中国石油勘探 ›› 2024, Vol. 29 ›› Issue (5): 120-135.DOI: 10.3969/j.issn.1672-7703.2024.05.010

• 石油地质 • 上一篇    下一篇

准噶尔盆地深层—超深层二叠系碎屑岩储层特征及控制因素

孙靖,尤新才,郑孟林,何文军,常秋生,王韬   

  1. 中国石油新疆油田公司勘探开发研究院
  • 出版日期:2024-09-14 发布日期:2024-09-14
  • 作者简介:孙靖(1982-),男,黑龙江黑河人,硕士,2008年毕业于中国石油大学(北京),高级工程师,现主要从事沉积储层、石油地质基础研究和管理工作。地址:新疆克拉玛依市迎宾路66 号新疆油田公司勘探开发研究院勘探所,邮政编码:834000。
  • 基金资助:
    中国石油天然气集团有限公司重大科技专项课题“深层砾岩规模成藏主控因素分析与富集高产规律研究”(2023ZZ24-01);中国石油天然气股份有限公司“十四五”前瞻性基础性重大科技项目“准噶尔盆地全油气系统地质理论与勘探实践” (2022DJ0108)。

Characteristics and controlling factors of deep and ultra-deep Permian clastic reservoir in Junggar Basin

Sun Jing, You Xincai, Zheng Menglin, He Wenjun,Chang Qiusheng,Wang Tao   

  1. Research Institute of Exploration and Development, Xin jiang Oil field Company, PetroChina
  • Online:2024-09-14 Published:2024-09-14

摘要: 准噶尔盆地深层—超深层二叠系碎屑岩储层近年来连续获得发现和突破,已成为盆地勘探开发的重点领域之一,但其整体发育特征和控制因素尚不明确。利用关键井取心、录井、薄片及分析化验等各项数据和资料,对其储集特征和主要控制因素进行系统分析。研究认为,深层—超深层二叠系碎屑岩储层以三角洲分流河道型砾岩为主,其次为砂岩;砾石成分以凝灰岩为主,胶结物主要为浊沸石和方解石,泥质杂基发育。储集空间以孔隙和裂缝为主,形成了孔隙型、裂缝型和孔隙—裂缝复合型等3种组合;孔隙以次生溶蚀孔隙为主,垂向上形成了3个次生孔隙发育带,裂缝以压实微裂缝为主。岩石成分、成岩作用和地层超压是形成有效储层的主要控制因素,共同控制了深层—超深层二叠系相对有效储层的形成、演化和分布。

关键词: 准噶尔盆地, 深层—超深层, 二叠系, 碎屑岩, 储层特征, 控制因素

Abstract: The deep-ultra deep Permian clastic rock reservoir in the Junggar Basin has been continuously discovered and broken through in recent years, and has become one of the key areas of basin exploration and development, but its overall development characteristics and control factors are still unclear. Coring, logging, thin section analysis and laboratory analysis data of the key wells are used to study and analyze the basic development characteristics and main control factors of its reservoir. This study argued that the deep-ultra deep Permian clastic reservoirs are mainly delta distributary channel conglomerate, followed by sandstone. The gravel is mainly composed of tuff, and the cements are mainly zeolite and calcite, with a well-developed muddy matrix. The storage space is mainly composed of pores and fractures, forming three types of combinations, that are pore, fracture, and pore fracture composite type. The pores are mainly secondary dissolution pores, and three development zones of secondary pores are formed vertically. The cracks are mainly compacted microcracks. The rock composition, diagenesis, and formation overpressure are the main controlling factors for the formation of effective reservoirs, jointly controlling the formation, evolution, and distribution of relatively effective reservoirs in the deep-ultra deep Permian.

Key words: Junggar basin, deep-ultra deep, Permian, clastic reservoir, reservoir characteristics, controlling factor

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