Effect of Coiled Tubing (CT) Initial Configuration on Buckling/Bending Behavior in Straight Deviated Wells

1997 ◽  
Author(s):  
Weiyong Qiu ◽  
Stefan Miska ◽  
Len Volk
Keyword(s):  
Initial Configuration ◽  
Coiled Tubing ◽  
Bending Behavior ◽  
Deviated Wells

Effect of Coiled Tubing Initial Configuration on Buckling Behavior in Deviated Wells

1999 ◽  
Vol 121 (3) ◽  
pp. 176-182 ◽  
Author(s):  
W. Y. Qiu ◽  
S. Z. Miska ◽  
L. J. Volk
Keyword(s):  
Virtual Work ◽  
Initial Configuration ◽  
Initial Amplitude ◽  
Principle Of Virtual Work ◽  
Conservation Of Energy ◽  
Numerical Examples ◽  
Coiled Tubing ◽  
Buckling Behavior ◽  
Helical Buckling ◽  
Deviated Wells

Current sinusoidal and helical buckling models are valid only for initially straight coiled tubing (CT). This paper stresses the effect of the pipe initial configuration (residual bending) on the sinusoidal and helical buckling behaviors in deviated wells. Using the conservation of energy and the principle of virtual work, new general equations are derived for predicting the sinusoidal and helical configurations of CT. These new equations reduce to those previously published when the CT is initially straight in deviated wells. Numerical examples are provided to show the effect of the initial amplitude, the inclination angle, and the size of a borehole on the sinusoidal and helical buckling behaviors of CT with the residual bending.

Well Cutting Without Explosives with Multiple Cuts on a Single Run

2021 ◽  
Author(s):  
Hanan Ghannam ◽  
Houssam Mourani ◽  
Brian Joseph Schwanitz
Keyword(s):  
Drill Pipe ◽  
Case Histories ◽  
Critical Part ◽  
Coiled Tubing ◽  
Electric Line ◽  
New Generation ◽  
Deviated Wells

Abstract Pipe cutting operations are often a critical part of stuck pipe situations, well interventions and plug and abandon operations which all need to remove cut sections of pipe from the well. Unlike traditional ‘blade’ style e-line cutters, which can jam under pipe compression or explosive pipe cutters, which need to dress-over the jagged cut by the rig, a new electric line mechanical cutter's unique design enables performance even if the pipe is under compression, in tension or is neutral. It can also perform multiple cuts in the same run, while creating a clean and machined cut with tool-entry friendly shape. This paper will describe the technology of the new generation cutter, present two case histories; one of multiple cuts of stuck drill pipe, per each run in hole, from Germany and one of a critical tubing cut from a subsea well in Nigeria, using electric wireline and tractor conveyed services for many tasks traditionally performed with coiled tubing in highly deviated wells. These "light vs heavy" solutions can often be done off-line from the rig.

Furthering the Capabilities of Coiled Tubing Production Logging in Horizontal and Highly Deviated Wells: The Advent of Reservoir Saturation Logging in Southern Mexico

2015 ◽  
Author(s):  
O. Jimenez Bueno ◽  
A. F. Mejia Nava ◽  
H. Hernandez Leyva ◽  
C. A. Mendoza Ortega ◽  
P. Ramondenc ◽  
...  
Keyword(s):  
Southern Mexico ◽  
Coiled Tubing ◽  
Deviated Wells
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