Research into the pore structure of tight reservoirs:A review

CHEN Xiu-Juan; LIU Zhi-Di; LIU Yu-Xi; CHAI Hui-Qiang; WANG Yong

doi:10.11720/wtyht.2022.1190

2022 Vol. 46, No. 1

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CHEN Xiu-Juan, LIU Zhi-Di, LIU Yu-Xi, CHAI Hui-Qiang, WANG Yong. 2022. Research into the pore structure of tight reservoirs:A review. Geophysical and Geochemical Exploration, 46(1): 22-31. doi: 10.11720/wtyht.2022.1190

Citation:

CHEN Xiu-Juan, LIU Zhi-Di, LIU Yu-Xi, CHAI Hui-Qiang, WANG Yong. 2022. Research into the pore structure of tight reservoirs:A review. Geophysical and Geochemical Exploration, 46(1): 22-31. doi: 10.11720/wtyht.2022.1190

Research into the pore structure of tight reservoirs:A review

1. College of the Geoscience and Engineering,Xi'an Shiyou University,Xi'an 710065,China;
2. Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi'an Shiyou University,Xi'an 710065,China;
3. Longdong Department of Shale Oil Development Project in Changqing Oilfield,PetroChina,Qingyang 745000,China

Received Date: 12 April 2021

Revised Date: 20 February 2022

Publish Date: 25 February 2022

Abstract

Abstract

With the increasing demand for oil and gas resources,the exploration and development of oil and gas fields have shifted from conventional to unconventional fields,and tight oil and gas reservoirs have become the current and future focus of the exploration and development of unconventional oil and gas.Most of the tight reservoirs in China are continental sediments with poor lateral continuity,strong vertical heterogeneity,complex lithology,and large changes in physical properties.All these make it difficult to effectively characterize the pore structure of tight reservoirs.The pore structure of reservoirs not only affects the occurrence of oil and gas but also seriously restricts the seepage and efficient exploitation of oil and gas.To analyze the pore structure characteristics of tight reservoirs in a targeted manner,this study systematically investigates relevant literature on the assessment methods of pore structure of tight reservoirs and organizes indirect measurement methods such as semi-permeable plate,direct observation methods such as casting thin sections,and digital core method.Moreover,it dissects the logging-based assessment methods of the pore structure of tight reservoirs,explores the applicability,advantages,and disadvantages of these methods,and further proposes the development trend of pore structure study based on the current status.
- pore structure /
- tight reservoir /
- experimental test /
- well logging

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References

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