阜新盆地天然气成藏与分布特征

THE NATURAL GAS FORMATION AND DISTRIBUTING CHARACTERISTIC OF FUXIN BASIN

阜新盆地有较好的气源岩,天然气资源丰富。指出:经过多次构造运动,盆地内形成了多种圈闭和复杂的断裂构造,直接控制着盆内源岩及油气的分布层位和部位;油气运移以横向为主,在早期及晚期断裂活动停止时,断裂不再是油气纵向运移通道;油气藏分为原生油气藏和次生油气藏,以热成因气为主,保存条件取决于后期构造运动的改造程度;天然气的扩散作用对气藏影响小,几乎没有破坏作用;艾友、东梁西及刘家—王营区辉绿岩体附近应是今后天然气勘探方向。

Fuxin basin has abundance natural gas and good gas source rock. By several structure movement, it form much traps and complexity fracture structure, directly control distributing layer and position of gas source rock and oil gas. Oil-gas movement is landscape orientation in this district, when rupture activity cease, it is not portrait movement channel of oil-gas. In this district oil-gas pools have primary, secondary oil-gas pools, with thermogenic gas is central, the preserve condition depend on evening alteration degree of formation structure. Diffuse action of natural gas has litter effect to gas conceal, hardly has destroy function. Aiyou-the west of Dongliang and near to dolerite of Liujia- Wangying should be consider as exploration aspect in future.