Although reservoir characterization has been carried out by many researchers on the sedimentary package of the Bengal basin hydrocarbon province, integration of petrophysical and seismic sequence-based reservoir evaluation is rarely taken into account. This paper focuses on the identification of gas zones, reserve estimation and identification of new prospects in Srikail gas field within the eastern fold belt of Bengal basin integrating four wireline logs and 2D seismic data. Our study finds seven hydrocarbon-bearing zones (A, B, C, D, E, F and G) within the measured depth between 2429.5 and 3501 m. Petrophysical properties of seven hydrocarbon-bearing zones indicate that they are good quality reservoir sands. The gas horizons were mapped on seismic sections which reveal that the NW–SE anticlinal structure is largely affected by channels in the crest and western flank. The channels are infilled by fine-grained sediments which act as cap rock on northern and western parts of the structure. Thus, the anticlinal structure and fine-grained sediments make a potential trap for hydrocarbon accumulation and laterally and vertically well-distributed sequence remnants are the main reservoir rocks in this area. Volumetric reserve estimation of these sands provided a total gas initially in place as 552 billion cubic feet. Moreover, all the four wells are drilled in the southern block of the structure, and since there is a structural continuity from south to the north, it is highly recommended to drill a well up to 3000 m depth in the northern block to test its hydrocarbon potentiality. Overall, the outcomes of this study contribute new insights for reservoir characterization and identification of new prospects in an efficient way.

尽管许多研究人员对孟加拉盆地油气区的沉积包进行了储层表征，但很少考虑将基于岩石物理和地震序列的储层评价相结合。本文结合4条电缆测井和二维地震资料，重点研究了孟加拉盆地东部褶皱带Srikail气田气层识别、储量估算和新远景识别。我们的研究在 2429.5 至 3501 m 之间的测量深度内发现了七个含油气区（A、B、C、D、E、F 和 G）。7个含烃带的岩石物性表明它们是优质储集砂。在地震剖面上绘制了气层，这表明 NW-SE 背斜结构在很大程度上受波峰和西翼通道的影响。通道被细粒沉积物填充，这些沉积物在结构的北部和西部充当盖岩。因此，背斜构造和细粒沉积物是油气成藏的潜在圈闭，横向和纵向分布良好的层序残余是该区主要的储集岩。这些砂岩的体积储量估计提供了最初为 5520 亿立方英尺的总天然气。而且，四口井全部钻在结构的南区，由于从南到北有结构连续性，强烈建议在北部区块钻一口深达 3000 米的井，以测试其油气潜力。总体而言，这项研究的结果以有效的方式为储层表征和新前景的识别提供了新的见解。