CAJ | 학술논문

自北美Bakken组致密油成功开发以后，致密油资源已成为各国非常规油气资源勘探开发的热点领域，我国在鄂尔多斯盆地延长组致密油的勘探开发中取得了一定的突破。从地质背景、岩性特征、生油岩特征、储集条件等方面，将威利斯顿盆地Bakken组与鄂尔多斯盆地延长组长7段致密油的成藏机理和富集规律进行系统对比。对比结果显示：两者在构造背景、源储配置关系、生油岩特征、储集层特征等方面相似，不同之处在于延长组的泥页岩平均厚度大于Bakken组。鄂尔多斯盆地延长组长7段和威利斯顿盆地Bakken组致密油具有极其相似的成藏条件和富集规律，认为鄂尔多斯盆地延长组致密油具有较好的勘探前景。
자북미Bakken조치밀유성공개발이후，치밀유자원이성위각국비상규유기자원감탐개발적열점영역，아국재악이다사분지연장조치밀유적감탐개발중취득료일정적돌파。종지질배경、암성특정、생유암특정、저집조건등방면，장위리사돈분지Bakken조여악이다사분지연장조장7단치밀유적성장궤리화부집규률진행계통대비。대비결과현시：량자재구조배경、원저배치관계、생유암특정、저집층특정등방면상사，불동지처재우연장조적니혈암평균후도대우Bakken조。악이다사분지연장조장7단화위리사돈분지Bakken조치밀유구유겁기상사적성장조건화부집규률，인위악이다사분지연장조치밀유구유교호적감탐전경。
Since the tight oil of Bakken Formation in north America developed successfully in industry,the tight oil has become a hot spot in the exploration and development of unconventional oil and gas resources,and the Chang 7 Member of Yanchang Formation in Ordos Basin has already got a great breakthrough to some extent in this hot area.Based on geological background,lithofacies features,oil-generating conditions and reservoir characteristics,this paper compared the mechanism of petroleum accumulation and the rule of enrichment of the tight oil in Bakken Formation with that in the Chang 7 Member of Yanchang Formation.The results show that the two formations are quite similar in geological background,disposition of source and reservoir rock,charac-teristics of source rock and reservoir.The only difference is that the average thickness of the shale in Yanchang Formation is thicker than that in the Bakken Formation.The comparison results indicate that the Yanchang For-mation in Ordos Basin has a good exploration prospect.