Parameters of near-surface rocks by combination of radioactive logging in section of key wells for seismic microzoning

Кулык, Володымыр; Bondarenko, M.S.; Dmytrenko, Oleh

doi:10.3997/2214-4609.201800090

Cited by 2 publications

(19 citation statements)

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“…Three-component tool 2NNL+DL+GR. The three-component radioactive logging tool (TRL tool) combines three RL methods: neutron-neutron logging (a dual-spacing version), density logging, and gamma-ray logging [Kulyk et al, 2012[Kulyk et al, , 2013c, and includes all the advantages of the dual-channel tools.…”

Section: Dual-channel (Dual-spacing) Tool 2nnlmentioning

confidence: 99%

“…This multisonde RL tool can be implemented in several ways [Kulyk et al, 2013c] meeting the requirements for the relative position of radiation sources and detectors. The scheme of the variant selected for implemen- tation [Bondarenko et al, 2023] is presented in Fig.…”

Section: Dual-channel (Dual-spacing) Tool 2nnlmentioning

confidence: 99%

“…-modern apparatus for borehole measurements [Ketov et al, 2009;Kulyk et al, 2012Kulyk et al, , 2013cKulyk et al, , 2017b;…”

Section: Introductionmentioning

confidence: 99%

“…-theoretical basis, novel methodical approaches, and ways for the complex determination of an extended set of engineering geophysical parameters with the help of radioactive logging [Kulyk et al, 2013a, b;2015, 2017aKulyk, Bondarenko, 2014, 2022;…”

Section: Introductionmentioning

confidence: 99%

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Geophysical technology for determining the ground parameters (methods and apparatus)

Bondarenko¹,

Yevstakhevych²,

Kulyk³

et al. 2023

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At the Institute of Geophysics of the National Academy of Sciences of Ukraine a modern technology for ground investigation has been created for solution of the engineering geological problems, including seismic microzonation. Technology is based on the methods and apparatus of radioactive logging (RL), which involves neutron-neutron logging (NNL), gamma-gamma density logging (DL) and gamma-ray logging (GR). The paper presents the results of the development of radioactive logging apparatus as an integral part of the new technology. Set of prototype dual-channel tools, namely 2NNL (dual-spacing NNL) and DL+GR, prototype three-component tool 2NNL+DL+GR, surface control and registration console were developed and produced on the basis of the modern elemental base. The 2NNL tool makes it possible to determine neutron porosity in two ways: single-sonde method and compensation method. Compensation neutron logging, in particular, aims to determine the porosity in the presence of anomalous neutron absorbers in the rock, and also, in combination with the single-sonde method, to estimate the content of anomalous absorbers. GR-channel of the DL+GR tool was equipped the same gamma-ray detector as the DL-channel. Here, the GR-detector performs a dual function: 1) integral registration of natural gamma-ray of ground, 2) account of natural background in the total readings of the DL-detector. The three-component radioactive logging tool combines three RL-methods and includes all the advantages of dual-channel tools. The obtaining a results in one trip by this tool is particularly important for relatively deep boreholes. According to the experimental results, the optimal intervals between sources and detectors of radiation in the created combined RL tools were established. The importance of adjustment and controlling the signals of sensors of the RL tools is shown; the new console allows to perform these procedures operational. The created apparatus increases the productivity and efficiency of logging operations by reducing the number of trips, digital recording, storage and transmission of information, and by using of a computer programs for processing and interpreting the results of borehole measurements. The effectiveness of the developed apparatus, together with the appropriate metrological and interpretation-methodical support, has been demonstrated on specific examples of borehole investigations and confirmed by independent laboratory data. The technology allows to determine the following engineering geophysical parameters: total density, dry ground density, content of shale, porosity, volume moisture, water saturation factor, groundwater level, etc.

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Section: Dual-channel (Dual-spacing) Tool 2nnlmentioning

confidence: 99%

Section: Dual-channel (Dual-spacing) Tool 2nnlmentioning

confidence: 99%

“…-modern apparatus for borehole measurements [Ketov et al, 2009;Kulyk et al, 2012Kulyk et al, , 2013cKulyk et al, , 2017b;…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geophysical technology for determining the ground parameters (methods and apparatus)

Bondarenko¹,

Yevstakhevych²,

Kulyk³

et al. 2023

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“…At the Institute of Geophysics of the Na tional Academy of Sciences of Ukraine (IGPh), systematic work has been carried out to create a new technology for the ground in vestigation. The technology is based on the ap paratus and methodical complex of radio ac ti ve logging (RL) for solving geophysical engineering problems, including seismic micro zona tion [Zvolskyi et al, 2010;Kulyk et al, 2012Kulyk et al, , 2013Kulyk et al, , 2015Kulyk et al, , 2017aBondarenko et al, 2013Bondarenko et al, , 2018Bondarenko et al, , 2019Bondarenko et al, , 2021Bon daren ko, Ku lyk, 2015;Kend zera et al, 2016].…”

mentioning

confidence: 99%

Determination of engineering geophysical parameters of grounds on building sites and for seismic microzonation (methodical and metrological components of technology)

Bondarenko

Кулык

2022

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To ensure the reliability and long-term usage of high housing buildings, important industrial, infrastructural and other objects, it is necessary to carry out engineering geological investigations of grounds (near-surface rocks) as the basis of these structures. To prevent the potential danger of destruction of the objects, it is also necessary to perform microseismic investigations of the near-surface geological environment and to agree the obtained results with the engineering geological parameters in the section of the test boreholes. Engineering geological parameters, determined by geophysical methods, are named engineering geophysical parameters. To solve the geophysical engineering problems, including seismic microzonation, at the Institute of Geophysics of the National Academy of Sciences of Ukraine a modern investigation technology has been created. The technology is based on apparatus and methodical complex of radioactive logging, which involves gamma-ray logging (GL), density logging (DL) and neutron logging (NL). This paper presents the results of developing adequate methodical and metrological assurance of the radioactive logging complex as a key technology element. Complexation of methods GL, DL and NL (taking into account a priori data) and the use of the proposed approaches allow determining a wide set of engineering geophysical parameters: density, porosity, volume moisture, groundwater level, the content of shale, the content of clay minerals, water saturation, dry ground density, etc. The features of obtaining parameters by the radioactive logging complex in the zone of aeration and the zone of saturation are shown, as well as taking into account the influence of the shaliness on the determined parameters. The effectiveness of the technology has been demonstrated by specific examples and confirmed by independent laboratory measurements.

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Parameters of near-surface rocks by combination of radioactive logging in section of key wells for seismic microzoning

Cited by 2 publications

References 0 publications

Geophysical technology for determining the ground parameters (methods and apparatus)

Geophysical technology for determining the ground parameters (methods and apparatus)

Determination of engineering geophysical parameters of grounds on building sites and for seismic microzonation (methodical and metrological components of technology)

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