准噶尔盆地阜东地区石炭系松喀尔苏组烃源岩评价及气源对比

杨帆, 宋永, 陈洪, 龚德瑜, 卞保力, 刘海磊

doi:10.11764/j.issn.1672-1926.2019.03.006

天然气地球科学 >

2019 , Vol. 30 >Issue 7: 1018 - 1026

DOI: https://doi.org/10.11764/j.issn.1672-1926.2019.03.006

天然气地质学

准噶尔盆地阜东地区石炭系松喀尔苏组烃源岩评价及气源对比

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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

杨帆（1984-)，男，满族，山东招远人，高级工程师，博士，主要从事准噶尔盆地油气地质研究.E-mail：yangfan84@foxmail.com.

收稿日期: 2019-01-10

修回日期: 2019-03-14

网络出版日期: 2019-08-07

基金资助

国家科技重大专项“准噶尔盆地岩性地层油气藏分布规律与目标评价”（编号：2017ZX05001-004)资助.

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Evaluation of Carboniferous Songkaersu Formation source rocks and gas-source correlation in the Fukang Sag of eastern Junggar Basin

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

Yang Fan(1984-), Male, Senior engineer, Doctor, Mainly engaged in petroleum geology research in Junggar Basin research. E-mail：yangfan84@foxmail.com.

Received date: 2019-01-10

Revised date: 2019-03-14

Online published: 2019-08-07

Supported by

Supported by the China National Science and Technology Major Project “Distribution rule and target evaluation of lithologic stratigraphic oil and gas reservoirs in Junggar Basin” (Grant No. 2017ZX05001-004).

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摘要

准噶尔盆地F26石炭系高产气井的出现，表明阜东地区发育石炭系有效烃源岩。为了落实阜东地区石炭系烃源岩的规模，通过对所有钻遇石炭系松喀尔苏组烃源岩的19口井进行系统分析和评价，证实阜东地区石炭系具备规模勘探潜力。①阜东地区石炭系松喀尔苏组发育炭质泥岩、凝灰质泥岩，是中等—好的煤系烃源岩，TOC含量为0.54%~41.2%，以Ⅲ型干酪根为主。由于烃源岩采样点处于北三台凸起高部位，烃源岩成熟度偏低，平均为0.88%。②阜东地区天然气主要为源自石炭系的高熟煤型气和源自侏罗系的低熟煤型气，以干气为主。来自石炭系的高熟煤型气等效成熟度一般在1.2%以上，表明阜东、北三台地区石炭系生烃灶位于阜康凹陷区或北三台凸起深部。③沙奇隆起及阜康、北三台、吉木萨尔地区在石炭纪为前陆盆地的隆后斜坡，处于浅水环境，具备发育规模煤系烃源岩的构造背景。阜东、北三台地区具备天然气勘探的巨大潜力，有望成为继克拉美丽大气田以后又一天然气规模勘探区。

关键词： 阜康凹陷; 克拉美丽; 石炭系; 烃源岩; 煤型气

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杨帆, 宋永, 陈洪, 龚德瑜, 卞保力, 刘海磊 . 准噶尔盆地阜东地区石炭系松喀尔苏组烃源岩评价及气源对比[J]. 天然气地球科学, 2019 , 30(7) : 1018 -1026 . DOI: 10.11764/j.issn.1672-1926.2019.03.006

Abstract

The high yield gas production of Well F26 shows that effective source rocks are developed in the Carboniferous.In order to evaluate the scale of the Carboniferous source rocks in the eastern Fukang Sag of the Junggar Basin，19 wells in the Carboniferous Songkaersu Formation were systematically studied.The research results show that the Carboniferous of eastern Fukang Sag has great potential in gas exploration.(1)The Carboniferous Songkaersu Formation is moderately-rich coal-bearing source rocks.The TOC is 0.54%-41.2%，with Type Ⅲ kerogen as the dominant source.As the source rock is located at the high position of the Beisantai Uplift，the maturity of the source rock is low，with an average of 0.88%.(2)The natural gas in Fudong area is mainly high-maturity coal-derived gas sourced from Carboniferous and low-maturity coal-derived gas sourced from Jurassic，with dry gas as the main source.The equivalent maturity of high-maturity coal-derived gas from the Carboniferous system is generally above 1.2%，indicating that the Carboniferous hydrocarbon generation stoves in the Fukang Sag or in the deep part of the Beisantai Uplift.(3)Shaqi Uplift and Fukang Sag，Jimusaer Sag were situated in the back-bulge slope，where is very suitable for coal source rock development.It is considered that the Fudong and Beisantai areas have great potential for natural gas exploration and are expected to become another natural gas scale exploration area after the Kelameili gas field.

Key words： Fukang Sag; Kelameili; Carboniferous; Source rock; Coal type gas

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