CAJ | 학술논문

根据流体包裹体的透射光和荧光镜下观察、包裹体均一温度及含油包裹体丰度(GOI)分析,对柴达木盆地北缘(柴北缘)地区南八仙、马北1号构造古近系、新近系油气储层样品中流体包裹体特征及油气成藏期进行了研究.柴北缘地区流体包裹体较为发育,存在盐水溶液包裹体和有机包裹体,主要分布在石英裂隙、次生加大边及胶结物中,但个体一般较小,主要为5～10 μm.含油包裹体丰度GOI值较低,绝大多数样品GOI值分布在2.0%-10.5%之间,约40%样品的GOI值超过5%.包裹体均一温度在不同油气储层样品中差异较大,说明这些包裹体可能是在不同时期形成的.依据包裹体均一温度的实测结果,结合沉积埋藏-热演化史的资料,认为柴北缘地区南八仙构造和马北1号构造均经历了两期油气充注成藏,前者油气充注时间为N_1-N_2~1沉积期、N_2~2-N_2~3沉积期,后者油气充注时间为N_1沉积期、N_1末-N_2沉积期.
근거류체포과체적투사광화형광경하관찰、포과체균일온도급함유포과체봉도(GOI)분석,대시체목분지북연(시북연)지구남팔선、마북1호구조고근계、신근계유기저층양품중류체포과체특정급유기성장기진행료연구.시북연지구류체포과체교위발육,존재염수용액포과체화유궤포과체,주요분포재석영렬극、차생가대변급효결물중,단개체일반교소,주요위5～10 μm.함유포과체봉도GOI치교저,절대다수양품GOI치분포재2.0%-10.5%지간,약40%양품적GOI치초과5%.포과체균일온도재불동유기저층양품중차이교대,설명저사포과체가능시재불동시기형성적.의거포과체균일온도적실측결과,결합침적매장-열연화사적자료,인위시북연지구남팔선구조화마북1호구조균경력료량기유기충주성장,전자유기충주시간위N_1-N_2~1침적기、N_2~2-N_2~3침적기,후자유기충주시간위N_1침적기、N_1말-N_2침적기.
Based on the fluid inclusion study(microscopy characteristics,homogenization temperatures and grains with oil inclusions),the pool-forming times of Nanbaxian and Mabei 1 oilfields,north Qaidam Basin,have been discussed in this paper.Fluid inclusions in northern Qaidam Basin are relatively abundant,including saline aqueous inclusion and organic inclusion.These inclusions are small(5-10μm),mainly distribute in quartz fractures.overgrowths and cementations.The abundances of grains with oil inclusions(GOI)are commonly low,mostly ranging between 2.0%-10.5%with about 40 percent samples over 5%.The homogenization temperatures of fluid inclusons in different samples are markedly vailable.which indicates that these inclusions formed in different periods.According to the measured homogenization temperatures of fluid inclusions and combined with burial evolution history,Nanbaxian and Mabei 1 oilfields experienced two pool-forming times,N_1-N_2~1 and N_2~2-N_2~3,and N1 and N_1 end-N_2,respectively.