准噶尔盆地吉木萨尔凹陷二叠系芦草沟组致密油资源评价

邱振, 吴晓智, 唐勇, 郑民, 王桂君, 郭秋麟, 王社教, 谢红兵

doi:10.11764/j.issn.1672-1926.2016.09.1688

天然气地球科学 >

2016 , Vol. 27 >Issue 9: 1688 - 1698

DOI: https://doi.org/10.11764/j.issn.1672-1926.2016.09.1688

天然气地质学

准噶尔盆地吉木萨尔凹陷二叠系芦草沟组致密油资源评价

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1.中国石油勘探开发研究院，北京 100083;
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;
3.中国石油新疆油田分公司实验检测研究院，新疆克拉玛依 834000

邱振(1984-)，男，安徽亳州人，工程师,博士,主要从事沉积学、石油地质学与资源评价研究. E-mail:qiuzhen@petrochina.com.cn.

收稿日期: 2016-04-16

修回日期: 2016-06-09

网络出版日期: 2019-09-11

基金资助

中国石油天然气股份有限公司重大科技专项“油气资源评价_中国石油第四次油气资源评价”(编号:2013E-0502)资助.

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Resource assessment of tight oil from the Permian Lucaogou Formation in Jimusar Sag,Junggar Basin,China

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1.Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China;
2.Research Institute of Petroleum Exploration and Development,PetroChina Xinjiang Oilfield Company,
Karamay 834000,China;3.Research Institute of Petroleum Experiment and Detection,
PetroChina Xinjiang Oilfield Company,Karamay 834000,China

Received date: 2016-04-16

Revised date: 2016-06-09

Online published: 2019-09-11

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摘要

近期，新疆油田非常规致密油领域获得重大突破，有效推动了我国非常规油气勘探。准噶尔盆地东部吉木萨尔凹陷二叠系芦草沟组致密油储集岩主要由泥质粉(细)砂岩、白云质粉(细)砂岩和砂屑白云岩组成，纵向上集中发育为上、下2段，下段以粉砂岩为主，上段以湖相云质岩为主，具有典型的咸化湖相沉积特征。吉木萨尔凹陷二叠系芦草沟组优质烃源岩发育，致密储层大面积连续分布，且具有纵向上“源储共生”、横向上连续分布的源储组合关系；致密油成藏主要受优质烃源岩分布、致密储层物性、含油饱和度控制，沿致密储层集中段富集。基于上述特征，采用小面元、EUR评价方法计算凹陷上、下2段致密油的地质资源量约为20×10⁸t，技术可采资源量约为1.15×10⁸t；其中较为现实的Ⅰ类资源量约为2.5×10⁸t，技术可采资源量为0.16×10⁸t。吉木萨尔凹陷致密油作为典型咸化湖盆地源内互层致密油类型，开展芦草沟组致密油刻度区解剖，获取地质评价与资源评价关键参数，将为类似非常规致密油区块资源评价提供类比及借鉴依据。

关键词： 致密油; 资源评价; 评价参数; 芦草沟组; 吉木萨尔凹陷

本文引用格式

邱振, 吴晓智, 唐勇, 郑民, 王桂君, 郭秋麟, 王社教, 谢红兵 . 准噶尔盆地吉木萨尔凹陷二叠系芦草沟组致密油资源评价[J]. 天然气地球科学, 2016 , 27(9) : 1688 -1698 . DOI: 10.11764/j.issn.1672-1926.2016.09.1688

Abstract

In recent years,significant progress has been made on the exploration of tight oil by the PetroChina Xinjiang Oilfield Company,further driving the exploration of unconventional petroleum in China.Reservoirs of the tight oil from the Middle Permian Lucaogou Formation in Jimusar Sag of the Junggar Basin are composed of muddy siltstone,dolomite siltstone and sandy dolomite.They vertically developed in two sections:the upper section (consisting of siltstone) and the lower section (consisting of lacustrine dolomite rocks),showing typical characteristics of saline-lacustrine sediments.High-quality source rocks commonly developed in the Middle Permian Lucaogou Formation and tight reservoirs are distributed in a large area continuously with giant reservoir space,of which have vertically alternating-relationship and laterally continuous distribution.Accumulation of tight oil is mainly controlled by the distribution of source rocks,reservoir property and oil saturation,enriching in the tight reservoir section.Based on geological characteristics of tight oil described above,a precise integration method (the small patch method and EUR analogy method) was applied to assess the low and upper tight oil resources with a sum of 2 billion tons in place and 0.115 billion tons of the technically recoverable resources (TRR).Among them,the type Ⅰ resource reaches up to 0.25 billion tons in place and 0.016 billion tons of TRR as available resources.The tight oil in Jimusar Sag,as typical saline-lacustrine tight oil,was analyzed about the geological and resource assessment parameters,providing a classic example of the integrated resource assessment of unconventional petroleum for others.

Key words： Tight oil; Resource assessment; Assessment parameters; Lucaogou Formation; Jimusar Sag

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