The Downhole X-Ray Platform

All of Visuray’s tools share a set of common technological elements called the Downhole X-Ray Platform. The platform currently supports these services:


VR90 Downhole X-Ray Diagnostic Service

The world’s first downhole X-ray tool for well diagnostics, with proven success in Northern Europe, the Middle East, and the United States.

VR90s Advanced Diagnostic Service

The second-generation downhole X-ray diagnostic tool for slimmer, hotter wells while boasting a 50% wider field of view. A Visuray Positioning Module ensures precise tool placement, and specs include resistance to sour wells.

VRAz Corrosion Analyzer Service

The latest member of the VR90 family adapted to accurately diagnose the state of corrosion of production tubing in full 3D through scale.

VR360 Diagnostic Cement Evaluation Service

A revolutionary cement evaluation tool, currently in development, that radiates X-rays outward to directly evaluate cement integrity even in double casing strings. A step change for well safety not only for new wells, but also for decommissioning old wells.


Conventional X-ray imaging – for example in security or medical applications – involve placing the object to be scanned between the X-ray source and detector. This physical configuration isn’t possible in an oil well. Therefore Visuray scientists developed an alternative solution called “fluid-based surface imaging” that uses an X-ray source and detectors positioned on the same side of the target object.

The technique relies on X-ray scattering within the fluid separating the target object from the X-ray source. Fluids scatter X-rays strongly, so an increase in scattered and detected X-rays means more fluid present in the field of view and correspondingly more distance to the target object. Visuray uses this effect with high-pixel resolution to reconstruct the target object in 2D and 3D with millimetric accuracy.

Wherever the well and whatever its condition, the Downhole X-Ray Platform’s family of services will see what’s happening and deliver quality images 100% of the time.


Five distinct technological developments and innovations lie at the heart of the Visuray Downhole X-Ray Platform:
  • First is a range of custom-designed photon-counting X-ray detectors, which include dense, pixelated arrays derived from technology developed in the medical industry, combined with customized compact photomultiplier/scintillator detectors that are used in the oil industry.
  • Second is a range of powerful X-ray sources that have been specially miniaturized and designed for high output.
  • Third is a compact, ultra-high voltage power supply enabling the source to emit high-energy X-rays.
  • Fourth, is a family of heat exchangers and downhole coolers used to control the temperature of the sources and detectors.
  • Fifth is patented data analysis and processing techniques that convert the acquired digital data into 2D and 3D images.


For the future, Visuray is harnessing the incredible potential of its Downhole X-Ray Platform to create even more sophisticated imaging and also a source-less alternative to conventional formation evaluation logging.

A constant headache in oil production is the tubing becoming caked in scale, obstructing production, and being corroded by solid particles. The VRAz® imaging service is designed to create a 3D image of tubing with scale removed, showing tubing thickness to 1 mm accuracy. The images will permit the oil company to decide on the necessity of a workover, rather than relying on guesswork.

Visuray is also applying its Downhole X-Ray Platform for the development of a density logging tool with a response identical to classic formation density tools that use a chemical Cesium137 nuclear source. Visuray has demonstrated that a 0.01 g/cc accuracy can be achieved logging at as fast as 7,200 feet per hour, significantly faster than today’s best-in-class technology.    

The Downhole X-Ray Platform is also being used to build a laboratory equivalent of a conventional neutron porosity logging tool. The Downhole X-Ray Platform therefore promises to dispense with all chemical nuclear sources for conventional logging. Visuray will market this X-ray driven logging as the VRFE72® service.  In addition to the development of this family of wireline-conveyed tools, the packaging and integration of our Downhole X-Ray Platform is also being adapted for future use in logging-while-drilling applications.
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