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As part of the proposed development of Battersea Power Station, the iconic London, England landmark, it was necessary to carry out a subsurface multi-beamsurvey to identify the location and structure of inlet and outlet tunnels for the historic building.

Robertson Geo offers wireline conveyed, slim-hole loggingservices for geotechnical investigation, hydrological projects,environmental studies, mineral evaluation, hydrocarbonexploration and geoscience research worldwide.

No project too small, no project too large or challenging.

Publication No: 006 RGO/18

2 www.robertson-geo.com

Robertson Geo is truly a global operation, the market leader of slim-hole logging instrumentation with comprehensive in-housedesign and manufacturing facilities and a proven logging serviceoffer to its customers.

Robertson Geo (USA) Inc provides direct support for NorthAmerican and South American customers and Robertson Geo (Asia)Inc supports operations and customers in the Asia Pacific region.

Services

3www.robertson-geo.com

Professional and committed serviceRobertson Geo and senior personnel areaffiliated with major professional organisationsincluding AGS, BDA, BGA, IoM3, EAGE and theGeological Society. With a commitment tocontinuous Research & Developmentprogrammes, often in partnership with leadingUK and overseas universities, recent pioneeringdevelopments include a slim-line oilfield quadcombo logging suite, plus Optical and AcousticTeleviewers establishing new industry standardsfor high resolution fracture studies.

Service logging operationsRobertson Geo engineers are experienced, highlytrained and fully certified for offshore workingand can be deployed to any global location.

The complete catalogue of equipment is availableon a service basis operated by these field crews.They are capable of prolonged service loggingoperations with minimum outside support andare expert in data processing and interpretation.

These are very cost effective contracting servicesin circumstances where projects do not justifypurchasing equipment and the necessary backup facilities.

Equipment supplyAll Robertson Geo probes are fully tested andcalibrated at the Deganwy facility prior todispatch, eliminating testing time on site andensuring the probes are fully operational prior todownhole use.

Depending on customer needs operational andcustomised training can be provided; this forwinch use, probe deployment, loggingtechniques, data capture and equipmentmaintenance and troubleshooting.

Equipment rentalRobertson Geo equipment is available to rentwith a minimum rental period of 3 days in theUSA or 15 days elsewhere. Full systems(including winches) or individual probes can berented as required with borehole and classroombased training available for rental customers.

In-house processing service can be supplied forrented equipment and all offshore systems comecomplete with spare probes and surface unitstogether with essential spares to eliminateproblems and expensive vessel downtime.

Market sectors serviced include civil engineering infrastructure,nuclear, water, unconventional gas, mining, coal and renewableenergy both onshore and offshore.

Services Overview

• Safety focused operations performedby skilled, experienced and competentlogging personnel

• Logging probes which are tested andcalibrated to known industrystandards in the Deganwy calibrationand test well facility

• ISO certified management systems(QMS) for tool design, manufacture,calibration and execution of loggingservices

• Assistance with preparation of jobmethodology, procedures and riskassessments

• Experienced operations supervision & support backed by established ISO & QHSE management systems

• Technologies that are ‘battle proven’through own use of Robertson Geologging technologies in serviceoperations

• Expert technical support from in-house Research and Development,Engineering & software groups

• Field proven, high-quality, in-house designed and manufacturedlogging probes

• Professional, standardised dataprocessing and reporting

• Expertise and experience gained from over 40 years of logging services globally

• Modern fleet of fully equipped logging vehicles for all environments


Impressive safety record of over 40 yearsSafety and Quality Assurance are of primeimportance in achieving a valid approach to fieldinvestigations and delivery of clientrequirements. Robertson Geo has demonstratedan impressive safety record of over forty years oflogging services, based on the principlesoutlined in the International Association ofGeophysical Contractors Land GeophysicalSafety Manual.

These satisfy the requirements for its entire fieldservices department, design, manufacturing andsales activities.

An ongoing commitment to certifiedquality managementAs the world’s largest provider of slim-holelogging instrumentation, Robertson Geo designsand manufactures almost all equipment in-house.

Purchasers of equipment include waterauthorities, mining houses, civil engineeringconsultants, aid organisations, drilling contractorsand oil companies worldwide with loggingequipment currently used in over 150 countries.

This expertise, support and experience makes forthe offer of first-class services at competitive rates.

Robertson Geo has an ongoing commitment tocertified quality management and our QMS iscertified according to ISO 9001 by TÜV.

Robertson Geo is the only logging servicesprovider with a QMS certified to ISO 9001, andthe only company which comprehensivelycalibrates all of its logging systems. Establishedindustry references at ELGI Hungary and theDWLBC calibration pits (API) in Adelaide,Australia provide the reference models fornuclear tool calibrations. These two referenceswere used by Robertson Geo to establishcalibration benchmarks at the Deganwy facility,and to reference the formation response in theDeganwy calibration and test well facility.

Once a nuclear tool system (Probe + tool specificsource) is calibrated to these recognised Industrystandards, they are then run in the Deganwycalibration and test well facility to verify that thetool response is within tight tolerancesestablished from data gathered over many yearsand 1000’s of runs. All other non-nuclear toolsystems receive the same attention to detail andtest well verification prior to deployment.

Only after verification in the test well confirmingboth tool operational function and measurementcalibration are tools accepted for use.Verification reports and calibration records areprovided in the end of well reporting package.

Robertson Geo is the only logging services provider with a QMS certified to ISO 9001, comprehensively calibrating all of itslogging systems and uniquely using an on-site borehole for testing at its Deganwy test well and calibration facility.

Services


Geophysical logging probe overviewHigh Resolution Acoustic Televiewer (HRAT):Provides a continuous high-resolution orientedultrasound image of the borehole wall. The probeuses a fixed acoustic transducer and a rotatingacoustic mirror to scan the borehole walls with afocussed ultrasound beam. The amplitude andtravel time of the reflected acoustic signal arerecorded as separate image logs.

High Resolution Optical Televiewer (Hi-OPTV):Provides a continuous very high resolutionoriented image of the borehole walls using aconventional light source. A unique opticalsystem based on a fisheye lens allows the probeto survey 360 degrees simultaneously. Thisinformation is processed in real time to producea complete ‘unwrapped’ image of the boreholeoriented to magnetic north. The probe offerssuperior resolution to the High ResolutionAcoustic Televiewer (HRAT) and producesimages in real colour.

Formation Density, Density Guardlog & Iron Ore Density: The Formation Density usesdual shielded detectors to provide a boreholecompensated density measurement with goodbed-boundary resolution. The Density GuardlogProbe offers an additional LL3 focussed electricalmeasurement with good vertical resolution anddepth of investigation.

Density Gamma: Offers a convenient alternativeto the standard Robertson Geo FormationDensity Probe whenever borehole diameter isrestricted and qualitative density measurementsare acceptable. One common application is inlogging through drill pipe when unstableborehole conditions prevent use of unprotectednuclear probes. The probe is unfocussed andindicates the average density of materialsurrounding the borehole.

Small Source Density: Stringent legislation onthe transport and handling of radioactivematerials increasingly prevents the use ofconventional density logging probes. The smallsource density probe provides calibrated andborehole-compensated density logs at sensiblelogging speeds using a very low activity 60Cogamma source that may not require a radiationlicence in certain territories.

Natural Gamma: The natural gamma probesmeasure the activities of naturally occurring orman-made isotopes. The probes are based onscintillation gamma detectors that measure thenatural gamma radiation released frompotassium and the decay products of uraniumand thorium in the borehole.

Neutron: Provides a calibrated boreholecompensated neutron porosity measurement inmud-filled open holes. It is the probe of choicefor quantitative formation fluid studies. A single-detector neutron probe is also available forqualitative porosity logging under most boreholeconditions, including through steel or plasticcasing and drill-pipe.

Spectral Gamma: Analyses the energy spectrumof gamma radiation from naturally occurring orman-made isotopes in the formationsurrounding a borehole. The probe corrects fortemperature drift in real-time by matching theacquired spectrum to base spectra of the mainnatural emitters, potassium, uranium andthorium determined during the tool mastercalibration. Available outputs are full spectrum(static mode only) and continuous logmeasurements of elemental concentrations.Borehole corrections are available for casingthickness, borehole diameter, formation densityand mud/fluid radioactivity for both centralizedand sidewalled tool positions.

Example of data createdby the HRAT Probe.

Example of data createdby the Formation Density Probe.


Electric Log: The classic water-well combinationprobe combining shallow, medium and deeppenetrating resistivity measurements with Self-Potential (SP).

Focussed Electric (Guardlog): The focussedresistivity (LL3) measurement provides excellentvertical resolution and a reasonable depth ofinvestigation. The guard log replaces the classicElectric Log Probe in conditions of low mudresistivity and high formation resistivity.

Microresistivity: Provides a focussed padresistivity measurement with high verticalresolution combined with a caliper and naturalgamma.

Dual Focussed Induction: Provides twosimultaneous conductivity logs, corresponding to“medium” and “deep” radii of investigation intothe formation. The two depths of penetration areuseful in porous, permeable formations wherethe displacement of formation fluids by drillingmud creates an “invasion zone” with differentelectrical properties. The 1” focussed inductionprobe produces a single medium penetrationconductivity log. It finds particular application insmall diameter dry or plastic lined boreholesused for mineral exploration.

Magnetic Susceptibility: Based on the industrystandard Bartington Instruments™ product. It is alow frequency device and is specifically designedfor mining applications. The probe has excellentstability against pressure and temperaturevariations.

Temperature Conductivity: Provides acontinuous, depth-based measurement of fluidtemperature and conductivity. Both parameterscan be output in absolute and in differentialforms. A natural gamma detector is included forcorrelation purposes.

Impeller Flowmeter: Provides a continuous log ofvertical fluid velocity within a borehole. Two sizesof high sensitivity probes satisfy most boreholesize requirements and expected flow rates.

Heat-Pulse Flowmeter: Used to detect lowvertical flows within a borehole, below thethreshold limits of conventional impeller tools.The probe is designed for stationarymeasurements only. Normal logging practiceinvolves measurements at a series of depthsacross the zone of interest.

Induced Polarisation: Measures the chargeseparation or ‘chargeability’ in porous, water-saturated, mineralised rocks caused by thepassage of a low-frequency alternating current.The main cause of induced polarisation is acurrent- induced electron-transfer reactionbetween ions of an electrolyte in contact withgrains of semi-conducting metallic minerals.

Water Quality: Based on the industry standardOcean Seven 302™ probe manufactured byIdronaut Srl. The tool is available in ‘saline’ and‘fresh-water’ versions with different conductivityranges and available measurements. The probeenables a rapid, continuous profile to be taken ofall the selected parameters throughout theborehole either for direct use or as a guide forsubsequent sampling.

Water/Gas Sampler: Probes are used to recoverdiscrete samples of well fluid at a particular depthand to return it uncontaminated to the surface.

3-Arm Caliper: Provides a single continuous logof borehole diameter as recorded by threemechanically coupled arms in contact with theborehole wall. A number of sizes are available tosuit a range of well diameters. The caliper is auseful first log to determine the boreholeconditions before running more costly probes, orthose containing radioactive sources.

Services

Example of data createdby the Hi-OPTV Probe.

Example of data createdby the Focussed Electric(Guardlog) Probe.


Borehole Geometry: Consists of a 4-arm calipercombined with a verticality measurement. Theprobe can replace the standard 3-arm caliperwith advantage where the borehole cross-section departs from circular, and wheredirectional information is required for wellcompletion studies and formation stress analysis.

Verticality: Provides accurate, continuousmeasurements of borehole inclination anddirection. These are output directly as log tracesor may be processed further to produce tabularand graphical outputs of borehole position,borehole drift and true vertical depth.

Gyro: Acquires borehole inclination/azimuth logsin situations where metal casing or magneticmaterials around the borehole prevent use of thestandard verticality probe. The 3D-magnetometerversion also acquires 3D-magnetic data forlocation of magnetic ore bodies.

4-Arm Dipmeter: Measures microresistivity andtool orientation data. These can be processed usingRG-Dip™ software to determine formation dips.

Full Waveform Sonic: Uses a dual-transmitterdual-receiver array to provide high qualityformation acoustic velocity data. Options areavailable for display of full waveform data andcement bond data (CBL) in cased boreholes.

PS Logger: Provides high resolution shear waveand compressional data in rock and soils atdepths up to 500m, from measurements within asingle borehole.

Surface Equipment OverviewMicrologger2: surface interface system forhandling logging data acquisition, whichsupports all Robertson Geo probes, includingacoustic and imaging tools.

Winlogger: MS Windows based operatingsystem for the Micrologger2, provides fieldacquisition capability. In-house processing,interpretation and reporting is undertaken.

Winches: Robertson Geo designs and builds its own range of winches of varying capacitiesfor deploying subsurface probes on 4-core or co-axial cable.

• Mini Winch • 1000m/2000m Winch

• 500m Winch • 2000m Marine Winch

• 600m Winch • 3000m Winch

Example of data createdby the Full WaveformTriple Sonic Probe.

Example of data createdby the BoreholeGeometry Probe.


Extensive UK and International Experience

LOCATION DESCRIPTION CLIENT TOOLS DEPLOYED SECTOR

Canary Wharf, Concrete pile inspection Arup Hi-OPTV Civil EngineeringLondon for skyscraper construction

San Antonio, Chile Harbour project GeoQuip PS Logger Civil EngineeringMarine

Bunsfield, UK Checking water quality after Arcadis Temperature Conductivity Environmentalexplosion at oil refinery

Plymouth, UK Decommissioning oil refinery Arcadis Density logging Environmental

Dounreay, Scotland Waste storage investigation Fugro Televiewers Nuclearat nuclear power station

M11 Motorway, Geotech investigation for Priority Hi-OPTV & HRAT InfrastructureIreland road construction

AWPR, Aberdeen, Geotech investigation for Priority Hi-OPTV & HRAT InfrastructureScotland orbital road construction

A303, Wiltshire, Geotech investigation for Structural Hi-OPTV & HRAT InfrastructureEngland Stonehenge underpass Soils

A9, Perth, Scotland Geotech investigation for ESG Hi-OPTV & HRAT Infrastructuretrunk road dualling

Queensferry Crossing, Geotech investigation for Glovers/Arup Full suite InfrastructureScotland major road bridge inc. nuclear tools

construction

Lake Maracaibo, Geotech investigation for Geohidra PS Logger Civil EngineeringVenezuela bridge construction

Le Havre, France Seabed investigation for Horizon PS Logger Renewablesoffshore wind turbines

Dudgeon Wind Farm, Seabed investigation for Geo PS Logger, HRAT RenewablesNorfolk, UK offshore wind turbines

Vesterhav Wind Farm, Seabed investigation for Geo PS Logger RenewablesDenmark offshore wind turbines

St. Malo, France Seabed investigation for Fugro P S Logger, HRAT, Caliper Renewablesoffshore wind turbines

Hornsea Wind Farm, Seabed investigation for DONG PS Logger RenewablesUK offshore wind turbines

HS2 Rail, UK Geotech investigation for BAM Ritchies Televiewers, Infrastructuremajor N-S rail link Caliper, Density


Robertson Geo has extensive UK and international experience of providing borehole logging servicesin a wide range of sectors and applications, including major infrastructure projects. Examples include:


CrossRail, London Geotech investigation for Concept Density Infrastructuremajor cross London rail ink

Hinkley Point C, Concrete investigation at Kier BAM Televiewers, Caliper, NuclearSomerset, UK new nuclear build site Gamma

Wylfa, Anglesey, Offshore investigation at Fugro Televiewers, Sonic NuclearWales nuclear power station

Nottingham, UK Geoenergy British HRAT, Triple Sonic, ResearchObservatory project Geological Electric Log, 3-Arm Caliper,

Survey Density, Dual Neutron

Abergele, Wales Investigation of casing Decantae Televiewers, CCTV, Caliper, Waterintegrity in mineral Temperature Conductivity,water asset Electric Log

Omagh, Gold mine exploration Dalradian Televiewers, Caliper, MiningNorthern Ireland Full Waveform Sonic,

Dual Neutron, Electric Log,Formation Density,Magnetic Susceptibility

Navan, Ireland Zinc/Lead mine exploration Boliden HRAT, Electric Log, MiningSpectral Gamma

Mullingar, Ireland Zinc/Lead mine exploration Teck Formation Density, MiningFull Waveform Sonic, Temperature Conductivity, Spectral Gamma, Gamma

Gabon, W. Africa Uranium mine exploration Soil Spectral Gamma MiningEngineering

S.Wales, Nottingham, Coal mine monitoring UK Coal CCTV, MiningStoke, NE England, & investigation Temperature Conductivity,Scottish Borders Fluid Sampler

Yorkshire, UK Coal bed methane Alkane Energy CCTV Oil/Gasexploration

Bridgend, Wales Shallow gas Coastal Spectral Gamma, Caliper, investigation/exploration Porosity, Dual Neutron, Oil/Gas

Televiewers, Electric Log

New Bedford, USA Seabed investigation for Horizon PS Logger Renewablesoffshore wind turbines

Derbyshire, Coal mine monitoring Coal Authority CCTV, Temperature MiningYorkshire, UK & investigation Conductivity, Fluid Sampler


Extensive UK and International Experience


Bradwell, UK Onshore investigation for Structural Televiewers, Borehole Nuclearnew nuclear build site Soils Geometry, Dual Neutron,

Formation Density, Focussed Electric Log, PS Logger, Full Waveform Sonic, Magnetic Susceptibility

Rhondda Valley, Water well inspection Severn Trent CCTV, Temperature WaterWales Services Conductivity, 3-Arm Caliper,

Fluid Sampler

Manchester, UK Geotech investigation for GeoAssist Televiewers, PS Logger, Civil Engineeringtower block construction Formation Density,

3-Arm Caliper, Temperature Conductivity

Peterhead, Scotland Onshore investigation for Structural Hi-OPTV & HRAT Renewablesrenewables infrastructure Soils

Moray OWF, Scotland Seabed investigation for Horizon PS Logger Renewablesoffshore wind turbines

Porthmadog, Wales Geotech investigation for WSP Hi-OPTV & HRAT Infrastructurebridge construction

Lower Thames Onshore geotech investigation AECOM Televiewers, 3-Arm Caliper, InfrastructureCrossing, UK for tunnel construction Dual Neutron,

Formation Density, Focussed Electric Log, Temperature Conductivity, Dual Induction

Nant Llesg, Coal Mine Exploration APEX/ Density MiningMerthyr Tydfil Miller Argent

Aberpergwn, Coal Mine Exploration Western Coal Televiewers, Caliper, MiningMerthyr Tydfil Gamma, Formation Density,

Full Waveform Sonic

Bardon Hill Quarry Aggregate Quarry extension Walters Televiewers Mining

Leaton Quarry, Telford Quarry Extension Breedon Televiewers MiningSouthern

Grange Hill Quarry Limestone Exploration Cotswold Televiewers, Caliper, MiningNatural Stone Gamma


Operational Training by expert field personnelRobertson Geo offers operational training forwinch use, probe deployment, loggingtechniques, data capture, and equipmentmaintenance and troubleshooting.

These Training schedules are flexible (from oneto five days) and customised, depending on theexperience levels and focus of attendees.

Training certificates and electronic copies ofmanuals and test data are provided and whilst itis preferable that training is undertaken at theDeganwy calibration and test well facility,training can also be conducted at the customers’site, including international locations.

Here’s an example of a one day training schedulefor: Winch; Televiewer; Temperature/Conductivity Probe; Water Sampler; Winlogger.

HSE and Site Induction

Logging Overview

• Winch Overview/Safety• Depth System• Logging System Setup• Borehole Safety• Power Safety

Optical Televiewer

• Software Overview• Centralisation• Basic Usage

Data Export

Temperature/Conductivity

• Winlogger Overview• NGAM calibration• Depth Setup (Up/Down logs)• Basic Usage

Water Sampler

• Basic Usage

Winlogger

• Depth Matching • Data Merging• Data Export• PDF conversion

Summation and additional software overview

A dedicated support team can provide aftertraining assistance for technical queries and canbe contacted direct on [email protected]

Robertson Geo is focused on delivering high quality services andequipment with geophysical logging tools developed in-house overseveral decades. There is a proven record of safely deliveringsubsurface logging investigations in demanding environments,offering experienced personnel and mature technologies, supportedby in-house engineering, manufacturing and R&D resources.

Services

Robertson Geo has afleet of logging vehiclesranging from LandRovers, Land Cruisersand LWB Vanssupporting Service Crewsin the toughest of fieldapplications.

Customised quotations can be obtained through Graham Comber,Logging Services Manager, at [email protected]


Robertson Geologging Ltd.Deganwy, Conwy, LL31 9PX,

United Kingdom

T: +44 (0) 1492 582 323E: [email protected]

Robertson Geologging (USA) Inc.1809 N. Helm Ave., Suite 4,

Fresno, CA 93727, USA

T: +1 (559) 456 1711E: [email protected]

Robertson Geologging (Asia) Inc.Flat 21A, Village Tower, 7 Village Road,

Happy Valley, Hong Kong

T: +852 650 33486E: [email protected]

www.robertson-geo.com

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