none 10.1190/1.3496913 Society of Exploration Geophysicists Society of Exploration Geophysicists 186 44916276 5980 2025120814125953300 10.1190 2025-12-08T19:13:04Z 2010-10-07T19:42:38Z 15 The Leading Edge 1070-485X 10 2010 10 01 2010 10 07 2010 29 10 Tim Jenkinson ExxonMobil Upstream Research Company 1 Rishi Bansal ExxonMobil Upstream Research Company 1 Alex Martinez ExxonMobil Upstream Research Company 1 Mike Matheney ExxonMobil Upstream Research Company 1 Vijay Khare ExxonMobil Upstream Research Company 1 Vincent Cornaglia 2 Esso E & P Norge Eleven years ago, publication of the UK North Sea Alba Field OBC converted-wave (PS) image examples by MacLeod et al. caused quite a stir. The authors provided convincing evidence that “the Alba survey is the first 3D OBC survey in which successful converted-wave imaging of the reservoir has created significant economic benefit.” Most of us with an interest in multicomponent seismology know it well, as Alba has become one of the classic examples of a “stealth” reservoir (Rape et al., 2005), having low P- but high S-impedance contrast. The Alba reservoir and others like it are difficult to recognize on conventional P-wave images, but they stand out quite nicely when viewed on their PS equivalents. 10 2010 10 01 2010 10 07 2010 1228 1239 10.1190/1.3496913 https://pubs.geoscienceworld.org/tle/article/29/10/1228/135834/Joint-PP-PS-angle-stack-analysis-and-AVA-inversion https://pubs.geoscienceworld.org/seg/tle/article-pdf/29/10/1228/7430536/1.3496913.pdf https://pubs.geoscienceworld.org/seg/tle/article-pdf/29/10/1228/7430536/1.3496913.pdf https://pubs.geoscienceworld.org/tle/article/29/10/1228/135834/joint-pp-ps-angle-stack-analysis-and-ava-inversion http://tle.geoscienceworld.org/cgi/doi/10.1190/1.3496913 The Leading Edge Bansal 28 10 1182 2009 10.1190/1.3249772 Correction for NMO-stretch and differential attenuation in converted-wave data: A key enabling technology for pre-stack joint inversion of PP and PS data 10.4043/18236-MS Fjellanger, J. P., F.Boen, K. J.Ronning, A.Sabo and A. N.Haaland, 2006, Seismic mapping and monitoring for well optimization: 2006 Offshore Technology Conference, paper 18236. 10.1190/1.1818052 Fomel, S. and M. M.Backus, 2003, Multicomponent seismic data registration by least squares: 73rd Annual International Meeting, SEG, Expanded Abstracts, 781–784. 10.1190/1.3255068 Khare, V., R.Bansal, and A.Martinez, 2009, AVA attributes in joint PP/PS analysis: 79th Annual International Meeting, SEG, Expanded Abstracts, 1202–1206. 10.1190/1.1851212 Lazaratos, S. and C.Finn, 2004, Deterministic spectral balancing for high-fidelity AVO: 74th Annual International Meeting, SEG, Expanded Abstracts, 219–223. The Leading Edge MacLeod 18 9 1306 1999 10.1190/1.1438206 The Alba Field ocean-bottom cable seismic survey: Impact on development Rape 2005 10.3997/2214-4609-pdb.17.A21 Forseti—“stealth” imaging with 4C OBC seismic 10.1190/1.3255692 Tura, A., S.Dobbs, K.Davies, O.Hermann, and J.Zhang, 2009, Remaining oil thickness and well positioning using 4D at Alba Field, North Sea, 79th Annual International Meeting, SEG, Expanded Abstracts, 3944–3948.