琼东南盆地崖城13-1低凸起崖城组勘探突破与启示

doi:10.3969/j.issn.1006-6535.2025.04.004

特种油气藏 ›› 2025, Vol. 32 ›› Issue (4): 33-40.DOI: 10.3969/j.issn.1006-6535.2025.04.004

琼东南盆地崖城13-1低凸起崖城组勘探突破与启示

任丽娟¹, 何小胡¹, 张亚震¹, 谢超¹, 王立锋¹, 蔡全升²

1.中海石油(中国)有限公司海南分公司,海南海口 570100;
2.长江大学地球科学学院,湖北武汉 430100

收稿日期:2024-08-27 修回日期:2025-05-25 出版日期:2025-08-25 发布日期:2025-09-03
通讯作者: 何小胡(1982—),男,高级工程师,2006年毕业于中国石油大学(北京)矿产普查与勘探专业,2009年毕业于该校矿产普查与勘探专业,获硕士学位,现从事油气勘探研究工作。
作者简介:任丽娟(1987—),女,工程师,2011年毕业于河北地质大学地球信息科学与技术专业,2015年毕业于中国石油大学(华东)地质资源与地质工程专业,获硕士学位,现从事油气勘探研究工作。
基金资助:
“十四五”重大科技项目“复杂边缘海盆地深层、超深层油气成藏条件与成藏机制研究——莺琼盆地”(KJGG2022-0404)

Exploration breakthrough and enlightenment of the Yacheng Formation in the Yacheng 13-1 Low Uplift, Qiongdongnan Basin

REN Lijuan¹, HE Xiaohu¹, ZHANG Yazhen¹, XIE Chao¹, WANG Lifeng¹, CAI Quansheng²

1. China National Offshore Oil (China) Co., Ltd., Hainan Company, Haikou, Hainan 570100, China;
2. School of Geosciences, Yangtze University, Wuhan, Hubei 430100, China

Received:2024-08-27 Revised:2025-05-25 Online:2025-08-25 Published:2025-09-03

摘要/Abstract

摘要： 近年来,崖城13-1气田崖城组天然气勘探取得了重大突破,为进一步总结崖城组成藏地质认识,推动气田扩边增储,基于新钻井、地震以及分析测试资料,对崖城13-1气田崖城组成藏地质条件进行了系统分析。结果表明:崖城13-1气田崖城组储层主要为辫状河三角洲河道砂砾岩,砂体发育规模大、物性好,构造顶部被梅山组泥岩覆盖,侧翼上倾方向被泥岩隔层分割,具有良好的储盖组合,是典型的构造-地层圈闭。由于圈闭位于崖城组构造高部位,受到崖南凹陷及莺歌海盆地烃源岩的双重供烃作用,油气运聚成藏条件优越。YC13-10-C井崖城组天然气的突破也证实了崖城13-1气田地层具有差异富集、立体成藏的特点。因此,围绕已有的含气构造或者气藏区,自高部位向低部位开展构造-地层圈闭立体勘探研究将是该区乃至类似气藏下一步天然气滚动勘探的重要方向。该认识对崖城13-1气田的下步勘探具有一定指导意义。

关键词: 勘探突破, 崖城组, 构造-地层圈闭, 崖城13-1气田, 琼东南盆地

Abstract: In recent years, significant breakthroughs have been made in natural gas exploration of the Yacheng Formation in the Yacheng 13-1 Gasfield. To further summarize geological understanding of Yacheng Formation accumulation and promote field expansion and reserve growth, based on new drilling, seismic, and analytical test data, the geological conditions for accumulation in the Yacheng Formation of the Yacheng 13-1 Gasfield were systematically analyzed. The results indicate that the Yacheng Formation reservoirs in the Yacheng 13-1 Gasfield are mainly braided river delta channel sandstones and conglomerates, with large-scale sand body development and good physical properties. The structural top is covered by Meishan Formation mudstone, and the updip direction of the flank is segmented by mudstone barriers, forming a good reservoir-seal combination, representing a typical structural-stratigraphic trap. Since the trap is located at the structural high of the Yacheng Formation, it benefits from dual hydrocarbon supply from source rocks in the Yanan Sag and the Yinggehai Basin, providing excellent conditions for hydrocarbon migration and accumulation. The breakthrough of Yacheng Formation natural gas in Well YC13-10-C also confirms the characteristics of differential enrichment and three-dimensional accumulation of the Yacheng Formation in the Yacheng 13-1 Gasfield. Therefore, around existing gas-bearing structures or gas reservoirs, conducting three-dimensional exploration research on structural-stratigraphic traps from high to low positions will be an important direction for the next step of rolling natural gas exploration within this area and similar gas reservoirs. This understanding has certain guiding significance for the next step of exploration in the Yacheng 13-1 Gasfield.

Key words: exploration breakthrough, Yacheng Formation, structural-stratigraphic trap, Yacheng 13-1 Gasfield, Qiongdongnan Basin

中图分类号:

TE122.1

任丽娟, 何小胡, 张亚震, 谢超, 王立锋, 蔡全升. 琼东南盆地崖城13-1低凸起崖城组勘探突破与启示[J]. 特种油气藏, 2025, 32(4): 33-40.

REN Lijuan, HE Xiaohu, ZHANG Yazhen, XIE Chao, WANG Lifeng, CAI Quansheng. Exploration breakthrough and enlightenment of the Yacheng Formation in the Yacheng 13-1 Low Uplift, Qiongdongnan Basin[J]. Special Oil & Gas Reservoirs, 2025, 32(4): 33-40.

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琼东南盆地崖城13-1低凸起崖城组勘探突破与启示

Exploration breakthrough and enlightenment of the Yacheng Formation in the Yacheng 13-1 Low Uplift, Qiongdongnan Basin

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