Tectono-magmatogenering structures in zones of increased geodynamic instability as priority objects for exploration of hydrogen fields

Lukin, A.E.; Шестопалов, В.М.

doi:10.24028/gzh.v43i4.239953

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Well sampling shows that these deposits contain admixtures of unspent hydrogen. Besides, the hydrogen also forms independent seeps to a shallow depth [Lukin, Shestopalov, 2021;Shestopalov et al, 2022]. The data available [Lepigov et al, 2011] indicate that degassing and fluid recharge pulses have occurred many times and are still occurring.…”

Section: T a B L E 5 Tp-conditions For Calculations Of Seriesmentioning

confidence: 99%

Native aluminum as indicator of hydrogen degassing in the formation of hydrocarbon fields

Lukin¹,

Koliabina²,

Shestopalov³

et al. 2023

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This work considers the possibility of native aluminum transport with hydrogen fluid, its deposition and preservation in sedimentary rocks, as well as an assessment of the conditions under which this is possible. This problem is currently debatable and is considered in a number of publications. Native aluminum was found in different types of sedimentary rocks of oil-and-gas-bearing basins. So the presence of native aluminum spherulas was established in the dolomites of the Dnipro-Donetsk Basin. By the example of these findings this work shows that the necessary conditions for the formation and long-term preservation of native aluminum are: its migration with the hydrogen flow into the upper layers of the Earth’s crust, the creation of temperature and pressure conditions causing water to vaporize, and the formation of a protective film on the surface of the formed native aluminum. The process of native aluminum formation in the sedimentary rocks of oil-and-gas-bearing deposits of the Dnipro-Donetsk Rift described in this work, as well as its findings in other basins indicates the typical character of this process for rift structures of hydrocarbon accumulation. It was assumed, that the oil-and-gas-bearing structure of Dnipro-Donetsk Rift is mantle origin and represents a giant source of deep hydrogen. Some of this hydrogen is consumed to form hydrocarbon accumulations, including known oil and gas deposits, and some of it degasses into the uppermost layers of the Earth’s crust. Independent hydrogen fields can also form there, as was the case during the formation of the deposit of geological hydrogen in Mali. It was shown, that the presence of hydrocarbons in the fluids does not affect the processes associated with aluminum. The results obtained indicate significant flows of hydrogen from the mantle to the upper horizons of the Earth’s crust. Thus, native aluminum, as well as other native oxyphilic metals in sedimentary rocks of oil-and-gas bearing basins is a search marker of both hydrocarbon accumulations and the important role of deep geological hydrogen in the formation of these accumulations and its possible accumulation in the most reliable traps.

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Section: T a B L E 5 Tp-conditions For Calculations Of Seriesmentioning

confidence: 99%

Native aluminum as indicator of hydrogen degassing in the formation of hydrocarbon fields

Lukin¹,

Koliabina²,

Shestopalov³

et al. 2023

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“…Fig.7. Geological section of Sribnenska depression and its framing along the Piryatin-Talalaevka profile[Lukin, Shestopalov, 2021]: 1 -saliferous deposits (P1), 2 -salt domes (D3), 3 -rhyphogeniccarbonate facies, 4 -red line combins segments on which the increase of a gradient in wells is established.…”

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The manifestations of modern degassing in the heat flow and deep structure (on the example of Lohvytsky block of Dnieper-Donetsk basin)

Usenko

2023

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The article contains heat flow calculations in the Lokhvytsky block and a scheme of the distribution of heat flow. We found the dependence of heat flow distribution with zones of activated deep faults of the crystal basement, sedimentary cover of Sribnenska depression and its surroundings. At the borders of Lokhvytsky block the heat flow in the area changes only a little, staying close to the average value — 40 mWt/m2. At all deposits the gradient increases by 20—30 °С/m, which happens at the intersection of tectonic, stratigraphic and lithological borders, which in many cases control the location of hydrocarbon deposits as well. Changes of temperature and composition of waters at the depth where the gradient jumps let us assume that their reason is modern hydrothermal activity. To find its manifestations, we incorporated geophysical research that determined the fault zones and zones of decompression, to which hydrocarbon deposits tend. The connection between thermal water discharge zones and faults is confirmed by their enrichment with hydrogen, helium, and the presence of native metal particles. Fault zones, which limit the Sribnenska depression and the Kherson—Smolensk transregional tectonic seam are shown at the crust structure, established by a two-dimensional speed model of seismic Р waves in the Еarth’s crust (GEORIFT 2013 profile). The results of seismotomographic research show the complex structure of the mantle, directly under the study area. Geophysical data demonstrate that faults manifested in the crystalline basement and sedimentary strata control the location of high-velocity blocks in the crust. The continuation of faults to the boundary of the crust and mantle is unquestionable. The inhomogeneities of the structure of the upper mantle and the transition layer, reflected in the seismotomographic model, can be traced directly under the Sribne depression to the lower mantle. This allows us to assume, as a working hypothesis, the existence of a chain of geodynamic processes that are manifested on the surface in hydrothermal activity.

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Methane degassing within Ukraine according to satellite data

Apostolov,

Ya Khodorovskyi,

Yelistratova

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The article substantiates the concept of degassing the Earth using the example of methane, a gas component of the fluid regime of the lithosphere. According to the analysis of observations from the Sentinel-5P satellite over the territory of Ukraine for the period 2019-2022, data on the distribution of methane (CH4 ) in the atmosphere were obtained using the Google Earth Engine (GEE) platform, and a corresponding map was compiled. The distribution of methane content within the main tectonic structures of Ukraine is very complex and is probably not related to the specifics of their development. It has been established that methane is present everywhere in the atmosphere of Ukraine but in different amounts. The relationship between the content of methane in the atmosphere and the content of hydrocarbons within 12 known oil and gas-bearing areas of the Dnieper-Donets Depression (DDD) was established. Two aggregates are distinguished: areas with the largest reserves of hydrocarbons and oil and gas-bearing areas with low reserves of hydrocarbons, which are characterized by a significant range of changes in the content of methane in the atmosphere. This indicates the connection of methane content in the atmosphere with hydrocarbon reserves in oil and gas-bearing areas. That is, the process of degassing is taking place and it can be studied according to the remote sensing (RS) data.

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Tectono-magmatogenering structures in zones of increased geodynamic instability as priority objects for exploration of hydrogen fields

Cited by 3 publications

References 13 publications

Native aluminum as indicator of hydrogen degassing in the formation of hydrocarbon fields

Native aluminum as indicator of hydrogen degassing in the formation of hydrocarbon fields

The manifestations of modern degassing in the heat flow and deep structure (on the example of Lohvytsky block of Dnieper-Donetsk basin)

Methane degassing within Ukraine according to satellite data

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