埋藏过程对深层—超深层碎屑岩成岩作用及优质储层发育的影响—

埋藏过程对深层—超深层碎屑岩成岩作用及优质储层发育的影响——以准噶尔盆地南缘下白垩统清水河组为例

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中文摘要：以准噶尔盆地南缘下白垩统清水河组为例,综合利用岩石薄片、扫描电镜、电子探针、稳定同位素组成及流体包裹体等技术手段,开展前陆盆地埋藏过程对深层—超深层碎屑岩成岩作用及优质储层发育影响的研究.研究表明,清水河组依次经历了"缓慢浅埋"、"构造抬升"、"渐进深埋"与"快速深埋"4个埋藏阶段."缓慢浅埋"与"构造抬升"不仅能够缓解储层颗粒间的机械压实作用,还有利于长期保持开放型的成岩体系;既能够促进大气淡水对储层易溶组分的充分溶解,还能够抑制溶蚀产物的沉淀.晚期"快速深埋"过程促成流体超压的发育,一方面有效地抑制压实、胶结作用对原生孔隙的破坏,另一方面也促进储层微裂缝的大量发育,提高了晚期有机酸充注产生的溶蚀效果.基于孔隙度演化史的定量恢复,证实长期"缓慢浅埋"与"构造抬升"过程对深层—超深层优质碎屑岩储层发育的贡献最大,其次为晚期"快速深埋"过程,"渐进深埋"过程则几乎没有贡献.

外文标题：Influences of burial process on diagenesis and high-quality reservoir development of deep-ultra-deep clastic rocks:A case study of Lower Cretaceous Qingshuihe Formation in southern margin of Junggar Basin,NW China

外文摘要：Taking the Lower Cretaceous Qingshuihe Formation in the southern margin of Junggar Basin as an example,the influences of the burial process in a foreland basin on the diagenesis and the development of high-quality reservoirs of deep and ultra-deep clastic rocks were investigated using thin section,scanning electron microscope,electron probe,stable isotopic composition and fluid inclusion data.The Qingshuihe Formation went through four burial stages of slow shallow burial,tectonic uplift,progressive deep burial and rapid deep burial successively.The stages of slow shallow burial and tectonic uplift not only can alleviate the mechanical compaction of grains,but also can maintain an open diagenetic system in the reservoirs for a long time,which promotes the dissolution of soluble components by meteoric freshwater and inhibits the precipitation of dissolution products in the reservoirs.The late rapid deep burial process contributed to the development of fluid overpressure,which effectively inhibits the destruction of primary pores by compaction and cementation.The fluid overpressure promotes the development of microfractures in the reservoir,which enhances the dissolution effect of organic acids.Based on the quantitative reconstruction of porosity evolution history,it is found that the long-term slow shallow burial and tectonic uplift processes make the greatest contribution to the development of deep-ultra-deep high-quality clastic rock reservoirs,followed by the late rapid deep burial process,and the progressive deep burial process has little contribution.

外文关键词：

deep-ultra-deep layerclastic rock reservoirdiagenesisburial modeLower Cretaceous Qingshuihe Formationsouthern margin of Junggar Basin

作者：

陈思芮、鲜本忠、纪友亮、李嘉奇、田荣恒、王鹏宇、唐禾元

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作者单位：

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

中国石油大学(北京)地球科学学院,北京 102249

中国地质大学(北京)能源学院,北京 100083

关键词：

深层—超深层碎屑岩储层成岩作用埋藏方式下白垩统清水河组准噶尔盆地

基金：

国家自然科学基金国家自然科学基金国家自然科学基金国家重点研发计划中国石油-中国石油大学(北京)战略合作科技专项中国石油大学(北京)科研启动基金中国石油大学(北京)科研启动基金

项目编号：

4187211342172109421721082018YFA0702405ZLZX2020-022462020BJRC0022462020YXZZ020

出版年：

2024

DOI：

10.11698/PED.20230529

石油勘探与开发

中国石油天然气股份有限公司勘探开发研究院中国石油集团科学技术研究院

石油勘探与开发

CSTPCD北大核心

影响因子：4.977

ISSN：1000-0747

年,卷(期)：2024.51(2)

参考文献量31