CAJ | 학술논문

在油气近源富集的大背景下,仍有部分油气在远离烃源区被发现.对于这部分油气藏如何进行合理的解释?其与烃源区内油气成藏条件和主控因素有何不同?本文根据油藏(圈闭)-烃源的空间配置和成藏联系,将其分为源内、源边和源外三种类型.与源内相比,源外有其独特的地质条件和成藏机制.源外成藏虽较源内苛刻,但在一定的条件仍然可以局部富集形成大油气田.以准噶尔盆地西缘车排子凸起春光油田为实例进行典型解剖,提出生烃凹陷丰富的烃源、高效的输导体系和良好的时空配置关系是其得以源外成藏的主要控制因素.源外地区作为一个新的勘探领域,具备很大的拓展潜力和空间.在油气勘探中,应注意源外成藏的可能性,并采取针对性的以输导条件为核心的研究思路开展源外地区的油气勘探评价.
재유기근원부집적대배경하,잉유부분유기재원리경원구피발현.대우저부분유기장여하진행합리적해석?기여경원구내유기성장조건화주공인소유하불동?본문근거유장(권폐)-경원적공간배치화성장련계,장기분위원내、원변화원외삼충류형.여원내상비,원외유기독특적지질조건화성장궤제.원외성장수교원내가각,단재일정적조건잉연가이국부부집형성대유기전.이준갈이분지서연차배자철기춘광유전위실례진행전형해부,제출생경요함봉부적경원、고효적수도체계화량호적시공배치관계시기득이원외성장적주요공제인소.원외지구작위일개신적감탐영역,구비흔대적탁전잠력화공간.재유기감탐중,응주의원외성장적가능성,병채취침대성적이수도조건위핵심적연구사로개전원외지구적유기감탐평개.
In the most of cases,oil concentrated in the area near oil source, but a part of oil was discovered in the area far away from oil source.How to interpret these reservoirs?What's the difference between these two kind reservoirs in forming characters and key control factors? According to the space collocation and the forming relationship between reservoir (trap) and oil source, the paper classify three different reservoirs distribution types, they are within oil source , in the side of the oil source and outside oil source . Compared to the area within oil source, the area outside oil source had its unique geological conditions and reservoir-forming mechanism. Although the reservoir-forming condition in area outside oil source was more harshly than in area within oil source, but the area outside oil source could be forming hydrocarbon accumulation in special conditions. The paper researched the geological condition and reservoir-forming mechanism in area outside oil source by taking the Chunguang Oilfield of Chepaizi Uplift in west Junggar Basin as an example. It discovered that the key element of reservoir-forming outside oil source is abundant oil source sag, favorable cross migration system and profitable matching conditions. As a new prospect territory, the area outside oil source has well prospect potential and space. In the oil and gas exploration, we should pay attention to the possibility of reservoir-forming in area outside oil source,and evaluate potential exploration capacity by taking migration conduction as the key research thought.