Pollution of near-surface zone in the vicinity of gas wells

Sechman, Henryk; Mościcki, W.; Dzieniewicz, M.

doi:10.1016/j.geoderma.2013.01.012

Cited by 16 publications

(11 citation statements)

References 22 publications

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“…It is broadly used in geomorphology (Schrott & Sass 2008), engineering (Daily & Ramirez 2000), archaeology (Cardarelli 2002, Mościcki 2008) and environmental studies (Dahlin et al 1996, Amidu & Dunbar 2008, Georgaki et al 2008, Sechman et al 2013). Generally, a 2D variant is performed.…”

Section: Introductionmentioning

confidence: 99%

2D Electrical Resistivity Tomography interpretation ambiguity - example of field studies supported with analogue and numerical modelling

Bania¹,

Ćwiklik²

2013

geol

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Single Electrical Resistivity Tomography (ERT) survey was carried out in the Manor and Park Complex in Nowa Huta (Krakow Branice, Poland). It was applied at a small distance and parallel to the longer wall of a monumental building containing an empty 3 m deep basement. Analogue modelling was performed in order to recreate the field study at the proper scale. The laboratory set-up consisted of a water tank where electrodes were mounted to the particular plate, which rested on water surface. The basement model was made out of a non-conducting material. The default and robust inversions were tested and these variants were also considered with the use of numerical modelling. Laboratory experiments have confirmed that zones visible in the interpreted field section are caused by the influence of the building cellar located next to the survey line. Zones of this kind are additionally disturbed by the local geological structure. The experiment has pointed out, among others, that as the distance between the survey line and the underground body increases, the inversion results are still burdened by an object influence. Thus, similar situations can be verified with the use of analogue modelling presented in this paper or 3D numerical one.

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Section: Introductionmentioning

confidence: 99%

2D Electrical Resistivity Tomography interpretation ambiguity - example of field studies supported with analogue and numerical modelling

Bania¹,

Ćwiklik²

2013

geol

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“…The following analytical conditions were applied: metal columns filled with the Molecular Sieve 5A (for analysis of hydrogen) and HaySep (for analysis of carbon dioxide), carrier gas (argon) flow rate of 30 ml/min, constant column temperature of 65°C, and sample volume of 2 ml injected with an automatic valve. More details of the methodology of chromatographic analyses were presented in several earlier publications [40][41][42][43].…”

Section: Field Sampling Of Soil Gases and Analytical Procedurementioning

confidence: 99%

Near-Surface Geochemical Anomalies Integrated with Seismic and Well Data over the Contact of the Outer Carpathians and the Carpathian Foredeep (SE Poland)

et al. 2018

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The objective of this study is to interpret the regularities in distribution of surface geochemical anomalies observed in a fragment of the contact zone between the Carpathian Fold-and-Thrust Belt and the Carpathian Foredeep (SE Poland). The surface geochemical survey included a total of 670 soil gas samples analyzed by gas chromatography, integrated with seismic cross sections, and supplemented by production data from wells. Maximum concentrations of methane, total alkanes C 2 -C 5 , total alkenes C 2 -C 4 , H 2 , and CO 2 measured in soil gas samples were 27.1 vol.%, 45.3 ppm, 0.49 ppm, 0.232 vol.%, and 6.29 vol.%, respectively. Traces of alkanes detected in samples are the result of microseepage from a few accumulations of various compositions. Methane and ethane migrate primarily from relative shallow Miocene strata, and higher alkanes from deeper Miocene strata and from Paleozoic-Mesozoic basement. We found relatively high positive correlation between the distribution of surface geochemical anomalies and the relative intensity of hydrocarbon shows recorded in the wells. The location and range of 13 anomalous zones are controlled by the patterns of both the Dębno and the Wojnicz slice-folds. Most of the anomalies occur over the Wojnicz Trough, suggesting the presence of conventional accumulations and/or the sites where the Miocene mudstone and heterolithic formations are saturated with gas.

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“…In the ground gases there were measured the content of methane, higher hydrocarbon vapors, carbon dioxide, oxygen, and hydrogen sulfide. The detailed description of the measuring set and the way of research was placed in [1,2,4,6,9,10,12,13,14].…”

Section: Implementation Of Researchmentioning

confidence: 99%

“…To confirm formulated above hypotheses should also be do the chromatographic research of C14 carbon isotope content in the taken methane samples from the soil to determine his age and confront it with the age of methane produced from the deposit [2,12,13,14]. At the current stage considerations these studies were not carried out, inter alia for financial reasons.…”

Section: Spatial Distribution Of the Methane Concentration In Soil Gasesmentioning

confidence: 99%

The analysis of the soil gases on the chosen example of oil mine

Fąfara¹,

Ilkiv²,

Przybyłowicz³

2015

drill

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Pollution of near-surface zone in the vicinity of gas wells

Cited by 16 publications

References 22 publications

2D Electrical Resistivity Tomography interpretation ambiguity - example of field studies supported with analogue and numerical modelling

2D Electrical Resistivity Tomography interpretation ambiguity - example of field studies supported with analogue and numerical modelling

Near-Surface Geochemical Anomalies Integrated with Seismic and Well Data over the Contact of the Outer Carpathians and the Carpathian Foredeep (SE Poland)

The analysis of the soil gases on the chosen example of oil mine

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