Services

Geophysical and geotechnical services for marine and land.

THI delivers marine geophysical survey, offshore geotechnical investigation, nearshore and onshore geotechnical work, exploratory drilling, hydrogeology drilling, and seabed investigation.

01 Service Lines

Technical services

Survey, drilling, sampling, testing, and interpretation services configured around each project environment.

2D/3D high resolution marine seismic survey vessel documentation
Marine Seismic Survey Vessel
2D/3D high resolution marine seismic survey vessel documentation
Marine Seismic Survey Vessel
2D HR seismic operation documentation during marine acquisition
2D HR Seismic Operation
Seismic source and deck equipment documentation
Seismic Source Deck
2D seismic survey illustration
2D Seismic Survey Line
3D seismic survey illustration
3D Seismic Survey Grid
Marine geophysical supporting service and survey operation
Survey Support Operation

Marine Geophysical

01 / Seismic, bathymetry, positioning, and survey support

Marine Geophysical Survey

Marine geophysical work at THI covers 2D/3D High Resolution Marine Seismic, bathymetry, positioning, seabed imaging, geophysical logging, metocean support, and supporting field data services. The scope is selected around the survey objective, water depth, route or site condition, and required deliverables.

THI provides 2D/3D High Resolution Marine Seismic services for geohazard surveys and oil and gas exploration. The work combines high-technology acquisition systems, experienced personnel, efficient offshore operation, and integrated processing and interpretation.

Final processed HR 3D seismic volumes are prepared for high-quality, high-resolution interpretation so project teams can review shallow hazards, subsurface continuity, and exploration targets with greater confidence.

SeismicHigh Resolution and Ultra High Resolution seismic configurations are available.

AcquisitionSurvey depth may reach up to 2,000 m, depending on geology, with 3D data resolution of up to 6.25 m × 6.25 m.

SupportPositioning, topographic survey, bathymetry, metocean, geophysical logging, pumping test, slug test, and field data support.

DeliverablesAcquisition, processing, analysis, interpretation, and practical reporting aligned to client objectives.

Offshore geotechnical survey vessel and drilling system
Offshore Drill Rig Operation
Offshore geotechnical survey vessel and drilling system
Offshore Drill Rig Operation
Offshore geotechnical toolbox meeting and field coordination
Toolbox & Field Coordination
Offshore geotechnical drilling operation on deck
Deck Drilling Operation

Offshore Geotechnical

02 / Wireline CPT, sampling, coring, and downhole logging

Offshore Geotechnical Survey

Taka Hydrocore owns and operates geotechnical drilling rigs complete with heave compensated systems that can be installed on suitable vessels of opportunity. The rigs use standard 5.5-inch API drill pipe and can be configured for drilling, CPT, undisturbed sampling, coring, and downhole geophysical logging.

Wireline CPTu operations are performed with pore pressure measurement and field control aligned with ASTM D-5778, ISSMGE, British Standard, and ASTM practice. Real-time data acquisition allows the CPT engineer to monitor tip resistance, sleeve friction, pore pressure, inclination, and estimated soil properties during testing.

Downhole sampling is selected around soil condition, using hydraulic piston samplers for very soft to soft cohesive materials, push samplers for medium stiff to very stiff clay, thick-walled samplers for sand and hard clay, and triple core barrel systems for rock recovery. Samples are logged, photographed, protected, sealed, and prepared for laboratory transfer.

Drilling systemHeave compensated offshore drilling with API drill pipe and configurable drill string.

Wireline testingCPTu, BHA deployment, seabed frame reaction, and real-time acquisition workflow.

Sample controlUndisturbed sampling, coring, onboard description, sample protection, and laboratory handover.

Nearshore geotechnical drilling platform documentation
Nearshore / Platform Setup
Nearshore geotechnical drilling platform documentation
NearshorePlatform Setup
Nearshore field operation with crew and platform
NearshoreField Operation
Nearshore shallow-water drilling support platform
NearshoreShallow-Water Support
Nearshore modular pontoon platform from aerial view
NearshorePontoon Platform
Heba nearshore geotechnical platform operation
NearshoreHeba
Onshore geotechnical field drilling documentation
OnshoreField Drilling
Onshore downhole seismic field activity
OnshoreDownhole Seismic
Onshore geotechnical drilling rig operation
OnshoreRig Operation
Onshore geotechnical team preparation lineup
OnshoreField Preparation

Nearshore & Onshore Geotechnical

03 / Shallow-water and land-based soil investigation

Nearshore & Onshore Geotechnical Survey

THI combines nearshore and onshore geotechnical capability for projects that move between land, coastal, intertidal, jetty, reclamation, river, and shallow-water environments. The method is selected around site access, water depth, tide, soil condition, platform requirement, and the level of investigation needed.

Nearshore work can use wooden staging or wooden platforms in very shallow water, and modular pontoon systems for deeper shallow-water investigation down to approximately 25 m. CPTu on pontoon can be conducted using downhole CPT systems, with development toward jack-up rig applications for deeper and more reliable operation.

Onshore geotechnical drilling is commonly supported by SPT, Pressuremeter Test, Field Vane Shear Test, and CPT or CPTu. Sampling tools are selected around soil behavior, including Osterberg fixed piston samplers for very soft to soft soils, Mazier core barrel systems for alternating layers, and triple core barrel systems for rock formations.

NearshoreWooden staging, platform, and modular pontoon systems for shallow water drilling and CPTu investigation.

OnshoreLand-based drilling, SPT, pressuremeter, field vane, CPT, CPTu, and sampling for infrastructure and site investigation.

SamplingDisturbed and undisturbed sampling tools selected according to soil consistency and project standard.

OutputField records, sample documentation, laboratory follow-up, and practical geotechnical reporting for design decisions.

Exploratory drilling operation
Mining exploratory drilling supported by fit-for-purpose rigs and field supervision.

Exploratory Drilling

04 / Mining and resource drilling

Exploratory Drilling

THI provides mining exploratory drilling services focused on high-quality coring, suitable equipment selection, and qualified field geologist or supervisor support. Drilling can be performed using conventional or wireline methods in NQ, HQ, or PQ size.

Depth is configured around the project requirement, typically from 20 m to 700 m, and can be extended depending on rig selection and site condition. Sampling standards can be aligned with client requirements, including resource reporting programs such as JORC-oriented workflows.

MethodsConventional and wireline drilling using NQ, HQ, or PQ coring size.

Rig optionsSkid rigs for shallow to deep programs, including capacity down to 1,000 m.

MobilityWheel, tractor-mounted, and crawler-mounted drilling rigs for different site access conditions.

Hydrogeology drilling field work
Groundwater monitoring, water supply wells, and mining drainage drilling support.

Hydrogeology

05 / Groundwater monitoring and water supply

Hydrogeology Drilling

Hydrogeology drilling is intended to study groundwater behavior for environmental purposes, including landfill monitoring and pollution detection programs, as well as groundwater supply development.

THI has experience drilling and installing groundwater monitoring wells and water supply wells using PVC or stainless material. Installation diameter commonly ranges from 4-inch to 8-inch pipe, with depths from 20 m to 350 m and flow capacity that may exceed 55 m3/hour depending on aquifer condition.

EnvironmentalGroundwater monitoring wells for landfill monitoring and pollution detection studies.

Water supplyWell installation with suitable casing material, diameter, and depth configuration.

Mining drainageInclined drilling can be applied so the drilled hole intersects the water-bearing layer.

CPT Manta seabed geotechnical equipment on deck
Seabed CPT System
CPT Manta seabed geotechnical equipment on deck
Seabed CPTManta System
Vibrocore seabed sampling equipment documentation
VibrocoreSampling System
FT520 piston corer seabed sampling equipment
Piston CoreFT520 Corer
Vibrocore field operation documentation
Field WorkVibrocore Operation

Seabed Geotechnical

06 / Seabed CPT and vibrocore investigation

Seabed Geotechnical

THI provides seabed geotechnical survey capability through Seabed CPT, vibrocore, piston core, and shallow sampling systems. The work supports projects that need direct seabed data, recovered sediment samples, and near-surface soil information before design or construction decisions are made.

The method is selected around water depth, target penetration, soil type, vessel spread, deployment window, and laboratory testing requirement. Each activity is prepared with deck handling, positioning, sample control, and documentation workflow so the recovered data can be traced from field operation to technical reporting.

Seabed investigation can support route and site assessment, marine infrastructure planning, cable and pipeline corridors, geohazard screening, near-surface soil interpretation, and laboratory follow-up after sample recovery.

Seabed CPTDirect cone penetration testing for near-seabed soil behavior and strength profiling.

VibrocorePhysical sediment recovery for shallow subsurface description and laboratory testing.

Piston coreCore recovery for soft sediment sampling where controlled sample retrieval is required.

ApplicationUseful for pipeline routes, cable routes, marine facilities, near-surface hazard review, and seabed infrastructure planning.