scholarly journals Manifestation of coupled mechanical and chemical effects in experimental studies of changes in elastic properties, porosity and permeability of reservoir rocks under the influence of filtration of water saturated with carbon dioxide

2021 ◽  
pp. 3-14
Author(s):  
S.N. Popov
Keyword(s):  
Carbon Dioxide ◽  
Elastic Properties ◽  
Experimental Studies ◽  
Dissolved Carbon ◽  
Reservoir Rocks ◽  
Chemical Effects ◽  
Dissolved Carbon Dioxide ◽  
Influence Of Water ◽  
Porosity And Permeability ◽  
Water Saturated

The article provides an overview of publications devoted to laboratory studies of the effect of water saturated with carbon dioxide on the porosity, permeability and elastic properties of reservoir rocks. The main chemical reactions of the interaction of dissolved carbon dioxide with rock minerals are presented. A significant change in the modulus of elasticity, modulus of volumetric compression, porosity and permeability of core samples under the influence of water saturated with carbon dioxide is shown.

THE EFFECT OF ASPHYXIATION UNDER VARIOUS TENSIONS OF CARBON DIOXIDE ON THE SWIM BLADDER GASES OF SOME FRESHWATER FISH

1942 ◽  
Vol 20d (7) ◽  
pp. 209-219 ◽  
Author(s):  
Virginia Safford Black
Keyword(s):  
Carbon Dioxide ◽  
Gas Exchange ◽  
Freshwater Fish ◽  
Bladder Wall ◽  
Swim Bladder ◽  
Vascular Networks ◽  
Pumpkin Seed ◽  
Dissolved Carbon ◽  
Dissolved Carbon Dioxide ◽  
Water Saturated

Freshwater physostomous fish, possessing open swim bladders (dace, sucker, chub, bullhead, trout), and physoclistous fish, having closed swim bladders (perch, bass, pumpkin-seed, stickleback), were sealed in bottles of water saturated with air and containing various amounts of dissolved carbon dioxide. After asphyxiation, an analysis of the swim bladder gases showed that the swim bladder had gained some carbon dioxide and lost some oxygen. Fish with closed swim bladders possessing retia mirabilia and ovals, vascular networks that facilitate gas exchange, show a markedly greater exchange of gases during the experiments than fish with open swim bladders which have no intensely vascular regions on the swim bladder wall. The oxygen that leaves the swim bladder during asphyxiation is probably of no significant value to the fish for respiration.

Impact of Dursban and Abate on Microbial Numbers and Some Chemical Properties of Standing Ponds

1975 ◽  
Vol 10 (1) ◽  
pp. 33-41 ◽  
Author(s):  
J. Butcher ◽  
M. Boyer ◽  
CD. Fowle
Keyword(s):  
Carbon Dioxide ◽  
Active Ingredient ◽  
Algal Blooms ◽  
Chemical Properties ◽  
Total Carbon ◽  
Dissolved Carbon ◽  
Photosynthetic Productivity ◽  
Dissolved Carbon Dioxide ◽  
Microbial Numbers

Abstract Eleven small ponds, lined with polyethylene, were used to assess the consequences of applications of *DursbanR at 0.004, 0.030, 0.100 and 1.000 ppm and AbateR at 0.025 and 0.100 ppm active ingredient. The treated ponds showed a more pronounced long-term increase in pH and dissolved oxygen and decreasing total and dissolved carbon dioxide in comparison with untreated ponds. Algal blooms were of longer duration in treated ponds than in controls. Total photosynthetic productivity was higher in treated ponds but bacterial numbers did not change significantly. Photosynthetic productivity was estimated by following the changes in total carbon dioxide.

scholarly journals FORMATION CONDITIONS OF GROUNDWATER OF THE UPPER JURASSIC OF THE CENTRAL REGIONS OF THE ZAURAL MEGAMONOCLYSIS

2021 ◽  
Vol 2 (1) ◽  
pp. 181-190
Author(s):  
Dmitry A. Novikov ◽  
Aleksandr N. Pyrayev ◽  
Fedor F. Dultsev ◽  
Anatoliy V. Chernykh ◽  
Svetlana V. Bakustina ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Isotopic Composition ◽  
Upper Jurassic ◽  
Biogenic Origin ◽  
Dissolved Carbon ◽  
Dissolved Carbon Dioxide ◽  
Oxygen And Hydrogen Isotopes ◽  
Central Regions ◽  
First Results ◽  
Formation Conditions

The article presents the first results of complex isotope-hydrogeochemical studies of reservoir waters of the Upper Jurassic deposits of the central regions of the Zaural megamonoclysis. It was shown that most waters have a narrow distribution of oxygen and hydrogen isotopes (δD from -103.2 to -85.6 ‰ and δO from -15.4 to -12.9 ‰). Some of them have pronounced excursions on the isotopic composition, which indicates a difference in their genesis: from condensate to mixed with ancient infiltrogenic. The isotopic composition of carbon of water-dissolved carbon dioxide (δС from -41.6 to -16.3 ‰) indicates its biogenic origin and the possibility of interstratal flows from overlying horizons.

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