西南石油大学学报(自然科学版) ›› 2022, Vol. 44 ›› Issue (1): 53-65.DOI: 10.11885/j.issn.1674-5086.2020.02.22.01

• 地质勘探 • 上一篇    下一篇

黄陵地区延长组长6段深水砂岩储层特征分析

杨莎莎1, 黄旭日2, 贾继生3, 武志学3, 李伟华4   

  1. 1. 西京学院土木工程学院,陕西 西安 710123;
    2. 西南石油大学地球科学与技术学院,四川 成都 610500;
    3. 咸阳川庆鑫源工程技术有限公司,陕西 西安 710018;
    4. 中国石油长庆油田分公司勘探开发研究院,陕西 西安 710018
  • 收稿日期:2020-02-22 发布日期:2022-01-25
  • 通讯作者: 杨莎莎,E-mail:515374102@qq.com
  • 作者简介:杨莎莎,1988年生,女,汉族,陕西西安人,副教授,博士,主要从事沉积学、储层地质学方面的研究工作。E-mail:515374102@qq.com;
    黄旭日,1965年生,男,汉族,广西灵川人,教授,博士,博士生导师,主要从事储层描述、油藏地球物理方面的研究工作。E-mail:xrhuang@sunrisepst.com;
    贾继生,1983年生,男,汉族,甘肃镇原人,工程师,主要从事油气田开发地质及油气井压裂酸化方面的研究工作。E-mail:jiajisheng@cnpc.com.cn;
    武志学,1978年生,男,汉族,甘肃武威人,工程师,主要从事油气田开发地质方面的研究。E-mail:wuzhixue@cnpc.com.cn;
    李伟华,1982年生,男,汉族,甘肃庆城人,工程师,主要从事油田开发等方面的研究工作。E-mail:liwh_cq@petrochina.com.cn
  • 基金资助:
    国家科技重大专项(2016ZX05046)

An Analysis on the Characteristics of Deepwater Sandstone Reservior of Chang 6 Member, Yanchang Formation in Huangling Area

YANG Shasha1, HUANG Xuri2, JIA Jisheng3, WU Zhixue3, LI Weihua4   

  1. 1. School of Civil Engineering, Xijing University, Xi′an, Shaanxi 710123, China;
    2. School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    3. Xianyang Chuanqing Xinyuan Engineering Technology Co. Ltd., Xi′an, Shaanxi 710018, China;
    4. Research Institute of Exploration and Development, Changqing Oilfield Company, PetroChina, Xi′an, Shaanxi 710018, China
  • Received:2020-02-22 Published:2022-01-25

摘要: 以鄂尔多斯盆地黄陵地区延长组长6段为研究对象,基于区内丰富的钻井取芯、测录井及分析化验资料,对长6段深水砂岩特征及不同砂体类型储层之间的差异性进行了分析。结果表明,根据砂体形成机制及其构造特征的不同,研究区砂体类型可划分为砂质碎屑流砂体、砂质滑塌砂体及浊流砂体3大类。其中,砂质碎屑流砂体的石英、长石含量及结构成熟度相对较高,储集空间以长石溶孔和残余粒间孔为主,储层物性也明显优于其他两类砂体。进一步分析发现,由于结构成熟度和矿物含量的差异,砂质碎屑流砂体成岩早期抗压实压溶作用更强,中晚期易溶矿物溶蚀增孔、构造破裂增缝等建设性成岩作用也较为强烈,从而决定了砂质碎屑流砂体是研究区最有利的储集岩体。

关键词: 延长组长6段, 深水沉积, 砂质碎屑流砂体, 储层特征, 储层差异性分析

Abstract: Taking the Chang 6 Member of the Yanchang Formation in Huangling Area of the Ordos Basin as the research object, the characteristics of the deep water sandstone of Chang 6 Member and the differences between different types of sand bodies are analyzed based on the abundant drilling and coring, logging and analysis of laboratory data. The results show that the reservoir rock types in the study area can be divided into three categories: sandy debris flow sand body, sandy slumping sand body and turbidite sand body according to their formation mechanism and structural characteristics. Among them, the content of quartz and feldspar and structural maturity in sandy debris flow sand body are relatively higher. The storage space is dominated by residual intergranular pores and feldspar dissolved pores. The physical properties of the reservoir are also significantly higher than those of the other two types of sand bodies. Further analysis found that due to the difference in structural maturity and mineral content, the compaction and dissolution of sandstone debris flow sand body is stronger in the early stage of diagenesis, and in the middle and late stages, soluble minerals increases pores and rupture increased fractures. It is determined that sandy debris flow sand bodies are the most favorable type of reservoir rock in the study area.

Key words: Chang 6 Member of Yanchang Formation, deep water deposition, sandy debris flow sand body, reservoir characteristics, analysis of reservoir difference

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