惠州凹陷流体动力场研究方法及应用

游婷婷; 庞雄奇; 李洪博; 袁武; 胡涛; 于飒; 施砍园; 蔡哲

doi:10.3969/j.issn.1006-6535.2023.02.012

特种油气藏 >

2023 , Vol. 30 >Issue 2: 86 - 94

DOI: https://doi.org/10.3969/j.issn.1006-6535.2023.02.012

地质勘探

惠州凹陷流体动力场研究方法及应用

游婷婷 ,
庞雄奇 ,
李洪博 ,
袁武 ,
胡涛 ,
于飒 ,
施砍园 ,
蔡哲

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1.中国石油大学(北京),北京 102249;
2.中国石油大学(北京)油气资源与探测国家重点实验室,北京 102249;
3.中海石油(中国)有限公司深圳分公司,广东深圳 518000;
4.中国石油辽河油田分公司,辽宁新民 110316

游婷婷(1996—),女,2020年毕业于东北石油大学资源勘查工程专业,现为中国石油大学(北京)地质资源与地质工程专业在读硕士研究生,主要从事油气藏形成与分布预测研究工作。

收稿日期: 2022-04-06

修回日期: 2022-12-31

网络出版日期: 2023-05-29

基金资助

国家科技重大专项“浅水区古近系油气成藏条件”之“浅水区古近系‘源-汇-聚’综合评价及大中型油气田勘探方向研究”(CCL2020SZPS0143)

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Research Methods and Applications of Hydrodynamic Field in Huizhou Sag

You Tingting ,
Pang Xiongqi ,
Li Hongbo ,
Yuan Wu ,
Hu Tao ,
Yu Sa ,
Shi Kanyuan ,
Cai Zhe

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1. China University of Petroleum (Beijing), Beijing 102249, China;
2. State Key Laboratory of Oil and Gas Resources and Exploration of China University of Petroleum (Beijing), Beijing 102249, China;
3. China National Offshore Oil (China) Co., Ltd., Shenzhen Company, Shenzhen, Guangdong 518000, China;
4. PetroChina Liaohe Oilfield Company, Xinmin, Liaoning 110316, China

Received date: 2022-04-06

Revised date: 2022-12-31

Online published: 2023-05-29

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摘要

惠州凹陷深层非常规致密油气藏分布规律不清、顶底界限不明,严重影响勘探开发进程,针对该问题,以测井、试油、高压压汞等资料为基础,综合采用储层物性统计分析和实例剖析法确定研究区浮力成藏下限,采用最小流动孔喉半径法和储层内外势差法确定油气成藏底限,对惠州凹陷自由流体动力场和局限流体动力场进行划分,明确非常规油气藏分布界限。研究结果表明:惠州凹陷浮力成藏下限为3 500～4 000 m,对应孔隙度为8.50%,渗透率为1.00 mD;油气成藏底限临界孔喉半径为0.032 5 μm,临界孔隙度为1.72%～2.00%,对应的深度底限为6 000～6 500 m。研究结果为惠州凹陷开拓新的油气勘探领域,寻找新的油气勘探目标和接替资源指明了方向。

关键词： 浮力成藏下限; 致密油气; 油气成藏底限; 流体动力场; 判别方法; 惠州凹陷

本文引用格式

游婷婷 , 庞雄奇 , 李洪博 , 袁武 , 胡涛 , 于飒 , 施砍园 , 蔡哲 . 惠州凹陷流体动力场研究方法及应用[J]. 特种油气藏, 2023 , 30(2) : 86 -94 . DOI: 10.3969/j.issn.1006-6535.2023.02.012

Abstract

To address the problem that the distribution law of unconventional tight oil and gas reservoirs in the Huizhou Sag is unclear and the top and bottom boundaries are unknown, which seriously affects the exploration and development process, based on the data of logging, oil production testing and high-pressure Hg injection, the lower limit of buoyant accumulation in the study area is determined by the combination of statistical analysis of reservoir properties and case study method, and the bottom limit of hydrocarbon accumulation is determined by the minimum flowing pore throat radius method and the potential difference method inside and outside the reservoir, and the free and restricted hydrodynamic fields in the Huizhou Sag are divided to find out the distribution boundaries of unconventional oil and gas reservoirs. The research results show that the lower limit of buoyant accumulation in Huizhou Sag is 3 500-4 000 m, the corresponding porosity is 8.50%, and the permeability is 1.00 mD; the critical pore throat radius of the bottom limit of hydrocarbon accumulation is 0.032 5 μm, the critical porosity is from 1.72% to 2.00%, and the corresponding depth bottom limit is 6 000 to 6 500 m. The research results point to the direction for opening up new oil and gas exploration areas in the Huizhou Sag and finding new oil and gas exploration targets and alternative resources.

Key words： lower limit of buoyant accumulation; dense oil and gas; bottom limit of hydrocarbon accumulation; hydrodynamic field; discrimination method; Huizhou Sag

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