Abstract: In order to effectively represent the distribution features of geologic data, it is necessary to allocate asmaller value of weight for dense clustering data, while allocate a bigger value of weight for sparse clustering data. This-paper recommends a method, the Cell Declustering method, which has been suggested by C. Deutsch, to decrease the clustering effect of geologic data, and gives an example for its application in Xinjang oilfield.

Key words: geologic data, effct, Xinjiang, oilfield, clustering