Research Article | OPEN ACCESS
The Influence of Collar on Surge Pressure Caused by the Drill String Inertia Force Under Closed Pipe Condition
Jun Li, Shengyu Bi, Jun Zou and Gonghui Liu
College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Research Journal of Applied Sciences, Engineering and Technology 2013 16:4155-4157
Received: July 31, 2012 | Accepted: September 08, 2012 | Published: April 30, 2013
Abstract
The study of surge pressure is of significant importance for the safety of drilling process. However, the existing surge pressure models rarely take the impact of the collar into consideration and thus will inevitably affect the precision of the surge pressure calculation. In this paper, based on closed pipe condition, a steady-state calculation model for surge pressure caused by drill string inertia force is developed considering the presence of collar. In the end a case study is presented to demonstrate the importance of collar during the calculation of surge pressure.
Keywords:
Casing, closed pipe, collar, inertia force, surge pressure,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is 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, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
|
|
![](http://www.maxwellsci.com/images/RJASET-maxw.jpg) |
ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
![Submit Manuscript](../images/sub.jpg) |
Information |
|
|
|
Sales & Services |
|
|
|