Shale Reservoir characteristics and influencing factors of Wufeng-Longmaxi formation in Dingshan area, Southeast Sichuan

HE Shun; QIN Qirong; FAN Cunhui; ZHOU Jiling; ZHONG Cheng; HUANG Wei

doi:10.13809/j.cnki.cn32-1825/te.2019.04.012

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Shale Reservoir characteristics and influencing factors of Wufeng-Longmaxi formation in Dingshan area, Southeast Sichuan

更新时间：2025-12-05

- Shale Reservoir characteristics and influencing factors of Wufeng-Longmaxi formation in Dingshan area, Southeast Sichuan
- Petroleum Reservoir Evaluation and Development Issue 4, Pages: 61-67+78(2019)
- 作者机构：
  
  1. 西南石油大学油气藏地质及开发工程国家重点实验室,四川,成都,610500
  2. 四川省页岩气资源与环境协同创新中心,四川,成都,610500
  3. 中国石油西南油气田分公司,四川,成都,629000
- 作者简介：
- 基金信息：
- DOI：10.13809/j.cnki.cn32-1825/te.2019.04.012
  CLC： 618.13
- Published：2019
- 稿件说明：
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HE Shun, QIN Qirong, FAN Cunhui, et al. Shale Reservoir characteristics and influencing factors of Wufeng-Longmaxi formation in Dingshan area, Southeast Sichuan[J]. Petroleum Reservoir Evaluation and Development, 2019, (4): 61-67+78.
DOI：

HE Shun, QIN Qirong, FAN Cunhui, et al. Shale Reservoir characteristics and influencing factors of Wufeng-Longmaxi formation in Dingshan area, Southeast Sichuan[J]. Petroleum Reservoir Evaluation and Development, 2019, (4): 61-67+78. DOI： 10.13809/j.cnki.cn32-1825/te.2019.04.012.

摘要

川东南丁山地区五峰—龙马溪组页岩勘探潜力巨大

明确页岩储层特征及其控制因素具有重要意义。通过全岩"X"衍射和Maps显微扫描对页岩矿物组分及微观孔隙结构进行分析

对页岩矿物组成、储集空间类型、孔隙度、渗透率及其控制因素进行研究

从沉积环境和构造运动两方面剖析储层发育控制因素。结果表明

丁山地区页岩储层具备有机质高、脆性矿物含量高的特点

孔隙直径发育范围在10～100 nm

不同层段孔隙度、渗透率等物性参数不一

下部6～9小层孔隙度和渗透率高

裂缝和页理发育处渗透率出现陡增现象。储层发育受沉积和构造运动的双重影响

沉积环境是页岩储层形成的基础

与埋藏演化共同决定原生储集空间的发育

后期构造运动对储集空间组成和结构进行改造

一方面微裂缝增加储集空间和渗流能力

另一方面

过于发育的裂缝破坏储层的有效性。

Abstract

The shale exploration potential of Wufeng-Longmaxi formation in Dingshan area of southeastern Sichuan is huge

and it is important to clarify the characteristics of shale reservoirs and their controlling factors. Through the “X” diffraction and Maps microscopic scanning of the whole rock

the shale mineral composition and microscopic pore structure were analyzed

and the shale mineral composition

reservoir space type

porosity

permeability and its controlling factors were studied. Then the sedimentary environment and tectonic movements was used to analyze reservoir development control factors. The results showed that the shale reservoirs in the Dingshan area were characterized by high organic matter and high brittle mineral content. The pore diameter development range was between 10 nm and 100 nm. The physical parameters such as porosity and permeability of different intervals were different. The porosity and permeability of the small layer 6~9 in lower part were high

and the permeability of cracks and phylogenetic development steeply increased. Reservoir development was affected by both sedimentary and tectonic movements. The sedimentary environment was the basis for the formation of shale reservoirs. Together with the burial evolution

the development of the primary reservoir space was determined. The later tectonic movements transformed the composition and structure of the reservoir space. On one hand

the micro fractures increased the reservoir space and seepage capacity

and on the other hand

the overdeveloped cracks destroyed the effectiveness of the reservoir.

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references

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