• Leer Z 3 a: Sidetrack of deep gas well (sidetrack through 2 casing strings; 4690 m TD), Drilling Engineering, Tendering, Drilling Operations Management for Preussag Energie

• Gas-Storage Kalle: 2 storage wells: (horizontal wells; 2355m resp. 2460 m TD), Drilling Consulting, Drilling Operations Management for VEW Energie

• Japanese Ultra-deep Drilling and Geoscientific Experiments Project (JUDGE): Contribution of Chapters (Evaluation of KTB-experience, recommendations for proceeding in JUDGE-project) to feasibility-study with international participation for Japanese Geological Survey/Japanese Metal and Chemical Corporation (JMC)
  

• Rieth 1: Re-evaluation of a casing 2-stage cementation (part of an investigation of potential hazards of a CBM-project for CONOCO)
  

• Gas-Storage Kalle: Re-evaluation of existing wells concerning cementing quality and performance (part of an investigational study of possible storage leaks) for VEW Energie
  

• San Andreas Fault Zone Drilling Project: Evaluation of drilling concept , budgeting for GeoForschungs-Zentrum Potsdam (GFZ)
  

• Volkenroda FL Vo 97: Flooding well for old potassium mine (directional well, 4 m target, 1007 m TD), drilling engineering, -operations supervision and management for GVV
  

• Cavern Storage Teutschenthal: 4 cavern wells (3 wells for new caverns, 1 in existing cavern; 800 - 1200 m TD): drilling operations supervision and management for BSL
  

• Cavern Storage Project "Reckrod": Drilling of 4 new wells, and completion of 2 old wells: Drilling consulting for GASUNION and PLE/Daldrup, participation in tendering
  

• Study "Investigation of Multi-Lateral Drilling & Completion-Technique as a Possible Alternative to Frac-Treatment in Deep Tight Gas Reservoirs" for Wintershall
  

• Study "Evaluation of Alternative Well Design Concepts for Deep Gas Wells in the Emsland-Area" for Wintershall (well with alternative design was successfully implemented in late 1997)
  

• Cavern Storage Ohrensen: 3 new wells: Drilling consulting for DOW Deutschland Inc.
  

• Gas Storage Bierwang: "Feasibility of Storage-Improvement by a Horizontal Side-Track of an Existing Well": Participation in elaboration of study for Ruhrgas/PLE (elaboration of drilling related part)

• Gas Storage Bierwang: New storage well: Drilling consulting (trouble shooting) for Ruhrgas/PLE

• Barrien 5T a: Feasibility Study of a "Minimum Cost Sidetrack" for Wintershall

• Prinos PA-29: Sidetrack of an existing production well (2 targets), feasibility-study, drilling engineering, supervision for Kavala Oil S.A., Greece

• Prinos PA-30: Sidetrack of an existing production well (4 targets), feasibility-study, drilling engineering, supervision for Kavala Oil S.A., Greece

• Prinos PA-31: Sidetrack of an existing production well (4 targets), drilling engineering, project management & supervision for Kavala Oil S.A., Greece

• Prinos Epsilon 1/1a: Drilling engineering of exploration well for Kavala Oil S.A., Greece

• Kallirachi 1: Drilling engineering of exploration well for Kavala Oil S.A. (in progress)

• Georgsdorf 121 a: Drilling engineering for BEB Erdgas & Erdöl GmbH

• Peckensen 179 a: Drilling engineering, review of work schedule for EEG Erdgas Erdöl GmbH

• Salzwedel 125 a: Drilling engineering, review of work schedule for EEG Erdgas Erdöl GmbH

• Salzwedel 132 a: Drilling engineering, review of work schedule for EEG Erdgas Erdöl GmbH

• Carrico Gas Storage Project: Re-evaluation of casing cementations for KBB/Transgas

• Geothermal Project Bremerhaven TEWS: Drilling-related consulting for the project management of swb Stadtwerke Bremen/Bremerhaven (in progress)

• Geothermal Project München-Riem: Drilling-related consulting and engineering for the project management of SWM Stadtwerke München via a joint cooperation with Erdwerk (in progress)
   

• Study „Lund DGE 1 – Analysis of Technical Situation and possible Reasons for Stuck Pipe” for KCA Deutag Drilling GmbH, Bad Bentheim
   

• Study “Feasibility of Usage and preferred Modifications of existing Wells in a German Gas Storage in Combination with higher Storage Pressure” for RWE-DEA, Hamburg
   

• Investigation “Actual State of and necessary Work on existing Wells of an old Oil- and Gasfield for future Use as Underground Gas Storage” for BEB/EMPG, Hannover
   

• Investigation & Evaluation “Available Safety Factors of the Anchor Casing Strings of the Gaswells in N-Germany” for BEB/EMPG, Hannover
   

• Theoretical Investigation & Evaluation “Investigation of Actual State of Fluids in Annulli and possible Impact on Well Integrity” for EMPG, Hannover
   

• Investigation & Evaluation “Available Safety Factors of the Anchor Casing Strings of  Gas Storage Wells in Berlin” for GASAG, Berlin
   

• Investigation & Evaluation “Available Safety Factors of the Anchor Casing Strings of selected  Wells in Germany” for  Gaz de France, Production & Exploration Germany, Lingen
   

• Investigation & Evaluation “Available Safety Factors of the Anchor Casing Strings of the Gaswells in N-Germany” for RWE Dea Production Dept. Lower Saxony
   

• Gas Storage Project Tschech Republik: Drilling Engineering, consulting and tendering of 12 new wells for RWE Gas Storage s.r.o., Prag
   

• Gas Storage Project UK: Drilling Engineering, consulting and tendering of 10 new wells for RWE Energy AG, Dortmund
   

• Geothermal Project Offenbach/Queich: Drilling Engineering, consulting and drilling supervision for HOTROCK, Karlsruhe
   

• Geothermal-Projekt Mauerstetten: Drilling Engineering, consulting and tendering for Geothermie Allgäu/EXORKA Intl., München
   

• Geothermal-Project Peiting: Drilling Engineering, consulting and tendering for GreenEnergy, Hannover
   

• Geothermal-Project Taufkirchen: Drilling Engineering, consulting and tendering for Geotec Consult, Markt-Schwaben
   

• Geothermal-Project Erding: Drilling Engineering, consulting and tendering for Geotec Consult, Markt-Schwaben
   

• Geothermal-Project Utting: Drilling Engineering and consulting for Aufwind Schmack GmbH, Regensburg
   

• Geothermal-Project Bernried: Drilling Engineering and consulting for Bernried Erdwärme AG, Bernried
   

• Geothermal-Project „Sonnengarten GTB“ Zürich/CH: Drilling Engineering for Daldrup & Soehne AG, Ascheberg; consulting and project follow-up for ewz Elektizitätswerke Zürich/CH
   

• Several deep geothermal wells: Particular Drilling Engineering for various customers (casing design, T/D-calculations, borehole hydraulics, min. rig requirements, etc.)

Numerous Wells On-Shore: Drilling supervision for various customers (Operator Toolpusher), e.g.

BEB (various gas- and gas storage wells)
Preussag Energie (various oil- and gas wells)

-           Ruhrgas (gas storage Sandhausen)
-           Saarferngas (gas storage Frankenthal)
-           VEW Energie (gas storage Kalle)
-           Wintershall (gas storage Rehden; oilfield Emlichheim)
-           Kavala Oil (oilfield offshore Greece)

Elaboration of an Equipment- und Service-Review Manual as part of a Quality Management System for Optimization   of Drilling Projects for the companies BEB, Mobil, OMV, Preussag, RWE-DEA, and Wintershall

Elaboration of a Recommendation for the optimized Use of Drillstring-Connections  under High Combined Loads, with special target to ERD-wells for DEUTAG Europe

Technical Feasibility Study ”Energy- & Fluid Transport in Fault Zones of the Continental Crust at the KTB-Location” for German Research Foundation (DFG)

Several Technical Expertises for various customers (operating companies, service companies, insurances, Mining Authorities,...)

Several Wells On- and Off-Shore: Evaluation of  borehole circulating temperature BHCT) from circulation experiments before running casing/liner, recommendations for preparing and performing critical cementing jobs

Educational Seminars: Several drilling related courses, held at the ”Drilling School Celle” (e.g. 3 courses for high-level Chinese delegations from The Ministry of Geology and Mineral Resources, Chinese Academy of Geological Sciences, National Research Center)