准噶尔盆地北三台凸起断裂结构特征及成岩封闭作用

张丽辰; 吴孔友; 何文军; 陈洪; 郑孟林; 贾西玉

doi:10.12090/j.issn.1006-6616.2018.24.05.061

准噶尔盆地北三台凸起断裂结构特征及成岩封闭作用

doi: 10.12090/j.issn.1006-6616.2018.24.05.061

1.
中国石油大学地球科学与技术学院, 山东青岛 266580
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

基金项目:

国家自然科学基金 41272142

详细信息

作者简介:
张丽辰(1991-), 女, 硕士, 研究方向构造地质学。E-mail:1226401705@qq.com

通讯作者:
吴孔友(1971-), 男, 博士, 教授, 主要从事地质构造与油气成藏研究。E-mail:wukongyou@163.com

中图分类号: P542.3;P618.13
计量
- 文章访问数: 193
- HTML全文浏览量: 79
- PDF下载量: 13
- 被引次数: 0
出版历程
- 收稿日期: 2017-12-12
- 修回日期: 2018-04-08
- 刊出日期: 2018-10-28

STRUCTURAL CHARACTERISTICS AND DIAGENETIC SEALING OF FAULTS IN THE BEISANTAI SWELL, JUNGGAR BASIN

1.
School of Geosciences, China University of Petroleum, Qingdao 266580, Shandong, China
2.
Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay 834000, Xinjiang, China

摘要

摘要: 断层具有复杂的内部结构，可划分为滑动破碎带和诱导裂缝带两个结构单元。断裂带内部成岩作用普遍发育，其中，胶结作用是断裂两侧诱导裂缝带中较常见的成岩作用，影响着断裂的垂向封闭性。利用地震、测井、岩心等资料定量化的对准噶尔盆地北三台凸起主要断裂进行结构划分，利用岩心、镜下薄片观察的方法研究断裂带成岩胶结作用。研究发现：断裂带成岩胶结作用显著，胶结物以方解石为主，还发现有粘土矿物、沸石、石英等胶结裂缝。大型主控断裂裂缝充填程度相比派生断裂高，胶结程度致密，对油气的封堵性能更强。通过镜下鉴定及流体包裹体均一温度测定发现：北三台凸起断裂带至少经历了3期大规模流体活动，多期的流体作用导致该区断裂的成岩封闭。
- 断裂带结构 /
- 胶结作用 /
- 流体活动 /
- 北三台凸起 /
- 准噶尔盆地
Abstract: A fault has a complex internal structure, which can be divided into slip damage zone and induced fracture zone. The internal diagenesis of the fault zone is widely developed, and the cementation is the most important diagenesis in the induced fracture zone on both sides of the fault, which plays an important role in the vertical sealing of the fault. The structure of the main faults in the Beisantai swell is divided quantitatively by using seismic, logging and core information, and diagenetic cementation of fault zone is studied through core observation and microscope observation of thin section. The results show that the cementation of fault zone is obvious and there are various types of cement, mainly calcite; clay minerals, zeolite, quartz and other cement are also found in fractures. Compared with the derived faults, the fracture filling and cementation of large main faults are more intense, and the sealing performance of the oil and gas is stronger. The identification under microscope and the uniform temperature test of fluid inclusion suggest that there were at least three periods of great fluid activities in the Beisantai swell, and the multiple fluid activities lead to the diagenetic sealing of the faults in this area.
- fault zone structure /
- cementation /
- fluid activity /
- the Beisantai swell /
- Junggar Basin

HTML全文

图 1 研究区位置图

Figure 1. Location of the study area

下载: 全尺寸图片幻灯片

图 2 北三台凸起断层平面分布图

Figure 2. The planar distribution and structural characteristics of faults in the Beisantai swell

下载: 全尺寸图片幻灯片

图 3 西泉2井断裂带内部结构测井曲线综合判别图

Figure 3. Comprehensive discrimination of the internal structure of fault in well Xiquan 2

下载: 全尺寸图片幻灯片

图 4 断裂带内部结构发育规律

a—滑动破碎带与诱导裂缝带关系；b—断裂带内部结构各部分占比；c—断距与断裂带宽度关系

Figure 4. The internal structure development regulation of the fault zone

下载: 全尺寸图片幻灯片

图 5 北三台凸起主干断层胶结物类型

Figure 5. Cement types of the main faults in the Beisantai swell

下载: 全尺寸图片幻灯片

图 6 断裂带内流体包裹体产状、形态特征

Figure 6. Fluid inclusion occurrences and characteristics in the fault zone

下载: 全尺寸图片幻灯片

图 7 北三台凸起断裂带流体活动史

(a)流体包裹体均一温度分布直方图 (b)北13井埋藏史图

Figure 7. Fluid activity history of the fault zone in the Beisantai swell

下载: 全尺寸图片幻灯片

表 1 断裂带结构单元测井曲线识别判别标准表

Table 1. Well logging curve identification criterion of fault zone structure unit

断裂结构单元	R_TC	P₂	ΔAC	ΔDEN	ΔCNL	CAL_d	CWP
滑动破碎带	稳定，值小，无差值	稳定、值较小	稳定、值较小	稳定、值较小	稳定、值较小	稳定、值较小	稳定、值较小
诱导裂缝带	波动，值大，有差值	波动、值较大	波动、跳跃、较大	波动、值较大	波动、值较大	波动、值较大	波动、值较大
注：R_TC-深浅电阻率差比；P₂-次生孔隙度变化值；ΔAC-声波变化率；ΔDEN-密度变化率；ΔCNL-中子变化率；CAL_d-井径增大率；CWP-断裂带综合判别参数

下载: 导出CSV

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