Abstract
In order to efficiently develop deep-water turbidite sandstone oilfields complicated by faults in the block OML130, west Africa, high-precision development seismic technologies have been systematically studied and applied for reservoir fine description and production monitoring. Based on 3D seismic acquisition of high-density streamer and wide azimuth ocean bottom node (OBN), and the application of well data constrain seismic processing technology, seven sets of 3D seismic data with high signal-to-noise ratio, high resolution, high fidelity and wide azimuth were obtained successively. In terms of seismic inversion and interpretation, under the guidance of turbidite sandstone geological model, key technologies such as high-resolution prestack seismic inversion, reservoir fine division and correlation, time lapse seismic reservoir monitoring were proposed for high-precision reservoir description, production monitoring and remaining oil distribution prediction. The statistical results show that the prediction accuracy of seismic inversion of main reservoir thickness reached 95%, the time lapse seismic reservoir monitoring technology was helpful for production measures optimization and adjustment well design. In the last 15 years, oilfield development plans of 86 development wells have been designed and implemented effectively in the study area.
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The project is supported by National Science and Technology Major Project (Number 2017ZX05032-04).
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Gao, Yf., Fan, Te., Wang, Zj., Zhang, Hl., Le, J., Cai, Wt. (2023). Application of Development Seismic Key Technologies in Deep-Water Turbidite Sandstone Oilfields—A Case Study of The Block OML130 in West Africa. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2022. IFEDC 2022. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-99-1964-2_159
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