The case for separate sensor processing: Meeting the imaging challenge in a producing carbonate field in the Middle East

Abstract

Carbonate platforms in the Middle East continue to represent an important source of hydrocarbon reserves. For more than 20 years, interpretation and attribute extraction from time-based 3D seismic imaging products have been base geoscience data in this production setting. With the continuing advances in seismic imaging, geophysicists have an obvious interest in applying the most current algorithms to their projects. However, many of these carbonate reservoirs have accompanying imaging challenges that cannot be addressed solely through the application of new imaging technology. Alternative processing strategies must be considered, either to replace more conventional approaches and/or to prepare the data so that they conform to the limitations of the imaging algorithm.

3D Seismic Survey Design, Second edition

“…This principle is also explained by Barr (1997). Many papers describe techniques for combining the hydrophone and geophone signals to remove the receiver ghost and surface reflections (e.g., Paffenholz and Barr, 1995;Ball and Corrigan, 1996;Soubaras, 1996;Amundsen et al, 2001;Brunellière et al, 2004;Reilly et al, 2008Reilly et al, , 2010. The hydrophone and vertical geophone not only record ghosts and multiples reflected from the water surface differently, but their noise behavior is quite different as well (as seen in Figure 5.52).…”

“…The hydrophone and vertical geophone not only record ghosts and multiples reflected from the water surface differently, but their noise behavior is quite different as well (as seen in Figure 5.52). Reilly et al (2008Reilly et al ( , 2010 take this into account by separate processing of both components for a merge at the last moment. Their papers show considerably improved results over older techniques that combine the two components at an early stage in the processing.…”

Shallow Gas Discrimination of Multicomponent Seismic Data Using Seismic Physical Modeling

“…다성분 탄성파 탐사는 석유 ․ 가스 개발을 위한 목적으로 주로 활용하고 있으며, 지층 내 석유 ․ 가스 판별, 균열 분포 분석 및 규명, 암상 구분, 저류층 모니터링 등에 활용하고 있다 (Farfour and Yoon, 2016). 외국에서는 지층 내 탄화수 소 판별 및 분석 (Hanitzsch et al, 2007;Reilly et al, 2010), 균열대 분포 및 규명 (AI-Hawas et al, 2003;Jianming et al, 2009), 암상 구분 (Dumitrescu et al, 2014), 저류층 모 니터링 (Van Gestel et al, 2008;Davis, 2015) 등 다양한 분 야에서 연구를 수행하고 있다. 국내에서는 가스하이드레 이트 유망지역인 울릉분지에서 해저면 탄성파 기록계 (ocean bottom seismometer, OBS)를 통해 취득한 다성분 자료를 이용하여 P파와 모드변환 S파 속도분포를 구하는 연구를 수행하였으며 (Kim and Byun, 2011), 다성분 탄성 파 자료에서 P파와 PS파를 분리하기 위하여 회전 변환과 중합을 이용한 기법을 제안하였다 (Jeong et al, 2013).…”

Marine, seabed, and land seismic equipment for broadband acquisition: a review

“…In addition, an important mismatch occurs between omni‐directional hydrophone data contaminated by reverberations and polarised motion sensor data contaminated by surface waves. This is particularly pronounced at shallow depths and on hard sea bottom (Reilly, Shatilo and Shevchek ). Even after scaling the two sensors, such discrepancy prevents one from achieving broadband data.…”