苏干湖盆地及毗邻柴北缘西段侏罗系残留地层发育特征

韦成杰; 朱世发; 杜建军; 乐辉; 李宗星

苏干湖盆地及毗邻柴北缘西段侏罗系残留地层发育特征

韦成杰^{1, 2,},
朱世发^{2, 3},
杜建军^1, ,,
乐辉^{2, 3},
李宗星¹

1.
中国地质科学院地质力学研究所, 北京 100081
2.
中国石油大学(北京)地球科学学院, 北京 102249
3.
中国石油大学(北京)油气资源与探测国家重点实验室, 北京 102249

基金项目:

中国地质调查局项目 12120115003501-1

国家自然科学基金青年科学基金 41202107

教育部高等学校博士学科点专项科研基金（新教师类） 20120007120004

中国石油大学（北京）科研基金 KYJJ2012-01-20

详细信息

作者简介:
韦成杰(1993-), 男, 硕士研究生, E-mail:chengjietianxia@126.com

通讯作者:
杜建军(1976-), 男, 博士, 高级工程师, E-mail:djjwyf@sina.com

中图分类号: P539;P534.52
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- 被引次数: 0
出版历程
- 收稿日期: 2016-10-22
- 刊出日期: 2017-06-01

THE DEVELOPMENT CHARACTERISTICS OF THE RESIDUAL JURASSIC STRATUM IN SUGANHU BASIN AND THE WEST SECTION OF THE NORTHERN MARGIN OF THE QAIDAM BASIN

WEI Cheng-jie^{1, 2
,},
ZHU Shi-fa^{2, 3},
DU Jian-jun^{1
, ,},
YUE Hui^{2, 3},
LI Zong-xing¹

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
College of Geosciences, China University of Petroleum, Beijing 102249, China
3.
State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China

摘要

摘要: 前期的油气勘探和评价揭示了柴北缘西段侏罗系具有良好的油气和煤炭勘探前景。在前人研究的基础上，利用野外露头、岩心、钻井及地震等资料，对柴北缘西段侏罗系残留地层发育特征进行了系统研究，初步落实了侏罗系残留地层的分布。侏罗系自下而上可划分为下统的湖西山组和小煤沟组，中统的大煤沟组及上统的采石岭组和红水沟组。下统主要见于冷湖构造带（湖西山组）和苏干湖盆地东部的向阳煤矿（小煤沟组）。湖西山组的下部岩性为厚层粗粒沉积物，表现为水下扇沉积特征，上部为大套湖相暗色泥岩；小煤沟组厚度较薄，沉积物粒度粗，发育煤层。中、上侏罗统主要分布于赛什腾凹陷和苏干湖盆地内的西部凹陷、中部凹陷、向阳煤矿。根据钻井显示，苏干湖盆地内中侏罗统主要发育大煤沟组五至七段，岩性主要为灰色、灰黑色泥岩夹灰色细砂岩、砾岩及薄煤层；其中五段为主力煤层和油气烃源岩层。上侏罗统岩性主要为棕红色、褐色泥岩夹砾岩、砂岩。残留地层的分布主要受控于沉积中心的迁移和断裂的展布。
- 沉积地层 /
- 地层分布 /
- 构造作用 /
- 侏罗系 /
- 地层特征 /
- 苏干湖盆地
Abstract: Previous exploration and assessment of oil and gas showed that Jurassic stratum in the west section of the northern margin of the Qaidam Basinare are of excellent potential in oil and gas and coal. Based on the previous research, development characteristics of the residual Jurassic stratum in the west section of the northern margin of the Qaidam Basin are studied systemically through field outcrops, cores, drilling and seismic data, and the distribution characteristics are determined preliminarily. Jurassic could be divided into several formations from bottom to top, including Huxishan and Xiaomeigou formation in the lower part, Dameigou formation in the middle part, and Caishiling and Hongshuigou formation in the upper part. The Lower Jurassic mainly distributes in Lenghu structural belt(Huxishan formation)in the Southern Suganhu Basin, and Xiangyang coal mine in the eastern Suganhu basin(Xiaomeigou formation). The lithology of lower Huxishan Formation consists of thick coarse sediments which show features of subaqueous fan sedimentation, and the thick dark shales develop in the upper formation; Xiaomeigou Formation is thinner with coarser sediments which are suitable for the development of coalbed. The Middle and Upper Jurassic stratum mainly developped in the Saishiteng sag and the West Depression, Central Depression and Xiangyang coal mine inside the Suganhu Basin. According to the drilling data, it is mainly the fifth to seventh member of Dameigou formation that developed inside Suganhu Basin, with lithology of grey, ash black shale interbedded with fine sandstone, conglomerate and thin coal layer, and the fifth member is predominant coalbeds and oil and gas hydrocarbon source rocks. The lithology of Upper Jurassic is brownish red shale interbedded with conglomerate and sandstone. The distribution of residual stratum is basically controlled by the transfer of the deposit center and the distribution of the fractures.
- sedimentary strata /
- stratigraphic distribution /
- tectonism /
- Jurassic /
- formation characteristics /
- Suganhu Basin

HTML全文

图 1 柴北缘地区地理位置图

Figure 1. Location map of the northern margin of the Qaidam Basin

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图 2 柴北缘西段侏罗系综合柱状图

Figure 2. Comprehensive stratigraphic column of the western sector of northern margin of Qaidam Basin

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图 3 向阳煤矿野外露头相标志

Figure 3. Outcrop facies marks of Xiangyang Coal Mine

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图 4 向阳煤矿侏罗系地层实测剖面图

Figure 4. Jurassic observed profile of Xiangyang Coal Mine

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图 5 结绿素地区野外露头相标志

Figure 5. Outcrop facies mark in Jielvsu area

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图 6 结绿素侏罗系地层实测剖面图

Figure 6. Jurassic observed profile of Jielvsu area

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图 7 云雾山地区野外露头相标志

Figure 7. Outcrop facies marks in Yunwushan area

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图 8 云雾山侏罗系地层实测剖面图

Figure 8. Jurassic observed profile in Yunwushan area

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图 9 柴北缘西段侏罗系下统残余厚度图

Figure 9. The thickness chart of the lower Jurassic residual of the western sector of the northern margin of Qaidam Basin

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图 10 苏干湖盆地S84141测线地震剖面

Figure 10. Seismic profile of measuring line S84141 in Suganhu Basin

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图 11 苏干湖盆地SG9954测线地震剖面

Figure 11. Seismic profile of measuring line SG9954 in Suganhu Basin

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图 12 苏干湖盆地SG9958测线地震剖面

Figure 12. Seismic profile of measuring line SG9958 in Suganhu Basin

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图 13 柴北缘西段中侏罗统残余厚度图

Figure 13. The thickness chart of the middle Jurassic residual of the western sector of the northern margin of Qaidam Basin

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图 14 柴北缘西段上侏罗统残余厚度图

Figure 14. The thickness chart of the upper Jurassic residual of the western sector of the northern margin of Qaidam Basin

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图 15 过伊北凹陷-冷湖构造带-赛什腾凹陷-赛什腾山-苏干湖盆地中生代沉积演化模式示意图

Figure 15. Mesozoic sedimentary evolution mode of passing Yibei Depression-Lenghu tectonic zone-Serteng Depression-Sertengshan Mountain-Suganhu Basin

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表 1 探井分层数据表

Table 1. Hierarchical data of the wells in Suganhu Basin

井号	井深(m)	补心海拔(m)	Q₁₊₂	N₂¹	N₁	E₃	E₁₊₂	J₃	J₂	J₁
苏参1	2789.4	3003.64	298	546	936	1374.5	1848	2135	2653
苏探1	2878	3006.19	290	510	820	1218	1647	2498	2878_▽
冷科1	5200	2774.2			784	2520	3473	未钻遇	未钻遇	5200

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