Table of Contents
Advertisement
Chapter 1: Introduction to the Argus TubeSpec
About the Argus TubeSpec
In today's complex wellsite environment, coiled tubing failure can occur as a result of mechanical damage
due to erosion, corrosion, tensile overload, and abrasion. These failures are not only costly, but time-con-
suming for both the service provider and the well operator.
The Argus TubeSpec is a unique, patented, ultrasonic method of measuring coiled tubing. As coiled tubing
(CT) passes through the inspection device during field operations, the TubeSpec system provides highly
accurate, frequent, circumferential and wall-thickness CT measurements.
While most Ultrasonic Transducer (UT) methods require clean water to couple the ultrasonic probe to the
material measured, the Argus TubeSpec uses a polyurethane element as a medium between the sensor and
the CT, therefore eliminating the need for water coupling.
The polyurethane element (a solid) exhibits excellent wear characteristics. When compressed, the element
conforms to changes (fills the voids) in the surface contour of the tubing. The polyurethane element is
therefore not contaminated by the environment, and accurate circumferential and wall-thickness measure-
ments can be made.
In the figure Argus TubeSpec Basic Design, the basic TubeSpec design is revealed as being comprised of
12 UT sensors with yellow polyurethane elements between them, and a hole for the tubing to pass through.
The end plates are tied to hydraulic pistons with bolts, and thus the yellow polyurethane elements (packers)
can be compressed to fill the gaps between the sensors and the tubing, making ultrasonic readings of the
tube possible. Lubrication is required to keep drag on the tubing to a minimum, but a directional controlled
lubrication system is provided for this purpose.
Argus TubeSpec Basic Design
2
NOV CTES
Argus TubeSpec User Guide
Hide quick links:
Advertisement
Table of Contents
