Transient Electromagnetic Sounding in 2d, 3d, and 4d Modes: Sequence of Geological Exploration Activities

Buddo, I.V.; Шелохов, И.А.; Мисюркеева, Н.В.; Агафонов, Ю.А.

doi:10.5800/gt-2021-12-3s-0549

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…Основными методами картирования зонноблоковой структуры в глубоких частях осадочных комплексов являются 3D электро и сейсморазведочные съемки, реализующиеся в больших объемах на месторождениях УВ [Rybalchenko et al, 2020;Buddo et al, 2021]. Грани цы блоков, представленные магистральными сместителями, отчетливо выделяются на геоэлектрических или сейсмических разрезах смещением маркирующих горизонтов, осей синфазности и пр.…”

Section: нижняя часть разреза осадочной толщиunclassified

Analysis of the Fault-Block Structure and Stress State of the Sedimentary Cover in Gas-Condensate Deposits: Basics of the Tectonophysical Approach

Seminsky

Burzunova

Bornyakov

et al. 2023

Geodin. tektonofiz.

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Consideration is being given to the tectonophysical approach to the reconstruction of structure formation mechanisms and stress-strain state of rocks in hydrocarbon deposits localized in the platform cover, which has a complex structure in terms of rheological layering and disturbance by different-rank fractures. With the Kovykta gas condensate field, largest in Eastern Siberia, there were shown the main methods and ways of using modern achievements in tectonophysics for interpreting geological and geophysical information on the upper and lower parts of the sedimentary cover, unique in terms of volume and significance, that was obtained during geological exploration therein. Regularities of changes in the stress-strain state of rocks, found during the research, are combined into a tectonophysical model, which can be used as a base for other hydrocarbon deposits. The model is based on the concept of a zone-block structure of the platform cover, which is formed by a network of subvertical and subhorizontal fault zones that divide it into less faulted blocks. Disjunctive structures are highly fractured zones with concentration of relatively small low-amplitude faults, i.e. represent the early stages of faulting. The zone-block structure is formed mainly by tectonic or gravitational forces; in the first case, the stages and fracture characteristics are transformed onto the platform from the surrounding mobile belts, and in the second case they are determined by the presence of ductile rocks in the section capable of gravitational sliding. The graphic component of the tectonophysical model is 3D datasets that show the zone-block structure and stress state of rocks for the deposit with the degree of detail provided by key geophysical materials and, primarily, by seismic data. By modern GIS, this information can be quickly retrieved for any-size area of the studied rock mass and then used as a basis for solving production issues related to the development of deposits in fracture-pore reservoirs, or for analyzing general problems of their formation and dynamics.

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Section: нижняя часть разреза осадочной толщиunclassified

Analysis of the Fault-Block Structure and Stress State of the Sedimentary Cover in Gas-Condensate Deposits: Basics of the Tectonophysical Approach

Seminsky

Burzunova

Bornyakov

et al. 2023

Geodin. tektonofiz.

Self Cite

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Force Analysis of Anti-slip Pile Bodies on Soil Mudstone Slopes Under Heavy Rainfall

Liu¹

2023

Lecture Notes in Civil Engineering

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The soil mudstone slope anti-slip piles are used as the object of study to analyse the pile forces under the action of heavy rainfall. Introduction to the project, description of the general topographic elevation of the area; extraction of seepage potential energy from soil mudstone, calculation of rainfall and rainfall infiltration, assumption of vertical wall backs and horizontal fill behind the wall, calculation of lateral pressure on the rock supported by anti-slip piles, analysis of its damage mode according to the morphology of the bedrock surface and the conditions of the rock outwash structural surface, and calculation of slope stability under the action of strong rainfall. Analysis of the results: setting the length of the anti-slip piles at 15.5–17.5 m is most reasonable under the effect of heavy rainfall.

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Electromagnetic Surveys for Petroleum Exploration: Challenges and Prospects

Buddo

Шелохов²,

Misyurkeeva³

et al. 2022

Energies

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Transient electromagnetic (TEM) surveys constitute an important element in exploration projects and can be successfully used in the search for oil and gas. Different modifications of the method include shallow (sTEM), 2D, 3D, and 4D (time-lapse) soundings. TEM data allow for solving a large scope of problems for estimating resources and reserves of hydrocarbons, discriminating reservoir rocks, detecting tectonic features, and characterizing drilling conditions. TEM surveys are applicable at all stages, from initial prospecting to production, and are especially efficient when combined with seismic surveys. Each stage has its specific objectives: estimation of net pay thickness, porosity, and fluid type during prospecting, optimization of well placement and prediction of drilling conditions in exploration, and monitoring of flooding during production. Electromagnetic soundings resolve permafrost features well and thus have a high potentiality for exploration in the Arctic petroleum province. At the first reconnaissance stage of regional prospecting in East Siberia, electromagnetic and seismic data were used jointly to map the junction of the Aldan basin (part of the Aldan-Maya foredeep) with the eastern slope of the Aldan uplift and to constrain the limits of Neoproterozoic sediments. The TEM-based images revealed reservoir rocks in the Upper and Middle Neoproterozoic strata. TEM data have implications for the amount of in-place oil and gas resources in prospects, leads, and plays (Russian categories D1–3) at the prospecting and exploration stages and contingent recoverable reserves (C2) during exploration (latest stage). The contribution of the TEM survey to oil and gas evaluation is quantified via economic variables, such as the value of information (VOI) and expected monetary value (EMV).

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Transient Electromagnetic Sounding in 2d, 3d, and 4d Modes: Sequence of Geological Exploration Activities

Cited by 3 publications

References 14 publications

Analysis of the Fault-Block Structure and Stress State of the Sedimentary Cover in Gas-Condensate Deposits: Basics of the Tectonophysical Approach

Analysis of the Fault-Block Structure and Stress State of the Sedimentary Cover in Gas-Condensate Deposits: Basics of the Tectonophysical Approach

Force Analysis of Anti-slip Pile Bodies on Soil Mudstone Slopes Under Heavy Rainfall

Electromagnetic Surveys for Petroleum Exploration: Challenges and Prospects

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