Abstract
During this thesis, two drilling projects of the Oberkling gas storage campaign were accompanied and have been investigated directly. A profound analysis of the used drilling bits and bottom hole assemblies (BHA) was performed in order to optimize performance. Results of the evaluation were directly implemented in the on-going planning. The thesis covers an introduction into the challenging geological structure and gives a general overview of IADC’s bit dull grading and bit wear. RAG’s sensor system is introduced and presented as the foundation of further analysis with basic tools for a quick evaluation of the situation at hand. In addition, a detailed inspection of a roller cone bit used in the Oberkling well OKSP-001 documents its damage as investigated in Smith bits’ reliability center. An analytical examination of each run was performed in order to detect shortcomings. A final discussion includes the recommendation of a different BHA configuration along with the economic evaluation of such change.
Translated title of the contribution | Optimierung der Meißelwahl und des BHA-Designs für das Oberkling Gas Speicher Bohrprojekt |
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Original language | English |
Qualification | Dipl.-Ing. |
Awarding Institution |
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Supervisors/Advisors |
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Award date | 30 Mar 2012 |
Publication status | Published - 2012 |
Bibliographical note
embargoed until nullKeywords
- optimization
- bit
- RAG
- oberkling
- gas storage
- BHA
- dulling
- bit wear
- conglomerate
- clay marl
- roller cone
- TCI
- PDC
- interbedding