Abstract：The southern Laopu area is transitional zone of Jidong Oilfield and offshore block,the precious data are always the 3-D seismic data, being unable to finish structural interpretation in that area. The recent 3-D seismic acquisition is in the west of the region in 2000 by AGIP Company.There exist following difficulties according to legacy data and field investigation:①fracture development;②multiple development in igneous rock of Ng FormaLion;③rapid water depth variation. This 3-D seismic exploration is carried out in view of these problems,effectively solved the above-mentioned problems. The adopted measures are as follows:①using OBC for PATCH wide-azimuth acquisition;② appropriate sources being chosen in different areas;③using first break of OBt; for second posiboning;④reasonably using 3-D recoverable shot points. The aim of the paper lies in summarizing the experiences of the exploration and improves the knowledge of OBC exploration technique at the same time.
