction and Its Impact on Tool-Joint Effects in Extended Reach Wells. Int. J. Oil Gas Coal Eng. 2021, 8(6), 157-166. doi: 10.11648/j.ogce.20200806.16
AMA Style
Anthony Kerunwa. Drillstring Buckling Prediction and Its Impact on Tool-Joint Effects in Extended Reach Wells. Int J Oil Gas Coal Eng. 2021;8(6):157-166. doi: 10.11648/j.ogce.20200806.16
@article{10.11648/j.ogce.20200806.16, author = {Anthony Kerunwa}, title = {Drillstring Buckling Prediction and Its Impact on Tool-Joint Effects in Extended Reach Wells}, journal = {International Journal of Oil, Gas and Coal Engineering}, volume = {8}, number = {6}, pages = {157-166}, doi = {10.11648/j.ogce.20200806.16}, url = {https://doi.org/10.11648/j.ogce.20200806.16}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20200806.16}, abstract = {The mechanism of buckling has been extensively studied in pipes and tubings. But these studies more often has been restricted to continuous or straight body pipes. In reality most pipes and other drillstring elements have end couplings or connections known as tool joint. Tool joint presence changes the annular geometry, hydraulics and stress distribution of the pipe or tubulars in the wellbore. Modelling drillstring in highly deviated wells with no regards to the tool joint effects has been a major source of error in many drilling mechanics analysis. This has often led to misleading information on buckling and bending of the pipe which could lead to drilling and completion problems and costly well interventions. Thus it becomes necessary to model tool joint effect in the drillstring as it is subjected to downhole forces and stresses. In this study, emphasis is made on the determination of tool joint effect on pipe buckling for highly deviated extended reach wells (ERWs). WellPlan T&D spreadsheet software was used for the simulation. The simulation was runned for pipe with tool joint and the same pipe with the tool joints removed. Results show that jointed pipes has similar buckling behaviour with continuous straight body pipes with buckling starting from sinusoidal buckling mode and gradually entering the helical buckling mode for both types of pipes. Furthermore, result revealed that tool joint presence increases the critical buckling force by an average of 28.9% for helical as well as (AWA) sinusoidal buckling modes.}, year = {2021} }
TY - JOUR T1 - Drillstring Buckling Prediction and Its Impact on Tool-Joint Effects in Extended Reach Wells AU - Anthony Kerunwa Y1 - 2021/01/04 PY - 2021 N1 - https://doi.org/10.11648/j.ogce.20200806.16 DO - 10.11648/j.ogce.20200806.16 T2 - International Journal of Oil, Gas and Coal Engineering JF - International Journal of Oil, Gas and Coal Engineering JO - International Journal of Oil, Gas and Coal Engineering SP - 157 EP - 166 PB - Science Publishing Group SN - 2376-7677 UR - https://doi.org/10.11648/j.ogce.20200806.16 AB - The mechanism of buckling has been extensively studied in pipes and tubings. But these studies more often has been restricted to continuous or straight body pipes. In reality most pipes and other drillstring elements have end couplings or connections known as tool joint. Tool joint presence changes the annular geometry, hydraulics and stress distribution of the pipe or tubulars in the wellbore. Modelling drillstring in highly deviated wells with no regards to the tool joint effects has been a major source of error in many drilling mechanics analysis. This has often led to misleading information on buckling and bending of the pipe which could lead to drilling and completion problems and costly well interventions. Thus it becomes necessary to model tool joint effect in the drillstring as it is subjected to downhole forces and stresses. In this study, emphasis is made on the determination of tool joint effect on pipe buckling for highly deviated extended reach wells (ERWs). WellPlan T&D spreadsheet software was used for the simulation. The simulation was runned for pipe with tool joint and the same pipe with the tool joints removed. Results show that jointed pipes has similar buckling behaviour with continuous straight body pipes with buckling starting from sinusoidal buckling mode and gradually entering the helical buckling mode for both types of pipes. Furthermore, result revealed that tool joint presence increases the critical buckling force by an average of 28.9% for helical as well as (AWA) sinusoidal buckling modes. VL - 8 IS - 6 ER -