琼东南盆地深水区富气凹陷形成控制因素与勘探实践——以陵水凹陷为例

doi:10.7623/syxb2013S2010

石油学报 ›› 2013, Vol. 34 ›› Issue (增刊二): 83-90.DOI: 10.7623/syxb2013S2010

琼东南盆地深水区富气凹陷形成控制因素与勘探实践——以陵水凹陷为例

沈怀磊¹, 张功成¹, 孙志鹏², 何玉平¹, 杨东升¹, 张义娜¹

1. 中海油研究总院北京 100027;
2. 中海石油(中国)有限公司湛江分公司湛江 524000

收稿日期:2013-08-07 修回日期:2013-11-08 出版日期:2013-12-25 发布日期:2014-01-15
通讯作者: 沈怀磊，男，1980年6月生，2004年获中国石油大学（北京）学士学位，2007年获中国石油大学（北京）硕士学位，现为中海油研究总院勘探研究院工程师，主要从事地球物理解释与研究工作。Email：shenhl@cnooc.com.cn
作者简介:沈怀磊，男，1980年6月生，2004年获中国石油大学（北京）学士学位，2007年获中国石油大学（北京）硕士学位，现为中海油研究总院勘探研究院工程师，主要从事地球物理解释与研究工作。Email：shenhl@cnooc.com.cn
基金资助:
国家重点基础研究发展计划（973）项目“南海深水盆地油气资源形成与分布基础性研究”（2009CB219400）；国家重大科技专项“海洋深水区油气勘探关键技术”（2008ZX05025、2011ZX05025）；国土资源部全国油气资源战略选区调查与评价项目“南海北部陆坡深水海域油气资源战略调查及评价”（XQ-2004-05）及“南海北部深水区天然气资源战略调查及评价项目”（XQ-2007-05）资助。

Formation control factor analysis and exploration practice in gas-rich sag in deep-water areas of Qiongdongnan Basin：a case study of Lingshui sag

SHEN Huailei¹, ZHANG Gongcheng¹, SUN Zhipeng², HE Yuping¹, YANG Dongsheng¹, ZHANG Yina¹

1. CNOOC Research Institute, Beijing 100027, China;
2. Zhanjiang Branch of CNOOC China Limited., Zhanjiang 524000, China

Received:2013-08-07 Revised:2013-11-08 Online:2013-12-25 Published:2014-01-15

摘要/Abstract

摘要：

琼东南盆地深水区陵水凹陷下渐新统崖城组广泛发育潮坪—潟湖沉积体系，其煤系地层在高地温场背景下广泛生气，是主力烃源岩；中新统莺歌海组—黄流组沉积期琼东南盆地发育中央峡谷水道，横穿陵水凹陷，水道砂体是有利的油气聚集场所，水道砂体周围被广泛发育的半深海—深海相泥岩覆盖，封盖条件优越；热流体成因的底辟带为崖城组煤系地层烃源岩生成的油气运移到莺歌海组—黄流组水道砂体中提供了有效通道。上述因素共同控制了陵水凹陷成为琼东南盆地深水区潜在富气凹陷，勘探发现了陵水1-1气田，显示出良好的资源潜力和勘探前景。

关键词: 深水区, 陵水凹陷, 煤系地层, 中央峡谷水道, 底辟带, 富气凹陷

Abstract:

In the western deep-water area of Qiongdongnan Basin, northern South China Sea, a tidal flat-lagoon sedimentary system was developed widely in the early Oligocene Yacheng Formation of Lingshui sag, where coal measure strata generated gases extensively in high-temperature geothermal fields and served as the major hydrocarbon source rocks. During the depositional period of Miocene Yinggehai-Huangliu Formation, the central canyon was developed across Lingshui sag, providing river-course sand bodies that are favorable spaces for oil and gas accumulation; the periphery of these sand bodies were covered by hemipelagic-abyssal mudstone, showing advantageous sealing and capping conditions. Thermal fluid-related diapirs provided an effective pathway for the migration of oil and gas generated by coal measure strata of the Yacheng Formation to sand bodies of the Yinggehai-Huangliu Formation. Under the joint actions of the above factors, Lingshui sag has evolved into a potential gas-rich sag in the deep-water area of Qiongdongnan Basin. The discovery of Lingshui 1-1 gas field in Lingshui sag demonstrates the source potential and exploration prospects of the sag.

Key words: deep-water area, Lingshui sag, coal measure strata, the central canyon, diapirs, gas-rich sag

中图分类号:

TE111

沈怀磊, 张功成, 孙志鹏, 何玉平, 杨东升, 张义娜. 琼东南盆地深水区富气凹陷形成控制因素与勘探实践——以陵水凹陷为例[J]. 石油学报, 2013, 34(增刊二): 83-90.

SHEN Huailei, ZHANG Gongcheng, SUN Zhipeng, HE Yuping, YANG Dongsheng, ZHANG Yina. Formation control factor analysis and exploration practice in gas-rich sag in deep-water areas of Qiongdongnan Basin：a case study of Lingshui sag[J]. ACTA PETROLEI SINICA, 2013, 34(增刊二): 83-90.

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琼东南盆地深水区富气凹陷形成控制因素与勘探实践——以陵水凹陷为例

Formation control factor analysis and exploration practice in gas-rich sag in deep-water areas of Qiongdongnan Basin：a case study of Lingshui sag

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