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Journal articles on the topic 'Vertical Electrical Drilling'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Xu, Shu Qian, Ruo Ming Chen, Cai Yun Ai та ін. "Φ311 Automatic Vertical Drilling System". Advanced Materials Research 339 (вересень 2011): 611–16. http://dx.doi.org/10.4028/www.scientific.net/amr.339.611.

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During drilling, how to achieve the aim of deviation control and fast drilling effectively is a common technique issue. Though there are some anti-deviation and well straightening methods at present in drilling fields, most of them have their disadvantages, such as decreasing the weight on bit (WOB) and the rate of penetration (ROP). These drilling methods can’t achieve the aim of deviation control and fast drilling economically and effectively in high dip, fractured, fault zones, and other abnormal formations. . Automatic Vertical Drilling System (AVDS) is a Mechanical-Electrical-Hydraulic in

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D A, Ogwu, Molua O C, Ighodalo E.J, and Edobor M. "Hydrogeophysical Investigation of Aquifer Layers in Nkporo, Ohafia Local Government Area." Journal of Energy Engineering and Thermodynamics, no. 24 (July 5, 2022): 8–15. http://dx.doi.org/10.55529/jeet.24.8.15.

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Drilling a borehole in Nkporo area of Ohafia in Abia state without proper investigation may lead to wasting resources if water bearing formation is not achieved. This is because borehole drilling is very expensive. It is therefore necessary to carry out proper hydro-geophysical investigation in order to identify a good aquifer before borehole drilling. Electrical resistivity method has been chosen for the investigation of the water bearing formation. The use of Schlumberger array (Vertical Electrical Sounding (VES)) method of electrical resistivity was chosen based on the geology of the study

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3

Rehman, Syed Raza, Alap Ali Zahid, Anwarul Hasan, Ibrahim Hassan, Mohammad A. Rahman, and Sayeed Rushd. "Experimental Investigation of Volume Fraction in an Annulus Using Electrical Resistance Tomography." SPE Journal 24, no. 05 (2019): 1947–56. http://dx.doi.org/10.2118/194211-pa.

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Summary Horizontal drilling technology has shown to improve the production and cost–effectiveness of the well by generating multiple extraction points from a single vertical well. The efficiency of hole cleaning is reduced because of the solid–cuttings accumulation in the annulus in cases of extended–reach drilling. It is difficult to study the complex flow behavior in a drilling annulus using the existing visualization techniques. In this study, experiments were carried out in the multiphase flow–loop system consisting of a simulated drilling annulus using electrical resistance tomography (ER

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Firmansyah, Rian, Firman Yasa Utama, Arya Mahendra Sakti, and Diah Wulandari. "Perancangan Mekanisme Komponen Automatic Switch Vertical Drilling Machine KTK LGT-360." Jurnal Rekayasa Mesin 9, no. 01 (2024): 290–95. https://doi.org/10.26740/jrm.v9i01.62557.

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Dalam penelitian ini, mesin bor yang digunakan yaitu mesin bor KTK LGT-360 dengan kondisi sistem kerja mesin yang masih berbentuk manual. Penelitian ini bertujuan untuk merancang komponen automatic switch dan perakitan pada mesin bor vertikal semi otomatis KTK LGT-360. Metode yang digunakan adalah Research and Development (R&D) yang bertujuan untuk memastikan bahwa produk yang dihasilkan tidak hanya inovatif tetapi juga dapat diimplementasikan sesuai fungsi. Proses perancangan hanya melibatkan tiga komponen utama pada vertical drilling machine KTK LGT-360 semi otomatis, yaitu motor listrik

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Sukhorukova, K. V., I. V. Surodina, and O. V. Nechaev. "Results of numerical modeling of the effect of vertical fractures on electrical logging data." Russian Journal of Geophysical Technologies, no. 4 (March 7, 2024): 53–63. http://dx.doi.org/10.18303/2619-1563-2023-4-53.

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Based on the results of numerical modeling, the effect of vertical drilling-induced fractures on the data of galvanic electrical logging methods is considered. Geoelectric models represent a space with different resistivity values, a well and axisymmetric fractures filled with drilling fluid. The effect of fractures limited in radial depth on galvanic logging data leads to a change in signals similar to the change opposite the formation with a penetration zone located within the fracture interval. Based on the on gradient probes and focused logging data, a model of both a formation with an inv

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Cook, Ann E., Barbara I. Anderson, Alberto Malinverno, Stefan Mrozewski, and David S. Goldberg. "Electrical anisotropy due to gas hydrate-filled fractures." GEOPHYSICS 75, no. 6 (2010): F173—F185. http://dx.doi.org/10.1190/1.3506530.

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In 2006, the Indian National Gas Hydrate Program Expedition 01, or NGHP-01, discovered gas hydrate as fill in near-vertical fractures in unconsolidated sediments at several drilling sites on the Indian continental margins. These gas hydrate-filled fractures were identified on logging-while-drilling resistivity images. The gas hydrate-filled fracture intervals coincide with high measured resistivity at the NGHP-01 sites. High measured resistivity translates into high hydrate saturations via Archie’s equation; however, these high saturations contradict lower gas hydrate saturations determined fr

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7

Jonah, Sunday Adole. "INQUIRY FOR SUITABLE LOCATIONS FOR A DRILLING REGIME AT AN UPSLOPE ROCKY KNOLL OF LAWU ESTATE, WESTERN BYPASS, MINNA, NIGERIA." SOUTHERN JOURNAL OF SCIENCES 33, no. 39 (2025): 1–11. https://doi.org/10.48141/2764-5959.01.v33.n39.2025_sunday_pgs_1_11.pdf.

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Background: A client requested that the study group help determine locations that would be suitable for a drilling regime at his lot, located at an upslope rocky knoll of Lawu Estate, Minna, Nigeria. Aim: The aim of this study is to carry out a purpose-specific survey to pinpoint the best locations in a built-up property at the upmarket Lawu Estate that would be suitable for a drilling regime targeted for household consumption. Methods: The study area was reconnoitered by the survey crew in order to georeference the locations that would be occupied for the vertical electrical sounding survey i

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8

Patwari, Anayet U., Wasib Ul Navid, Rahman Maruf Morshed, Sakib Showkhin, and Shah Alam Bhuiyan. "Improvement of drilled holes quality by voice-activated ultrasonic vibration assisted drilling process of different orientation." Journal of Physics: Conference Series 2762, no. 1 (2024): 012027. http://dx.doi.org/10.1088/1742-6596/2762/1/012027.

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Abstract Ultrasonic drilling enables drilling in difficult-to-machine materials, including ceramics and composites, with greater accuracy and precision. The localized and controlled energy application of ultrasonic frequency minimizes the risk of material fracture, cracks, or delamination. This capability ensures that the drilled hole maintains its intended dimensions, shape, and integrity, resulting in improved hole accuracy and overall drilled hole condition. Ultrasonic drilling is an advanced machining technique that utilizes high-frequency vibrations to improve the drilling process. In thi

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9

Salimi, Payam, Asghar Teymoorian Motlagh, and Kamran Rahimi Bisetooni. "Exploration of Bitumen (Natural Asphalt) using a combination of apparent Resistivity method and exploration drilling in Saleh-Abad area, Ilam Province Iran." JOURNAL OF ADVANCES IN NATURAL SCIENCES 1, no. 1 (2014): 16–21. http://dx.doi.org/10.24297/jns.v1i1.381.

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Bitumen is a hydrocarbon material that accumulates near the earth's surface in the form of asphalt springs or in other forms under the act of hydrostatic pressures of oil reservoirs, it will form bitumen mines after undergoing polymerization process. This mineral (organic) matter is in close relationship to oil reservoirs present in the area, i.e. when oil moves or migrates from one place to another place some part of it will be separated and will remain in the form of streaks, lenses and etc. In this work, the exploration of bitumen resources in Saleh-Abad area, Ilam is carried out using geoe

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10

Mohamed, Abdelmjeed, Salem Basfar, Salaheldin Elkatatny, and Abdulaziz Al-Majed. "Prevention of Barite Sag in Oil-Based Drilling Fluids Using a Mixture of Barite and Ilmenite as Weighting Material." Sustainability 11, no. 20 (2019): 5617. http://dx.doi.org/10.3390/su11205617.

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Drilling high-pressure high-temperature (HPHT) wells requires a special fluid formulation that is capable of controlling the high pressure and is stable under the high downhole temperature. Barite-weighted fluids are common for such purpose because of the good properties of barite, its low cost, and its availability. However, solids settlement is a major problem encountered with this type of fluids, especially at elevated downhole temperatures. This phenomenon is known as barite sag, and it is encountered in vertical and directional wells under static or dynamic conditions leading to serious w

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11

Jasim, Saade Abdalkareem, Khaldoon T. Falih, Ahmed Kateb Jumaah Al-Nssairi, Ola Kamal A. Alkadir, Yasser Fakri Mustafa, and Li Yang. "Prediction of Fractures and Cracks to Improve the Drilling Operations." Asian Journal of Water, Environment and Pollution 19, no. 1 (2022): 59–65. http://dx.doi.org/10.3233/ajw220009.

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The term fracture is defined in different ways in geology; some definitions have a defining aspect, while other definitions have dealt with this issue in more detail. There may be differences in appearance and strength that distinguish them from each other, generally in the drawings of an illustrator diagram. According to electrical logs such as formation micro-imager (FMI), fractures are seen in three vertical fractures, polygonal fractures and mechanical fractures. In this paper, different types and methods of diagnosis of each fracture were evaluated. Moreover, by showing examples of these

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Yusuf, Sani, Ngo Killian Ayuni, Usman Ali, and Sale Samuel. "Geophysical investigation of groundwater potential using vertical electrical sounding at a West African location." International Research Journal of Advanced Science 1, no. 1 (2020): 7–12. https://doi.org/10.5281/zenodo.5071367.

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The determination of groundwater potential using vertical electrical sounding (VES) was carried out at the undeveloped site of a West African location at the federal university of Wukari in Taraba State of Nigeria. The research is aimed at delineating groundwater potential and identification of a suitable site for the drilling of a productive motorized borehole in the grounds of the university. The measurement was conducted using a terrameter SAS 300C. The collected data were analyzed using IP12WIN and surfer version 7.0 software. The geographical location of the area is bounded by latitude 7.

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13

Purwanto, Purwanto, Siti Hamidah, and Rina Sri Lestari. "Identification of the Aquifer Type to Determine the Location of Groundwater Drilling in Karangsari Village, Kulonprogo Regency, Special Region of Yogyakarta." RSF Conference Series: Engineering and Technology 1, no. 1 (2021): 01–08. http://dx.doi.org/10.31098/cset.v1i1.331.

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Kulonprogo Regency is area that have an existing problem with clean water resource. This water resource distribution influed by the rock formation of this area and can be overcome with developing groundwater source. This research was conducted with the aim of determining the location of groundwater drilling that can meet the availability of clean water for the area. The method used is geoelectrical measurement using the Schlumberger method, by Vertical Electrical Sounding (VES) method. The best drilling point is at KP 05.3 with aquifer resistance value is 20.20 ohm-m at a dept of 53-70 m and 4

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14

Widodo, Priyo, Hadi Utomo, Yekti Utami, Mazda Aina Sukowati, and Waterman Sulistyana Bargawa. "Main Aquifer Analysis Using Vertical Electrical Sounding to Determine the Location of Drilling Well." RSF Conference Series: Engineering and Technology 1, no. 1 (2021): 95–104. http://dx.doi.org/10.31098/cset.v1i1.377.

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Water is an important aspect of life. People need clean water for their household needs. Problems arise when the supply of clean water does not meet the needs of the community as felt by the residents of Madurejo Village, Prambanan District, Sleman Regency, Yogyakarta. In the dry season, the groundwater level decreases so that the air supply decreases. This study aims to analyze the existence of aquifers that can meet the needs of the community throughout the year. This research has a research flow starting from surveys, field orientation, field measurements, analysis of measurement results, t

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Luthfin, A., L. Izza, I. N. Alfania, Irjan, and M. M. Munir. "Identification of Aquifer Layers Using Geoelectric Methods Based on Vertical Electrical Sounding (VES) in Dengkol Village." IOP Conference Series: Earth and Environmental Science 1439, no. 1 (2025): 012013. https://doi.org/10.1088/1755-1315/1439/1/012013.

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Abstract Dengkol Village, Malang Regency, East Java, is an area that is known to be difficult to get water sources or is a red zone for well drillers, because there are several excavation points that fail to get water. The depth of the existing well is close to 100m, dominated by hard rock, so drilling costs in this area are quite expensive. This research aims to determine the depth of the aquifer layer at the research location, so that it can be used as a reference in drilling wells at that location. This research was carried out using the geoelectric VES method with a schlumberger configurat

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16

Zhu, Lin, and Wei Huang. "Research on the Inner Wall of the Blind Hole Drilling Device." Open Mechanical Engineering Journal 8, no. 1 (2014): 332–34. http://dx.doi.org/10.2174/1874155x01408010332.

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This article describes the structure and working principle of the blind hole drilling device through application in the production practice proving its feasibility. At present, electrical discharge machining and welding method are commonly used to solve the problem. However, these methods have low processing efficiency, low manufacturing precision and high cost defect. This paper developed an inner wall of the blind hole drilling device, similar to stand-alone machine accessories and adopted the bevel gear transmission which can directly be mounted on vertical or horizontal milling machine, co

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Maharaj, Ronald, Sushil Kumar, Nicholas Rollings, and Andreas Antoniou. "Groundwater Detection Using Resistivity at Nubutautau Village in Viti Levu in Fiji." Water 15, no. 23 (2023): 4156. http://dx.doi.org/10.3390/w15234156.

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A geophysical method, electrical resistivity tomography, was applied to identify potential groundwater-bearing zones around Nubutautau village on Viti Levu island, Fiji. Apparent resistivity data of the subsurface were collected through an electrode assembly along survey lines by injecting current into the subsurface using an ABEM Terrameter LS2. The apparent resistivity data were inverted using Res2DINVx64 software to produce the final electrical resistivity through an iterative process to compare the resistivity of layers and draw analogical hydrogeological results. Analysis revealed the pre

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18

Ejike, Chinedu, Immanuel Frimpong Obuobi, Simon Avinu, Khizar Abid, and Catalin Teodoriu. "Investigation and Analysis of Influential Parameters in Bottomhole Stick–Slip Calculation during Vertical Drilling Operations." Energies 17, no. 3 (2024): 622. http://dx.doi.org/10.3390/en17030622.

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The critical factors that affect bottomhole stick–slip vibrations during vertical drilling operations are thoroughly investigated and analyzed in this research. Influential factors, such as rotation speed, weight on bit (WOB), bottom hole assembly (BHA) configuration, and formation properties, were studied in order to understand their part in the stick–slip phenomena. The analysis is based on a thorough review of previous research conducted on stick–slip drilling vibrations. A mathematical model was created that not only explains axial vibrations but also includes the torsional vibrations pres

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19

Ojo, A., E. Babafemi, E. Faleye, and O. Shado. "Integrating Resistivity Techniques for Optimum Groundwater Exploration and Development within a Hotel Facility in Osogbo, Southwestern Nigeria." Journal of Applied Sciences and Environmental Management 25, no. 2 (2021): 233–38. http://dx.doi.org/10.4314/jasem.v25i2.15.

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This work is an attempt to combine dipole-dipole profiling and vertical electrical sounding techniques of electrical resistivity methods to investigate the groundwater potential within the premises of a 3-star hotel facility in Osogbo, Nigeria by delineating the geoelectric layers, delineating the low resistivity layers, determining the lithologies and hence, delineating the groundwater bearing zones. The five vertical electrical sounding data were collected along two pre-surveyed dipole-dipole traverses at right angle to each other beside the fences of the premises using the ABEM SAS 300c ter

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20

Ojo O. F., Ujah S. A., Murana K. A., Ogunlana F. O., Faleye E. T., and Adeniran, M. A. "Correlation of Schlumberger Array Geoelectric Log with Borehole Lithologic Log in Ekiti State University Campus, Ado Ekiti, Ekiti State, Nigeria." International Journal of Latest Technology in Engineering Management & Applied Science 13, no. 5 (2024): 106–12. http://dx.doi.org/10.51583/ijltemas.2024.130510.

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Correlation of the schlumberger array geoelectric logs interpreted from Vertical Electrical Sounding (VES) data acquired in Ekiti State University Campus with borehole litholigic logs from the same area was done with the aim of establishing a mathematical relationship between the two logs. The study area is located within the basement complex of southwestern Nigeria, where occurrence of groundwater is limited to specific localized and enclosed regions within the weathered or fractured zones. Therefore, thorough geophysical surveys before drilling become necessary. The availability of borehole

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Issah, Mohammed Mansuru, Akwasi Acheampong Aning, Reginald Mensah Noye, and Patrick Amankwaa Mainoo. "Prospecting for Groundwater Using the Continuous Vertical Electrical Sounding Method." European Scientific Journal, ESJ 14, no. 3 (2018): 67. http://dx.doi.org/10.19044/esj.2018.v14n3p67.

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2-D CVES surveys using the Wenner configuration was carried out in 22 communities in the Tain District, Ghana. This was done with the objectives of assessing the subsurface geology, identify high groundwater potential zones for drilling high-yielding boreholes that could yield sustainable amount of groundwater. The collected resistivity data were converted from the apparent resistivity to 2-D modelsection using the least-square inversion algorithm with the help of Res2DInv software. The 2-D resistivity model-sections produced a high quality structural resolution leading to the demarcation of t

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Xia, Feng, Jian Ping Li, Gao Hong Li, and Man Zhu. "Study on the Residual Stress of LY12 Welded Component." Advanced Materials Research 602-604 (December 2012): 2114–17. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.2114.

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In this paper, the distribution law of residual stress normal to the welding joint in LY12 aluminum alloy was measured by the combination use of hole drilling and electrical-measurement method. The experimental results indicated that it was an effective way to measure the residual stress of LY12 aluminum alloy with thickness of 6 mm by applying hole drilling. The distribution of residual stress vertical to welding joint is quite obvious. The residual stress increases as the distance away from the welding joint decreases. The value of the longitudinal residual stress is higher than that of the

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Pihulevskyi, Petro, Andrii Lozovyi, Oleh Tiapkin, Larysa Anisimova, and Serhii Kravets. "Using geoelectric measurements to solve mining and hydrogeological problems." IOP Conference Series: Earth and Environmental Science 1491, no. 1 (2025): 012054. https://doi.org/10.1088/1755-1315/1491/1/012054.

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Abstract The article deals with the methodology and results of electrometric study of the specific electrical resistivity of rocks to assess: rock mass; formation of weakened zones that cause changes in the hydrodynamic regime of groundwater; determination of the boundaries of waterlogged areas; identification and mapping of discontinuous faults. Observations were made using the methods of vertical electrical sounding and electrotomography. The electrotomography was used to detail the geoelectric section, which differs significantly from the horizontal-layer section, which is typical for ore z

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Agbasi, Okechukwu Ebuka, Nadia Ahmed Aziz, Zaidoon Taha Abdulrazzaq, and Sunday Edet Etuk. "Integrated Geophysical Data and GIS Technique to Forecast the Potential Groundwater Locations in Part of South Eastern Nigeria." Iraqi Journal of Science 60, no. 5 (2019): 1013–22. http://dx.doi.org/10.24996/ijs.2019.60.5.11.

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The objective of this research is to select the most suitable drilling location of new groundwater exploration wells, with a decision-making tool from Geographic Information System (GIS). The optimum location will be evaluated base on the hydro-geoelectrical parameter derived from Vertical Electrical Sound (VES) including Longitudinal Conductance, the thickness of the aquifer, the apparent resistivity and Transmissivity. From the Geo-electrical method (VES) the finds shows that the aquifers in the study area have Apparent Resistivity ranging from 0.32 to 40.24 Î©m, Thickness between 0.21 m to

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Emmanuel, Adeniyi Ariyo, Osisanya O. Wasiu, and Moses Oghenenyoreme Eyankware. "DELINEATION OF GROUNDWATER POTENTIAL USING ELECTRICAL RESISTIVITY IMAGING TECHNIQUES AT IBULE AKURE, SOUTHWESTERN NIGERIA." Malaysian Journal of Geosciences 8, no. 1 (2024): 01–09. https://doi.org/10.26480/mjg.01.2024.01.09.

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Population growth and heightened water demand in the study area, exacerbated by insufficient surface and groundwater resources, lead to severe water shortages, particularly during the dry season. In response, our study in Atibioke Street, Aule Road, Ibulesoro, Akure, Ondo State, employed Horizontal Profiling (HP) and Vertical Electrical Sounding (VES) with electrical resistivity methods. Conducted across three traverses at 5m intervals, with probing levels from 1 to 5, the Combined HP and VES generated 2-D pseudosections, highlighting features and conducive layers for groundwater accumulation.

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Yusuf, Solomon Nehemiah, Hilnan Christopher Drenkat, and Charity Mamza Azi. "Groundwater Exploration Using Vertical Electrical Sounding And 2D Electrical Resistivity Tomography In Shale Formation: A Case Study Of Sabongida, Plateau State, North Central Nigeria." Warta Geologi 48, no. 1 (2022): 10–22. http://dx.doi.org/10.7186/wg481202202.

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Sabongida is characterized by lots of abortive boreholes which are often shallow as a result of the complex nature of shale formation in the area and limited application of integrated geophysical techniques before drilling of boreholes. The presence of shale formation in the area makes it extremely difficult to drill productive boreholes, while the existing hand dug wells are always shallow due to the difficulty in digging deeper wells, this and other factors motivated the choice of the study location for the purpose of proffering solutions to solve the perennial water problem in the area. Twe

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Barton, C. A., D. A. Castillo, D. Moos, P. Peska, and M. D. Zoback. "CHARACTERISING THE FULL STRESS TENSOR BASED ON OBSERVATIONS OF DRILLING-INDUCED WELLBORE FAILURES IN VERTICAL AND INCLINED BOREHOLES LEADING TO IMPROVED WELLBORE STABILITY AND PERMEABILITY PREDICTION." APPEA Journal 38, no. 1 (1998): 466. http://dx.doi.org/10.1071/aj97023.

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To minimise wellbore failures in unstable environments, knowledge of the complete stress tensor is crucial to designing optimally-stable borehole trajectories, selecting suitable mud weights, and determining appropriate casing points. Understanding how the in situ stress field interacts with the drilling and production of a well enables one to design for maximum stability and to facilitate intersecting the greatest population of hydraulically-conductive fractures for efficient production. Knowledge of the in situ stress field is also important to reduce uncertainties in sand production predict

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Barton, Colleen A., and Mark D. Zoback. "Discrimination of Natural Fractures From Drilling-Induced Wellbore Failures in Wellbore Image Data - Implications for Reservoir Permeability." SPE Reservoir Evaluation & Engineering 5, no. 03 (2002): 249–54. http://dx.doi.org/10.2118/78599-pa.

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Summary Natural fractures and drilling-induced wellbore failures provide critical constraints on the state of in-situ stress and the direct applicability to problems of reservoir production, hydrocarbon migration, and wellbore stability. Acoustic, electrical, and optical wellbore images provide the means to detect and characterize natural fracture systems and to distinguish them from induced wellbore failures. We present new techniques and criteria to measure and characterize attributes of natural and induced fractures in borehole image data. These techniques are applied to the characterizatio

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Elkatatny, Salaheldin. "Enhancing the Stability of Invert Emulsion Drilling Fluid for Drilling in High-Pressure High-Temperature Conditions." Energies 11, no. 9 (2018): 2393. http://dx.doi.org/10.3390/en11092393.

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Drilling in high-pressure high-temperature (HPHT) conditions is a challenging task. The drilling fluid should be designed to provide high density and stable rheological properties. Barite is the most common weighting material used to adjust the required fluid density. Barite settling, or sag, is a common issue in drilling HPHT wells. Barite sagging may cause many problems such as density variations, well-control problems, stuck pipe, downhole drilling fluid losses, or induced wellbore instability. This study assesses the effect of using a new copolymer (based on styrene and acrylic monomers) o

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Epov, M. I., S. A. Primakov, K. V. Sukhorukova, and D. S. Lezhnin. "Geoelectric Models of Lower Cretaceous Deposits of the Latitudinal Ob Region Based on the Results of Multilayer Inversion of Electrical Logging Data." Georesources 26, no. 4 (2025): 153–62. https://doi.org/10.18599/grs.2024.4.19.

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The article considers the results of applying a multi-layer approach to the quantitative interpretation of electrical and induction logging data in vertical wells for formation evaluation of the Achimov formation in the central part of Western Siberia. Interpretation of electrical logging data by conventional methods often leads to errors in estimating the oil saturation of thin reservoirs due to the complex apparent resistivity logs, which are significantly influenced by the high-contrast invaded zones and shoulder beds. The approach proposed at Institute of Petroleum Geology and Geophysics o

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Samodra, S. B., R. T. Sembiring, G. R. Ramadhan, H. A. Kharis, and T. R. Siregar. "Groundwater potential zones identification in Purwobinangun, Pakem, Sleman, D.I. Yogyakarta using vertical electrical sounding (VES)." IOP Conference Series: Earth and Environmental Science 851, no. 1 (2021): 012023. http://dx.doi.org/10.1088/1755-1315/851/1/012023.

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Abstract Water is crucial part in tourism development. However, not all locations have good and accessible groundwater resources. Ngepring Vineyard in Purwobinangun Village, Pakem District, Sleman, Yogyakarta face this problem. Ngepring vineyard is a developing tourism area at southern mountainside of Merapi which is one of geotourism destination in Indonesia. In its development, there were obstacles to fulfill the water supply for tourism and locals’ daily use. This research aims to determine groundwater potential zone and recommend a drilling point for a new well. Geoelectric resistivity sur

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Sarker, Md Mizanur Rahman, Marc Van Camp, Thomas Hermans, et al. "Geophysical Delineation of Freshwater–Saline Water Interfaces in Coastal Area of Southwest Bangladesh." Water 13, no. 18 (2021): 2527. http://dx.doi.org/10.3390/w13182527.

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Insufficiency of potable water is acute in southwest (SW) coastal areas of Bangladesh. The local population ignores the depth to saltwater/freshwater interface causing many unsuccessful waters wells drilling. In this context, a combined use of borehole logs, geophysical well logs, vertical electrical soundings (VES), electrical resistivity tomography (ERT) and electrical conductivity (EC) of sampled waters was performed to identify saltwater/freshwater interface depths in this coastal part. The study shows that the depth to freshwater/saltwater interface varies from place to place occurring co

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Yang, Fan, Guowei Han, Jian Yang, et al. "Research on Wafer-Level MEMS Packaging with Through-Glass Vias." Micromachines 10, no. 1 (2018): 15. http://dx.doi.org/10.3390/mi10010015.

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A MEMS fabrication process with through-glass vias (TGVs) by laser drilling was presented, and reliability concerns about MEMS packaging with TGV, likes debris and via metallization, were overcome. The via drilling process on Pyrex 7740 glasses was studied using a picosecond laser with a wavelength of 532 nm. TGVs were tapered, the minimum inlet diameter of via holes on 300 μm glasses was 90 μm, and the relative outlet diameter is 48 μm. It took about 9 h and 58 min for drilling 4874 via holes on a four-inch wafer. Debris in ablation was collected only on the laser inlet side, and the outlet s

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Torno, Susana, and Javier Toraño. "Increasing Safety in an Underground Coal Mine through Degasification by Vertical Wells—Influence of the Relationship between the Permeability of Carbon and the Filter Cake of the Bentonite Suspension." Energies 16, no. 21 (2023): 7223. http://dx.doi.org/10.3390/en16217223.

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The Hullera Vasco Leonesa (HVL) underground coal mine in northern Spain is subject to violent methane (CH4) outbursts. Vertical wells are used to extract CH4 from coal layers to improve mine safety. Bentonite suspensions are used as drilling fluids in this degasification system. The relationship between the soil and filter cake permeabilities, the filter cake thickness, and the filtrate loss significantly affects the fluid’s rheological properties. Fann mud balance, marsh funnel viscometer, and Fann 300 press filter tests have been carried out to determine the rheological properties of the ben

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Ma, Chaoqun, Kai Zhang, Baolin Liu, Yue Wang, Chenyan Yan, and Lin Chai. "Optimization Research for the Adjusting Device of the Mechanical Vertical Drilling Tool Based on the Adjusting Torque." Machines 11, no. 5 (2023): 509. http://dx.doi.org/10.3390/machines11050509.

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The utilization of the adjusting device has been shown to significantly enhance the precision and stability of the mechanical vertical drilling tool. However, the inappropriate size of the structural parameters of the adjusting device will greatly affect its performance. Therefore, further improvements are necessary in order to optimize its performance. In order to achieve this, a thorough examination of the working principle and the various factors that influence the adjusting device is crucial. Through simulation and experimental methods, the function of the adjusting device was evaluated an

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Sukhorukova, K. V., A. M. Petrov, and O. V. Nechaev. "GEOELECTRIC MODELS OF CRETACEOUS RESERVOIRS OF WEST SIBERIA BY THE RESULTS OF INTEGRATED INTERPRETATION OF ELECTRIC LOG DATA." Geology and mineral resources of Siberia, no. 3 (2020): 77–86. http://dx.doi.org/10.20403/2078-0575-2020-3-77-86.

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The results of testing a new software-methodological complex of numerical inversion on the data of electrical logging, measured in vertical wells in the intervals of Cretaceous reservoirs in West Siberia. They are characterized by a complex radial profile of electrical resistivity, electrical anisotropy and polarizability. As a result of the quantitative interpretation of a set of electrical (LLS) and electromagnetic (VEMLS) logging data, realistic geoelectric models of sedimentary deposits of the Latitudinal Ob Region were constructed, and the relationships between electrical anisotropy and d

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R.G Bhagyawant, R.S. Dhotre, S.D. Gorantiwar, and K.J. Kamble. "Reliability of Resistivity Method of Prospecting Groundwater in Hard Rock Region." Journal of Agricultural Engineering (India) 44, no. 1 (2007): 82–84. http://dx.doi.org/10.52151/jae2007441.1246.

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A study was conducted to determine the reliability of electrical resistivity method of ground water explorations at 'farmers' field in under hard rock region in Rahuri Tahsil of district Ahmednagar (Maharashtra). In this method, vertical electrical soundings with Schlumberger array were carried out at forty locations in the area. The data gathered from this method at each sounding were interpreted by curve break method for finding the depth of soil formations. The interpreted data were compared with the actual observations recorded during the drilling process at 15 locations. The method was fo

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Guo, Qian, Yonghao Pang, Rentai Liu, Bin Liu, and Zhengyu Liu. "Integrated Investigation for Geological Detection and Grouting Assessment: A Case Study in Qingdao Subway Tunnel, China." Journal of Environmental and Engineering Geophysics 24, no. 4 (2019): 629–39. http://dx.doi.org/10.2113/jeeg24.4.629.

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Subway tunnel construction plays a significant role in the development of urban underground space. Advance surface grouting treatment of adverse subsurface geological bodies is an effective measure to avoid the accidents during subway construction. This paper describes the successful application of geological prospecting and grouting assessment at the tunnel site of Qingdao subway line No. 1. The study area is located in a coastal bedrock fissure water distribution area. It was decided to conduct surface grouting to reduce the high risk of water inrush. Integrated investigation consisting of e

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Spry, David J., Philip G. Neudeck, Liang-Yu Chen, et al. "Processing and Characterization of Thousand-Hour 500 °C Durable 4H-SiC JFET Integrated Circuits." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2016, HiTEC (2016): 000249–56. http://dx.doi.org/10.4071/2016-hitec-249.

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Abstract This work reports fabrication and testing of integrated circuits (ICs) with two levels of interconnect that consistently achieve greater than 1000 hours of stable electrical operation at 500 °C in air ambient. These ICs are based on 4H-SiC junction field effect transistor (JFET) technology that integrates hafnium ohmic contacts with TaSi2 interconnects and SiO2 and Si3N4 dielectric layers over ~ 1-μm scale vertical topology. Following initial burn-in, important circuit parameters remain stable for more than 1000 hours of 500 °C operational testing. These results advance the technology

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Aweda, Abdulwahid Kolawole, Ibrahim Kagara Shehu, Olusegun Omoniyi Ige, Mohammed Umar Umar, and Joseph Barde David. "Application of geological and electrical resistivity methods for groundwater studies at Tatiko, North Central Nigeria." Global Journal of Geological Sciences 18 (June 25, 2020): 15–22. http://dx.doi.org/10.4314/gjgs.v18i1.2.

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The success probability of water wells constructed in crystalline rock terrains is largely dependent on the size, location and interconnectivity of the fractures present in them as well as the amount and nature of the material that may clog the fractures. Geological and geoelectrical studies were proposed and conducted at Tatiko to determine the structures in the underlying basement rocks and evaluate their groundwater potential. Geological study was used to delineate the structural control on groundwater availability while the geoelectrical study (Vertical Electrical Sounding) was used to inv

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Chai, Lin, Kai Zhang, Dengwen Yang, Baolin Liu, and Delong Zhang. "Integral Modeling for Deviation Correction Trajectory of the Mechanical Vertical Drilling System." Machines 9, no. 8 (2021): 161. http://dx.doi.org/10.3390/machines9080161.

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The deviation correction trajectory of the mechanical vertical drilling system (MVDS) is very important because it is the final embodiment of performance. However, it is impossible to obtain it at the design stage, except when using simulation methods. In this paper, tool face angle model and other theoretical models were established, respectively, and the trajectory simulation method was created through model coupling. Next, the method was used to simulate the trajectory of MVDS under two typical working conditions. The results indicate that the critical deviation angle is the deviation contr

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Cai, Zhixiang, Hui Zhang, Kerou Liu, Yufei Chen, and Qing Yu. "Experimental Investigation and Mechanism Analysis on Rock Damage by High Voltage Spark Discharge in Water: Effect of Electrical Conductivity." Energies 13, no. 20 (2020): 5432. http://dx.doi.org/10.3390/en13205432.

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High voltage spark discharge (HVSD) could generate strong pressure waves that can be combined with a rotary drill bit to improve the penetration rate in unconventional oil and gas drilling. However, there has been little investigation of the effect of electrical conductivity on rock damage and the fragmentation mechanism caused by HVSD. Therefore, we conducted experiments to destroy cement mortar, a rock-like material, in water with five conductivity levels, from 0.5 mS/cm to 20 mS/cm. We measured the discharge parameters, such as breakdown voltage, breakdown delay time, and electrical energy

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Asfahani, Jamal. "Vertical Electrical Sounding Technique as an Efficient and Rapid Tool for Groundwater Investigation in a Basaltic Environment at Kodana Station for the Shami goats. Case Study from Southern Syria." Geofísica Internacional 63, no. 2 (2024): 835–50. http://dx.doi.org/10.22201/igeof.2954436xe.2024.63.2.1442.

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Geoelectrical survey was conducted by using vertical electrical sounding technique (VES) with adapting Schlumberger configuration, to locate and drill a borehole for groundwater extraction in the Kodana station for the Shami goats, Southern Syria. An integrated approach is proposed to increase the efficacy of the VES technique and to reduce the uncertainties and the high failures in locating and drilling a successful groundwater borehole. The approach is essentially based on analyzing the Dar-Zarrouk (D-Z) parameters with constraining several conditions to obtain the optimum hydro-geophysical

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Elkatatny, Salaheldin, Ahmed Al-AbdulJabbar, and Khaled Abdelgawad. "A New Model for Predicting Rate of Penetration Using an Artificial Neural Network." Sensors 20, no. 7 (2020): 2058. http://dx.doi.org/10.3390/s20072058.

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The drilling rate of penetration (ROP) is defined as the speed of drilling through rock under the bit. ROP is affected by different interconnected factors, which makes it very difficult to infer the mutual effect of each individual parameter. A robust ROP is required to understand the complexity of the drilling process. Therefore, an artificial neural network (ANN) is used to predict ROP and capture the effect of the changes in the drilling parameters. Field data (4525 points) from three vertical onshore wells drilled in the same formation using the same conventional bottom hole assembly were

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Kim, Kwonye, Jaemin Kim, Yujin Nam, Euyjoon Lee, Eunchul Kang, and Evgueniy Entchev. "Analysis of Heat Exchange Rate for Low-Depth Modular Ground Heat Exchanger through Real-Scale Experiment." Energies 14, no. 7 (2021): 1893. http://dx.doi.org/10.3390/en14071893.

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A ground source heat pump system is a high-performance technology used for maintaining a stable underground temperature all year-round. However, the high costs for installation, such as for boring and drilling, is a drawback that prevents the system to be rapidly introduced into the market. This study proposes a modular ground heat exchanger (GHX) that can compensate for the disadvantages (such as high-boring/drilling costs) of the conventional vertical GHX. Through a real-scale experiment, a modular GHX was manufactured and buried at a depth of 4 m below ground level; the heat exchange rate a

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Singh, Dharmendra Kumar, and Nawal Kishore. "Geoelectrical Sounding to Identify Sub-surface and Groundwater State at Village Banauli, Singrauli District, Madhya Pradesh, India." Nature Environment and Pollution Technology 21, no. 4 (2022): 1639–47. http://dx.doi.org/10.46488/nept.2022.v21i04.016.

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Electrical resistivity (Geoelectrical) methods are well-known and common techniques for investigating the groundwater potential zone. These methods are economically viable and have the highest resolving power compared with other geophysical methods. A total of fifteen Vertical electrical soundings were conducted in the village of Banauli, located in Singrauli district in Madhya Pradesh, India. Vertical electrical sounding was carried out using Schlumberger electrode configuration with the maximum current electrode (AB) spacing of 200 m and potential electrode (MN) spacing of 10 m. For interpre

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47

K.O., Suleman, Ogunmola O.L., Adesina R.O., Adeoye T.O., and Sunmonu L.A. "GROUNDWATER EXPLORATION FOR WATER WELL SITES IN ABATA ASUNKERE COMMUNITY, ILORIN, NIGERIA." Malaysian Journal of Geosciences 7, no. 1 (2023): 18–21. http://dx.doi.org/10.26480/mjg.01.2023.18.21.

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In this study, Electrical resistivity investigation was carried out at different sections of Abata Asunkere Community, Ilorin, Nigeria with the aim of evaluating groundwater potential and properties of the aquifers. Geophysical technique adopted in this work were the Vertical Electrical Sounding (VES) and 2-D Electrical Resistivity Tomography (ERT) using Schlumberger array configuration. ERT was established on two profiles at the study area with total distance of 80 m apart with 5 m electrode spacing. Eight (8) VES points were sounded along the established profiles. The results revealed four g

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Morrow, Derek C., and Nick E. Jackson. "GOODWYN ‘A’ DRILLING FACILITIES." APPEA Journal 33, no. 1 (1993): 343. http://dx.doi.org/10.1071/aj92025.

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The Drilling Facilities Package designed and developed by Atwood Oceanics Australia Pty. Ltd. for operation on Woodside Offshore Petroleum Pty. Ltd.'s Goodwyn 'A' Platform will break new ground in the development and application of offshore modular drilling rig technology when commencement of offshore drilling is achieved. These facilities are among the largest, specifically designed, offshore demountable drilling rigs in the world today.Initially, Woodside performed sufficient engineering to determine a design specification for the Drilling Facilities which detailed the types of equipment nec

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Hassan, Mudassir, and Tasi'u Y. Rilwanu. "Geo-electrical investigation for groundwater exploration in basement complex terrain of Kaita Area, Katsina State, Nigeria." Caliphate Journal of Science and Technology 7, no. 1 (2025): 73–99. https://doi.org/10.4314/cajost.v7i1.8.

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Geophysical survey using vertical electrical sounding (VES) was carried out to explore groundwater prospecting areas in Kaita area, Katsina state. Data from nineteen (19) representative VES survey points using Schlumberger array configuration were acquired, processed and interpreted. The results revealed aquifer resistivity range from 55.7 to 4625 Ώm while aquifer thickness ranges between 0.792 to 21.7m. Depth to aquifer ranges between 1.16 to 22.1 m. The transverse resistance ranges between 75.752 and 34568.1 Ώm2 whereas the range of hydraulic conductivity is 0.147 to 9.088 m/day, likewise th

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Acworth, R. I. "Investigation of dryland salinity using the electrical image method." Soil Research 37, no. 4 (1999): 623. http://dx.doi.org/10.1071/sr98084.

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Electrical imaging is a 2-dimensional investigation method that can be used to rapidly determine subsurface conductivity variation. In dryland salinity studies, electrical imaging is used to define the vertical extent of high electrical conductivity zones first identified using electromagnetic (EM) profiling equipment. Field techniques are described using 25 or 50 electrodes, connected to a resistance meter by a multi-core cable, to obtain images at a variety of electrode separations. The model of electrical conductivity variation obtained by an inversion of the field data is shown to agree ve

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