
Drilling contractor for deep wells, workover and HDD projects in oil, gas and geothermal energy

DrillTec GUT GmbH Großbohr- und Umwelttechnik
DeggendorfNew on Amplifa
About DrillTec
DrillTec GUT GmbH Großbohr- und Umwelttechnik, headquartered in Deggendorf, is an internationally active drilling contractor for deep wells and workover in the oil, gas and geothermal energy sector. Its service spectrum ranges from feasibility studies and regulatory engineering to well planning and the execution of wells with depths of up to 5,000 meters. The offering is complemented by trenchless pipeline installation (HDD), Casing Drilling, Coiled Tubing services, Dual Completion as well as Plug & Abandonment and Re-Abandonment. The company's own deep drilling rigs are compact and modular in design, feature automatic pipe handling, hydraulic top drive and innovative skidding systems for cluster projects and geothermal doublets. The company is part of the STREICHER Group and since 2000 has carried out numerous drilling projects in Germany and other European countries as well as in Azerbaijan, Georgia and Mali. Its customers include NAM, Shell, Innargi and Hydroma, among others.
- Site
- Deggendorf
- Processes
- Deep wells (oil, gas, geothermal energy), Horizontal directional drilling (HDD), Workover / well remediation, Casing Drilling, Coiled Tubing services, Dual Completion, Plug & Abandonment / well decommissioning, Well planning, regulatory engineering, feasibility studies
- Materials
- GRP casing, Casing with epoxy and glass-fiber inner coating (GRE), Casing with epoxy and glass-fiber inner coating
- Certificates
- ISO 9001, ISO 14001, ISO 45001, ISO 50001, SCC P (Petrochemicals, SCC-VAZ 2021), IEC 62443-2-4 (Industrial Control Systems), IADC Membership, SCC P (Petrochemicals), IEC 62443-2-4
- Founded
- 2000
- Industries
- Oil and Gas, Geothermal Energy, Hydrogen (geological hydrogen), Geothermal Heat, Hydrogen (natural/geological hydrogen)
- 01
Feasibility study
- 02
Regulatory engineering
- 03
Well planning
- 04
Drilling site logistics
- 05
Drilling of the well
- 06
Casing and completion work
- 07
Workover / Plug & Abandonment
Processes and Technology
GRP casing
Glass-fiber reinforced plastic casing for geothermal wells, used, among other applications, in the Thisted-5 well in Denmark.
Casing with epoxy and glass-fiber inner coating
Coated casing for injection and production wells in geothermal energy, used in the Trias Westland project over lengths of 3,000 m and 2,600 m respectively.
Locations

Deggendorf
DEHeadquarters, operational management of drilling projects
- Materials
- GRP, GRE-coated casing
- VDD 370 deep drilling rig (depth capacity 5,000 m)
- VDD 200 deep drilling rig (depth capacity 3,500 m)
- VDD 120-E deep drilling rig (hook load 120 t)
- TB 2100S Explorer mobile drilling rig (hook load 200 t, max. depth 3,500 m)
- Synergy I (370 t hook load, rack-and-pinion drive)
- Synergy 2
- Compact Rig (200 t hook load)
- CombiRig
- 2 x Mud Pump HHF 1000 (350 bar)
Inside the production









Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Deep wells (oil, gas, geothermal energy)Drilling Technology | – | 5,000 m depth | – | – | Hydrocarbon reservoirs, Geothermal reservoirs |
| Horizontal directional drilling (HDD)Drilling Technology | – | 3,060 m crossing | – | – | – |
| Workover / well remediationDrilling Technology | – | ~3,000 m (workover VDD 120-E) | – | – | – |
| Casing DrillingDrilling Technology | – | – | – | – | – |
| Coiled Tubing servicesDrilling Technology | – | – | – | – | – |
| Dual CompletionDrilling Technology | – | – | – | – | – |
| Plug & Abandonment / well decommissioningDrilling Technology | – | – | – | – | – |
| Well planning, regulatory engineering, feasibility studiesEngineering | – | – | – | – | – |
9 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Deep drilling rig | DrillTec/STREICHER VDD 370 | – | Depth capacity 5,000 m | – | Deggendorf |
| Deep drilling rig | DrillTec/STREICHER VDD 200 | – | Depth capacity 3,500 m | – | Deggendorf |
| Deep drilling rig | DrillTec/STREICHER VDD 120-E | – | Hook load 120 t, depth capacity ~1,600 m (~3,000 m workover), footprint 22 m x 35 m | – | Deggendorf |
| Mobile drilling rig | STREICHER TB 2100S Explorer | – | Max. depth 3,500 m (11,500 ft), hook load 200 mt, operation -40°C to +40°C | 2013 | Deggendorf |
| Deep drilling rig | Synergy 2 | – | – | – | – |
| Deep drilling rig | Synergy I | – | Hook load 370 t, rack-and-pinion drive | 2005 | – |
| Deep drilling rig | Compact | – | Hook load 200 t | 2009 | – |
| Deep drilling rig | CombiRig | – | – | – | – |
| Mud Pump | STREICHER HHF 1000 | 2 | Pressure 350 bar, liner 4.5" to 6", stroke 10" | – | – |
Additional services
Reference customers
Quality and Certificates
Work processes are governed by a structured quality management system with continuous improvement processes. Safety, health, environment and quality (SHEQ) are an integral part of daily work.
| Evidence | Deggendorf |
|---|---|
| ISO 9001 | |
| ISO 14001 | |
| ISO 45001 | |
| ISO 50001 | |
| SCC P (Petrochemicals) | |
| IEC 62443-2-4 | |
| IADC Membership |
History
- 2000
Foundation of DrillTec GUT GmbH Großbohr- und Umwelttechnik to carry out HDD projects worldwide
- 2003
First deep well: geothermal well GTB 1 in Speyer with the CombiRig
- 2004
Signing of the first drilling contract with NAM
- 2005
Commissioning of the Synergy I, first automated deep drilling rig with 370 t hook load; HDD project pipeline connection Mittelplate in the North Sea with five HDD rigs
- 2009
Commissioning of the Compact Rig with 200 t hook load
- 2010
HDD project 'Qeshm Island': at 3,060 m the longest HDD crossing ever drilled with a single rig
- 2012
Commissioning of the mobile drilling rig TB 2100 S 'Explorer'
- 2013
Synergy 2 awarded 'Land Rig of the Year 2013' by Shell
- 2015
15 years of DrillTec
- 2018
HDD project 'WREP' in Azerbaijan and Georgia; geothermal triplett in Luttelgeest (Netherlands)
- 2020
20th company anniversary
- 2021
Contract concluded with Hydroma for hydrogen wells in Mali
- 2022
Completion of the hydrogen project in Mali; 30th geothermal well drilled
- 2023
First well in Denmark since 2017
- 2024
Contract concluded with NAM for several wells and workover; exploration wells for the largest geothermal power plant in Europe in Aarhus
- 2025
Dr. Hans-Jürgen Weikert retires; Ralf Glettler becomes Managing Director alongside Manfred Uttendorfer