The cost of drilling exploration and production wells is high and the price of crude oil in the capital market is fluctuating, therefore, there is the need to mitigate the risk of improper investigation of time/age-dependent reservoir rocks continuity within a field. Sequence stratigraphic analysis was carried out in OSP field with the aim of identifying and correlating hydrocarbon reservoirs that are deposited contemporaneously. Key stratigraphic surfaces (maximum flooding surfaces and sequence boundaries) were interpreted from biostratigraphic, well log and seismic data. Biostratigraphic interpretation subdivide the study area into three floral subzones—P780, P820 and P830. Three maximum flooding surfaces dated 10.4 Ma, 9.5 Ma and 7.4 Ma and four sequence boundaries dated 10.6 Ma, 10.35 Ma, 8.5 Ma and 6.7 Ma were identified. Three depositional sequences (sequences 1–3) were identified from the integration of the biostratigraphic, well log and seismic data. The identified key stratigraphic surfaces and depositional sequences were employed in the delineation and correlation of the hydrocarbon reservoirs which were found to fall within the highstand and lowstand systems tracts. Sequence stratigraphic correlation technique aided the local arrangement and geometries of reservoirs within the field and in locating potential reservoirs.

中文翻译：

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层序地层学在增强油气藏相关性中的应用“ OSP”油田尼日利亚尼日尔三角洲

钻探勘探和生产井的成本很高，并且资本市场中的原油价格波动，因此，有必要减轻在田间研究不正确的时间/年龄相关储层岩石连续性的风险。在OSP中进行了层序地层分析目的是识别和关联同时沉积的油气藏。从生物地层，测井和地震数据解释了关键的地层表面（最大淹没面和层序边界）。生物地层学解释将研究区域划分为三个花卉分区：P780，P820和P830。确定了三个最大的淹没面，分别为10.4 Ma，9.5 Ma和7.4 Ma，以及四个序列边界，分别为10.6 Ma，10.35 Ma，8.5 Ma和6.7 Ma。通过生物地层，测井和地震数据的整合，确定了三个沉积层序（1-3段）。识别出的关键地层表面和沉积层序被用来描述和确定烃类储集层的分布和相关性，这些油气藏属于高，低位体系。层序地层相关技术辅助了田间储层的局部布置和几何形状以及潜在储层的定位。