油气田(藏)分布的概周期与可公度性

Probable cycles of oil/gas distribution and commensurability.

通过研究已进入石油勘探高成熟期的辽河坳陷的油气田平面分布数据，首次提出油气田分布具有可公度性。在辽河坳陷，新生界油气藏分布的概周期为６０，基岩油气藏分布的概周期为６３ 。由于油气田分布具有自相似的分形性质，所以对油气田（ 藏） 分布可以进行变尺度可公度性预测。在１９９６ 年预测的实例中，根据大民屯凹陷、西部凹陷至辽东湾海域方向已知油气田分布数据和从小洼油田、大洼油田至海外河油田的概周期平均值，预测的含油气区已被勘探证实；１９９８ 年初根据东部凹陷茨榆坨油田含油区块分布数据，预测正钻的茨１０４ 井会出油，后被证实。预测实例都被勘探证实，表明用可公度性预测方法来预测未知油气田分布是行之有效的。

With a study of the planar distribution of oil/gas fields in Liaohe depression, it is suggested for the first time that their distribution has a commensurability. Probable cycle of the distribution of Cenozoic oil/gas reservoirs is 60, and the distribution of basement oil/gas reservoirs is 63. Because the distribution of oil/gas reservoirs has a self similar fractal property, the distribution of oil/gas reservoirs can be predicted by means of variable scale commensurability. In the example of 1996 prediction, based on the average distribution data in Damingtun sag, along the direction from western sag to sea area in Liaodong bay, and that from Dawa oil field to Xiaowa oil field and Haiwaihe oil field predicted the oil/gas bearing regions have been proved. In 1998, oil block distribution data in Ciyutuo oil field in eastern sag were used to predict that Well Ci 104 would produce oil and this has been proved afterwards also. These examples show that prediction of the distribution of oil/gas reservoirs by commensurability is practical.