CAJ | 학술논문

通过对准噶尔盆地乌尔禾地区二叠系风城组白云岩储集层的成因及分布规律研究,发现其分布主要受有利沉积相带控制,在扇三角洲发育处白云岩的发育明显受到抑制,扇三角洲前缘扇体之间的湖湾区成为白云岩分布的主要区域.白云岩主要为陆源物质供给较少的静水、微成浅湖环境下沉积的灰泥质沉积物在成岩过程中随Mg~(2+)含量变化而导致强烈白云岩化而形成的.
통과대준갈이분지오이화지구이첩계풍성조백운암저집층적성인급분포규률연구,발현기분포주요수유리침적상대공제,재선삼각주발육처백운암적발육명현수도억제,선삼각주전연선체지간적호만구성위백운암분포적주요구역.백운암주요위륙원물질공급교소적정수、미성천호배경하침적적회니질침적물재성암과정중수Mg~(2+)함량변화이도치강렬백운암화이형성적.
This paper analyzes the origin and distribution of dolomite reservoir of Permian Fengcheng formation in Wuerhe area in Junggar basin,and proposes that the distribution of dolomite reservior is controlled by sedimentary facies.The occurrence of dolomite in fan delta is obviously restricted,and its main distribution area is the lake-bay area among the front fans of the fan delta.The dolomite is generally formed in environment of slightly salty shallow lake with still water,where the terrigenous mud sediments are changed by strong dolomitization with varied Mg~(2+) content during their diagenetic process.