Sonar Cavity Logging Service

RG has teamed up with Flodim, the French sonar specialists, to bring a full range of sonar survey services to the UK. Commercial operations will commence in November 2010 with field units based in Deganwy, North Wales as well as in Manosque in the South of France. We will offer offshore operations from early 2011.

Sonar surveys provide an accurate 3D computed model of a fluid-filled cavity based on thousands of positional measurements acquired by an acoustic scanning probe. The equipment is of proprietary design and features a fully tiltable head to ensure full coverage of the roof and floor at distances up to 200m. It is suited to hostile environments up to 10,000psi and 120degC and can operate through single or double string casings.

Applications include:

- Brine or potash production cavities
- Liquid hydrocarbon storage cavities
- Old mines and quarries
- Gas storage cavities under low or high pressure

RG-Flodim offer a full range of complementary logging measurements including PLT, pulsed-neutron, hole-deviation, acoustic televiewng and CBL

For further information about sonar survey services, please contact either Derek Merton-Lyn or Peter Wild at Robertson Geologging.

Designed for QA of pile boreholes, this tool features 6 independent arms and can log boreholes up to 3m diameter. The RG 6-arm caliper probe operates in water or airfilled boreholes up to 100m in depth. The probe comes with extension arms with a choice of either roller or hardened tips. An optional lower centraliser is mechanically linked to the main caliper and opens simultaneously. The logging software displays cross-sections, a 3-d model of the borehole and calculates the required cement volume.

With a capacity of 3000m of 3/16" wireline, this is the largest electrically powered winch in our range. A powerful 4kVA motor provides a smoothly controllable line speed of up to 100m/min and a maximum pull of 1,350kgf. The winch features a driven level wind (with optional remote manual adjustment), electrical and hydraulic braking and an integral tension measuring device.

Click here for further details

We have recently introduced a new range of stackable slim open-hole tools for oil and gas applications. Currently available modules include density, gamma, neutron, induction, microresistivity and dipmeter. Tools are rated to 125degC and 12500psi. Click here for details.

The recent development of affordable slim-hole imaging probes has ensured these tools a place in many geotechnical investigations.

	Optical televiewer (OPTV) and acoustic televiewer(HRAT) logs provide high-resolution 360 degree oriented images of the borehole walls. Fractures, stratigraphy and 'break-outs' due to down-hole stresses are immediately visible and can be characterised with our comprehensive RG-DIP interpetation package. Two new papers on the site from our in-house expert, Dr Andy Siddans, describe the principles of the tools and RG-DIP software, based on recent case studies. Sample log files and a downloadable viewer are also included.
	OPTV (optical televiewer): more HRAT (acoustic televiewer): more