应用地质锚链法预测油气田数量及资源量——以松辽盆地北部油气田为例

A Geoanchored Method to Predict the Numbers and Resource Extent of Oil and Gas Fields -an example from oil-gas fields in northern Songliao basin.

采用地质锚链法对松辽盆地北部未发现的油气田数量和资源量进行了预测,并与用分形方法预测的结果进行了比较。地质锚链法可作为预测油气田数量及其资源量的一种新的可行方法,尤其适合勘探程度高的盆地或区带。应用地质锚链法预测油气田数量和资源量之前必须进行成藏体系划分,只有成藏体系在地质上符合定义,该方法才有预测功能。由于地质锚链法在预测油气田数量及其资源量过程中强调油气藏发现的相对次序,与其它资源评价方法相比,该方法预测的结果应为最小值。

On the basis of geoanchored method,the prediction of the numbers and resource extent of undiscovered oil and gas fields in the north of Songliao basin are made and correlated with those by fractal method.The result shows that the numbers and accumulations of undiscovered oil and gas fields predicted with geoanchored method is apparent less than those predicted with fractal method,but geoanchored method is still a newly reliable way to predict the num-bers and resource extent of the oil and gas fields,especially has the good application result in highly explored basins and zones.The prerequisite to predict the numbers and resource extent of the oil and gas fields with geoanchored method is to make a classification of reservoir-formed system;the system is only suitable in geological definition,the geoanchored method is of function for prediction.Because the method emphasizes the discovered relative sequence of a reservoir in the process of predicting the numbers and accumulations of the oil and gas fields,compared with another resource as-sessment methods,the predicted result with geoanchored method should be minimum.