01-Stepping up land acquisition with 428XL-denis mougenot.pdf

SteepingSteeping upup LandLand acquisitionacquisition with 428XL Denis MOUGENOT Chief Geophysicist Sercel EquipmentEquipment divisiondivision CGGV-Sinopec seminar, Beijing, November 2011 1 Challenges for domestic Exploration Main geophysical issues addressed by Sinopec ShengLi, NW South and corresppondingg to different expploration areas (p(plain,, desert foothills)) 1 Seismic acquisition with single sensors and high density pointpoint acquisitionacquisition withwith DigitalDigital SensorSensor UnitsUnits (DSU(DSU-428)428) NomadNomad-9090 2 Imaging and characterization of carbonate reservoirs 3 Geophysical exploration in low S/N areas of the desert Wide Azimuth Acquisition (WAZ) with high channel count 428XL 44 GeophysicalGeophysical explorationexploration inin thethe foothillsfoothills inin thethe NorthNorth-WestWest ofof ChinaChina 5 Identification of hidden traps in clastic rocks 6 Seismic exploration challenges in the complex foothill area in South China denserdenser acquisitionacquisition withwith 428428 UniteUnite cablelesscableless systemsystem 7 Seismic exploration challenges in the low S/N areas in South China 1)1) PointPoint acquisitionacquisition withwith DSUDSU NN-9090 Single DSU3 vs. a string of 18 geophones (Liaohe) Full rangge of Diggital Sensor Units • Digital Sensor Unit with different packaging for acquisition on seabed,, in TZ Land oppen terrain or difficult access areas • For Land, 350,000 DSU channel sold (10% total channels) • New 428 members introduced: DSU1 DSUGPS DSUGPS DSU3SA DSU1 DSU3 DSU3BV new DSU1 AQDSU DSU1DSU1 vs.vs. thethe geophonegeophone equivalentequivalen