松辽盆地嫩江组泥质三角洲沉积特征及沉积机理

北京大学学报（自然科学版）

松辽盆地嫩江组泥质三角洲沉积特征及沉积机理

王陆新^1,2,吴朝东¹,莫午零^1,3,张顺⁴

1. 北京大学石油与天然气研究中心, 北京 100871; 2. 国土资源部油气资源战略研究中心, 北京 100812; 3. 中国石油勘探开发研究院廊坊分院, 廊坊 065007; 4. 大庆油田有限责任公司勘探开发研究院, 大庆 163712;

收稿日期:2013-05-02 出版日期:2014-05-20 发布日期:2014-05-20

Sedimentary Characteristics and Identification of Muddy Deltaic in Nenjiang Formation of Songliao Basin

WANG Luxin^1,2, WU Chaodong¹, MO Wuling^1,3, ZHANG Shun⁴

1. The Key Laboratory of Orogenic Belts and Crustal Evolution MOE, Peking University, Beijing 100871; 2. Strategic Research Center of Oil and Gas Resources, Ministry of Land and Resources, Bijing 100812; 3. Research Institute of Petroleum Exploration and Development-Langfang, PetroChina, Langfang 065007; 4. Exploration and Development Research Institute of Daqing Oilfield Co. Ltd, PetroChina, Daqing 163712;

Received:2013-05-02 Online:2014-05-20 Published:2014-05-20

摘要/Abstract

摘要： 通过对松辽盆地嫩江组岩芯资料、测井资料和地震资料处理和解释, 发现在松辽盆地大庆长垣地区嫩江组二、三段湖相泥岩层段中, 具有一定角度自东向西的前积结构, 地震剖面中底部同相轴表现为中强振幅、高连续反射、叠瓦状特征; 每个层序可分辨出4~6个主要由泥岩构成的前积层, 有的顶积层存在顶超现象, 延续性相对较差; 岩性组合中泥质组分含量高, 砂质组分含量低。经研究认为, 这种具有一定角度前积结构的富泥贫砂沉积是高悬浮载荷河流入湖而形成的泥质三角洲沉积。建立了嫩江组湖泊沉积环境中发育的泥质三角洲的沉积模式。

关键词: 大庆长垣, 泥质三角洲, 沉积模式, 嫩江组, 地震相

Abstract: The Member 2, 3 of Nenjiang Formation in Songliao Basin was studied based on core, log and seismic data. The lineups in seismic profile have the feature of low angle extension, continuous reflection and imbricates distribution, and have low angle progradation structure from east to west. Each sequence can distinguish 4?6 foreset beds, top laminated subject to certain erosion, and the continuity is relatively poor in muddy delta segment. Compared with sedimentary characteristics of the classic delta-mode, the muddy delta has low content of sandy-component than normal delta. The results show that the argillaceous sediment with a low-angle foreset structure has muddy deltaic deposition characteristics, which comes from highly suspension load deposit near the end of subaqueous channel system. The muddy deltaic depositional model of the Member 2, 3 of Nenjiang Formation was built.

Key words: Daqing Changyuan, muddy delta, depositional model, Nenjiang Formation, seismic facies

中图分类号:

P512

王陆新,吴朝东,莫午零,张顺. 松辽盆地嫩江组泥质三角洲沉积特征及沉积机理[J]. 北京大学学报（自然科学版）.

WANG Luxin,WU Chaodong,MO Wuling,ZHANG Shun. Sedimentary Characteristics and Identification of Muddy Deltaic in Nenjiang Formation of Songliao Basin[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

[1]	柳琼瑶,吴朝东,胡天跃,莫午零,张顺,刘化清,苏明军. 松辽盆地茂兴地区滑塌扇地震属性识别与沉积学分析[J]. 北京大学学报（自然科学版）, 2014, 50(3): 487-496.
[2]	彭国亮,吴朝东,张顺,陈阳. 松辽盆地北部上白垩统嫩江组二、三段物源分析[J]. 北京大学学报（自然科学版）, 2010, 46(4): 555-562.