Open AccessOBTAINING HIGH-QUALITY SEISMIC DATA IN THE NORTHERN PERM KRAI SWAMPY AREAS
Author(s) -
Iurii M. Zakharov,
I.S. Putilov
Publication year - 2020
Publication title -
vestnik permskogo nacionalʹnogo issledovatelʹskogo politehničeskogo universiteta. geologiâ, neftegazovoe i gornoe delo
Language(s) - English
Resource type - Journals
eISSN - 2305-1140
pISSN - 2224-9923
DOI - 10.15593/2224-9923/2020.2.2
Subject(s) - geology , seismology , seismometer , data quality , hydrocarbon exploration , remote sensing , engineering , tectonics , metric (unit) , operations management
The study undertakes to solve the problem of obtaining reliable seismic data in swampy areas. Raw hydrocarbon deposits in the North of Perm Krai are a promising asset, but their geological survey is constrained due to problematic surface conditions. Seismic exploration is the most detailed and reliable remote method of geological subsurface studies, but any state-of-the-art seismic 3D survey requires covering a much larger surface area than an actual area of a targeted subsurface survey. Swamps tend to strongly attenuate seismic waves, thus complicate a further geological interpretation of obtained data, and significantly limit the choice of engineering tools and techniques of surveying. Also it is impossible to avoid the influence of hard surface conditions in territories extending over hundreds of square kilometers. In order to explore the possibility of obtaining high-quality data in such conditions, we offer a comprehensive pilot survey using various recording and seismic wave excitation facilities. We analyzed and explored the possibility of solving this problem by using advanced seismic exploration methods. The study looks into the technology of obtaining primary data and into the stage of information processing for its further geological interpretation. This is the first time that Geoton seismic pulse source and GSONE high-sensitivity seismic receivers have been used for these purposes. According to the findings, there is an obvious advantage of using the blast over pulse source, especially in the swamp bed itself. At the same time, Geoton proved to be highly eco-friendly and safe, which makes it possible to use it in seismic exploration works of inhabited areas. The results of processing the pilot survey data show that the single seismic receivers produce wave patterns with the best quality and accuracy. The paper offers the seismic exploration techniques in swampy conditions and in territories that have increased requirements to environmental protection and safety.