CAJ | 학술논문

深层油气勘探对老油气区（田）扩大储量、稳定产量具有重要意义。以全球深层油气藏的最新资料为基础，系统统计分析了全球深层油气分布特征。在全球（不包括美国本土48州）349个含油气盆地中，87个盆地内发现了深层油气藏。全球深层油气储量的63.3％分布于碎屑岩储集层，35.0％储于碳酸盐岩，其余的1.7％储于岩浆岩和变质岩。构造圈闭富集了全球深层油气储量的73.7％，是深层油气最重要的圈闭类型。被动陆缘盆地和前陆盆地是深层油气最富集的盆地类型，其深层油气储量分别占全球总量的47.7％和46.4％。层系上，深层油气主要富集于5套储集层系：古近系（占全球总量的22.3％）、上古生界（22.2％）、白垩系（18.3％）、新近系（12.8％）和侏罗系（12.8％），深层油气的层系分布特征与中、浅层油气类似。岩盐导致的盐下沉积物的负热异常效应抑制了盆地深层烃源岩的热演化或液态烃向气态烃转化，因此含盐盆地深层油气勘探特别值得关注。建议深层油气勘探应立足于中、浅层已有重大油气发现的地区，特别是发育有一定规模盐岩的地区。
심층유기감탐대로유기구（전）확대저량、은정산량구유중요의의。이전구심층유기장적최신자료위기출，계통통계분석료전구심층유기분포특정。재전구（불포괄미국본토48주）349개함유기분지중，87개분지내발현료심층유기장。전구심층유기저량적63.3％분포우쇄설암저집층，35.0％저우탄산염암，기여적1.7％저우암장암화변질암。구조권폐부집료전구심층유기저량적73.7％，시심층유기최중요적권폐류형。피동륙연분지화전륙분지시심층유기최부집적분지류형，기심층유기저량분별점전구총량적47.7％화46.4％。층계상，심층유기주요부집우5투저집층계：고근계（점전구총량적22.3％）、상고생계（22.2％）、백성계（18.3％）、신근계（12.8％）화주라계（12.8％），심층유기적층계분포특정여중、천층유기유사。암염도치적염하침적물적부열이상효응억제료분지심층경원암적열연화혹액태경향기태경전화，인차함염분지심층유기감탐특별치득관주。건의심층유기감탐응립족우중、천층이유중대유기발현적지구，특별시발육유일정규모염암적지구。
Exploration for deep petroleum accumulations ( DPAs) is of great significance to reserve growth and production stabilization of established petroleum provinces (fields).With an update database for the worldwide DPAs ,this study at-tempts to document their distribution characteristics .Among the 349 petroliferous basins in the world ( excluding US Lower 48 States) ,87 basins have discovered DPAs .Clastic rocks and carbonates host 63.3% and 35.0% of the total proved plus probable(2P)deep petroleum reserves in the world ,respectively.The remaining 1.7%are in igneous and metamor-phic rocks .In terms of trap type ,73.7%of the total are entrapped in structural traps .Passive margin and foreland basins contain the bulk of the total 2 P deep petroleum reserves ,with the former accounting for 47.7%of the total and the latter 46.4%.Stratigraphically,the 2P deep petroleum reserves are largely stored in five reservoir intervals:the Paleogene(hos-ting 22.3%of the total),Upper Paleozoic(22.2%),Cretaceous(18.3%),Neogene(12.8%) and Jurassic(12.8%). Such a stratigraphic distribution is similar to that of shallow-intermediate reservoirs .As salts have a cooling effect for the subsalt sediments ,the maturation of sub-salt source rocks or the conversion of trapped oil to gas can be retarded or de-layed .Salt-bearing deep basins deserve special attention for deep petroleum exploration .This study suggests that deep pe-troleum exploration should target the play fairways where major discoveries have been made in the shallow -intermediate reservoirs,particularly those fairways with salts of certain scale .