关键词: 油藏, 流体连通性, 向量夹角法, 油样, 色谱指纹图谱, 相似度, 下限值

Abstract: Considering chromatographic fingerprint of oil as vector of hyperspace and reducing the noise threshold value of instrument can get more chromatographic peaks.The comparability of two chromatographic fingerprint maps of different oil samples was calculated using the vector angle method.The result indicates that the comparability (or mean value) obtained from several experiments is about 98% under the same condition for the same sample.This value can be regarded as the upper limit for comparability of reservoir continuity.The oils from different reservoirs were mixed proportionally,and the comparability between the mixed oil and the single oil was calculated.The values of comparability vary regularly with change of proportions and are lower than the comparability of oil samples from the same reservoir.The comparability of samples from the same reservoir can be taken as the lower limit of reservoir continuity.When the comparability is lower than the value of lower limit,the reservoir fluid is considered as discontinuity whereas the reservoir fluid is possibly continuous.

Key words: reservoir, fluid continuity, vector angle method, oil sample, chromatographic fingerprint, comparability, lower limit