Advanced Determination of Heat Flow Density on an Example of a West Russian Oil Field

Popov, Y.; Spasennykh, М.; Shakirov, A.; Чехонин, E.; Romushkevich, R.; Savelev, E.; Gabova, Anastasia; Zagranovskaya, D. E.; Valiullin, R.A.; Yuarullin, Rashid; Голованова, И. В.; Sal’manova, R. Yu.

doi:10.3390/geosciences11080346

Cited by 5 publications

(3 citation statements)

References 30 publications

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“…В этом случае влияние прошлых изменений климата на распределение теплового потока в скважинах с глубиной оказывается гораздо более значительным, чем в случае моделирования на 250 000 лет, хотя и не может полностью объяснить наблюдаемое увеличение теплового потока с глубиной. Вероятнее всего, определенную роль в вертикальных вариациях теплового потока играют изменения теплофизических свойств пород с глубиной и, возможно, эффекты миграции жидкости [Mottaghy et al, 2005;Popov et al, 2021].…”

Section: обсуждение результатовunclassified

New estimates of the influence of paleoclimate on the vertical distribution of heat flow

Голованова

Sal’manova

2023

Geol. vestn.

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The study of deep continental boreholes revealed significant vertical variations in heat flow. This fact still has no satisfactory explanation. One possible cause could be the effects of past climate changes, namely changes in the Earth's surface temperature. The paper discusses some consequences of accounting for the influence of paleoclimate on the measured heat flow using the example of the platform part of the Republic of Bashkortostan. A numerical simulation of the influence of paleoclimate on the distribution of the thermal field in the borehole was performed using two models of past climate changes. The first model, adopted earlier, includes two major climatic episodes of the past, the Würm glaciation 80–10 thousand years ago, and the Little Ice Age, 600–150 years ago. The second model uses the climatic curve for the Meso-Cenozoic, which additionally takes into account the warming that began about 65 Ma, reached its maximum about 45 Ma, and followed by a cooling that continued with some fluctuations until the present time [Velichko, 1987]. It is shown that, in the analysis of vertical variations in heat flow, the use of a model of past climate changes, taking into account more distant large climatic events than has been done previously, allows us to estimate the paleoclimate influence as much more significant than previously thought. However, at this stage of the research, with the accepted models of temperature changes at the Earth's surface, the vertical variations of the heat flow established by the results of experimental geothermal studies cannot be explained only by the influence of the paleoclimate. To solve the problem, we need a detailed study of the thermophysical properties of rocks, high-quality temperature measurements in wells, and improvement of the model of past climate changes in the region under study.

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Section: обсуждение результатовunclassified

New estimates of the influence of paleoclimate on the vertical distribution of heat flow

Голованова

Sal’manova

2023

Geol. vestn.

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“…The determined values had an estimative character (being often point values), but they were useful in determining the thermal structure of the geological layers [10].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Thermal Conductivity in Gas Field Rocks

Timur¹,

Jugastreanu²,

Mehdi³

et al. 2023

Numerical Simulation - Advanced Techniques for Science and Engineering

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The thermal conductivity of rocks is a property necessary to be determined at the beginning of the exploitation of oil and gas deposits, both for the design of secondary extraction (hot water injection, steam) and for the development of tertiary extraction technologies (CO2 injection, injection flue gas, and initiation of underground combustion). In this chapter, we present a new method for determining the thermal conductivity of rocks and we also analyzed the relationships between this parameter and the properties of oil and gas collector rocks (density, porosity).

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“…However, reconstruction of formation temperatures in the past requires reliable geothermal data on rock thermal properties and heat flow density. Popov et al [6] demonstrate the first experience of supporting basin modeling in unconventional plays with advanced experimental geothermal investigations on the example of the Domanik Formation (Orenburg region, Russia). The rock thermal properties are both measured with continuous thermal core profiling on all recovered cores (~1.700), and determined from well-logging data within non-cored intervals.…”

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confidence: 99%