致密储层孔隙结构研究综述

doi:10.11720/wtyht.2022.1190

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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.

Key words： pore structure tight reservoir experimental test well logging

Received: 12 April 2021 Published: 25 February 2022

ZTFLH:

P631.4

Corresponding Authors: LIU Zhi-Di E-mail: 1559572335@qq.com;liuzhidi@xsyu.edu.cn

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	Articles by authors
	Xiu-Juan CHEN
	Zhi-Di LIU
	Yu-Xi LIU
	Hui-Qiang CHAI
	Yong WANG

Cite this article:

Xiu-Juan CHEN,Zhi-Di LIU,Yu-Xi LIU, et al. Research into the pore structure of tight reservoirs:A review[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 22-31.

URL:

https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2022.1190 OR https://www.wutanyuhuatan.com/EN/Y2022/V46/I1/22

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Comparison of capillary pressure curves between high pressure mercury intrusion and constant pressure mercury intrusion^[14]

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Capillary pressure curve of semi-permeable plate^[17]

Capillary pressure curve measured by Centrifuge method

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Six isothermal adsorption lines of IUPAC^[20]

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Neutron scattering diagram^[23]

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Casting thin sections of different cores^[27]

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X-ray CT scanning diagram^[36]

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Cathodoluminescence identification of different rock samples^[40]

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Comparison chart of real core(a) and digital core(b)^[46]

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NMR T₂ spectrum^[52]

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