FEM地层元素测井仪可靠性及应用效果评价

Reliability and Application Effects Evaluation of FEM Formation Element Logging Tool

柴达木盆地复杂碳酸盐岩、致密混积岩等储层并存,常规测井方法难以进行有效的储层评价。FEM地层元素测井可测量地层中常见元素,并提供较为准确的地层矿物成分和储层物性等参数。介绍了FEM地层元素测井仪特征及其数据处理方法,对其在不同条件下的稳定性和一致性进行了大量的测井及实验验证,认为该仪器可靠性较高。在实际应用中,有效地解决了英西地区复杂碳酸盐岩有效储层划分、有效孔隙度计算及储层分类的难点和扎哈泉地区致密油储层岩性、物性、源岩特性及可压裂性的问题。实践表明,FEM地层元素测井基本满足各类复杂储层评价的需求,但仍有一定的局限与不足。

Reservoirs such as complex carbonate rocks and dense mixed rocks in the Qaidam basin coexist,and conventional logging methods are difficult to conduct effective reservoir evaluation.FEM formation element logging can measure common elements in the formation,and provide more accurate parameters such as formation mineral composition and reservoir physical properties.The characteristics of FEM element logging tool and data processing method are introduced.A lot of logging and experimental verification are carried out for its stability and consistency under different conditions.It is considered that FEM tool has high reliability.In the practical application,it effectively solves the effective reservoir division of the complex carbonate rocks,the calculation of effective porosity and the difficulty of reservoir classification in Yingxi area,and the lithology,physical properties and source rock characteristics of Zhahaquan tight oil reservoirs.The results show that FEM formation element logging basically meets the needs of various complex reservoir evaluations,but there are still some limitations and shortcomings.