EnerMech is the industry leading subsea umbilical testing and commissioning company, providing complete support across the broad range of hydraulic, electrical and fibre optic testing, wireless monitoring and umbilical cleanliness management and flushing.
We have significant experience in delivering diverse workscopes in often continually changing circumstances. Through providing an integrated approach we can harness the collective services of all EnerMech's business lines, allowing an unrivalled service range.
EnerMech will ensure that fluids used within umbilicals are cleaned to the required specification. Typically, we will clean fluids to the below standards:
Cleaning can take place prior to mobilisation or on vessel or platform. Once cleaning is complete Fluid Cleanliness certificates are presented to our customers and samples of fluids are kept for a dedicated time thereafter. By continuously flushing the fluids through filters we achieve a high level of cleanliness to ensure standards are maintained throughout the duration of operations.
EnerMech's hydraulic and electrical testing division is highly skilled in carrying out testing of umbilicals during the pre-commissioning duration, including pre-and-post load out tests, pre abandonment test, post pull in and post hook up tests.
It is critical that systems and valves controlled by hydraulic umbilicals use fluid cleaned to the required specification. Umbilicals with different fluid cores and pressure ratings are separated into groups and pressurised through a common manifold to ensure testing is carried out. Calibrated instrumentation and PRVs are routinely used by EnerMech to ensure the correct pressures are adhered to.
Subsea operations require trustworthy electrical power cables to provide crucial control and data transmission. EnerMech provides electrical testing for these cables, on all the above stages of pre-commissioning activities, for continuity resistance (CR), insulation resistance (IR) and time domain reflectometry (TDR).
CR testing carried out by EnerMech can be carried out on looped quads or umbilicals where we have access to both ends. CR testing will ensure there is continuity throughout the length of the conductors.
IR Testing can be carried out on individual or looped quads. Quads of the same size can also be tied together to test as a bundle, saving time for our customers. IR testing on a quad can be carried out against other quads or against the cable screen. Voltage used for IR testing can be discussed and agreed between EnerMech and client on a project specific basis.
TDR Testing carried out by EnerMech can be used to find faults within a conductor on single or looped conductors. The test uses a high frequency pulse which is transmitted along the conductor with a reflection signature or trace received back to the TDR test set. Faults will be highlighted on the final trace and can be compared to FAT results.
Our team of skilled engineers carry out Fibre Optic Testing of both single mode and multi-mode variants of fibres. With demand for fibre optics increasing for several applications across the global energy market, our testing capabilities allow for continued connectivity, ensuring the best possible safety and productivity in the harshest of environments.
Optical Time Domain Reflectometers (OTDR) testing is performed to prove the fibre optic tubes can transmit required levels of light without significant loss in accordance with specifications laid down in BS-EN-50173. An OTDR injects a series of optical pulses into the fibre that is being tested. The OTDR measures the time and intensity of the light reflected and displays a final trace of the attenuation over distance.
EnerMech’s pressure and CR wireless monitoring provides efficient and accurate monitoring over manual or wired approaches. Using our wireless technology, we support operators to optimise ongoing well production, while acquiring a better understanding of long-term performance.
Our dedicated team carry out pressure monitoring by connecting pressure transducers to umbilical cores or a manifold. A wireless receiver will transfer this data to a laptop which provides a live feed of the pressures within the umbilical. Should the pressure fall below a specified value, EnerMech will stop operations to allow topping up operations to be carried out.
CR Monitoring is carried out by measuring the continuity resistance of a quad (or group of quads). Conductors will be looped at the second end to allow for successful CR monitoring. A wireless receiver will transfer data to a laptop which can give a live feed of the continuity resistance within the conductors. We are then able to advise our clients should there be any spikes in the CR while lay operations are on-going, indicating possible damage to the umbilical. Should this happen further testing can be carried out by EnerMech.
Using EnerMech’s wireless technology, we provide cost effective and efficient monitoring to umbilical cores and manifolds, especially those located in challenging locations.
