CAJ | 학술논문

中国的火山岩油气勘探近年来进展非常快,并不断在许多盆地发现了优质火山岩储层,其中风化壳型储层作为非常重要的火山岩储集体类型而倍受重视.三塘湖盆地马朗凹陷石炭系风化壳型储层储集空间以溶蚀孔洞缝为主,储层物性非常好.通过火山岩油气勘探中的野外露头观察、钻井取心、镜下薄片鉴定,及主量元素、微量元素等分析化验资料,并结合火山岩岩石学特征和物性特点,初步建立了该区的风化壳储层的发育模式,将火山岩风化壳储层在垂向上自上而下划分为五个带:①最终分解产物带;②水解带;③淋滤带;④崩解带;⑤未风化带(母岩).淋滤带储集物性最好,该区风化淋滤是改善储层的关键.
중국적화산암유기감탐근년래진전비상쾌,병불단재허다분지발현료우질화산암저층,기중풍화각형저층작위비상중요적화산암저집체류형이배수중시.삼당호분지마랑요함석탄계풍화각형저층저집공간이용식공동봉위주,저층물성비상호.통과화산암유기감탐중적야외로두관찰、찬정취심、경하박편감정,급주량원소、미량원소등분석화험자료,병결합화산암암석학특정화물성특점,초보건립료해구적풍화각저층적발육모식,장화산암풍화각저층재수향상자상이하화분위오개대:①최종분해산물대;②수해대;③림려대;④붕해대;⑤미풍화대(모암).림려대저집물성최호,해구풍화림려시개선저층적관건.
In recent years, the volcanic oil and gas exploration in China has made great progress and lots of high quality volcanic reservoirs have been found in many basins. As one of the most important volcanic reservoirs, the weathered crust reservoir has attracted much attention. Pore space of the Carboniferous weathered crust in Malang depression of Santanghu Basin includes mainly dissolved pores, fractures and caverns. The development pattern of weathered crust reservoir was preliminarily established based on the study upon the outcrops, cores, thin sections and analytical data on major and trace elements, as well as the petrological characteristics and physical property of the volcanic rocks, the volcanic weathered crust reservoir contains five belts vertically: ①Non-weathefing zone (mother rock); ② Disintegration belt;③ Eluvial horizon; ④ Hydrolytic belt; ⑤ The final decomposition product belt. The eluvial horizon reservoir is the b6st, in which the weathering eluviation is the key to reservoir development.