Earth sciences and subsoil use最新文献

{"title":"Applications of high-resolution seismic frequency and phase attribute analysis techniques","authors":"Jiang Renqi, J. Castagna, Wu Jian","doi":"10.21285/2686-9993-2022-45-4-324-344","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-4-324-344","url":null,"abstract":"Seismic prospecting for oil and gas exploration and development is limited by seismic data resolution. Improving the accuracy of quantitative interpretation of seismic data in thin layers, thereby identifying effective reservoirs and delineating favorable areas, can be a key factor for successful exploration and development. Historically, the limit of seismic resolution is usually assumed to be about 1/4 wavelength of the dominant frequency of the data in the formation of interest. Constrained seismic reflectivity inversion can resolve thinner layers than this assumed limit. This leads to a series of highresolution quantitative interpretation methods and techniques have been developed. Case studies in carbonates, clastic, and unconventional reservoirs indicate that the application of quantitative interpretation techniques such as high-resolution seismic frequency and phase attribute analysis can resolve and allow/or allow quantitative estimation of rock and fluid properties in such seismically thin layers. Band recovery using high resolution seismic processing technology can greatly improve the ability to recognize geological details such as thin layers, faults, and karst caves. Multiscale fault detection technology can effectively detect small-scale faults in addition to more readily recognized large-scale faults. Based on traditional seismic amplitude information, high-resolution spectral decomposition and phase decomposition technology expands seismic attribute analysis to the frequency and phase dimensions, boosting the interpretable geological information content of the seismic data including subsurface geological characteristics and hydrocarbon potential and thereby improving the reliability of seismic interpretation. These technologies, based on high-resolution quantitative interpretation techniques, make the identification of effective reservoirs more efficient and accurate.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124815252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Petrophysical substantiation of geological section elastic-velocity property recovery potential based on TEM data","authors":"I. Shelokhov, A. Pospeev, I. Buddo","doi":"10.21285/2686-9993-2022-45-4-367-379","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-4-367-379","url":null,"abstract":"The geological section of Eastern and Western Siberia (Russia) is a very complicated object for seismic exploration. The research presented in the article is aimed at studying a petrophysical relation between electrical resistivity and P-wave velocity, as a basis for predicting the velocity model of the upper part of the section based on TEM sounding. Having performed a numerical modeling of petrophysical function, the authors calculated the dependency curves of electrical resistivity on the P-wave velocity. The obtained results of mathematical modeling and field experiments have proved the effectiveness of the proposed methodology as it increases the accuracy of geological model construction and enhances prediction reliability. Based on the dependences obtained, conclusions were drawn about the geological conditions favorable for a steady transition of section geoelectric characteristics to the velocity ones. The proposed technology is shown to provide a reliable reconstruction of the velocity model of the upper part of the section. The use of the developed methodology allows to improve the quality of seismic data processing and increase the accuracy of geological section boundary mapping at minimum cost based on the nature of the problem under investigation.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123089140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oil and gas complexes as a material expression of geofluid dynamic systems","authors":"L. Rapatskaya","doi":"10.21285/2686-9993-2022-45-4-345-366","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-4-345-366","url":null,"abstract":"The purpose of the present research is to analyze the geofluid dynamic concept of oil and gas formation. The research uses the author's data on the structure, composition and thickness of multi-aged oil and gas complexes of the Siberian platform (Russia). The oil and gas complexes identified as a result of the integrated geological, geochemical and geophysical studies carried out under oil and gas geological zoning and operational work are presented as a material expression of geofluid dynamic systems. Any geofluid dynamic system includes hydrocarbon generation centers, oil and gas migration routes, types of reservoirs and traps, lithological composition of reservoir rocks and reservoir cap rocks Also it is controlled by a favorable combination of their appearance in geological time and space. An ordinary fluid dynamic system is presented by hydrocarbon solutions generated by oil and gas generation centers, which are examples of a trivial defluidization of oil and gas source rocks of a sedimentary basin. This study allowed to be the first who has identified the elements of multi-age geofluid dynamic systems, presented their material expression in the form of multi-age oil and gas bearing complexes as well as analyzed the composition of hydrocarbons on the example of individual deposits of variousoil and gas-bearing areas. Besides, possible generation centers of hydrocarbon fluids and ways of their migration were investigated. Oil fields of different ages of the oil and gas bearing provinces of the Siberian Platform feature different composition and density, whereas according to numerous available data, they belong to a single genetic type, which is characterized by the predominance of methane hydrocarbons.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122727005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The concentrations of artificial and natural radionuclides in the bottom sediments of south-west Altai territory water bodies","authors":"O. Y. Korovina, V. Somin, A. Aidarkhanova, L. Komarova","doi":"10.21285/2686-9993-2022-45-4-380-391","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-4-380-391","url":null,"abstract":"The purpose of the research is to study and analyze the environmental condition of small streams and reservoirs in the southwestern part of the Altai Territory (Russia), which were previously exposed to radiation as a result of nuclear tests at the Semipalatinsk test site. Conducting the research, the authors obtained the results of studying the content of artificial and natural radionuclides in the bottom sediments of the water bodies under investigation. Sampling of bottom sediments and their analytical studies were carried out in 2020–2022. The sampling involved measurements of the dose rate of bottom sediment gamma radiation. Having dried and ground the samples, the authors measured the flux density of alpha and beta particles from the surface. Laboratory studies of the samples were carried out using highly sensitive analytical equipment including an ORTEC GEM25P4-70 gamma spectrometer, an Alpha Analyst A1200-32AM CANBERRA alpha spectrometer, and a TRI-CARB 3110TR PerkinElmer beta spectrometer. The activities of natural radionuclides (potassium-40, thorium-232, radium-226) and artificial radionuclides (americium-241, plutonium-239+240, cesium-137 and strontium-90) were identified in the bottom sediments. It was determined that the radiation parameters of bottom sediments of water bodies in the southwestern part of the Altai Territory do not exceed the standard level, and the remains of traces of nuclear tests that took place at the test site are not found in the studied water bodies today.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129131106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Producing gold nugget simulants using copper alloys","authors":"V. Sorokina, M. Konstantinova","doi":"10.21285/2686-9993-2022-45-3-265-274","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-3-265-274","url":null,"abstract":"Today the imitations of gold nuggets are highly promising materials in conceptual jewelry design. The manufacturing technology of these materials is based on melted brass casting in a cooling liquid. The purpose of this research is to identify the most favorable technological processes to obtaining high-quality simulants of gold nuggets. The article presents the results of the experimental studies of CW508L brass. The most favorable technological parameters have been identified. They include the melt temperature up to 970±5 °C and use of water with the temperature not higher than 20–25 °C as a cooling liquid. Adherence to the specifications allows to obtain the casts, which superficially resemble natural gold nuggets found in alluvial gold deposits. The casts’ intricate shape and uneven relief providing this resemblance are due to the specific crystallization conditions of brass that differ from the crystallization conditions under conventional casting. The research involved the analysis of the chemical composition of the alloy samples before tests and the samples obtained after casting. After processing the alloy has featured an insignificant decrease in the zinc percentage, and an increase in the impurity content (silica, sulfur, iron, and chrome). The metallographic analysis of the initial sample of CW508L brass has shown a single-phase microstructure that is a solid solution of zinc substitution by copper. The similar study of the casts obtained in the experiment has shown the presence of a β-phase in their structure (along with an α solid solution) that is a CuZn-based solid solution having a positive effect on brass mechanical properties. This microstructure is typical of the alloys undergone accelerated cooling that qualitatively changes the process of melt converting into a solid substance.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133738675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Indicators of cutting removal efficiency when drilling directional wells","authors":"A. Lambin","doi":"10.21285/2686-9993-2022-45-3-285-293","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-3-285-293","url":null,"abstract":"Borehole cleaning is still a major challenge for most directional wells despite a significant progress achieved in drilling fluids, tools and field practice, as well as in the development of academic and industry research. Insufficient cleaning of the borehole causes undesirable phenomena in the form of various complications. Therefore, the purpose of the conducted research was to present the main correlations that determine the nature and cleaning degree of the annular eccentric space of the well and to analyze these correlations presented in the form of indicators in order to improve them. The object of the research is the mechanics of cuttings removal from an inclined or horizontal well. In the frameworks of this research mechanics is mathematically displayed in the form of indicators reflecting one or another physical aspect of the cuttings removal process. The research methodology consists in the analysis of the composition of indicators, evaluation of the significance of the indicator constituents, identification of the quantitative contribution of the indicator to the cleaning degree of the annular space of the directional well from destruction products while sinking the borehole. The study resulted in the introduction of the following indicators: equivalent circulation density, slip velocity and cuttings removal index. The physical essence of indicators in their mathematical form is shown with the focus on the slip velocity. The definition of the latter, which is widely accepted among the specialists indicates the rate of washing of cutting particles by the drilling fluid during its transportation to the day-light surface. This indicator is one of the main ones that determine the hydrodynamics of the cuttings transport process. To simplify the calculation of the indicator, it is proposed to use the dimensionless Lyashchenko criterion.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134357433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using proppant indentation coefficient in design of hydraulic fracturing treatment of oil source rocks","authors":"A. A. Nuriev, S. Sultanov","doi":"10.21285/2686-9993-2022-45-3-305-312","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-3-305-312","url":null,"abstract":"The purpose of the study is the laboratory determination of proppant indentation coefficients depending on the geological composition of the oil source rocks and their application in the design of hydraulic fracturing treatment. The laboratory researches used the core material of oil-producing deposits of the Domanic formation. The indentation of prop pant was carried out on the CTM-100 compression testing machine, in order to eliminate the measurement error, the size of the cells was additionally specified using ADF U300P microscope with the operation capacity either in reflected light or reflected and transmitted light only. As a result, the geological features of the Domanic complex were confirmed: a large content of organic matter was traced on the core material, the bulk of the rock was composed of carbonates with frequent lithological layering. The indentation coefficient of 20/40 proppan were as following: 0.2–0.4 mm in limestones, 0.23–0.45 mm in clay limestones, 0.47 mm for organic matter. The indentation coefficients for 30/50 proppant were as follows: 0.1– 0.5 mm in limestones, 0.13–0.55 mm in clay limestones, 0.47 mm in organic matter. The use of the obtained coefficients in the design of hydraulic fracturing treatment allowed to specify the fixed width of the crack opening that will have a positive effect on the predicted starting well yield under subsequent modeling. The proppant indentation is in direct relationship to the composition of the oil-producing rocks. When using the proppant coefficients it is advisable to pay additional attention to the proppant tracking map. The use of laboratory studies with subsequent modeling in the hydraulic fracturing simulator allows more accurate understanding of the fixed geometry of the crack of the formation fracturing. Estimation of the crack opening width at the stage of hydraulic fracturing design makes it possible to adapt the parameters of formation treatment, which has a positive effect on the lifetime of the crack width as well as on the well yield.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"167 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120970759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geoecological conditions of the Khabarovsk agglomeration for construction waste disposal","authors":"V. Kulakov, V. E. Pasichnikov","doi":"10.21285/2686-9993-2022-45-3-275-284","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-3-275-284","url":null,"abstract":"This research is aimed at the geoecological assessment of the territory of the Khabarovsk agglomeration in terms of location possibility of construction and demolition waste or recycling of the latter, as well as the environmental impact of the waste. The annual volume of construction waste generation in Khabarovsk is 407.5 thousand tons (326.9 thousand m3). All waste from the construction sector of the Khabarovsk agglomeration is sent to landfills. The study territory distinguishes two areas: the one of the flood plain and above-floodplain terraces of the Amur river in the western part, which is flooded in the periods of high and catastrophic floods and features unfavorable geoecological conditions, and the area on the right bank of the Amur river in the eastern part of the territory with urban development where the groundwater levels exceed 2 m. In the course of the study, the authors identified the potential locations of the construction waste recycling complex and considered the possibility of arranging a site for temporary storage of raw materials having given the rationale for this choice. The methods applicable in the field of waste recycling under the formation of the construction and demolition waste processing industry are described. The potential of using waste as material resources as well as the environmental aspects of waste recycling in the form of building materials are evaluated. It is noted that by 2030, the carbon footprint will be 116.8 thousand tons of carbon dioxide as a result of waste disposal at municipal solid waste landfills. To reduce the carbon footprint (carbon dioxide emissions) during the construction works involving concrete and bituminous concrete it is justified the use of processed aggregates based on recycled crushed stone. The sites favorable for the placement of construction waste recycling enterprises have been identified during the survey of the city. They are located outside the existing and prospective urban and industrial development, as well as outside the zones of specially protected natural areas.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116072886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of hydrodynamic effects on dispersoid structural changes under microdisintegration","authors":"N. Khrunina","doi":"10.21285/2686-9993-2022-45-3-294-304","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-3-294-304","url":null,"abstract":"The purpose of the presented study is to give a theoretical substantiation of the formation process of a high-clay sand dispersoid from placers with a high content of fine and finely dispersed gold under changing hydrodynamic parameters of the hydro mixture flow by means of enclosing and reflecting surfaces of the proposed installation. The object of the research is the process of hydrodynamic disintegration. The subject of the study includes the main parameters of the hydrodynamic effect on the mineral environment and the destruction nature of high-clay sands under hydrodynamic conditions. While doing the research, the author used the methods for constructing a mathematical model of dispersoid transformation under hydrodynamic effect on the hydro mixture, analytical and numerical calculations. The analysis of the aspects of hydrodynamic phenomena and interactions made it possible to substantiate the dispersoid formation process based on the intensification of microdisintegration and to identify the characteristic impact factors as well. Based on the theory of changes in the thermodynamic potential of the system of particle surfaces under dynamic exposure, a method has been proposed for determining the hydrodynamic variation parameters of the hydromixture structural component in the closed cavity of the generator when interacting with the elements of the enclosing and reflecting surfaces. The performed numerical calculations allowed to reveal a significant increase in the specific interphase surface of the dispersoid of the mineral component. The interaction of the elements of enclosing and reflecting surfaces according to the proposed innovative layout of elements location in the generator under the directed supply of the hydromixture from the nozzle into a closed cavity resulted in the increase from 3 to 4 times. A new design of a hydrodynamic generator and a flow diagram have been introduced on order to activate the extraction process of microparticles of valuable components.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131094586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioherms of the Bozhekhan uplift in the Cis-Baikal trough as a marginal barrier reef system of a Cambrian salt basin of the southern Siberian platform","authors":"A. Vakhromeev, T. Kornilova, N. Misurkeeva, R. S. Urenko, A. M. Stanevich, N. I. Stepanova, M. S. Pulyaevskiy","doi":"10.21285/2686-9993-2022-45-3-246-264","DOIUrl":"https://doi.org/10.21285/2686-9993-2022-45-3-246-264","url":null,"abstract":"Modern forecast, exploration and development of hydrocarbon deposits within natural carbonate reservoirs of buried bioherm (reef) structures in the north of the Irkutsk region and the Sakha Republic (Yakutia) areas within the NepaBotuoba Anticline apply the most advanced technologies of 3D seismic exploration and geoelectric prospecting supplemented with a set of new interpretation approaches and analysis attributes contrasted against wide range of well logging data. The recent discoveries of hydrocarbon deposits in the northern reefs shoved the bioherms of the Irkutsk amphitheater in the shadow. The purpose of this research is geological study of biohermal carbonate formations of the Lower Cambrian age in the outcrops of the Bozhekhansky megaswell in the Baikal region. The choice of this object of study is due to the fact that the first oil and gas inflows were obtained from the wells of the Atovskaya, Osinskaya, Birkinskaya, Khristoforovskaya, Balykhtinskaya and Tuturskaya areas. Field geological routes and office processing of data on cuts and polished thin sections of sample surfaces were carried out including microscopic studies in the thin sections of samples and archival collections of cores from deep oil and gas prospecting wells. In 2021–2022, while prospecting in the south of the Irkutsk amphitheater, the authors explored stratified, nodular and columnar stromatolites found within the compound Bozhekhan megaswell of Cambrian carbonate outcroppings. Carbonate intraformational sedimentary breccias identified in the area under investigation feature a great variety in their fragment sizes and inclusions. The stromatolites’ structural features were studied by the cuts and polished thin sections of sample surfaces. Microphytolites were found in the thin sections and described. The authors also took advantage of the opportunity to study an archive collection of the thin sections of VendCambrian and Lower Cambrian carbonate strata from the Akhinskaya area’s wells at the Bozhekhan megaswell and from the Upper-Lena uplift to the north-west. The conducted study implies that Cambrian bioherm outcroppings of the Bozhekhan megaswell-type uplift within the Cis-Baikal trough are, in a sense, model geologic objects. The study of biologic and genetic varieties of Lower Cambrian phytolites, diagnostic features of the organogenic structures, their inner structure and formation processes of the reef ecosystem may provide a region-level prognostic key to the research of Cambrian sediment system in the south of the Siberian platform.","PeriodicalId":128080,"journal":{"name":"Earth sciences and subsoil use","volume":"126 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124437227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}