[1]仇永峰.高邮凹陷深凹带中浅层盖层条件综合评价[J].复杂油气藏,2022,15(01):8-12.[doi:10.16181/j.cnki.fzyqc.2022.01.002]
 QIU Yongfeng.Comprehensive evaluation of medium-shallow caprocks conditions in deep depression zone of Gaoyou Sag[J].Complex Hydrocarbon Reservoirs,2022,15(01):8-12.[doi:10.16181/j.cnki.fzyqc.2022.01.002]
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高邮凹陷深凹带中浅层盖层条件综合评价()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
15卷
期数:
2022年01期
页码:
8-12
栏目:
油气勘探
出版日期:
2022-03-25

文章信息/Info

Title:
Comprehensive evaluation of medium-shallow caprocks conditions in deep depression zone of Gaoyou Sag
作者:
仇永峰
中国石化江苏油田分公司勘探开发研究院,江苏 扬州 225009
Author(s):
QIU Yongfeng
Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China
关键词:
盖层分布物性封闭综合评价中浅层高邮凹陷
Keywords:
caprock distributionphysical property closurecomprehensive evaluationmiddle and shallow layerGaoyou Sag
分类号:
TE132
DOI:
10.16181/j.cnki.fzyqc.2022.01.002
文献标志码:
A
摘要:
盖层是高邮凹陷中浅层油气成藏的主要控制因素之一,在统计研究区100多口已钻井泥岩数据的基础上,对中浅层盖层宏观分布和封闭特征开展了综合评价。研究表明,高邮深凹带中浅层发育戴一段一亚段和垛一段六亚段两套较好的区域盖层,具有平面分布相对稳定、单层泥岩厚度较大、泥岩含量高等特征;盖层封闭类型主要是物性封闭,其排替压力较高,封闭性好。根据盖层分级评价结果,认为两套盖层对油气分布控制作用明显,戴一段一亚段盖层条件好,覆盖范围大,戴一段油气藏基本分布在Ⅰ类盖层覆盖范围内;垛一段大部分油气藏为Ⅱ类盖层所覆盖。研究结果对高邮凹陷中浅层油气勘探具有指导意义。
Abstract:
Caprock is one of the main factors of hydrocarbon accumulation in Gaoyou sag’s middle and shallow layers. A comprehensive evaluation of the macro-distribution and sealing characteristics of the medium-shallow caprocks was carried out using data from more than 100 well-drilled mudstones in the study area. The results show that two sets of regional caprocks,E2d11 and E2s16,have developed in the middle and shallow layers of Gaoyou Deep Sag,with characteristics such as relatively stable planar distribution,large single-layer mudstone thickness,and high mudstone content;the type of layer sealing is primarily physical,with a high displacement pressure and good sealing performance.According to the classification and evaluation results of caprocks,it is believed that the two sets of caprocks have obvious control effects on oil and gas distribution,the E2d11 caprock has good conditions and a large coverage area,and the oil and gas reservoirs in the first member of the Dainan Formation are mainly distributed in the coverage of class I caprock; most of the oil and gas reservoirs in the Duoyi member are covered by type II caprock. The results of the study have significance for Gaoyou Sag’s medium and shallow oil and gas exploration.

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备注/Memo

备注/Memo:
收稿日期:2021-12-19;改回日期:2022-03-11。
作者简介:仇永峰(1982—),副研究员,现主要从事油气勘探工作。 E-mail:qiuyf.jsyt@sinopec.com。
基金项目:江苏石油勘探局科研项目“高邮凹陷上含油气系统成藏机理研究”(JD06001)。
更新日期/Last Update: 1900-01-01