苏伊士湾中新统蒸发岩储层特征及有利区预测

doi:10.3969/j.issn.1006-6535.2021.04.010

特种油气藏 ›› 2021, Vol. 28 ›› Issue (4): 72-78.DOI: 10.3969/j.issn.1006-6535.2021.04.010

苏伊士湾中新统蒸发岩储层特征及有利区预测

田雨^1,2, 瞿建华², 何巍², 张艺久², 曹丽娜^1,2, 邓勇², 钱利², 李辰²

1.振华石油控股有限公司,北京 100031;
2.成都北方石油勘探开发技术有限公司,四川成都 610000

收稿日期:2020-05-21 修回日期:2021-04-02 发布日期:2022-02-18
通讯作者: 瞿建华(1981—),男,教授级高级工程师,2004年毕业于长江大学地理信息系统专业,2007年毕业于该校矿产普查与勘探专业,获硕士学位,现从事石油地质综合研究工作。
作者简介:田雨(1985—),男,高级工程师,2007年毕业于长江大学勘查技术与工程专业,2013年毕业于中国矿业大学(北京)矿产普查与勘探专业,获博士学位,现从事油气地质研究工作。
基金资助:
中国博士后科学基金资助项目“基于核磁共振研究砂岩储层石油充注微观过程及成藏底限”(2018M641420)

Characteristics of Miocene Evaporite Reservoir in Gulf of Suez and Prospective Zone Prediction

Tian Yu^1,2, Qu Jianhua², He Wei², Zhang Yijiu², Cao Lina^1,2, Deng Yong², Qian Li², Li Chen²

1. China ZhenHua Oil Co., Ltd., Beijing 100031, China;
2. Chengdu North Petroleum Exploration and Development Technology Co., Ltd., Chengdu, Sichuan 610000, China

Received:2020-05-21 Revised:2021-04-02 Published:2022-02-18

摘要/Abstract

摘要： 苏伊士湾中新统蒸发岩广泛发育,部分钻井在蒸发岩层系测试获得工业油流,展示出良好的油气勘探开发前景。为了厘清蒸发岩层系储层特征及展布规律,以埃及North West Gemsa区块中新统South Gharib组为例,利用岩心、铸体薄片、压汞实验、物性分析及测井资料等,对SG组岩性及储层特征进行研究。结果表明:SG组岩石类型多样,以盐岩为主,夹硬石膏、杂卤石、光卤石及白云岩等;储集空间主要为晶间孔,样品压汞曲线形态及孔喉半径分布显示出细歪度、微细喉等特征,渗流条件较差;白云岩及叶片状硬石膏物性条件相对较好,为研究区重要的储层发育岩石类型,其余蒸发岩类物性整体较差,一般不能作为储层;有利储层分布区主要位于区块西部,为SG组下步勘探重点区域。该研究成果对苏伊士湾地区中新统蒸发岩层系的油气勘探开发具有重要指导意义。

关键词: 蒸发岩, 储层特征, 储层预测, 中新统, 苏伊士湾

Abstract: Miocene evaporite is widely developed in the Gulf of Suez. Industrial oil run has been found in some wells in the test of evaporite formations, indicating bright prospects for oil and gas exploration and development. In order to clarify the reservoir characteristics and distribution law of evaporite formations, in a case study of Miocene South Gharib Formation (referred to as the SG Formation) in the North West Gemsa block (referred to as the NWG block) in Egypt, the lithology and reservoir characteristics of the SG Formation were studied according to core, cast slice, mercury injection test, physical property analysis and logging data. The results showed that the SG Formation was composed of various rock, mainly salt rock, mixed with anhydrite, polyhalite, carnallite and dolomite; the reservoir space was mainly inter-granular pores; the mercury injection curve shape and the pore throat radius distribution presented fine skewness, micro throat, and other characteristics, with poor seepage; dolomite and foliated anhydrite were in relatively good physical properties, which were important rock types for reservoir development in the study area; the other evaporites were generally poor in physical properties and could not be used as reservoirs; the distribution area of favorable reservoirs was mainly located in the west of the block and was the key area for next exploration of the SG Formation. The study results play a guiding role in the oil and gas exploration and development of Miocene evaporite formations in the Gulf of Suez.

Key words: evaporite, reservoir characteristics, reservoir prediction, Miocene, Gulf of Suez

中图分类号:

TE122.2

田雨, 瞿建华, 何巍, 张艺久, 曹丽娜, 邓勇, 钱利, 李辰. 苏伊士湾中新统蒸发岩储层特征及有利区预测[J]. 特种油气藏, 2021, 28(4): 72-78.

Tian Yu, Qu Jianhua, He Wei, Zhang Yijiu, Cao Lina, Deng Yong, Qian Li, Li Chen. Characteristics of Miocene Evaporite Reservoir in Gulf of Suez and Prospective Zone Prediction[J]. Special Oil & Gas Reservoirs, 2021, 28(4): 72-78.

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苏伊士湾中新统蒸发岩储层特征及有利区预测

Characteristics of Miocene Evaporite Reservoir in Gulf of Suez and Prospective Zone Prediction

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