Torque-turns Measurement during Makeup is Insufficient to Indicate Seal Integrity
Operators require gas tight connections for a variety of applications including thermal, HPHT and tight oil wells. Premium connections that incorporate a metal-to-metal seal near the nose of the casing pin end can provide this level of seal performance.
Premium connections do not follow a specific design code. Their performance can vary considerably among manufacturers and even among different casing sizes.
Conventional torque-turns measurements during connection assembly are not adequate to confirm proper metal-to-metal seal engagement.
Ultrasonic Inspection of Seal Surface Indicates Seal Quality
C-FER has developed a specialized tool called Ultrasonic Reflection Amplitude Pressure (URAP). This tool ultrasonically examines the contact stress at the radial metal-to-metal seal of premium connections after they are made up.
URAP Service Package
URAP has been used extensively as an integral component of connection qualification test programs at C-FER.
The URAP service can become an integral component of a manufacturer’s standard QA/QC process. It is also a valuable research tool for developing new connections.
C-FER’s URAP specialists can perform scans of production run or specialty connections in the manufacturing facility. Operators may wish to include URAP as part of specialized product or vendor qualification programs.