TecWel - Specialised Cased Hole Logging Services

TecWel is a supplier of premium cased hole logging services that currently specialises in the areas of well integrity and sand detection. The tools used in TecWel's cased hole logging services services are the products of our own R&D efforts. The tools are thus exclusively operated by TecWel. In the near future new tools and services will be brought to the market.

A service from TecWel consists of more than just the tool supply. Prior to any operation, TecWel provides a thorough evaluation of the application in order to assure every technical challenge is accounted for. The unique combination of premium tool technology and technical understanding of the behaviour of the well generates huge savings and increased productivity for the clients.

ULTRASOUND LOGGING TOOLS

TecWel is the only company dedicated to using only ultrasound (high frequency acoustic energy) as the physical principle in all its logging tools. The use of ultrasound logging tools for oilfield use is in its infancy, but it has already proven to have great advantages. The potential is far from fully exploited and TecWel will strive to develop the technology further into new tools and services which will gradually replace those commonly used in the industry today.

WELL LEAK DETECTOR AND WELL SAND DETECTOR

The above described situation has been achieved in the WLD (Well Leak Detector) and WSD (Well Sand Detector) services from TecWel. By careful laboratory and full scale testing of energies generated by flow of fluids through a leak point (WLD) or sand colliding with steel (WSD), TecWel has developed tools specialised in registering and analysing these energies. The WLD and WSD tools utilise:

• Highly sophisticated electronic components
• Numerous different intelligent sensors
• "Digital Signal Processing" (DSP), eliminating all analogue filters and signal processing
• Specially designed software
• Adjustable sensitivities
• Simultaneous analysis of different high frequency ranges

These features enable TecWel to register, analyse and pinpoint the exact location of the problem.

OBJECTIVE

It is the long term objective of TecWel to outstrip all the tools and technologies presently used in production optimisation and well diagnosis. TecWel will do this by developing tools based on the physical principle of ultrasound. As a part of this objective TecWel will close different technology gaps step by step and provide data that is easy to interpret, repeatable and gives the highest degree of correct information to the client.

R&D

The TecWel R&D department is constantly developing new tools and improving existing technology. This is very important to a rather small company with "cutting edge" technology. Only through constant improvement and development of new tools can TecWel stay competitive by providing quality services the clients cannot get from any other supplier.

ULTRASOUND TECHNOLOGY

High frequency energy has unique characteristics that are fully exploited by the technology utilised in our tools. Audible frequency energy travels much further than inaudible (ultrasonic) energy. Therefore it is hard to locate the exact origin of an audible leak source. In contrast, high frequency energy can only be picked up 1m to 3m away from the source, depending on the acoustic impedance of the matter it has to pass through from its origin to the sensor.

By understanding this, it is easier to comprehend why the source can be pin pointed with an accuracy of inches. Further, high frequency energy can pass through steel and liquids including compressed gas. Using this feature of ultrasonic energy, the tools from TecWel can register and locate leaks behind pipes (for example in the B casing), while being run inside the tubing at conventional logging speeds.