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首页> 外文期刊>Scientia Africana: An International Journal of Pure & Applied Sciences >PALEOENVIRONMENTAL AND PALEODEPOSITIONAL ARCHITECTURE OF SAMO FIELD IN NIGER-DELTA BASIN OF NIGERIA USING SEISMIC ANDWELL LOG DATA
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PALEOENVIRONMENTAL AND PALEODEPOSITIONAL ARCHITECTURE OF SAMO FIELD IN NIGER-DELTA BASIN OF NIGERIA USING SEISMIC ANDWELL LOG DATA

机译：尼日利亚尼日尔 - 戴尔塔盆地的萨摩田的古环境和古代作用结构使用地震和井数据数据

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The use of Seismic data and well log data within the context of sequence stratigraphy is a valuable tool for ihe recognition of ancient cycles and sequences because they reflect information on the different processes that deposit sediments in different palaeoenvironment. An integrated geophysical well log data and seismic data from our wells within the SAMO field have been utilized to delineate the upper Miocene-Pliocene depositional environment parts of the Niger-Delta Basin. Identification of the different lithologies and depositional environment present in the penetrated borehole was achieved using gamma ray log. This enables the establishment of different rock units in the well from the gamma ray log values and signatures. Three succession signatures which include; the bell, cylindrical and the funnel being more prominent were identified from the log motifs in the different sand bodies attenuated in the wells from the field. The mapped sequences generated Low stand System Tracts (LST) progradational, Trangressive System Tracts (TST) retrogradational and High stand System Tract (HST) aggradational packages. All these reflect the depositional systems that dominated the different phases as a result of base level changes. Furthermore, values quantified from the logs revealed that porosity and permeability are more prominent in places where sand bodies accumulated in the slope channel setting indicative of slope-fills and turbidity fans. This deep-sea channels and switch corfiplex fault system suggest good hydrocarbon bearing potential associated with the distal Niger-Delta province. Also a good quality reservoir was inferred from the sands of both LST and HST while the shale of the TST could serve as a good reservoir.
机译：在序列地层上的上下文中使用地震数据和良好的对数数据是对古代周期和序列的识别的宝贵工具，因为它们反映了有关在不同古环境中沉积沉积物的不同过程的信息。已经利用了来自萨摩田里的井中的整合地球物理井对数数据和地震数据来描述尼日尔 - 戴尔塔盆地的中新世上新世沉积环境部分。使用伽玛射线对数实现了穿透钻孔中存在的不同岩性和沉积环境的鉴定。这使从伽马射线对数和签名中建立了井中不同的岩石单元。三个继任签名包括：从田野中的井中衰减的不同沙子体中的对数图案中发现了钟形，圆柱形和漏斗更为突出的。映射的序列生成了低架系统区域（LST）前期，trangreseration trangressive系统区（TST）逆行和高架系统区域（HST）汇编包装。所有这些反映了由于基础水平变化而占主导地位的沉积系统。此外，从对数中量化的值表明，在斜坡通道设置中积累的沙子表明坡度填充和浊度风扇的地方，孔隙率和渗透率更为突出。这种深海通道和开关Corfiplex断层系统表明，良好的碳氢化合物轴承潜力与尼日尔远端省省相关。同样，从LST和HST的沙子中推断出高质量的水库，而TST页岩可以用作良好的水库。

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