西南石油大学学报(自然科学版) ›› 2022, Vol. 44 ›› Issue (1): 27-40.DOI: 10.11885/j.issn.1674-5086.2020.01.09.03

• 地质勘探 • 上一篇    下一篇

多期次构造运动对不同物源成分砂岩控制作用

王爱1, 钟大康2,3, 王威4, 周志恒2,3, 唐自成2,3   

  1. 1. 中国石化石油勘探开发研究院,北京 海淀 100083;
    2. 中国石油大学(北京)地球科学学院,北京 昌平 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 昌平 102249;
    4. 中国石化勘探分公司,四川 成都 610041
  • 收稿日期:2020-01-09 发布日期:2022-01-25
  • 通讯作者: 钟大康,E-mail:zhongdakang@263.net
  • 作者简介:王爱,1989年生,男,汉族,湖南衡阳人,博士,主要从事岩石学和储层地质学等方面的研究工作。E-mail:wangai.syky@sinopec.com;
    钟大康,1961年生,男,汉族,四川资中人,教授,博士生导师,主要从事储层地质学及沉积学方面的教学及研究。E-mail:zhongdakang@263.net;
    王威,1980年生,男,汉族,江苏徐州人,高级工程师,博士,主要从事储层评价与油气成藏方面的研究。E-mail:wangw.ktnf@sinopec.com;
    周志恒,1994年生,男,汉族,山东东营人,硕士研究生,主要从事岩石学和储层地质学等方面的研究。E-mail:zzh3400learner@qq.com;
    唐自成,1993年生,男,汉族,重庆大足人,硕士研究生,主要从事储层地质学方面的研究工作。E-mail:chengzitang112207@163.com
  • 基金资助:
    国家科技重大专项(2016ZX05002004 -011); 中国石油化工股份有限公司科技部项目(P19012-2)

Controls of Multi-stage Tectonic Movement on Sandstones with Different Provenances

WANG Ai1, ZHONG Dakang2,3, WANG Wei4, ZHOU Zhiheng2,3, TANG Zicheng2,3   

  1. 1. Petroleum Exploration and Production Research Institute, SINOPEC, Haidian, Beijing 100083, China;
    2. College of Geosciences, China University of Petroleum, Changping, Beijing 102249, China;
    3. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Changping, Beijing 102249, China;
    4. SINOPEC Exploration Company, Chengdu, Sichuan 610041, China
  • Received:2020-01-09 Published:2022-01-25

摘要: 通过普通岩石薄片和孔隙铸体薄片观察、扫描电镜、阴极发光和X衍射分析及压汞实验等手段,对川东北地区须家河组致密砂岩储层的岩石学特征、成岩作用、物性特征及孔隙类型和孔隙演化等方面进行分析,进而研究多期次构造运动对不同物源成分砂岩的控制作用。结果表明,印支晚期,研究区盆缘造山活动的强弱控制了须家河组物源供给和物源区母岩类型的差异,形成了不同类型的砂岩,包括元坝西须二段岩屑砂岩、元坝西须三段钙屑砂岩、巴中须四段长石岩屑砂岩、马路背须家河组石英砂岩和岩屑砂岩。在燕山运动和喜马拉雅运动的持续影响下,从大巴山前陆挤压带向盆地内由近及远依次发育马路背强变形区、巴中中等变形区和元坝西弱变形区,不同构造部位不同类型砂岩经历了不同的成岩序列和孔隙演化过程。构造部位控制了构造挤压强弱与裂缝及断层发育程度及规模,进而决定了原始孔隙与后期溶蚀孔隙保存程度以及孔隙的连通性,也控制了源储关系与油气充注程度,最终控制天然气产能。

关键词: 构造运动, 物源, 产能, 致密砂岩, 须家河组

Abstract: Based on ordinary thin sections and pore casting thin section observation, scanning electron microscopy, cathodoluminescence and X-ray diffraction analysis as well as mercury intrusion experiments, this thesis analysis the petrological characteristics, diagenesis, physical properties, pore types and pore evolution of the tight sandstone reservoirs of the Xujiahe Formation in the northeastern Sichuan Basin, furthermore studies the control effect of multi-stage tectonic movement on sandstones with different provenances. The results show that in the late Indosinian period, the difference in provenance supply and the type of parent rock of source area caused by the strength of the basin-forming orogenic activities in the study area resulted in different types of sandstone, which were described before, including the lithic sandstone of the Xu-2 tight sandstones, the calcarenaceous sandstone of the Xu-3 tight sandstones, the feldspathic lithic sandstone of the Xu-4 tight sandstones, and the quartz sandstone with lithic sandstone of the Xujiahe Formation in three area (western Yuanba Area, Bazhong Area, Malubei Area), respectively. Under the continuous influence of Yanshan Movement and Xishan Movement, Malubei strong deformation zone, Bazhong medium deformation zone and western Yuanba weak deformation zone are developed from near to far from the Daba Mountain foreland compressive zone. Different types of sandstones in different tectonic locations have experienced different diagenetic sequences and porosity evolution processes. The tectonic action controls the structural extrusion strength, and crack and fault development degree and scale, which further determines the preservation of the original pores and the later dissolution pores and the connectivity of the pores. It also controls the source-storage relationship and the degree of oil and gas charging, and ultimately controls natural gas yield.

Key words: tectonic movement, provenances, gas yield, tight sandstones, Xujiahe Formation

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