CAJ | 학술논문

南堡凹陷已发现的油气储量分布具不均衡性。平面上，石油主要分布在南堡1号、2号和高尚堡构造带，天然气主要分布在南堡1、2、5号构造带。纵向上，油气主要分布在源上组合，源内和源下组合的油气储量相对较少。依据油气成藏要素的综合分析，确定了南堡凹陷油气分布主控因素：（1）烃源岩控制了油气的分布范围，已发现的80％以上的油气藏分布在距排烃中心15 km以内；（2）有利的沉积相带控制了沉积砂体，进而控制了油气的分布层位，目前已发现的油气储量主要分布在三角洲、河流沉积体系内；（3）断裂一方面控制了圈闭的类型和空间展布，进而控制油气藏的规模和位置，另一方面，断层作为油气纵向运移的通道，控制了油气纵向运移距离，已发现的油气藏90％以上分布在断裂带附近。综合而言，南堡凹陷油气分布受烃源岩、沉积相和断裂的多重控制。
남보요함이발현적유기저량분포구불균형성。평면상，석유주요분포재남보1호、2호화고상보구조대，천연기주요분포재남보1、2、5호구조대。종향상，유기주요분포재원상조합，원내화원하조합적유기저량상대교소。의거유기성장요소적종합분석，학정료남보요함유기분포주공인소：（1）경원암공제료유기적분포범위，이발현적80％이상적유기장분포재거배경중심15 km이내；（2）유리적침적상대공제료침적사체，진이공제료유기적분포층위，목전이발현적유기저량주요분포재삼각주、하류침적체계내；（3）단렬일방면공제료권폐적류형화공간전포，진이공제유기장적규모화위치，령일방면，단층작위유기종향운이적통도，공제료유기종향운이거리，이발현적유기장90％이상분포재단렬대부근。종합이언，남보요함유기분포수경원암、침적상화단렬적다중공제。
The Nanpu sag is one of the most petroliferous sags in Bohaiwan basin,within which the hydrocar-bons are unevenly distributed.Horizontally,oil resources are mainly distributed in the Nanpu No.1 tectonic zone,followed by the No.2 tectonic zone,while gas resources are mainly distributed in the Nanpu No.1 ,No.2 and No.5 tectonic zone.In terms of land and offshore,oil and gas resources are mainly distributed in beach areas.Vertically,oil and gas resources are mainly distributed in above-source plays,and oil and gas resources in Member 1 of the Dongying Formation are the most,and relatively fewer in inside-source plays and below-source plays.According to comprehensive analysis on elements of hydrocarbon accumulation,oil and gas distri-bution in the Nanpu sag are mainly controlled by the following factors.Firstly,source rocks have controlled the distribution areas of hydrocarbon reservoirs.The study shows more than 80% of hydrocarbon reservoirs have located in the place which is within 15 kilometers from expulsion center.Secondly,the favorable sedimentary facies have controlled the sand distribution and reservoir properties,thus they have controlled the distribution of the lays of hydrocarbon reservoirs and their scales.Finally,faults are the most important factor controlling the hydrocarbon reservoirs' distribution.On the one hand,faults have controlled the trap types and their spatial dis-tribution,further,the size and location of hydrocarbon reservoirs.On the other hand,as channels for hydrocarbon's vertical migration,faults control their vertical migration distance.To sum up,the hydrocarbon distribution of the Nanpu sag is under the controlling effects of the combination of source rocks,sedimentary facies and faults.The deltas near the source rocks,channel sands and the fault zones interconnecting vertically are favorable exploration areas.