Journal of Palaeogeography(Chinese Edition) ›› 2026, Vol. 28 ›› Issue (1): 290-303. doi: 10.7605/gdlxb.2026.039

• MINERAL RESOURCES AND NEW ENERGY GEOLOGY • Previous Articles     Next Articles

Study on characteristics and differences of sandstone reservoirs with different source rock properties: an example from the Lower Jurassic in piedmont area of southwestern Tarim Basin

SUN Chunyan1,2,3(), SUO Yihu4,5, LUO Qiang1,2,3, CUI Hang4,5, LIU Chang1,2,3, ZHU Shifa4,5(), ZHANG Fei1,2,3   

  1. 1 Research Institute of Exploration and Development, Tarim Oilfield Company,PetroChina,Xingjiang Korla 841000,China
    2 R & D Center for Ultra-Deep Complex Reservoir Exploration and Development,CNPC,Xingjiang Korla 841000,China
    3 Engineering Research Center for Ultra-deep Complex Reservoir Exploration and Development,Xinjiang Uygur Autonomous Region,Xingjiang Korla 841000,China
    4 National Key Laboratory of Petroleum Resources and Engineering,China University of Petroleum(Beijing),Beijing 102249,China
    5 College of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China
  • Received:2024-10-08 Revised:2025-09-27 Online:2026-02-01 Published:2026-02-09
  • Contact: ZHU Shifa,born in 1982,is a Ph.D. supervisor and professor.He is mainly engaged in teaching and researches on reservoir geology and sedimentology. E-mail: zhushifa_zsf@163.com.
  • About author:

    SUN Chunyan,born in 1988,is a PhD and a senior engineer,is engaged in geological exploration and research work. E-mail: .

  • Supported by:
    Xinjiang Major Science and Technology Project(2025A01009); Science and Technology Project of China National Petroleum Corporation“Oil and gas distribution and zone target optimization of ultra-deep clastic rock”(2023ZZ14YJ02)

不同母岩性质砂岩储集层特征及差异研究: 以塔西南山前下侏罗统为例*

孙春燕1,2,3(), 索义虎4,5, 罗强1,2,3, 崔航4,5, 刘畅1,2,3, 朱世发4,5(), 张飞1,2,3   

  1. 1 塔里木油田分公司勘探开发研究院,新疆库尔勒 841000
    2 中国石油天然气集团有限公司超深层复杂油气藏勘探开发技术研发中心,新疆库尔勒 841000
    3 新疆维吾尔自治区超深层复杂油气藏勘探开发工程研究中心,新疆库尔勒 841000
    4 油气资源与工程全国重点实验室,中国石油大学(北京),北京 102249
    5 中国石油大学(北京)地球科学学院,北京 102249
  • 通讯作者: 朱世发,男,1982年生,博士,教授,主要从事储集层地质学与沉积学的教学与科研工作。E-mail: zhushifa_zsf@163.com
  • 作者简介:

    孙春燕,女,1989年生,博士,高级工程师,从事地质勘探研究工作。E-mail:

  • 基金资助:
    *新疆维吾尔自治区重大科技专项(2025A01009); 中国石油天然气集团有限公司科技项目“超深层碎屑岩油气分布规律与区带目标优选”(2023ZZ14YJ02)

Abstract:

The braided river delta sandbodies containing coal developed in the Lower Jurassic in the piedmont southwestern Tarim Basin,the overall exploration level is relatively low,with significant differences in the properties of source rocks and reservoir characteristics in different regions,which in turn restricts the oil and gas exploration process. This article takes the sandy reservoirs of the Lower Jurassic in the Fusha and Aketao regions as examples,and fully utilizes various rock and mineral testing and analysis methods to analyze the differences in the properties of the parent rock and reservoirs. The results show that the source rocks in the Fusha area are mainly Early Proterozoic metamorphic rocks. The reservoir exhibits characteristics of “poor feldspar and rich metamorphic rock debris”(Q57.3F4.8R37.9),and the high content of plastic debris leads to strong burial compaction in the later stage,with a compaction reduction of up to 20.11%. Late cementation and dissolution were weak. The reservoir space is a small amount of residual primary pores,and the current porosity is only 8.98%. Aketao area is the Late Paleozoic-Triassic extrusive rock,and the reservoir exhibits the characteristics of “rich feldspar and extrusive rock debris”(Q33.2F17.5R49.3). The Compaction is weak,and the early cementation is strong,The high content of soluble components and the influence of organic acids lead to strong dissolution,with a dissolution pore increase of 4.03%. The development of intergranular and intragranular dissolution pores improves the reservoir quality,and the current porosity is 12.95%. Comprehensive research suggests that the properties of the parent rock lead to differences in the petrological characteristics,diagenetic intensity,diagenetic evolution sequence,reservoir space types,and pore evolution processes of the Lower Jurassic sandstone reservoirs in the piedmont southwestern Tarim Basin. This study provides theoretical support for the prediction of high-quality sandstone reservoirs in the Jurassic period in the piedmont southwestern Tarim Basin.

Key words: piedmont area of southwestern Tarim Basin, Lower Jurassic, reservoir differences, source rock properties

摘要:

塔西南山前下侏罗统发育含煤的辫状河三角洲砂体,整体勘探程度较低,不同地区母岩性质和储集层特征差异较大,严重制约着油气勘探进程。本研究以甫沙地区和阿克陶地区下侏罗统砂岩储集层为例,充分利用各种岩矿测试分析手段对母岩性质和储集层差异性进行分析。 结果表明: 甫沙地区母岩主要为早元古界变质岩,储集岩表现为“贫长石、富变质岩岩屑”(Q57.3F4.8R37.9)的特点,塑性岩屑含量高的特征导致后期埋藏压实作用强,压实减孔量高达20.11%,晚期胶结和溶蚀作用弱,储集空间为少量剩余原生孔隙,现今孔隙度仅为8.98%;阿克陶地区母岩主要为晚古生代—三叠系喷出岩,储集岩表现为“富长石和喷出岩岩屑”(Q33.2F17.5R49.3)的特点,压实作用较弱,早期胶结作用强,易溶组分含量高加之有机酸影响导致溶蚀作用强,溶蚀增孔量为4.03%,粒间和粒内溶孔的发育改善了储集层质量,现今孔隙度为12.95%。综合研究认为,母岩性质导致塔西南山前下侏罗统砂岩储集层岩石学特征、成岩作用强度和成岩演化序列、储集空间类型和孔隙演化过程存在差异。本次研究为塔西南山前侏罗系优质砂岩储集层的预测提供理论支撑。

关键词: 塔西南山前, 下侏罗统, 储集层差异, 母岩性质

CLC Number: