Study on solubility and solubilisation of drying agent in supercritical carbon dioxide for improving local permeability of tight gas reservoir

2019 ◽  
Vol 118 (1) ◽  
pp. e1580780
Author(s):  
Yu Xiong ◽  
Xitong Fu ◽  
Jun Mo ◽  
Liehui Zhang
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Tight Gas ◽  
Gas Reservoir ◽  
Tight Gas Reservoir ◽  
Local Permeability ◽  
Supercritical Carbon

Study on Supercritical Carbon Dioxide Fracturing Coalbed Gas Method

2013 ◽  
Vol 807-809 ◽  
pp. 2529-2533 ◽  
Author(s):  
Ying Xin Zhang ◽  
Peng Fei Wang ◽  
Jie Yang ◽  
Guang Qi Li
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Coal Seam ◽  
Gas Production ◽  
Reflection Effect ◽  
Gas Reservoir ◽  
Coalbed Gas ◽  
The Difference ◽  
Coal Reservoir ◽  
Supercritical Carbon

The difference between coal reservoir and conventional natural gas reservoir leads to difficulty for fracturing coal seam, also extremely low permeability in coal seam affects seriously the coalbed gas production. However, supercritical carbon dioxide has unique properties that promote pores and cracks, improve coal seam permeability and replace of CH4 in coal and rock seam. This paper researches on fracturing principle, generational capacity and carrying capacity, anti-reflection effect. At the sametime, based on the problem of change permeability in coal seam, the paper also analyes characteristics of coal reservoir and coalbed gas and combines with properties of supercritical carbon dioxide, which points out the feasibility and necessity that using supercritical carbon dioxide as fracturing carrier in coalbed gas exploitation realizes anti-reflection and increasing production.

Simulation of Supercritical Carbon Dioxide Fracturing in Shale Gas Reservoir

2021 ◽  
Vol 30 (4) ◽  
pp. 1444-1451
Author(s):  
Weiqiang Song ◽  
Hongjian Ni ◽  
Peng Tang ◽  
Shichuan Zhang ◽  
Jichao Gao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Shale Gas ◽  
Gas Reservoir ◽  
Shale Gas Reservoir ◽  
Supercritical Carbon
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