Application of high definition seismic technology in severe near-surface seismogeological surroundings

• Autorzy: Tabakov A. A. , Ferentzi V. N. , Stepchenkov Y. A. , Muhin A. A. , Muhin D. A. , Kolosov A. S. , Bartoń R.
• Konferencja: Geopetrol 2012 : Nowoczesne technologie pozyskiwania węglowodorów w warunkach lądowych i morskich : międzynarodowa konferencja naukowo-techniczna
• Języki publikacji: EN

Abstrakty

EN

Complex near surface conditions sometimes provide unresolving challenge to traditional seismic processing. This kind of conditions may take place for example if high level of noises is combined with high amplitude variations of velocities in the upper part of section. This may be often met in permafrost areas with thawing zones and in mountain areas. Two main specific procedures from High Definition Seismic (HDS) technology are applied to fit these challenges. One is iterative wave field analysis instead of usually applied detection of signals among noises and the other is "Polycor" static correction method with high resistance to noises. The examples are shown for low frequency static shifts for mountain relief and midi frequency static shifts for thawing zones in permafrost surroundings. In the first case static shifts with period of 20 km were determined and in the second one amplitude of static shifts with period of about 0,5 km was about 60 ms. As the results of wave field analysis with iterative adjustment of different types of noises and useful signals reliable reflections were detected in original seismograms with high level of noises and high amplitude midi frequency static shifts were reliably determined. Coherent velocity analysis showed that signal to noise ration was increased more than ten times. The HDS section obtained compared to traditional processing technology showed better correlation of reflection boundaries in full time range, reliable structural positioning of productive well and reasonable positioning of projected well.

Słowa kluczowe

EN

seismic technology; surroundings; processing technology

• Wydawca: Instytut Nafty i Gazu - Państwowy Instytut Badawczy
• Czasopismo: Prace Naukowe Instytutu Nafty i Gazu
• Rocznik: 2012
• Tom: nr 182 wyd. konferencyjne
• Strony: 245--249
• Opis fizyczny: Bibliogr. 3 poz., rys., wykr.

Twórcy

autor

Tabakov A. A.

• Geovers Ltd., Moscow, Russia

autor

Ferentzi V. N.

• Geovers Ltd., Moscow, Russia

autor

Stepchenkov Y. A.

• Universal Intellectual Systems, St. Petersburg, Russia

autor

Muhin A. A.

• Universal Intellectual Systems, St. Petersburg, Russia

autor

Muhin D. A.

• Universal Intellectual Systems, St. Petersburg, Russia

autor

Kolosov A. S.

• Universal Intellectual Systems, St. Petersburg, Russia

autor

Bartoń R.

• Instytut Nafly i Gazu, Kraków

Bibliografia

• [1] Табаков А.А., Ференци В.Н., Мухин А.А., Степченков Ю.А., Колосов А.С., Мухин Д.А. — Сейсморазведка Высокой Четкости (СВЧ) — бескомпромиссный подход к регистрации и обработки сейсмических данных: основные положения, регистрация данных, анализ волновых полей: Вестник ЦРК Роснедра 2010, 4
• [2] Stepchenkov Yu.А., Muhin D.A., Kolosov А. S., Muhin А.А., Tabakov А.А., Ferentsy V.N. — Staric corrections by "Polycor" approach in High Definition Seismic technology. 11th Conference аnd Exhibition "Galperin Readings — 2011 ", Moscow
• [3] Tabakov А.А., Ferentsy V.N., Kolosov A.S., Muhin А.А., Muhin D.A., Stepchenkov Yu.А. — Substraction of partly irregular waves in СМР geometry in High Definition Seismic technology. 11th Conference and Exhibition "Galperin Readings — 2011", Moscow