Abstract: We have studied the space distribution of Ms>5.5 earthquakes in the North China plain and its adjacent regions and discovered that there exists a kind of empty-area without earthqakes besides the empty-area with earthquakes. The empty-area without earthquakes is surrounded by relatively large earthquakes wherein there were neither historic strong earthquakes and will nor occur large earthquakes in late hundreds of years, and its indicative is the underground oil and gas. After observing the space distribution of relatively large earthquakes in some of major deposition basins and their surroundings in China, we concluded that where earthquakes concentrate, there are not oil and gas wheras where oil and gas are reserved, strong earthquakes often occur.From the view of oil-born, oil-reserve and cap-rock of oil and gas, earthquakes: would destroy these conditions, i. e. oil and gas in a region will transport and escape away along faults due to frequent seismicity even where there is a fine cap-rock and deposited oil and gas, and on the contrary, a region with oil and gas should be a stable massif and no strong earthquake will occur there in late hundreds of years. Based on this idea, three non-earthquake regions have been distinguished in the North China plain, i. e., the Lower Liaohe the East Liaoning Gulf, the Bohai Gulf-Cangzhou-the Yellow River delta and Baxian-Gaoyang.We point out at the end of this paper that the current work is also of importance for evaluating and forecasting the prospect areas of oil and gas, and that Lianyungang and its adjacent sea area and the South China sea regions might be abundant in oil and gas.

Key words: Oil-gas, Earthquake, Law of oil-gas deposit, Empty-area without earthquake

摘要： 本文研究了我国一些主要沉积盆地的较强地震与石油天然气在空间上的分布关系,发现在油气储集的地区往往没有地震发生,而在地震发生的地区也往往没有油气储集。根据这一认识,我们可以把蕴藏油气的地区作为识别地壳稳定性的一种标志,无疑对地震危险区划是有意义的。同时,我们又把地震活动地区作为识别非含油气构造的一种标志,无疑对寻找地下油气资源也是有意义的。

关键词: 石油天然气, 地震, 油气储集规律, 无震空区