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The enlightenment on shale gas exploration and development in China getting from Eagle Ford in America

Zhou Shouwei,Jiang Wei,Zhang Chunyang,Fan Baitao

Strategic Study of CAE 2012, Volume 14, Issue 6, Pages 16-21

Abstract: CNOOC has invested more than 1 billion US dollar to buy 33.3 % interest of Eagle Ford, where its reservestechnology, the author, as a leader, accompanied by a professional team has had a tour observation to EagleFord in America and has got a further understanding on key technologies in horizontal drilling and multi-stages

Keywords： Eagle Ford shale gas exploration and development enlightenment

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Reverse-Time Migration from Rugged Topography to Image Ground-Penetrating Radar Data in Complex Environments Article

Bradford,Janna Privette,David Wilkins,Richard Ford

Engineering 2018, Volume 4, Issue 5, Pages 661-666 doi: 10.1016/j.eng.2018.09.004

Abstract:

In ground-penetrating radar (GPR) imaging, it is common for the depth of investigation to be on the same order as the variability in surface topography. In such cases, migration fails when it is carried out from a datum after the application of elevation statics. We introduce a reverse-time migration (RTM) algorithm based on the second-order decoupled form of Maxwell’s equations, which requires computation of only the electric field. The wavefield extrapolation is computed directly from the acquisition surface without the need for datuming. In a synthetic case study, the algorithm significantly improves image accuracy over a processing sequence in which migration is performed after elevation statics. In addition, we acquired a field dataset at the Coral Pink Sand Dunes (CPSD) in Utah, USA. The data were acquired over rugged topography and have the complex internal stratigraphy of multiply eroded, modern, and ancient eolian deposits. The RTM algorithm significantly improves radar depth images in this challenging environment.

Keywords： Ground-penetrating radar Reverse-time migration Sand dune Amplitude analysis