Fibre Optic Sensing as Borehole Seismic Method
| Název práce v češtině: | Snímání optickými vlákny jako metoda seismického měření ve vrtu |
|---|---|
| Název v anglickém jazyce: | Fibre Optic Sensing as Borehole Seismic Method |
| Klíčová slova anglicky: | Fibre Optic Sensing, Distributed Acoustic Sensing, Borehole measurements, Fiber Bragg grating, Vertical Seismic profiling, LT-1 |
| Akademický rok vypsání: | 2019/2020 |
| Typ práce: | bakalářská práce |
| Jazyk práce: | angličtina |
| Ústav: | Ústav hydrogeologie, inženýrské geologie a užité geofyziky (31-450) |
| Vedoucí / školitel: | prof. RNDr. Tomáš Fischer, Ph.D. |
| Řešitel: | skrytý - zadáno vedoucím/školitelem |
| Datum přihlášení: | 20.11.2019 |
| Datum zadání: | 20.11.2019 |
| Datum odevzdání elektronické podoby: | 15.06.2020 |
| Datum proběhlé obhajoby: | 14.07.2020 |
| Oponenti: | Ing. Jana Doubravová, Ph.D. |
| Předběžná náplň práce |
| The aim of the thesis is to give a review of methods for seismic measurements in boreholes, which experienced a dynamic development in recent years. The student will describe the types of seismometers including classical passive electromagnetic geophones, optical sensors and the newest technologies of distributed acoustic sensing. Different aspects will be compared including the sensitivity, frequency range, measured quantity and others. Suitability of different approaches for specific applications in structural seismology, oil and gas production and other fields will be discussed. The practical part will address a test measurement with chosen method in a borehole and qualitative comparison of used methods. The first option involves comparison of VSP measurements using geophone and DAS in the Litomerice borehole. The second option involves comparison of noise measurements on the surace and in the depth to obtain the response function of the shallow layers. The trird option addresses verification of the velocity model obtained by refraction seismics using the borehole geophone. |
| Předběžná náplň práce v anglickém jazyce |
| The aim of the thesis is to give a review of methods for seismic measurements in boreholes, which experienced a dynamic development in recent years. The student will describe the types of seismometers including classical passive electromagnetic geophones, optical sensors and the newest technologies of distributed acoustic sensing. Different aspects will be compared including the sensitivity, frequency range, measured quantity and others. Suitability of different approaches for specific applications in structural seismology, oil and gas production and other fields will be discussed. The practical part will address a test measurement with chosen method in a borehole and qualitative comparison of used methods. The first option involves comparison of VSP measurements using geophone and DAS in the Litomerice borehole. The second option involves comparison of noise measurements on the surace and in the depth to obtain the response function of the shallow layers. The trird option addresses verification of the velocity model obtained by refraction seismics using the borehole geophone. |