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油气藏类型分析是勘探开发阶段的基础工作与重要环节,油气藏类型划分的科学性与实用性原则要求能有效地指导油气的勘探和开发工作。由于油气勘探和开发之间具有阶段性和紧密联系性,因此,油气藏类型的划分也体现阶段性和联系性。油气藏不同的勘探开发阶段具有不同的研究重点,如勘探阶段的沉积特征、储集特征、圈闭成因和成藏特征等,开发阶段的储层参数、流体物性、渗流特征和温压特征等,这些研究与描述的重要因素就是不同阶段油气藏类型划分的主要依据之一。因而提出阶段性多因素综合分类法,即需要结合特定的油气藏勘探开发阶段,采取相应的依据进行油气藏分类,才能科学有效地指导勘探开发实践。以三塘湖盆地为例,对油气藏进行了阶段性多因素综合分类,并讨论分类结果在油气勘探开发实际阶段中的意义,说明阶段性多因素综合分类法的有效性。
Reservoir type analysis is the basic work and an important step in the exploration and development stage. The scientific and practical principles for the classification of reservoir types can effectively guide the exploration and development of oil and gas. Due to the stage and close connection between oil and gas exploration and development, the classification of reservoir types also reflects the stage and connection. Different exploration and development stages of oil and gas reservoirs have different research focuses, such as sedimentary characteristics, reservoir characteristics, trap formation and reservoir forming characteristics during the exploration stage, reservoir parameters, fluid properties, seepage characteristics and temperature and pressure characteristics in the development stage The important factor of these researches and descriptions is one of the main bases for the classification of reservoir types in different stages. Therefore, the multi-factor comprehensive classification method is put forward. That is, we need to combine the specific exploration and development stages of oil and gas reservoirs and adopt the corresponding basis for reservoir classification in order to guide the exploration and development practice scientifically and effectively. Taking Santanghu Basin as an example, the authors conducted a multi-period comprehensive classification of oil and gas reservoirs and discussed the significance of the classification results in the actual stage of oil and gas exploration and development, and illustrated the effectiveness of the phased multi-factor comprehensive classification.