Direct hydrocarbon indicator (DHI) expressions observed on seismic could arise due to various geological conditions. Such expression could lead to misinterpretation as hydrocarbon presence if not properly analyzed. This study employs rock physics attributes analysis to evaluate an identified prospect in the undrilled area of the studied reservoir. Prospect identification was actualized by analyzing structural and amplitude maps of the reservoir, which revealed a possible roll over anticline at both the exploited and prospective zone, with a very good amplitude support that conforms to structure. Well-based cross-plot analysis adopted four cross-plot techniques for feasibility study to test the applicability of rock physics for prospect evaluation in the field; Lambda-Rho versus Lambda-Rho/Mu-Rho ratio; Mu-Rho versus Lambda-Rho; and Poisson Ratio versus P-impedance. The result presented Poisson ratio, Lambda-Rho and Lambda/Mu-Rho ratio as good fluid indicator and Mu-Rho as a viable lithology indicator. As such, they were selected for seismic-based attribute and cross-plot analysis to validate the identified prospect. The results from seismic-based analysis showed consistency in the expression of the analyzed attribute at both the exploited and prospective zone. The seismic-based cross-plot analysis result was similar to the well-based analysis and was able to confirm that the observed amplitude expression in the exploited zone is an indication of hydrocarbon-bearing sand.

在地震中观察到的直接烃指示剂（DHI）表达式可能是由于各种地质条件引起的。如果不正确分析，这种表达可能会导致误解为碳氢化合物的存在。这项研究采用岩石物理属性分析来评估研究储层未钻探区域中的已确定前景。通过分析储层的结构图和振幅图可以实现对前兆的识别，该图揭示了在已开发区和预期区都可能发生背斜，并且具有与构造相符的很好的振幅支持。基于井的交叉图分析采用了四种交叉图技术进行可行性研究，以检验岩石物理学在现场前景评估中的适用性；Lambda-Rho与Lambda-Rho / Mu-Rho之比；Mu-Rho和Lambda-Rho；泊松比与P阻抗的关系。结果表明泊松比，Lambda-Rho和Lambda / Mu-Rho比是良好的流体指标，而Mu-Rho是可行的岩性指标。因此，他们被选择用于基于地震的属性和交叉图分析，以验证所识别的前景。基于地震的分析结果表明，在已开发区和预期区的被分析属性表达都是一致的。基于地震的交会图分析结果与基于井的分析结果相似，并且能够确认在开采区中观察到的振幅表达是含烃砂的指示。他们被选择用于基于地震的属性和交会图分析，以验证确定的前景。基于地震的分析结果表明，在已开发区和预期区的被分析属性表达都是一致的。基于地震的交会图分析结果与基于井的分析结果相似，并且能够确认在开采区中观察到的振幅表达是含烃砂的指示。他们被选择用于基于地震的属性和交会图分析，以验证确定的前景。基于地震的分析结果表明，在已开发区和预期区的被分析属性表达都是一致的。基于地震的交会图分析结果与基于井的分析结果相似，并且能够确认在开采区中观察到的振幅表达是含烃砂岩的指示。