Study on the pore evolution of Xinjiang oil shale under pyrolysis based on joint characterization of LNTA and MIP

被引：0
作者：
Zhijun Liu
Haotian Ma
Zhen Wang
Gang Liu
Yuzhen Guo
机构：
[1] Heilongjiang University of Science and Technology,College of Mining Engineering
[2] Heilongjiang University of Science and Technology,Heilongjiang Ground Pressure and Gas Control in Deep Mining Key Laboratory
[3] Gotion High-tech Co.,Hefei Guoxuan Battery Co., Ltd.
[4] Ltd.,undefined
来源：
Geomechanics and Geophysics for Geo-Energy and Geo-Resources | 2023年 / 9卷
关键词：
Oil shale; Nitrogen adsorption; Mercury injection; Pore structure; Joint characterization;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
During the in-situ exploitation of oil shale, the evolution of pore structure will affect the heat transfer medium and the transport capacity of products. In this study, using the oil shale from Jimsar region of Xinjiang, in combination with the low-temperature nitrogen adsorption experiment (LNTA) and high-pressure mercury injection experiment (MIP), the effect of temperature on evolution law of its pores during pyrolysis were analyzed according to the LNTA and MIP joint characterization results. The results show as follows: the change curve of oil shale porosity with pyrolysis final temperature in Xinjiang shows an “S” shape. The pore volume increases slightly before 300 °C, and it shows an increasing trend in the subsequent temperature range, with the mesopore volume change being the most noticeable. However, the increase slows down after 600 °C. The evolution of full-scale pores in the pyrolysis process of oil shale is reflected by the joint characterization of LNTA and MIP, which indicates that the temperature has a controlling effect on the evolution of pore, and provides basic theoretical support for how to improve the oil recovery rate of exploitation of oil shale.
引用
收藏
相关论文
共 106 条
  • [1] Bai F(2017)Evaluation of the porous structure of Huadian oil shale during pyrolysis using multiple approaches Fuel 187 1-8
  • [2] Sun Y(2013)Petrophysical characterization of Chinese coal cores with heat treatment by nuclear magnetic resonance Fuel 108 292-302
  • [3] Liu Y(2013)Pore structure characterization of North American shale gas reservoirs using USANS/SANS, gas adsorption, and mercury intrusion Fuel 103 606-616
  • [4] Cai Y(2006)Change of pore structure of oil shale particles during combustion. Part 1. Evolution mechanism Energy Fuels 20 2408-2412
  • [5] Liu D(2014)Comparisons of pore size distribution: a case from the Western Australian gas shale formations J Unconv Oil Gas Resour 8 1-13
  • [6] Pan Z(2011)Thermal cracking and corresponding permeability of Fushun oil shale Oil Shale 28 273-283
  • [7] Clarkson C(2013)Specific surface area and pore-size distribution in clays and shales Geophys Prospect 61 341-362
  • [8] Solano N(2016)Secondary reactions in oil shale pyrolysis by solid heat carrier in a moving bed with internals Fuel 173 138-145
  • [9] Bustin R(2009)World progress of oil shale in-situ exploitation methods Nat Gas Ind 29 128-132
  • [10] Han X(2014)TG–DSC analysis of pyrolysis process of two Chinese oil shales J Therm Anal Calorim 116 511-517
12345678910