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Book Chapter

Use of the Seismic Receiver Chain SEKAN 5 within the Framework of Integrated Seismics in the Oberpfalz


Mylius,  J.
KTB Reports, External Organizations;

Nolte,  E.
KTB Reports, External Organizations;

Scharf,  U.
KTB Reports, External Organizations;

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Mylius, J., Nolte, E., Scharf, U. (1990): Use of the Seismic Receiver Chain SEKAN 5 within the Framework of Integrated Seismics in the Oberpfalz. - In: Emmermann, R., Lauterjung, J., Umsonst, T. (Eds.), KTB Report 90-6b: Integrated Seismics Oberpfalz 1989; Longterm Logging and Testing Programme of the KTB-Oberpfalz VB, Potsdam : Deutsches GeoForschungsZentrum GFZ, 159-179.

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5011699
The tool chain SEKAN 5 developed and constructed by PRAKLASEISMOS was proved to be capable of withstanding long-term operation under the given pressure and temperature conditions in a chemically active Dehydrill HT mud in the KTB Oberpfalz VB lA (350 bar, 110 °C, pH 10-11). The tool comprises five identical seismic receiver sondes which are equipped with a three-component receiver system, an electrically driven clamping unit and a magnetic compass system. The results of the reference tests and the measured compass values were subjected to critical checks. For the observation period the reference tests on different days for each individual sonde indicated good agreement with respect to specific signal forms. The differences in orientation determined from the seismic data and the compass values are between -11 degrees and -26 degrees. The cause of the differences can be explained in that the wave paths lie outside of the observation plane.