TY  - JOUR
T1  - Drill String Dynamic Improving the Drilling Performance by Optimizing the
Speed Limit and Study the Resonance of the Experimental Drill String System
AU - Kar, Suriani bt Che AU - Esat, Ibrahim AU - Alkhamees, Ali A.A.A. AU - Woo, Muhammad Effendy B. Mohd Farid AU - Schkzamian, Guillermo 
JO  - Journal of Engineering and Applied Sciences
VL  - 12
IS  - 15
SP  - 3989
EP  - 3994
PY  - 2017
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2017.3989.3994
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2017.3989.3994
KW  - Drill string dynamic
KW  -two contact point
KW  -lateral
KW  -axial and torsional vibration component
KW  -examined
KW  -without
AB  - Drill string failures have increased tremendously over the past 10 years and have become a serious
problem resulting in significant financial losses. Existence of vibrations in drill string is known as a complex and
unpredictable. Hence, solving and minimizing the vibration are substantial and cost effective to the oil and gas
organisation. Previous research conducted has led to breakthrough in exploration of oil and gas either sea or
land. Narrowing to most common problem in rotary drilling system, vibration in aspect of axial, lateral and
torsional is widely studied. In this study, an experimental drill string set up is examined in different speed with
brake and without brake. Labview NI environments is used for execution and data acquisition. Data acquisition
recorded by using sensors; encoder and accelerometer. Motor driving voltage responds linearly to the
rotational speed and single sided magnitude spectrum measured for different speed with and without brake.
ER  -