541-0489/08 – Drilling Exploration and Rotary Drilling (VPHV)
Gurantor department | Department of Geological Engineering | Credits | 4 |
Subject guarantor | doc. Ing. Martin Klempa, Ph.D. | Subject version guarantor | doc. Ing. Martin Klempa, Ph.D. |
Study level | undergraduate or graduate | Requirement | Compulsory |
Year | 1 | Semester | summer |
| | Study language | English |
Year of introduction | 2019/2020 | Year of cancellation | |
Intended for the faculties | HGF | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
The main goal of this subject is to make students acquainted with the basic methods used by drilling geological – exploratory and operating – technical boreholes. Within the frame of study the students will learn to define basic methods of drilling these types of boreholes and to describe and characterize technical means and technological processes used during their realization. They can apply their theoretical knowledge within the frame of the computation tutorials, the result of which will be a simple executed project of a deep oil and gas exploitation well (borehole) – (geological, technical and technological part of the project). Within the frame of its solution they will be able to solve by use of the calculations the construction of the well depending up the geological and geotechnical conditions of the service area, where it is situated. Within the frame of the project elaboration the students will find the suitable solution varieties of the several partial tasks, to analyse these select solution processes and to propose a final form of a deep well project by use of synthesis optimum varieties. The students must be able to give reasons for the designed construction of the well and to defend it with a view to geological and technical aspects of drilling. Last but not least, the student have to learn how to judge the importance of information they will meet during their study, to compare its importance and point out this which is decisive for their next professional experience.
Teaching methods
Lectures
Seminars
Individual consultations
Tutorials
Experimental work in labs
Field trip
Teaching by an expert (lecture or tutorial)
Summary
The subject offers the basic information about the methodology of drilling exploration. It is focused on the problems connected with drilling geological exploratory and operating technical boreholes (expecially the boreholes used for the purposes of investigation and exploitation of oil and gas deposits, boreholes used for groundwater tapping; quarrying boreholes, underground mining boreholes etc.). The students have also possibility to get acquainted with the new modern technologies and technical means used in drilling exploratory activity and deep hole drilling. Within the frame of the lectures and tutorials they can get acquainted with the fundamental problems of borehole projecting (designing). The subject is intent on these next topical spheres.
Primary problems of well projecting – principles of well projecting, predicting of geological profile and its drill – technological analysis, pressure conditions in the wells and their analysis. Disintegration of rocks in drilling process. Drilling tool classification according to rock drilling disintegration. Drilling tools – roller bits – construction, fundamentals of kinematics, jet bits, bit option for various rock types. Drilling drive – oprimum drilling drive, option of the main drilling drive parameters. Drilling string – functional composition of drilling string, critical stress calculation. Casing string – functional composition of casing string, critical stress calculation. Well design, casing methods, casing string failures. Well
cementation, cementing mixtures, cementing materials and cement additives, well cementation technology. Project of vertical well and calculations connected with solution of technical and technological parts of the well project.
Compulsory literature:
Recommended literature:
Chugh, P.C. (1991): High Technology in Drilling and Exploration, New Dehli, India
Baker, R. (1994): A Primer of Oilwell Drilling; basic text of oil and gas drilling; 5th Edition; published by PETEX and IADC
Mazáč, J. (2005): Drilling Technologies, university mimeographed; VŠB-Technical University of Ostrava, Publishing Centre of VŠB-TU Ostrava
Pinka, J. et al. (2007): Borehole Mining, university textbook, Publishing Centre/AMS, F BERG TU in Košice
Additional study materials
Way of continuous check of knowledge in the course of semester
Písemné testy, zkouška je písemná s ústním zkoušením.
E-learning
Other requirements
study of recommend literature
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Basics of the borehole drilling design
2. Evaluation of the predicted geological profile in terms of determining the drilling technique and technology
3. Analysis of pressure conditions during the drilling
4. Rocks drillability – working process of the drilling tools, various influences on strength and deformability of rocks during its disjunction
5. Classification of the drilling tools
6. Design of roller-cone drilling bits, basis of roller-cone drilling bits kinematics, selection of the bit for various rock types
7. Drill string – work process of the drill string inside the borehole – functional assessment of drill strings for various types of boreholes
8. Drill string malfunctions, precautions to the drill string failures
9. Drill string straining calculation
10. Casing string - work process of the casing string inside the borehole, casing string straining analysis, lowering and stabilization of the casing string, casing string failures, casing string straining calculation
11. Drilling regime – optimal and reasonable drilling regime, classification of drilling regime – its measuring and monitoring
12. Technology of borehole cementation – calculations of cement volume, pressure and time for cementing borehole
13. Break downs inside the borehole – methods and tools for removal of the break down, methods of overcoming pressure effects inside the borehole
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction