Analysis of the displacements of pipeline overpasses based on geodetic monitoring results

Shults, Roman; Annenkov, Andriy; Seitkazina, Gulnur; Soltabayeva, Saule; Kozhayev, Zhenis; Khailak, Andrii; Nikitenko, Kira; Sossa, Bohdan; Kulichenko, Nataliia

doi:10.1016/j.geog.2021.09.005

Cited by 9 publications

(10 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As a laboratory analysis has shown, general mineralization of reservoir water is 100-130 g/l. In this context, concentration of chloride ions achieves 98-100 g/l; specific weight of reservoir water is 1.09-1.12 g/сm 3 ; and concentration of hydrogen ions is 4.3-6.4 mg/l. It should be mentioned that corrosion activity of reservoir water depends upon a significant content of chloride ions and iron (40-50 mg/l) as well as availability of such corrosive ingredients as oxygen (1.23-1.54 mg/l), hydrogen sulfide (1.5-1.8 mg/l), and carbon dioxide (24.5-35.2 mg/l).…”

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

Analysis of corrosion fatigue steel strength of pump rods for oil wells

Vynnykov¹,

Kharchenko²,

Manhura³

et al. 2022

Min. miner. depos.

View full text Add to dashboard Cite

Purpose is to perform analysis of corrosion durability (fatigue) of pump rod materials in terms of various chemically active simulation environments, and study influence of economically modified rare-earth impurity on corrosion fatigue strength of pump rod materials. Methods. 40 and 20N2M steel grades have been applied as well as experimental steel (ES). Steel of the conditinal ES grade has been melted within a pilot site of Institute of Electric Welding Named after E.O. Paton of the National Academy of Sciences of Ukraine. The steel was alloyed economically by means of a micro impurity of a rare-earth element (REE) being 0.03% of cerium; in addition, it contained comparatively low concentration of sulfur and phosphorus as well as minor concentration of dissolved hydrogen. The following has been used as simulation environments: 1) NACE environment (i.e. 5% NaCl solution which contained 0.5% СН3СООН, and saturated H2S; t = 22 ± 2°C; pH = 3.8-4.0); 2) 3% NaCl solution without hydrogen sulphide. Once every day, the environment was replaced to oxygenate it up to 8-10 mg/l concentration. Findings. Stability against sulfide stress-corrosion cracking (SSCC), hydrogen initiated cracking (HIC), and corrosion fatigue of steel of deep pump rods for oil industry has been studied. It has been defined that the experimental steel, modified economically by means of micro impurities of a REE, meets NACE MR0175-96 standard in terms of chemical composition as well as strength; in turn, 20N2M and 40 steel grades have high resistance neither to SSCC (threshold stresses are < 0.8 s) nor to corrosion fatigue attack; moreover, steel grade 40 has demonstrated low resistance to HIC (CLR > 6% and CTR > 3%). Originality. It has been identified that corrosion fatigue attack results from hydrogen penetration of steel initiating its cracking and hence destruction under the effect of alternating loads accelerated by the action of corrosive environment. Further, surface micro destructions, influenced by micro stresses, transform into large discontinuities and cracks with following macro destructions. Practical implications. It has been proved that high resistance to corrosion cracking can be achieved by means of refining of pump-rod steel of ferrite and perlite type using metallurgical methods, i.e. 0.01-0.03% REE microalloying.

show abstract

Section: Introductionmentioning

confidence: 97%

“…It is known that a pump rod performance is among the most important factors determining overhaul operational period of oil [1]- [3]. From 2019 to 2020, Nafrogaz of Ukraine NJSC made 127 repairs due to rod breakages.…”

Section: Introductionmentioning

confidence: 99%

Analysis of corrosion fatigue steel strength of pump rods for oil wells

Vynnykov¹,

Kharchenko²,

Manhura³

et al. 2022

Min. miner. depos.

View full text Add to dashboard Cite

show abstract

“…The task of computer modeling of geomechanical processes and phenomena is to obtain qualitative and quantitative assessments of the studied phenomenon using computer methods [48]- [50]. It should be noted that the use of computer methods in geomechanics makes it possible to adapt and spread mathematical modeling methods for studying complex geomechanical processes [51], [52].…”

Section: Introductionmentioning

confidence: 99%

Substantiating the rock mass control parameters based on the geomechanical model of the Severny Katpar deposit, Kazakhstan

Tolovkhan¹,

Demin²,

Amanzholov³

et al. 2022

Min. miner. depos.

View full text Add to dashboard Cite

Purpose. The research purpose is to develop a geomechanical model for ensuring the safety of mining operations by determining the optimal slope angles and probabilistic assessment of the stability of the open-pit walls. Methods. Three-dimensional geomechanical models for surface mining of deposits have been developed based on calculations of the stability factor (safety factor SF) of the open-pit walls in the Rocscience program to determine the rock mass stress-strain state at the end of mining using the finite element method. The geological wireframe model (GWM) has been built on the basis of the available geological sections, horizon plans and the results of the engineering-geological surveys using the Surpac geoinformation system. Findings. Strength reduction factor (SRF) has been determined taking into account the physical-mechanical properties of rocks that constitute the near-wall mass. An assessment of the stability of walls according to the selected geological sections is given, taking into account the projected contour of the Severny Katpar open-pit walls. The calculation of the projected contour stability of the open-pit walls by several different methods has revealed that the open-pit walls are generally stable. The open-pit parameters at the end of mining have been determined. Originality. For the first time, it has been determined that in the Southern and South-Western area of the Severny Katpar open-pit wall in the horizons +700…+400, there is a decrease in SF from 1.18 to 1.41 due to the predominant occurrence of siltstones and tectonic disturbances of the walls. Practical implications. The mathematical calculation results of the stability of the projected contour walls in the Severny Katpar open pit have been generalized. In addition, a geological and structural wire-frame model of the deposit has been developed, which makes it possible to ensure the safety of mining operations in the open pit.

show abstract

“…Аналіз останніх досліджень і публікацій. Дослідженню проблеми застосування сучасних досягнень інженерно-технічної науки присвячені праці П. І. Барана, А. Г. Батракової, Б. Д. Бачишина, К. О. Бурака, В. Г. Бурачека, C. П. Войтенка, О. Л. Дорожинського, С. Д. Крячка, О. Є. Куліковської, К. Р. Третяка, Р. В. Шульца, Г. П. Хохлова та інших вітчизняних вчених [1][2][3][4][5][6][7][8][9][10][11][12].…”

unclassified

“…Особливістю геодезичних робіт при супроводі будівництва [10] є необхідність створення геодезичної основи необхідної точності та геодезичного забезпечення монтажних робіт для зв'язку різних етапів будівництва. Застосування класичних методів потребує розширення існуючої геодезичної основи до території будівельних майданчиків, що збільшує обсяг і терміни проведення робіт з геодезичного забезпечення будівництва.…”

unclassified

Features of Application of Modern Geodesic Technologies in Constructing

Mikhno¹,

Lisovenko²,

Bushuiev³

et al. 2022

TST

View full text Add to dashboard Cite

The article analyzes the general approaches to the application of modern engineering surveyingtechnologies for the needs of construction in Ukraine. The study involves a review and analysis of modern research and current regulatory requirements in the field of geodetic support of the construction process.The development of engineering surveyingin Ukraine is characterized by the lag of the current norms of geodetic support of construction from the latest measuring instruments and geodetic technologies. To improve the accuracy of work and reduce its performance time, it is necessary to use modern advances in science and technology.In case of necessity of updating of planning and cartographic material the actual question of a choice of means and technology of performance of topographic survey for drawing up of topographic plans of scale 1:500 arises. In the process of high-precision mapping of buildings and structures for the collection and processing of information requires a combination of methods of photogrammetry and analytical methods of geoinformatics.Electronic automatic sensors of deviations of structures from vertical and horizontal with the possibility of remote data transmission and notification of exceeding the permissible deviations of the control parameter are used to measure the relative position of individual structures of complex structures and operational tracking of deformation displacements.At the present stage of development of construction technologies it is necessary to take into account and correctly assess the impact of the widest possible range of external factors on the accuracy of geodetic works.One of the main tasks of today's engineering surveyingin general is to develop new algorithms and means of communication for surveyors and builders for rapid transmission of information, timely analysis of real-time measurement results and making necessary adjustments to the construction process.Research related to the development of software modules to automatically take into account the impact of various sources of error in the results of geodetic measurements requires further development.The article is a publication of scientific and methodical character.

show abstract

Analysis of the displacements of pipeline overpasses based on geodetic monitoring results

Cited by 9 publications

References 26 publications

Analysis of corrosion fatigue steel strength of pump rods for oil wells

Analysis of corrosion fatigue steel strength of pump rods for oil wells

Substantiating the rock mass control parameters based on the geomechanical model of the Severny Katpar deposit, Kazakhstan

Features of Application of Modern Geodesic Technologies in Constructing

Contact Info

Product

Resources

About