松辽盆地齐家和古龙凹陷页岩油含油性参数优选与资源量计算

doi:10.13686/j.cnki.dzyzy.2021.03.022

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摘要松辽盆地齐家和古龙凹陷青山口组一段页岩油资源丰富.以往主要基于不完整的老岩心资料，以校正后的热解S₁或氯仿沥青"A"作为含油性参数计算页岩油资源量，校正参数的准确性受样品新鲜程度、测试手段及校正方法等多种因素影响，导致上述参数的应用存在一定的局限性.根据最新页岩油勘探进展，对比分析了页岩油资源量计算的含油性参数（包括热解S₁、氯仿沥青"A"和含油饱和度）的应用差异，认为含油饱和度可反映游离油和溶解烃含量，不用考虑吸附油影响，且无需进行轻烃、重烃和NSO化合物校正，在具有新鲜样品测试数据的条件下，更适合作为研究区页岩油资源量计算的含油性参数.基于最新页岩油参数井钻探成果和测试数据，明确了有效泥页岩厚度、有机质丰度（TOC）、有机质成熟度（R_o）和埋深的平面分布.通过多因素叠合法查明了齐家和古龙凹陷青山口组一段页岩油富集区面积分别为1 957.23 km²和4 509.09 km².结合密闭冷冻样品的含油饱和度、页岩油密度实测数据和有效孔隙度测井解释数据，通过体积法计算出齐家和古龙凹陷青山口组一段页岩油富集区资源量分别为19.79×10⁸ t和27.29×10⁸ t，表明研究区基质型页岩油具有很好的勘探前景.

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关键词 ：松辽盆地, 齐家凹陷, 古龙凹陷, 青山口组一段, 含油饱和度, 页岩油, 资源量

Abstract：There are abundant shale oil resources in the first member of Qingshankou Formation in Qijia and Gulong sags of Songliao Basin. In the past, the shale oil resources were calculated mainly based on incomplete old core data with corrected pyrolysis S₁ or chloroform asphalt "A" as oil-bearing parameters. The accuracy of corrected parameters was affected by multiple factors including sample freshness, testing means and correction method, leading to certain limitations in the application of the above parameters. According to the latest development in shale oil exploration, the paper compares the applications of different oil-bearing parameters (pyrolysis S₁, chloroform bitumen "A" and oil saturation) in shale oil resource calculation. The result shows that oil saturation can reflect the content of free oil and dissolved hydrocarbon, without considering the influence of adsorbed oil and correction of light hydrocarbon, heavy hydrocarbon and NSO compound. This parameter is more suitable for the calculation of shale oil resources under the condition of fresh sample test data. The plane distribution of effective shale thickness, TOC, organic maturity(R_o) and burial depth are determined on the basis of latest drilling results and test data of shale oil parameter well. The shale oil enrichment areas in the first member of Qingshankou Formation in Qijiahe and Gulong sags are 1957.23 km² and 4509.09 km² respectively by multifactor overlap method. Combined with the measured data of oil saturation, density and effective porosity logging interpretation data of sealed frozen samples, the resources of shale oil enriched areas in Qijia and Gulong sags are calculated as 19.79×10⁸ t and 27.29×10⁸ t respectively, indicating the matrix shale oil in the study area has a good exploration prospect.

Key words： Songliao Basin Qijia sag Gulong sag first member of Qingshankou Formation oil saturation shale oil resource calculation

收稿日期: 2021-02-19

PACS:	P618.13
	TE155

基金资助:中国地质调查局项目"松辽盆地北部页岩油战略调查"（DD20190114）；"大庆齐家-古龙地区页岩油气战略调查与评价"（DD20179613）.

通讯作者: 杨建国(1967-),男,博士,教授级高级工程师,主要从事页岩油调查与石油地质综合研究,通信地址辽宁省沈阳市皇姑区黄河北大街280号,E-mail//yangjianguo@mail.cgs.gov.cn E-mail: yangjianguo@mail.cgs.gov.cn

作者简介: 肖飞(1987-),男,博士,高级工程师,主要从事页岩油调查与油气地球化学研究,通信地址辽宁省沈阳市皇姑区黄河北大街280号,E-mail//xiaof@mail.cgs.gov.Cn

引用本文:

肖飞, 杨建国, 李士超, 姚玉来, 李昂, 张丽艳, 黄一鸣, 冉清昌. 松辽盆地齐家和古龙凹陷页岩油含油性参数优选与资源量计算[J]. 地质与资源, 2021, 30(3): 395-404,305.
XIAO Fei, YANG Jian-guo, LI Shi-chao, YAO Yu-lai, LI Ang, ZHANG Li-yan, HUANG Yi-ming, RAN Qing-chang. OIL-BEARING PARAMETER OPTIMIZATION AND RESOURCE CALCULATION OF THE SHALE OIL IN QIJIA AND GULONG SAGS, SONGLIAO BASIN. GEOLOGY AND RESOURCES, 2021, 30(3): 395-404,305.

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http://manu25.magtech.com.cn/Jweb_dzyzy/CN/10.13686/j.cnki.dzyzy.2021.03.022 或 http://manu25.magtech.com.cn/Jweb_dzyzy/CN/Y2021/V30/I3/395

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