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岩心分析项目设计的目的是得到关键的不确定性数据,例如毛管压力、相对渗透率、剩余油饱和度、自吸水平、润湿性、饱和指数n以及过压对孔隙度和渗透率的影响程度。另外,对已知的操作程序予以特别重视,如样品的清洗程度、松散胶结的方式以及选择岩样的偏好。样品的选择已经开始采纳最近形成的岩相分类方案,重视整个大油田岩相侧面的变化。严格的SCAL岩样筛选工作后,结合沉积学、岩相学及CT扫描结果,进行常规的岩心分析。采用不同手段和设备,确保高质量测量工作。保持灵活性也是必要的,以便将来进行与EOR相关的专门测量。描述的岩心分析项目强调了结构性方法对于计算不确定性的意义,以及岩心分析结果本身对于一个特大型成熟复杂裂缝碳酸盐岩油田的意义。
The purpose of the core analysis project design is to obtain key uncertainty data such as capillary pressure, relative permeability, residual oil saturation, self-priming level, wettability, saturation index n and the effect of overpressure on porosity and permeability degree. In addition, special attention is paid to known operating procedures, such as the degree of cleaning of the samples, the way of loose cementing, and the preference for rock samples of choice. Sample selection has begun to adopt the recently developed facies classification scheme, which emphasizes changes in facies facies across the large oil fields. After rigorous SCAL rock screening, combined with sedimentology, petrography and CT scan results, routine core analyzes were performed. Using different methods and equipment to ensure high-quality measurement. It is also necessary to maintain flexibility in order to conduct a specific EOR-related measurement in the future. The described core analysis project highlights the implications of structural methods for computational uncertainty and the significance of the core analysis itself for a very large mature and complex fractured carbonate oilfield.