Hydrographic Survey
The field which measures and describes the attributes that affect offshore oil exploration, dredging, marine construction and marine navigation is Hydrographic Survey. Hydrographic Surveys are carried out in line with International Hydrographic Organisation's specifications. Special Publication No. 44 to obtain information on water depths in:- Ports, - Anchorages, - Rivers, - Inland Water Ways, - Dams, - Reservoirs to name a few.It requires safe navigation, project-cum-engineering, irrigation, tidal power, tourism, inland water ways, pre-dredging, progressive and post-dredging, siltation, erosion, pollution, flood control etc. The bathymetry data is acquired using Single Beam Dual Frequency Echo Sounder and MultiBeam echo sounder.
Geophysical Survey
Geophysical surveys determine characteristics of the Earth’s subsurface by measuring the physical differences between types of rock or physical discontinuities without seeing them, by digging, drilling or tunnelling. The goal is to produce maps or models that indicate the earth’s geography, stratigraphy, rock distribution and geological structure delineation. Geophysical surveys are classified as seismic and non-seismic, where seismic is perhaps the most common geophysical technique. Geophysical surveys include magnetic and electromagnetic surveys, gravity and gravity gradiometer surveys, seismic surveys, and multispectral surveys and they can be conducted on onshore (land) and offshore (marine).TEGIPL Equipments:1. CNav Veripos, and Vector Pro Positioning System2. Multibeam and Single Beam Dual Frequency Echo Sounder3. Side Scan Sonar4. Sub Bottom Profiler5. Magnetometer6. Motion Sensors7. Gyro8. Grab Sampler
Land / Drone Survey
There are several reasons why land surveyors are increasingly adding drones to their portfolio of instruments. In essence, using a drone can vastly reduce the time spent collecting accurate data, by acquiring raster data from the sky – in the form of geo-referenced digital aerial images, with resolutions as sharp as 1.5 cm (0.6 in) per pixel – you can gather millions of data points in one short flight. Similarly, using a survey-grade drone capable of receiving data corrections streamed from a base station or via VRS to achieve absolute X, Y, Z accuracy of down to 3 cm (1.2 in) – without needing Ground Control Points, is time efficient. Lastly, staff safety is improved when measuring sites such as mines, unstable slopes and transport routes. Simply choose take-off and landing locations that are out of harm’s way.TEGIPL Equipment’s:1. Long Duration Flight Drones2. RTKs3. 3D Laser Scanners4. Ground Penetrating Radars
Positioning Services
We also provide precise positioning for numerous critical activities offshoreDuring rig positioning next to an subsea installation, we offer highly accurate positioning equipment and experienced personnel to carry out the operations.Services include by not limited to
- Jacket/platform installation
- Rig moves
- Subsea installations
- Vessel positioning
- Diver positioning
- ROV positioning
- Navigation Buoys
Marine Consultancy and Project Management
We also undertake turn key project to manage clients requirement right from planning stage, execution and completion to specific requirements.On contract award, a dedicated Project Manager is allocated as a single point of contact for survey operations. The Project Manager remains the focal point for services throughout the field work phase and is responsible for liaising with the client on technical issues, and for the development of appropriate survey project specific procedures. The Project Manager has day to day responsibility for the fieldwork execution, and works closely with the field teams, from initial briefing through project execution, and delivery of the final report. All operations are supported by the company’s Quality, HSE, Engineering and Technical departments.
