"We are absolutely driven by market demand for faster, more cost-effective solutions to log accurate data, so we set out to deliver that by innovating traditional logging technologies," said Federico Casavantes, CEO of Probe. "For example, our new ProMAC Series of multi-arm calliper tools are fully combinable with all Probe HD Platform tools and operate in Surface Readout or Memory modes. There are multiple improvements that increase reliability, maintainability and accuracy. One such improvement, for example, is that the tool's sensors' outstanding linearity and stability has allowed us to reduce calibration time to half a day. Consequently, our customers are able to increase asset utilisation by minimising downtime. It also means that electronics and sensors aren't exposed to high temperatures more than absolutely necessary, reducing the risk of tool failure due to temperature fatigue."

The new MAC24 incorporates innovations in metrology and manufacturing, greatly improving log data quality, accuracy and reliability when logging tubing and casing mineral deposition, corrosion, wear and mechanical deformation. Relying upon a modular constant current sensor design that Probe developed specifically for the ProMAC Series, the tool provides high-stability and accuracy over its full operating temperature range up to 175C.

The MAC24 calibration process has also been dramatically reduced from days to a few hours.

Designed with the utmost attention to measurement quality, the tool has been proven through extensive engineering and field-testing. At recommended logging speeds of 30ft per minute (9m per minute), MAC24 meets industry standards with a vertical resolution of 0.12in (3mm). Considering future super high-resolution requirements, the tool will also be capable of sampling at up to 100 frames per second achieving a vertical resolution of 0.06in (1.5mm) at current industry-accepted logging speeds.

In September, Probe introduced the UHT Dimension XY Caliper, the first XY calliper tool designed to operate in ultra-high temperature environments.

The tool, which builds upon the Kuster geothermal logging tool portfolio, performs in hostile environments up to 325C (617F) and provides two continuous independent perpendicular measurements (X and Y) of the internal diameter of the casing.

The UHT Dimension XY Caliper also generates a high-resolution temperature profile of the well via an external fast-response resistance temperature detector. It is the first calliper tool available to log in ultra-high temperature environments, such as those typically encountered in geothermal well operations.

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