CAJ | 학술논문

以塔里木盆地寒武系为研究对象,通过对盆地西北缘柯坪塔格地区、东北缘库鲁克塔格地区及西南缘寒武系野外剖面详细观测及盆内TS1井,YQ6井等钻井岩心详细观察,根据各类测试分析成果,共识别出6种类型的层序界面,它们分别是:①古风化壳.②渣状层,③古喀斯特作用面,④超覆面,⑤岩性、岩相转换面,⑥最大海泛面.在各类层序界面特征详细研究基础上,将上述界面归结为4种成因类型,分别是:造山侵蚀层序不整合界面,隆升侵蚀层序不整合界面,海侵上超层序不整合界面和陆上暴露层序不整合界面.层序界面成因类型不仅反映了海平面升降速度与构造沉降的耦合关系,而且还反映这两者耦合作用之下形成的物质响应和它们两者之间的本质差别,以及形成这些差别的盆地性质及动力学机制.最后,根据层序界面特征及成因意义,详细论述了层序界面的研究意义,具体表现为:(1)反映盆地性质与演化;(2)控制储层的发育,包括控制岩溶储层和白云岩储层的发育;(3)控制油气的运移;层序界面与裂缝、断裂共同组成了沟通孔隙流体流动的输导系统.
이탑리목분지한무계위연구대상,통과대분지서북연가평탑격지구、동북연고로극탑격지구급서남연한무계야외부면상세관측급분내TS1정,YQ6정등찬정암심상세관찰,근거각류측시분석성과,공식별출6충류형적층서계면,타문분별시:①고풍화각.②사상층,③고객사특작용면,④초복면,⑤암성、암상전환면,⑥최대해범면.재각류층서계면특정상세연구기출상,장상술계면귀결위4충성인류형,분별시:조산침식층서불정합계면,륭승침식층서불정합계면,해침상초층서불정합계면화륙상폭로층서불정합계면.층서계면성인류형불부반영료해평면승강속도여구조침강적우합관계,이차환반영저량자우합작용지하형성적물질향응화타문량자지간적본질차별,이급형성저사차별적분지성질급동역학궤제.최후,근거층서계면특정급성인의의,상세논술료층서계면적연구의의,구체표현위:(1)반영분지성질여연화;(2)공제저층적발육,포괄공제암용저층화백운암저층적발육;(3)공제유기적운이;층서계면여렬봉、단렬공동조성료구통공극류체류동적수도계통.
Cambrian strata in Kepingtage and Kulukegetage areas of northwest and northeast Tarim and well as logging of TS1 and YQ6 in central basin,have been studied by outcrop investi-gation, geochemical and petrology tests. Six types of sequence boundary surfaces have been recognized:①weathering crust; ② paleosol;③ paleo-karst surface; ④onlap surface ;⑤surface of lithol-ogic and facies transition and ⑥ maximum flooding surface. These surfaces are categorized into four genetic types of unconformity related to orogeny, unconformity related to uplifting, trans-gressive onlap and exposure unconformity respectively. These genetic types reflect the interplay of sea level fluctuation and tectonic subsidence,and the resultant variations in sediment supply. Fi-nally,the significance of characteristics of the sequence boundary surface is analyzed in detail on following aspects:(1) basin configuration and evolution;(2) their controlling effects on reservoir development and (3) their controlling effects on the migration of oil and gas (specifically, se-quence boundary surfaces,fissures and fault formed a conduit system for the migration of oil and gas). This research provide basic and necessary information for further petroleum exploration in Cambrian strata in Tarim Basin.