利用X—CT研究大庆油田双重介质裂缝和砂岩孔隙度

采用Ｘ－ＣＴ图象分析技术以研究双重介质的砂岩裂缝和孔隙度，对于稳产开采石油是很有价值的。Ｘ－ＣＴ法测量双重介质也隙度的优越性在于利用图象分析技术可以分别给出裂缝和砂岩的孔隙度，它同移重方法和核孔隙计测量的数据对比，是一种精度高，直观，无损伤的实验技术，Ｘ－ＣＴ测量双重介质孔隙度可给出孔隙度的分布，这有利于了解和预测残余油的分布。

Measurement of Fracture and Porous Porosity in Double Medium of Daqing Oil Field by X CT Imaging Process

Double medium is a kind of fracture and porous medium which is very useful to oil industry to keep stable oil production and oil storage. In this paper shows the measurement of fracture and porous porosity in double medium in Daqing oil field by X CT(ICT) and its imaging process. The resolution of ICT increase from several hundreds micron to 20 micron by using microscopic imaging technique. Only the total porosity of double medium can be found by common method. By this method, the porosity of the fracture and porous medium can be measured one by one in the same core at the same time.The distribution of the porosity to predict the residual oil can also be detected by ICT.In the end of this paper, this method was compared with the weigh and helium porosity measurement method. X CT will be used widely the research to measure the porosity of double medium which is fast, accuracy, visual and non pollution to any other method.