The Open Petroleum Engineering Journal


ISSN: 1874-8341 ― Volume 12, 2019

Using the Fictitious Force to Judge the Stability of Pipe String is Wrong

The Open Petroleum Engineering Journal, 2013, 6: 57-60

Zifeng Li

Petroleum Engineering Institute, Yanshan University, Qinhuangdao 066004, China.

Electronic publication date 18/10/2013
[DOI: 10.2174/1874834101306010057]


Pipes are under the trial of internal and external pressure of fluid in oil well drilling and production. Changes of internal and external pressure of fluid may affect equivalent axis force using for stability analysis of pipes in some cases. Errors in traditional mechanical model and fictitious force are discussed. Mechanical model representing true tubular conditions is established. Internal and external pressure of fluid and its changes have no effects on the stability of hanging pipes. Changes in internal and external pressure of fluid show effects on equivalent axis force and stability of pipes fixed at two ends. Equations for calculating equivalent axis force are established depending on constant axis strain. For pipes fixed at two ends, equivalent axis force decreases when internal pressure increases, equivalent axis force increases when external pressure increases; increase of internal pressure and decrease of external pressure may make equivalent axis force negative, even less than critical buckling force.

Download PDF

Track Your Manuscript:


"I have to express my sincere appreciation for your hard and professional work. Thank you very much!"

Si Zhang
Institute for Strength and Vibration of Mechanical Structures,
Yangtze University, Jingzhou,
Hubei Province,

"My experiences in publishing a paper with Bentham Open is good. I must say that the speed of publication in The Open Petroleum Engineering Journal is very fast. It takes only two month for the pioneer reviewing process. The delay was caused by me. And what’s more, the publisher’s office is quite helpful. I guess they are dealing with thousands emails every week, but they process my request in a very short period of time."

Xin Ma
School of Science, Southwest Petroleum University, Chengdu, China

Browse Contents

Webmaster Contact:
Copyright © 2023 Bentham Open