Evaluation Shale Pore Size Spectrum Using Mercury Porosimetry and Nitrogen Adsorption Experiment: A Case Study from the Longtan Formation Shale, Southeastern Hunan, China

2014 ◽  
Vol 962-965 ◽  
pp. 34-40
Author(s):  
Ning Yang ◽  
Shu Heng Tang ◽  
Song Hang Zhang ◽  
Jun Jie Yi
Keyword(s):  
Pore Structure ◽  
Parallel Plate ◽  
Mercury Porosimetry ◽  
Nitrogen Adsorption ◽  
Size Spectrum ◽  
Adsorption Experiment ◽  
Structure Characteristics ◽  
Gas Shales ◽  
Strong Ability

Gas shales have a complex pore structure. Using mercury porosimetry and nitrogen adsorption experiment on shale of Longtan Formation in southeastern of Hunan, the pore structure characteristics were contrast analyzed, influencing factors and its impact on reservoir-forming were discussed. Longtan Formation shale is composed of nanopores, include the cylinder pores with two ends open and parallel-plate pores with four sides open. The efficiency of mercury ejection ranges 31.45%~63.82%, 51.94% on average, pores uniformity is well. The size of nanopores is 5~30nm, taking up 94.74% of the total volume and 98.08% of specific surface area. Brittle minerals content is high, as an important parameter influencing pore development. The nanopores have a strong ability to absorb gas, methane molecule exist in a structured way.

Variation in Pore Structure Characteristics with Composition in the High Volatile Bituminous Coal of Binchang Area

2014 ◽  
Vol 962-965 ◽  
pp. 890-898
Author(s):  
Jin Ping Li ◽  
Da Zhen Tang ◽  
Ting Xu Yu ◽  
Gang Sun
Keyword(s):  
Low Temperature ◽  
Pore Structure ◽  
Parallel Plate ◽  
Bituminous Coal ◽  
Nitrogen Adsorption ◽  
Bet Surface Area ◽  
Test Results ◽  
Structure Characteristics ◽  
Desorption Isotherms ◽  
Adsorption Desorption

Pore structure characteristics and the effect of lithotype and maceral on pore for three types of high-volatile bituminous coals from Binchang area were investigated by combined low-temperature nitrogen adsorption/desorption, nuclear magnetic resonance (NMR), scanning electron microscope (SEM) and maceral analysis. The low temperature N2 adsorption/desorption test results show that: micropores are more abundant than transitional pores with high BET surface area; two types of pore structures can be identified by adsorption/desorption isotherms; Pore morphology is mainly represented by well-connected, ink-bottled, cylindrical and parallel plate pores. NMR T2 distributions at full saturated condition are apparent or less obvious trimodal and three types of T2 distributions are identified; Seepage pores are better developed when compared with the middle-high rank coal. Further research found that the three coal lithotypes are featured by remarkably different pore structure characteristics and maceral contents of coal are linearly correlated to some of pore structure parameters.

scholarly journals Study on Pore Structure and Sulfur Fixation Characteristics of Alkali Industrial Waste

2011 ◽  
Vol 194-196 ◽  
pp. 716-721 ◽  
Author(s):  
Gai Ju Zhao ◽  
Feng Jiao Yin ◽  
Jie Li ◽  
Xuan You Li
Keyword(s):  
Pore Structure ◽  
Significant Contribution ◽  
Mercury Porosimetry ◽  
Structure Characteristics ◽  
Initial Stage ◽  
Effective Aperture ◽  
Higher Temperature ◽  
Lower Temperature ◽  
Sulfur Fixation ◽  
Calcium Utilization

Pore structure of experiment alkali waste were investigated by Mercury Porosimetry, the influence of pore structure characteristics on their sulfur fixation performance were discussed, it can be found that little pores make a significant contribution to calcium utilization in the initial stage of reaction and at lower temperature, while bigger pores take effect in the later stage and at higher temperature, the range of effective aperture are different at different temperature, which respectively are from 0.005μm to 0.02μm at temperature from 1123K to 1223K and from 0.2μm to 0.3μm at temperature from 1223K to 1323K, the more pore in range of effective aperture, the better the sulfur fixation performance.

Effect of Silica Nanofluid on Nanoscopic Pore Structure of Low-Permeability Petroleum Reservoir by Nitrogen Adsorption Technique: A Case Study

2019 ◽  
Vol 44 (6) ◽  
pp. 6167-6178
Author(s):  
Caspar Daniel Adenutsi ◽  
Zhiping Li ◽  
Zhichao Xu ◽  
Anthony Edem Hama ◽  
Lili Sun ◽  
...  
Keyword(s):  
Pore Structure ◽  
Nitrogen Adsorption ◽  
Low Permeability ◽  
Petroleum Reservoir
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