CAJ | 학술논문

通过岩芯宏观观察、显微镜下铸体薄片精细观察，讨论了三塘湖盆地卡拉岗组火山岩储层的岩性岩相特征、储集空间发育特征及成岩作用特征，分析了成岩作用类型与孔洞形成机制。结合火山岩岩石化学分析，并依据火山岩成岩变化特征和过程与火山岩储层储集空间形成的相互关系，将三塘湖盆地石炭系火山岩成岩作用归纳为9种类型、4个成岩期或阶段。冷凝结晶固结成岩作用期和埋藏-热液成岩作用期沸石类杏仁体和充填缝是风化壳储层形成的关键物质基础，早期和晚期表生成岩作用期在各类缝的沟通系统内易溶组分的强烈溶蚀作用是风化壳储层形成的关键作用，并由此形成喷发间期风化壳储层和区域构造抬升剥蚀风化壳储层两类风化壳储层。
통과암심굉관관찰、현미경하주체박편정세관찰，토론료삼당호분지잡랍강조화산암저층적암성암상특정、저집공간발육특정급성암작용특정，분석료성암작용류형여공동형성궤제。결합화산암암석화학분석，병의거화산암성암변화특정화과정여화산암저층저집공간형성적상호관계，장삼당호분지석탄계화산암성암작용귀납위9충류형、4개성암기혹계단。냉응결정고결성암작용기화매장-열액성암작용기비석류행인체화충전봉시풍화각저층형성적관건물질기출，조기화만기표생성암작용기재각류봉적구통계통내역용조분적강렬용식작용시풍화각저층형성적관건작용，병유차형성분발간기풍화각저층화구역구조태승박식풍화각저층량류풍화각저층。
Based on the macroscopic well core observation,fine thin section observation and the petrochemistry analysis,the diagenesis of carboniferous volcanic rock in Santanghu Basin are divided into 9 types and 4 diagenetic stages according to the alternation feature and interrelationship of the volcanic rocks reservoir pore space. The Zeolites almond and full filled slits in the stage of condense concretion diagenesis and burial-hydrothermal diagenetic stage provided the key material basis for the weathering crust reservoir. In the stage of early and late epidiagenesis,intense corrosion of lyotrope in connective slits provided the key action for the formation of the weathering crust reservoir. Then two kinds of weathering crust reservoir were formed:eruption interval weathering crust reservoir and areal structure uplift denude weathering crust reservoir.