none 10.1190/1.2980417 Society of Exploration Geophysicists Society of Exploration Geophysicists 186 34698507 5981 2025121113012074200 10.1190 2025-12-11T18:01:29Z 2008-11-05T18:02:35Z 14 Geophysics 1942-2156 0016-8033 11 2008 01 01 2008 73 6 Gang Yu 1KMS Technologies, Houston, Texas, U.S.A. E-mail: gang@kmstechnologies.com. Bruce Marion 2Z-Seis Corporation, Houston, Texas, U.S.A. E-mail: bmarion@z-seis.com; bbryans@z-seis.com; pcarrillo@z-seis.com. Brad Bryans 2Z-Seis Corporation, Houston, Texas, U.S.A. E-mail: bmarion@z-seis.com; bbryans@z-seis.com; pcarrillo@z-seis.com. Pedro Carrillo 2Z-Seis Corporation, Houston, Texas, U.S.A. E-mail: bmarion@z-seis.com; bbryans@z-seis.com; pcarrillo@z-seis.com. Guo Wankui 3Deceased. Pang Yanming 4Daqing Oilfield E & D Institute, P. R. China. E-mail: pangyanming@petrochina.com.cn; kongfzh@sina.com. Kong Fanzhong 4Daqing Oilfield E & D Institute, P. R. China. E-mail: pangyanming@petrochina.com.cn; kongfzh@sina.com. Abstract A gas discovery in the Shengping area of the Daqing Oilfield in China was made recently in a large-scale volcanic depositional environment. Because gas in the heterogeneities of formations broken by tectonic activity and localized volcanic eruptions is not common, researchers sought a more detailed reservoir characterization before developing the field. Crosswell seismic data were used to augment existing 3D surface seismic, log, and core data. This provided data at five times the resolution of the surface seismic data to bridge the gap in resolution between surface seismic and well data. Crosswell seismic data were acquired in two wells, 832m apart, and processed to provide images of reflectivity, velocity, and formation properties from sections produced by amplitude-versus-angle (AVA) inversion. The state of the art in crosswell seismic is summarized briefly, reviewing progress in data acquisition and data processing over several decades of crosswell technology development. A detailed description of the data acquisition and data processing applied to the data from the Shengping area is also given. An integrated interpretation of the crosswell images with the surface seismic and log data was used to produce a more detailed geologic model. The enhanced geologic model is being used to plan strategic development of the reservoir and to evaluate possible infill well locations. 11 2008 01 01 2008 11 05 2008 B117 B126 10.1190/1.2980417 https://pubs.geoscienceworld.org/geophysics/article/73/6/B117/251379/Crosswell-seismic-imaging-for-deep-gas-reservoir https://pubs.geoscienceworld.org/seg/geophysics/article-pdf/73/6/B117/3211954/gsgpy_73_6_B117.pdf https://pubs.geoscienceworld.org/seg/geophysics/article-pdf/73/6/B117/3211954/gsgpy_73_6_B117.pdf http://geophysics.geoscienceworld.org/cgi/doi/10.1190/1.2980417 First Break Antonelli 22 49 2004 10.3997/1365-2397.22.5.25900 Integrated crosswell seismic: Case histories in advanced technologies to improve reservoir description West Texas Geological Society Fall Symposium Bryans 255 2004 Monitoring of SACROC CO2 flood utilizing crosswell tomography and reflection imaging 69th Annual International Meeting Bube 1295 1999 On a continuation approach for regularization for crosswell tomography 71st Annual International Meeting Byun 1 2001 Two-step migration approach for crosswell seismic reflection data 77th Annual International Meeting Carrillo 1252 2007 Attenuation coefficient tomogram and Q distribution image from crosswell survey in the Northern Reef Trend of Michigan Basin 76th Annual International Meeting D'Agosto 1 2006 Enhanced crosswell acquisition efficiency with combined upgoing and downgoing imaging 70th Annual EAGE Annual Conference and Exhibition D'Agosto 9 2008 Integrated crosswell seismic inversion — Test on Belayim land data Geophysics Harris 60 667 1995 10.1190/1.1443806 High resolution imaging of a west Texas carbonate reservoir: Part 1 — Project summary and interpretation 70th Annual International Meeting Jervis 1631 2000 High resolution crosswell reflection imaging in the presence of anisotropy — The Santa Rosa gas field, Eastern Venezuela The Leading Edge Li 22 454 2003 10.1190/1.1579579 Coiled tubing deployment makes crosswell seismic surveying successful in horizontal wells The Leading Edge Lines 12 13 1993 10.1190/1.1436907 Integrated interpretation of borehole and crosswell data from a west Texas field 72nd Annual International Meeting Washbourne 874 2002 Crosswell reflection tomography Geophysics Washbourne 67 853 2002 10.1190/1.1484529 Crosswell traveltime tomography in three dimensions