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松科二井邻域沙河子组含油气地层结构特征——基于测井和地震数据的分析

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符伟, 侯贺晟, 张交东, 刘财, 冯晅, 卢占武. 2019. 松科二井邻域沙河子组含油气地层结构特征——基于测井和地震数据的分析[J]. 中国地质, 46(5): 1052-1060. doi: 10.12029/gc20190507
引用本文: 符伟, 侯贺晟, 张交东, 刘财, 冯晅, 卢占武. 2019. 松科二井邻域沙河子组含油气地层结构特征——基于测井和地震数据的分析[J]. 中国地质, 46(5): 1052-1060. doi: 10.12029/gc20190507
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FU Wei, HOU Hesheng, ZHANG Jiaodong, LIU Cai, FENG Xuan, LU Zhanwu. 2019. Structural characteristics of Shahezi Formation beneath the Well SK-2 and its periphery: An analysis of logging and seismic data[J]. Geology in China, 46(5): 1052-1060. doi: 10.12029/gc20190507
Citation: FU Wei, HOU Hesheng, ZHANG Jiaodong, LIU Cai, FENG Xuan, LU Zhanwu. 2019. Structural characteristics of Shahezi Formation beneath the Well SK-2 and its periphery: An analysis of logging and seismic data[J]. Geology in China, 46(5): 1052-1060. doi: 10.12029/gc20190507
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松科二井邻域沙河子组含油气地层结构特征——基于测井和地震数据的分析

  • 1.

    中国地质科学院, 北京 100037

  • 2.

    中国地质科学院地质研究所自然资源部深地动力学重点实验室, 北京 100037

  • 3.

    中国地质调查局油气资源调查中心, 北京 100083

  • 4.

    吉林大学地球探测科学与技术学院, 吉林 长春 100026

  • 基金项目:
    中国地质调查局项目（DD20160207，DD20189702，DD20190010）、国家自然科学基金项目（41474081，41430213，41590863，41574093）、自然资源部深地动力学重点实验室自主研究课题（J1901-3）联合资助
详细信息
    作者简介: 符伟, 男, 1991年生, 博士后, 主要从事深地震反射数据处理与解释研究; E-mail:614658187@qq.com
    通讯作者: 侯贺晟, 男, 1980年生, 副研究员, 主要从事深部探测与深部能源远景分析研究; E-mail:hesheng.hou@126.com

  • 中图分类号: P618.13;P631

Structural characteristics of Shahezi Formation beneath the Well SK-2 and its periphery: An analysis of logging and seismic data

  • 1.

    Chinese Academy of Geological Sciences, Beijing 100037, China

  • 2.

    Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China

  • 3.

    Center for Oil and Gas Survey, China Geological Survey, Beijing 100029, China

  • 4.

    College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, Jilin, China

  • Fund Project: Supported by the China Geological Survey Program (No. DD20160207, DD20189702, DD20190010), National Natural Science Foundation of China (No. 41474081, 41430213, 41590863, 41574093) and Independent Research Subject of Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources (No. J1901-3)
More Information
    Author Bio: FU Wei, male, born in 1991, postdoctor, mainly engages in deep seismic reflection data processing and interpretation research; E-mail: 614658187@qq.com .
    Corresponding author: HOU Hesheng, male, born in 1980, associate researcher, mainly engages in the study of deep exploration and deep energy perspective analysis; E-mail: hesheng.hou@126.com

    摘要

  • 松辽盆地大陆深部科学钻探工程"松科二井"获得了最完整的沙河子组地层岩心，初步识别出深部页岩气气测异常43层，累计厚度102 m，显示出沙河子组地层具有良好的深部能源前景。为进一步分析松辽盆地沙河子组地层油气资源潜力，本文在前人研究的基础上，结合松科二井测井、岩心数据和地震数据，分析松科二井邻域沙河子组地层的层序特征和空间展布，同时以随钻录井记录到的气测异常为出发点，分析沙河子组地层的测井和地震响应。结果显示：松科二井邻域沙河子组地层具有厚度大、横向延续小的地层展布特点，根据测井、岩心及地震数据，将沙河子组地层分为4个三级层序：SQ1、SQ2、SQ3和SQ4，其中顶部SQ4层序具有较好的油气前景，其岩性以泥岩为主，并具有相对较高孔隙度、低波阻抗的测井曲线特征，在地震剖面上表现为连续强振幅，阻抗反演剖面上存在局部低波阻抗特征，揭示了该区沙河子组深层天然气资源的赋存条件。

    During implementation of the Deep Continental Scientific Drilling Engineering Project Well SK-2 in Songliao Basin, the most integrated core data of Shahezi Formation was obtained. And 43 abnormal strata of deep shale gas were preliminarily identified, with a cumulative thickness of 102 meters, indicating that Shahezi Formation has good deep energy prospect. For further analysis of oil and gas resources potential of Shahezi Formation in Songliao basin, in this paper, on the basis of previous studies and in combination with well logging, core data of Well SK-2 and the newly acquired 2-d seismic data in the north-south direction crossing Well SK-2, the spatial distribution and sequence characteristics of Shahezi formation in the vicinity of Well SK-2 well were analyzed. At the same time, based on gas abnormal data acquired form logging during drilling, the authors studied logging and seismic responses of oil and gas perspective reservoirs in Shahezi Formation. It is shown that the Shahezi Formation adjacent to Well SK-2 has large thickness but small lateral extension, and hence the authors divided it into 4 stratigraphic sequences based on well logging as well as seismic and core data, i.e., SQ1, SQ2, SQ3 and SQ4. Among the 4 stratigraphic sequences, SQ4 has a better energy prospect. Its lithology is dominated by mudstone and has the characteristics of high porosity and low wave impedance on logging curves, with continuous strong amplitude on seismic section. Impedance inversion section shows the characteristics of large wave impedance alternated with many smaller wave impedances. Thus, the occurrence conditions of deep natural gas resources of Shahezi Formation in this area are revealed.

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  • 图 1  松科二井井位位置（王璞珺等，2017）和松科二井邻区沙河子组地层深度分布图（据蔡全升，2017修改）

    Figure 1. 

    下载: 全尺寸图片 幻灯片

    图 2  松科二井岩心及测井资料揭示的沙河子组地层层序

    Figure 2. 

    下载: 全尺寸图片 幻灯片

    图 3  过松科二井南北向剖面（a，位置见图 1AA’；资料来源：中国地质调查局项目（DD20160207））和东西向截面（b, 据蔡全升等, 2017, 位置见图 1BB’）

    Figure 3. 

    下载: 全尺寸图片 幻灯片

    图 4  松科二井及邻区沙河子地层空间展布模型

    Figure 4. 

    下载: 全尺寸图片 幻灯片

    图 5  东西向截面波阻抗反演结果(资料来源：中国地质调查局项目（DD20189702）)

    Figure 5. 

    下载: 全尺寸图片 幻灯片

    表 1  松科二井及领区沙河子组层序特征总结

    Table 1.  Summary of sequence characteristics of Shahezi formation beneath the Well SK-2 and its periphery

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收稿日期:  2019-03-15
修回日期:  2019-06-03
刊出日期:  2019-10-25

目录

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