Drill String Dynamic Improving the Drilling Performance by Optimizing the Speed Limit and Study the Resonance of the Experimental Drill String System

摘要

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.