古近系陡坡扇构造-岩性复合圈闭识别与储层刻画技术及应用

杨东升; 赵志刚; 徐建永; 刘志峰; 李楠

doi:10.3969/j.issn.1006-6535.2020.05.006

特种油气藏 >

2020 , Vol. 27 >Issue 5: 38 - 44

DOI: https://doi.org/10.3969/j.issn.1006-6535.2020.05.006

地质勘探

古近系陡坡扇构造-岩性复合圈闭识别与储层刻画技术及应用

杨东升 ,
赵志刚 ,
徐建永 ,
刘志峰 ,
李楠

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中海油研究总院有限责任公司,北京 100028

杨东升(1983—),男,高级工程师,2006年毕业于中国石油大学(北京)信息与计算科学专业,2009年毕业于该校地球探测与信息技术专业,获硕士学位,现从事海洋油气勘探研究工作。

收稿日期: 2020-01-16

修回日期: 2020-07-17

网络出版日期: 2022-02-18

基金资助

国家科技重大专项“中国近海富烃凹陷优选与有利勘探方向预测”(2016ZX05024-002)

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Technology and Application of Structural-Lithologic Trap Identification and Reservoir Characterization of Paleogene Steep Slope Fans

Yang Dongsheng ,
Zhao Zhigang ,
Xu Jianyong ,
Liu Zhifeng ,
Li Nan

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CNOOC Research Institute Co., Ltd, Beijing 100028, China

Received date: 2020-01-16

Revised date: 2020-07-17

Online published: 2022-02-18

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摘要

生油凹陷发育的陡坡扇,由于缺乏亮点型地震反射特征,目标评价过程中的圈闭识别和储层刻画难度较大。以珠江口盆地陆丰凹陷古近系陡坡扇陆丰1-X目标为例,运用古地貌分析、三维可视化、叠前弹性反演储层预测等多种地球物理解释技术,形成了生油凹陷古近系陡坡扇构造-岩性圈闭识别与储层刻画技术,有效识别和刻画了该沉积类型的圈闭和储层展布。研究成果表明,陆丰1-X文昌组文五段发育扇三角洲储层,文五段储层西侧朵叶扇体富集程度高于东侧朵叶扇体,且扇三角洲前缘是优质储层的有利发育部位。研究成果对生油凹陷陡坡扇型构造-岩性目标的综合评价具有借鉴意义。

关键词： 陆丰凹陷; 古近系; 陡坡扇; 构造-岩性圈闭; 圈闭落实; 储层刻画

本文引用格式

杨东升 , 赵志刚 , 徐建永 , 刘志峰 , 李楠 . 古近系陡坡扇构造-岩性复合圈闭识别与储层刻画技术及应用[J]. 特种油气藏, 2020 , 27(5) : 38 -44 . DOI: 10.3969/j.issn.1006-6535.2020.05.006

Abstract

Due to the lack of bright spot seismic reflection characteristics, it is difficult to identify traps and characterize reservoirs in the process of target evaluation for steep slope fans developed in oil generation sags. Taking LF 1-X target of Paleogene steep slope fan in the Lufeng sag of the Pearl River Mouth Basin as an example, by using various geophysical interpretation techniques such as paleogeomorphological analysis technology, three-dimensional visualization technology and prestack elastic inversion reservoir prediction technology, the technologies for identifying structure-lithologic target traps and characterizing reservoirs in Paleogene steep slope fans in the oil generation sags have been developed, which have effectively identified and characterized the trap and reservoir distribution of this sedimentary type. The research results show that fan delta reservoirs are well developed in the fifth Member of the Wenchang Formation (Wen 5 Member for short) in LF 1-X structure; the enrichment degree of lobes in the west side of the Wen 5 Member reservoir is higher than that of the east side; fan delta front is a favorable development site for high-quality reservoirs. The research results can be referred for the comprehensive evaluation of structural-lithologic targets in steep slope fans of oil generation sags.

Key words： Lufeng sag; Paleogene; steep slope fan; structural-lithologic trap; trap implementation; reservoir characterization

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