Radon measurements over a natural-gas contaminated aquifer

Palacios, D.; Fusella, Emidio; Avila, Yininber; Salas, Jhonny; Teixeira, Diana; Fernández, Guillermo; Salas, A.; Sajó-Bohus, L.; Greaves, E.D.; Barros, H.; Bolivar, Manuel; Regalado, Jimmy

doi:10.1016/j.radmeas.2012.10.016

Cited by 2 publications

(3 citation statements)

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“…The seepage of methane and other hydrocarbons from hydrocarbon-bearing formations along faults and fractures is well known throughout the world [11,12]. Active faults can be delineated by measuring radon concentrations over the study area; anomalies indicate more emissive zones related either to main faults or secondary fractures [13][14][15]. The research presented here aims to test the possibility of correlating measured soil gas parameters with hydrocarbon migration pathways in the subsurface (e.g., faults).…”

Section: Introductionmentioning

confidence: 99%

“…Measurements were taken at two sites that were selected based on known locations of hydrocarbon accumulation in the subsurface and oil seepage at the surface. Identification of hydrocarbon migration pathways has wide applicability, not only for petroleum exploration, but also for identifying sources of contamination of groundwater and surface water by hydrocarbons [15]. Hydrocarbons in the environment are persistent and consequently cause disturbance of natural equilibrium between the living species and their natural environment [24,25].…”

Section: Introductionmentioning

confidence: 99%

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Soil Gas Measurements of Radon, CO2 and Hydrocarbon Concentrations as Indicators of Subsurface Hydrocarbon Accumulation and Hydrocarbon Seepage

et al. 2021

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Soil gas measurements of radon (222Rn), CO2, and hydrocarbon concentrations, as well as gamma-ray spectrometry, were conducted at two separate locations to estimate the measurement results for known locations of hydrocarbon accumulations in the subsurface and oil seepage on the surface. The aim of the study was to confirm the applicability of the method for identifying migration pathways (e.g., faults) and to detect possible seepages of hydrocarbons to the surface as well as to investigate possible health issue potential about the soil gas analysis results. Site A investigations were performed with a large number of sampling points to provide sufficient spatial coverage to capture the influence of subsurface lithologic variability as well as the influence of the migration pathway on the measured parameters. For the investigation of site B, sampling points were positioned to reflect the situation between the area above producing hydrocarbon fields and areas with no confirmed accumulation. The results presented show that it is possible to distinguish the near-surface lithology (gamma-ray spectrometry), characterize the migration pathway, and indicate the area of oil seepage at the surface. Areas above the known hydrocarbon accumulations generally have elevated radon concentrations and detectable heavier hydrocarbons with sporadic methane in soil gas, which contrasts with the lower radon levels and lack of detectable heavier hydrocarbons in soil gas in the area with no confirmed hydrocarbon accumulation in the subsurface.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Soil Gas Measurements of Radon, CO2 and Hydrocarbon Concentrations as Indicators of Subsurface Hydrocarbon Accumulation and Hydrocarbon Seepage

et al. 2021

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“…The survey of environmental radon levels by SSNTDs (CR-39 TM and LR-115 TM ) lead to natural gas monitoring in areas of high density population. It has been reported that radioactive gas emission may represent a serious health hazard due to its explosive and asphyxiation potential for the Tascabaña population in Anzoátegui State, Venezuela as reported by Palacios et al [36] (Fig. 2).…”

Section: Passive Methods In Surficial Radioactive Gas Detectionmentioning

confidence: 86%

SSNTD Techniques in Radon Surveys for Hydrocarbon Exploration and Occurrence of Natural Gas Seeps

Palacios

Sajó-Bohus

Yoshimura

2015

SSP

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Leakages of hydrocarbon reservoirs often increase the radon concentration on the soil surface through distinct pathways; gas migration results in either prolific macro-seeps or micro-seeps. Soil gases, including radon, are recognized as potential tracers in geoscience. The surficial radiometric anomalies over hydrocarbon reservoirs provide the oil community with a complementary survey tool for oil exploration through the use of nuclear track methodology. The Solid State Nuclear Track Detector (SSNTD) is one of the recognized techniques to be employed advantageously in radon surveys for hydrocarbon exploration and occurrence of natural gas seeps. The nuclear track method provides information on the nature of radioactive gas sources, emanations from the soil and their transport pathways. Latent track etching conditions and their analysis are included.

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Radon measurements over a natural-gas contaminated aquifer

Cited by 2 publications

References 4 publications

Soil Gas Measurements of Radon, CO2 and Hydrocarbon Concentrations as Indicators of Subsurface Hydrocarbon Accumulation and Hydrocarbon Seepage

Soil Gas Measurements of Radon, CO2 and Hydrocarbon Concentrations as Indicators of Subsurface Hydrocarbon Accumulation and Hydrocarbon Seepage

SSNTD Techniques in Radon Surveys for Hydrocarbon Exploration and Occurrence of Natural Gas Seeps

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