中国海洋大学学报（自然科学版）
中國海洋大學學報（自然科學版）
중국해양대학학보（자연과학판）
PERIODICAL OF OCEAN UNIVERSITY OF CHINA
2010年
4期
65-72
,共8页
高邮凹陷%黄珏地区%水退型扇三角洲%沉积模式
高郵凹陷%黃玨地區%水退型扇三角洲%沉積模式
고유요함%황각지구%수퇴형선삼각주%침적모식
Gaoyou depression%Huangjue area%dereliction fan delta%sendimentary model
黄珏地区戴二段发育了以砂砾岩扇体为主的沉积体系.本文在岩心观察和描述的基础上,结合测井等资料,对黄珏地区戴二段砂砾岩体的沉积特征进行了研究.结果表明黄珏地区戴二段沉积时期在同生断层的下降盘主要发育水退型扇三角洲沉积体系.扇三角洲前缘是该区水退扇三角洲砂体堆积的主体,可进一步划分为水下分流河道、席状砂和分流间湾等砂体微相.不同的相带储层物性差异明显,扇三角洲前缘水下分流河道砂体储集物性较好,为油气聚集有利相带.该区沉积体系的形成受构造特征、古地貌和物源区等性质的影响,古地貌特征是该区水退型扇三角洲形成的决定性因素.
黃玨地區戴二段髮育瞭以砂礫巖扇體為主的沉積體繫.本文在巖心觀察和描述的基礎上,結閤測井等資料,對黃玨地區戴二段砂礫巖體的沉積特徵進行瞭研究.結果錶明黃玨地區戴二段沉積時期在同生斷層的下降盤主要髮育水退型扇三角洲沉積體繫.扇三角洲前緣是該區水退扇三角洲砂體堆積的主體,可進一步劃分為水下分流河道、席狀砂和分流間灣等砂體微相.不同的相帶儲層物性差異明顯,扇三角洲前緣水下分流河道砂體儲集物性較好,為油氣聚集有利相帶.該區沉積體繫的形成受構造特徵、古地貌和物源區等性質的影響,古地貌特徵是該區水退型扇三角洲形成的決定性因素.
황각지구대이단발육료이사력암선체위주적침적체계.본문재암심관찰화묘술적기출상,결합측정등자료,대황각지구대이단사력암체적침적특정진행료연구.결과표명황각지구대이단침적시기재동생단층적하강반주요발육수퇴형선삼각주침적체계.선삼각주전연시해구수퇴선삼각주사체퇴적적주체,가진일보화분위수하분류하도、석상사화분류간만등사체미상.불동적상대저층물성차이명현,선삼각주전연수하분류하도사체저집물성교호,위유기취집유리상대.해구침적체계적형성수구조특정、고지모화물원구등성질적영향,고지모특정시해구수퇴형선삼각주형성적결정성인소.
The sand-conglomerate fans are the major depositional systems in the second member of Dainan Formation,Huangjue Area. On the base of cores observation and description,combined with the numerous data of well logging,sedimentary characteristics are studied in the first member of Dainan Formation,Huangjue Area. The results show that the dereliction fan delta is the major sedimentary system in the downdropped block of contemporaneous fault in huangjue area. Deltafront subfacie is the main depositional body,and it may be subdivided into underwater distributary channel,sheet sand and flood plain. The hydrocarbon distribution is controlled by sedimentary facies apparently. The variance of reservoir quality is obviously in underwater distributaries channels,and they are the favorable places for hydrocarbon accumulation. The structural feature,palaeogeomorphology and provenance controll the depositional system. The palaeogeomorphology is the crucial factor for the formation of dereliction fan delta.
