准噶尔盆地莫索湾凸起八道湾组低饱和度油藏成因分析

杨朝洪; 司马立强; 王亮; 王刚

doi:10.3969/j.issn.1006-6535.2022.05.006

特种油气藏 >

2022 , Vol. 29 >Issue 5: 42 - 48

DOI: https://doi.org/10.3969/j.issn.1006-6535.2022.05.006

地质勘探

准噶尔盆地莫索湾凸起八道湾组低饱和度油藏成因分析

杨朝洪 ,
司马立强 ,
王亮 ,
王刚

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1.西南石油大学,四川成都 610500;
2.油气藏地质及开发工程国家重点实验室,四川成都 610500;
3.成都理工大学,四川成都 610059;
4.中国石油新疆油田分公司,新疆克拉玛依 834000

杨朝洪(1997—),男,2020年毕业于绵阳师范学院自然地理与资源环境专业,现为西南石油大学地质资源与地质工程专业在读硕士研究生,研究方向为气测井方法、解释及地质应用。

收稿日期: 2022-01-30

修回日期: 2022-07-24

网络出版日期: 2023-01-10

基金资助

国家科技重大专项“四川盆地大型碳酸盐岩气田开发示范工程”(2016ZX05052);国家自然科学基金“热液作用下的深部含铀油蚀变砂岩地球物理响应及铀油兼探方法”(U2003102)

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Genesis Analysis of Low Saturation Oil Reservoirs in Badaowan Formation of Mosuowan Bulge in Junggar Basin

Yang Chaohong ,
Sima Liqiang ,
Wang Liang ,
Wang Gang

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1. Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu, Sichuan 610500, China;
3. Chengdu University of Technology, Chengdu, Sichuan 610059, China;
4. PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China

Received date: 2022-01-30

Revised date: 2022-07-24

Online published: 2023-01-10

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摘要

针对准噶尔盆地莫索湾凸起八道湾组油藏前期成因研究缺乏储层物性、隔夹层对含油饱和度低的影响,从孔隙结构、储层物性及非均质隔夹层等方面开展了油藏低饱和度成因分析,剖析了构造幅度对油水分异、储层物性对油水同产区厚度、隔夹层对含油饱和度的影响。结果表明:①孔隙结构差造成储层油水分异不明显、油水置换不完全是八道湾组油藏含油饱和度低的主要原因;②储层低孔隙度与渗透率的物性特征导致油水同产厚度较大是八道湾组油藏含油饱和度低的次要原因;③由于八道湾组并没有形成区域性的、连续的隔夹层,因此,隔夹层对八道湾组油藏含油饱和度低的影响较小。研究结果将为八道湾组的高效开发提供依据,加快探勘开发进程。

关键词： 孔隙结构差; 低饱和度油藏; 八道湾组; 准噶尔盆地

本文引用格式

杨朝洪 , 司马立强 , 王亮 , 王刚 . 准噶尔盆地莫索湾凸起八道湾组低饱和度油藏成因分析[J]. 特种油气藏, 2022 , 29(5) : 42 -48 . DOI: 10.3969/j.issn.1006-6535.2022.05.006

Abstract

In view of the lack of reservoir physical properties and the influence of barriers and interlayers on low oil saturation in the previous studies of the genesis of the Badaowan Formation reservoir in the Mosuowan Bulge, Junggar Basin, the analysis of reservoir low-saturation genesis was carried out from the aspects of pore structure, reservoir physical properties and heterogeneous barriers and interlayers, and the influences of structural amplitude on oil-water variation, reservoir physical properties on thickness of oil-water co-producing area, and barriers and interlayer on oil saturation were analyzed. The result shows: (1) The lack of obvious oil-water variation and incomplete oil-water replacement in the reservoir due to poor pore structure are the main reasons for the low oil saturation of the Badaowan Formation reservoir; (2) The relatively large oil-water co-production thickness caused by the physical properties of low porosity and permeability of the reservoir is the secondary reason for the low oil saturation of the Badaowan Formation reservoir; (3) Since the Badaowan Formation does not form regional and continuous barriers and interlayers, the barriers and interlayers have little effect on the low oil saturation of the Badaowan Formation reservoir. The research results will provide a basis for the efficient development of the Badaowan Formation and accelerate the exploration and development process.

Key words： poor pore structure; low saturation reservoir; Badaowan Formation; Junggar Basin

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