Three-dimensional Seismic Survey in the DLB Prospect of the Bohai Bay Basin
Lu Banggan, Wen Yanjun, 1989. "Three-dimensional Seismic Survey in the DLB Prospect of the Bohai Bay Basin", An Overview of Exploration Geophysics in China — 1988, Zhao Jingxiang, Wang Yanjun, Fu Xuexin, Stanley H. Ward
Download citation file:
We present an example of a 3-D seismic survey in the DLB area of Bohai Bay Basin, giving a detailed introduction on acquisition, interpretation, and geological correlation. This three-dimensional (3-D) project was carried out after two-dimensional (2-D) seismic exploration was completed and six wells drilled with only one well successful. The resolution of 3-D data is obviously better than 2-D data, with higher signal-to-noise (S/N) ratio and clearer faults. On the basis of the structural map of the oil horizon from 3-D data, all the suggested new wells drilled in the lower Tertiary layers have produced oil. A new and hopeful evaluation on hydrocarbon potential has resulted. The DLB area is in production now and is becoming a developing oil field. Petroleum reserves have about doubled in size since the 3-D survey was undertaken. The cost of the 3-D seismic survey corresponds roughly to the cost of one exploration well.