May 2nd-North Tech Brkfst: Revealing Overburden and Reservoir Complexity with High-Resolution FWI*
Sponsored by Anadarko and Lumina Reservoir, Inc.
Meeting Location:
Anadarko Petroleum
1201 Lake Robbins Drive
The Woodlands, TX 77380
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Speaker: Rongrong Lu, ExxonMobil Upstream Research
The use of acoustic FWI as a velocity model building tool has by now been well-documented in numerous publications. The vast majority of the published studies share two characteristics: (i) FWI is only using refracted arrivals and very low frequencies, typically less than 10 Hz; (ii) velocity models generated with FWI are only used to produce better migrations, but do not possess the resolution to be directly interpretable. We present here an FWI field data application, that differs from common practice in two substantial ways: (i) the input seismic data set is dominated by reflections, with no appreciable amounts of refracted energy; (ii) FWI products were generated with sufficient high-frequency bandwidth (40 Hz), to be directly interpretable. We found that FWI provided significant benefits for imaging and sub-surface interpretation. The FWI velocity model resolved the velocity complexity associated with shallow gas pockets, and enabled us to mitigate imaging distortions at the target intervals. In addition, FWI uncovered a scale of sub-surface information typically unavailable on standard migrated sections, in effect filling-in the low wavenumbers that correspond to frequencies below the traditional seismic bandwidth.
Speaker Biography: Rongrong Lu, ExxonMobil Upstream Research
Rongrong Lu received his B.S. in Electrical Engineering (1999) and M.S. in Acoustics (2002) from Nanjing University, China. He then joined the MIT Earth Resources Lab as Presidential Fellow working with Prof. Nafi Toksöz and received the Ph.D in Geophysics in 2008. After graduation, he joined ExxonMobil and worked in various positions in the Upstream Research Company and the Exploration Company. Since 2015, he has been holding a position as Seismology supervisor in the Seismic Acquisition and Imaging function. Rongrong has broad interest in practical geophysical solutions including seismic imaging, inversion, signal processing, etc. In his free time, he likes travel, reading, and photography.
Breakfast will be available starting at 7:00 AM
Technical Talk will start at 7:30
Event will end by 8:30
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