Well Logging
Essential well logging services for the performance of drinking and mineral water investigation, engineering geology investigations for underground constructions, highways, metro, leak detection, control of technical condition of boreholes and wells, risk analysis, post-remedial monitoring and indication of geothermal energy
A wide range of services developed, and patented procedures, highly qualified staff, technical and technological equipment are used to perform measurements of the physical parameters of the rock environment, borehole casing and fluids filling boreholes through natural and artificial physical fields. Well logging has a very wide range of uses during the performance of various types of projects and although each task requires an individual approach, we are able to provide the necessary information to the building industry, waterworks, geology and hydrogeology.
Contact us
RNDr. Martin Procházka
T: +420 732 129 579
E: Martin.Prochazka@geotechnika.cz
Well logging for engineering geology
The outputs of well logging include lithological profiles, the degree of tectonic disturbance of rock, the mechanical properties of rock in-situ, crack detection and their spatial orientation, or the integrity of sealing walls. We detect water leakages from dams, we inspect geotechnical work on dams, the quality of in-situ injection, or the spatial patters of boreholes. We detect the shear surface in landslide areas and perform investigations at future or existing mining areas.
Checking the technical condition of wells and boreholes
We test inflow rates, perform visual inspections of the walls of boreholes using a TV camera, check the flow of water in the borehole and the functionality of equipment, the quality of the cementation and the packing, the condition of perforations, cavities behind the casing, and we recommend the further use of the source and suggest possible corrective measures.
Well logging for risk analysis, supervision and for various stages of remedial work
We determine the lithological profile, the horizontal and vertical flow in boreholes or the direction of horizontal flow, the overflow between permeable layers, the hydraulic conductivity of permeable layers, the preferential flow pathways, we estimate the level of risk and recommended further procedures.
Mineral and thermal water investigation, searching for sources of drinking water
We determine the overflow between permeable layers and design the well casing in relation to the determined permeable layers, we detect hydraulic short circuits caused by faulty well casing and we focus on the lithological profile, and the horizontal and vertical flow in the borehole.
Engineering geology and geotechnical engineering
Geophysical measuring for line buildings, underground buildings, dams, and foundations soils investigation, or slope stability investigation
Reference
Geophysical methods for branches such as geotechnical engineering, the environment, hydrogeology, construction, investigation of mineral raw deposits, and archaeology
Reconstruction of Observation Boreholes Network, Czech Hydrometeorological Institute – Supervision of hundreds boreholes of Czech Hydrometeorological Institute since 2003 for geological and hydrogeological assessment including technical condition of the nationwide network of groundwater observation boreholes in the Czech Republic
Well Logging for Prague Metro Lines since 1974 – Lines A, B, C, and D – Well logging during the site investigation of the metro lines for the detection of zones of tectonic disturbance, assessment of the risk of water leakage to the tunnel during the excavation work, specification of the geological structure and determination of the mechanical properties of the rock
Well Logging in Mineral and Thermal Water Wells – Well logging in dozens of wells in the West Bohemian region as well as other places in the Czech Republic and Slovakia, including deep well of mineral water in Bulgaria to determine the actual technical condition of the well due to a significant decrease in water flow and temperature
Development of Methodology for Identification and Numerical Modelling of Flow and Geochemical Interaction in the Fractured Environment of Compact Rock, Potůčky – Development of well logging methodology for the planned construction of Deep Geological Repository
Determination of water leaks in construction pits and control of the quality of injection works – Bratislava – River Park, ABC; Prague – Karlín, Invalidovna, Petrské Square; Austria – Linec; Slovakia – Gabčíkovo Waterworks; Hydro Power Plants – Štětí, Roudnice nad Labem, Liběchov, Litoměřice. Detection of water leaks from dams – Harcov Liberec, Les Království, Algar in Valencia, Proserpina in Extremadura, Guiamets in Catalonia, Vall-Tarazona in Aragon, dams on Guadiana River
Well Logging for Various Stages of Remedial Work – Pilsen – Bory, Spolchemie Ústí nad Labem, Spolana Neratovice, Unipetrol Litvínov, idustrial area Pardubice, Bohumín
Well Logging during Site Investigation for Railway Tunnels – Votice, Orlík, Choceň, Guadarrama – Spain, Talave/Cenajo – Spain
Well Logging during Site Investigation for Motorways and Motorway Tunnels – D8 Motorway – Dobkovičky, D3 Motorway – Hostěradice, D11 Motorway – Jaroměř, D11Motorway – Trutnov, R35 Expressway Staré Město, R35 Expressway Homole, D3 – České Budějovice Bypass, Valík Tunnel, Prague Ring Road, Tunnel Compex Blanka
Creation of a Database of Geological Data for the Czech Geological Service – Collection of geophysical data from archives of existing and already defunct companies
Checking the Technical Condition of Wells and Boreholes – Prague water supply and sewerage systems, dozens of wells for Severočeské vodovody a kanalizace, other water supply companies in the Czech Republic and private entities
