准噶尔盆地吉木萨尔凹陷芦草沟组页岩油藏特征与形成主控因素

霍进; 支东明; 郑孟林; 唐勇; 王霞田; 常秋生; 郭旭光; 丁靖; 何文军; 鲍海娟; 高阳

doi:10.11781/sysydz202004506

准噶尔盆地吉木萨尔凹陷芦草沟组页岩油藏特征与形成主控因素

doi: 10.11781/sysydz202004506

1.
中国石油新疆油田分公司, 新疆克拉玛依 834000
2.
中国石油新疆油田分公司勘探开发研究院, 新疆克拉玛依 834000

基金项目:

国家科技重大专项“新疆北部深层区域构造格架、沉积演化与有利区带评价” 2017ZX05008006-003-001

详细信息

作者简介:
霍进(1967-), 男, 教授级高级工程师, 从事油气田开发研究工作。E-mail: hj_zy@petrochina.com.cn

中图分类号: TE122.11
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- 被引次数: 0
出版历程
- 收稿日期: 2020-03-12
- 修回日期: 2020-06-05
- 刊出日期: 2020-07-28

Characteristics and main controls of shale oil reservoirs in Lucaogou Formation, Jimsar Sag, Junggar Basin

1.
Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
2.
Research Institute of Petroleum Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China

摘要

摘要: 准噶尔盆地吉木萨尔凹陷二叠系芦草沟组发育典型的陆相咸化湖盆页岩油，综合利用地震、岩心、测井等资料，对油藏特征及形成主控因素进行了研究。芦草沟组大面积含油，以游离态和吸附态2种状态在多层“甜点”层的微—纳米孔喉、层理缝中聚集，被页岩隔层分隔，存在上、下2个“甜点”富集层段。页岩油藏地层压力、成熟度从凹陷区向斜坡区逐渐降低，原油密度逐渐增大。烃源岩品质及成熟度控制了页岩油的分布与原油性质，沉积微相控制了页岩油的分布层位，页岩的岩性与物性控制了页岩油的富集甜点，生烃增压是页岩油成藏的主要动力。
- 页岩油 /
- 油藏特征 /
- 咸化湖盆 /
- 芦草沟组 /
- 吉木萨尔凹陷 /
- 准噶尔盆地
Abstract: The characteristics and main controls of continental shale oil reservoirs in the Permian Lucaogou Formation in the Jimsar Sag of Junggar Basin were studied based on seismic, core and logging data. Oil was found in a large area in the Lucaogou Formation, mainly in micro and nano pore throats or bedding fractures in free or adsorbed states. There are two sweet spot layers separated by mudstones. The formation pressure and maturity of shale reservoirs gradually decrease from the sag area to the slope area, while the crude oil density gradually increases. The quality and maturity of source rocks controlled the distribution and properties of shale oil. The sedimentary microfacies controlled the distribution of shale oil. The lithology and physical properties of shale controlled the enrichment of shale oil. Hydrocarbon generation pressurization was the main driving force for shale oil accumulation.
- shale oil /
- reservoir characteristics /
- saline lake /
- Lucaogou Formation /
- Jimsar sag /
- Junggar Basin

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图 1 准噶尔盆地吉木萨尔凹陷地质概况

Figure 1. Geological overview of Jimsar Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 2 准噶尔盆地吉36—吉31井芦草沟组页岩油层对比剖面

Figure 2. Shale oil reservoir profile from well J36 to well J31 in Lucaogou Formation, Jimsar Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 3 准噶尔盆地吉木萨尔凹陷烃源岩厚度与页岩油分布有利区叠合图

Figure 3. Superimposition of source rock thickness and favorable shale oil distribution in Jimsar Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 4 准噶尔盆地芦草沟组二段碳质泥岩有机岩石学特征

Figure 4. Organic petrological characteristics of carbonaceous mudstones in upper part of Lucaogou Formation, Jimsar Sag, Junggar Basin

下载: 全尺寸图片幻灯片

图 5 准噶尔盆地吉木萨尔凹陷芦草沟组烃源岩成熟度(R_o)等值线与原油黏度等值线叠合

Figure 5. Source rock maturity (R_o) and crude oil viscosity of Lucaogou Formation, Jimsar Sag, Junggar Basin

下载: 全尺寸图片幻灯片

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