Determination of the stable isotope composition and total dissolved solids of Athabasca oil sands reservoir porewater: Part 1. A new tool for aqueous fluid characterization in oil sands reservoirs

AAPG Bulletin ◽  
2014 ◽  
Vol 98 (10) ◽  
pp. 2131-2141 ◽  
Author(s):  
Benjamin R. Cowie ◽  
Bruce James ◽  
Michael Nightingale ◽  
Bernhard Mayer
Keyword(s):  
Stable Isotope ◽  
Oil Sands ◽  
Isotope Composition ◽  
Aqueous Fluid ◽  
Total Dissolved Solids ◽  
Stable Isotope Composition ◽  
Athabasca Oil Sands ◽  
Dissolved Solids ◽  
Fluid Characterization

Natural temporal variations in the chemistry of shallow groundwater, Athabasca Oil Sands area, Alberta

1981 ◽  
Vol 18 (10) ◽  
pp. 1599-1608 ◽  
Author(s):  
Douglas A. Hackbarth
Keyword(s):  
Coefficient Of Variation ◽  
Oil Sands ◽  
Shallow Groundwater ◽  
Temporal Variations ◽  
Total Dissolved Solids ◽  
Early Summer ◽  
Athabasca Oil Sands ◽  
Dissolved Solids ◽  
Dissolved Carbon ◽  
Pattern Of Variation

Significant natural variation of the chemistry of shallow groundwater was observed from 1977 through 1979 in three wells located in the Athabasca Oil Sands area, Alberta. The wells are between 5 and 8 m deep and are located in boreal forest far from any direct influence by man.The coefficient of variation of total dissolved solids for the well sampled monthly for 35 months was 34%, while those for the two wells sampled bi-monthly were 21 and 11%. The coefficient of variation for individual constituents was generally higher than the above values.An annual pattern of variation in shallow groundwater chemistry is recognized. Calcium, magnesium, and bicarbonate reach lowest annual concentration in the spring and rise rapidly by early summer. Concentration of these ions gradually decreases through fall and winter. This cycle is related to the abundance of dissolved carbon dioxide in recharge water and is controlled to a great extent by the abundant muskeg.Spring and fall are typically times of highest sulfate concentrations. This is coincident with recharge events and is related to leaching of sulfur compounds. High chloride during winter is related to slower rates of groundwater flow and the consequent increased opportunity for release of ions from chloride-bearing minerals.Information from other wells in the Athabasca Oil Sands area indicates that the coefficient of variation of total dissolved solids with respect to time generally decreases with depth. Coefficients of variation might be expected to be as high as 35% at depths of 10 m; the range declines to a relatively constant 4% at depths greater than 150 m.

scholarly journals Radiocarbon dating of groundwater from a PZ-2 piezometer located in the foreground of Wieliczka Salt Mine, Poland

Geologos ◽  
2019 ◽  
Vol 25 (3) ◽  
pp. 187-192
Author(s):  
Marek Duliński ◽  
Zbigniew Gorczyca ◽  
Michał Marzec ◽  
Robert Czub ◽  
Krzysztof Brudnik
Keyword(s):  
Stable Isotope ◽  
Radiocarbon Dating ◽  
Additional Data ◽  
Isotope Composition ◽  
Age Determination ◽  
Salt Mine ◽  
Stable Isotope Composition ◽  
Radiocarbon Age

Abstract A comparison of two methods of radiocarbon age determination of groundwater is presented. The simplest Pearson model and the “user-defined” option of the NETPATH program were considered. Both methods were used to determine the age of water from a PZ-2 piezometer that is situated in the foreground of chamber Z-32 in Wieliczka Salt Mine. Results of these calculations clearly demonstrate that 14C ages obtained by the Pearson model can be significantly overestimated in comparison with those determined by the NETPATH code. Without additional data, such as the stable isotope composition of the water, conclusions on the age of the groundwater based solely on the Pearson model may be highly inadequate.

Determination of both chemical and stable isotope composition in milligramme-size carbonate samples

1989 ◽  
Vol 65 (3-4) ◽  
pp. 233-238 ◽  
Author(s):  
Max L. Coleman ◽  
J.Nick Walsh ◽  
Richard A. Benmore
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Stable Isotope Composition

scholarly journals Chemical and stable isotope composition of surface and groundwater in the surroundings of the Los Humeros Caldera, Puebla, Mexico

2019 ◽  
Vol 98 ◽  
pp. 07013
Author(s):  
Thomas Kretzschmar ◽  
Matteo Lelli ◽  
Ruth Alfaro ◽  
Juan Ignacio Sanchez ◽  
Yann Rene Ramos
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Regression Line ◽  
Sustainable Use ◽  
Geothermal Reservoir ◽  
Maximum Temperature ◽  
Stable Isotope Composition ◽  
Local Fracture ◽  
Hydrogeological Model ◽  
Fracture Systems

It is important to develop a regional hydrogeological model to identify possible recharge and discharge areas for a sustainable use of a geothermal reservoir. The Los Humeros geothermal area is situated within five surficial watersheds and coveres an area of more than 15.000 km2. A total of 208 well and spring samples were collected between June 2017 and November 2018. The stable isotope data for this region define a regression line of δDH2O = 8.032·δ18O + 12 and indicate that groundwater is recharged by regional precipitation. At least 39 groundwater wells, with a maximum temperature of 35 °C, show temperatures above the reported mean average surface temperature of 15 °C. Characteristic elements for geothermal reservoir fluids (B, Li, As) are also present in these groundwaters, indicating a possible connection between the reservoir fluid and the local groundwater through local fracture systems. Concentration of B in these hot wells is between 150 and 35000 ppb.

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