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1
Content available Investigation of the Process of Mud Filtrate Invasion from an Open Wellbore into a Fresh Water Formation
Mandryk Oleg M., Mishchuk Bohdan, Zelmanovych Andrii I., Tyrlych Volodymyr V., Tuts Oleg M., Poberezhna Liubov
Ecological Engineering & Environmental Technology
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2021
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Vol. 22, iss. 4
53--65
EN
While developing hydrocarbon (oil and gas) deposits, it is necessary to drill into shallow formations of fresh (drinking) water, and this causes the filtrate invasion from the open wellbore into these formations. A mathematical model of this process was created; an analysis of the influence of the identified by the process features filtration zones was performed, and it was shown that the zones of the mud crust and interstitial colmatation are dominant. The filtrate invasion can significantly impair the quality of fresh water and cause environmental damage.
2
Content available Personnel certification as a necessary condition for enterprise’ staff development
Kis Sviatoslav, Mosora Larysa, Mosora Yurii, Yatsiuk Oleh, Malynovska Galyna, Pobihun Serhii
Management Systems in Production Engineering
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2020
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nr 2 (28)
121--126
EN
The theoretical research and substantiation of specialists compliance estimation with corporate requirements on the basis of international certification and determination of its role in the system of enterprise’ staff management are carried out in the article. The algorithm of the enterprise’ effect achievement of the preliminary international certification of the personnel involved in oil and gas wells drilling is offered. The relationship between the number of persons trained and certified by International Well Control Forum in Drilling Simulation Center of the Ivano-Frankivsk National Technical University of Oil and Gas and the volume of drilling of oil and gas wells in Ukraine is analyzed. The task was accomplished by means of correlation and regression analysis. The results of the calculations allow us to make sufficiently plausible assumptions about the impact of training and certification on drilling volumes. It is established that the increase in the number of persons certified according to International Well Control Forum for one person will allow to expect the volume of drilling of oil and gas wells by 0.734 thousand metres per year.
3
Content available Drilling intake wells in carbonate formations to provide water for drilling purposes
Macuda Jan, Łukańko Łukasz
AGH Drilling, Oil, Gas
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2020
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Vol. 37, no. 1
5--12
EN
The realization of drilling works oriented towards the prospection and extraction of hydrocarbons from conventional and unconventional resources requires the supply of large amounts of water for technological purposes and fracturing jobs in shale formations. One of the important sources of water supply for wellbores may be useful groundwater levels taken in by deep wells. Technological processes accompanying drilling works and other technological operations require large amounts of water in a short period of time. The possibility of drilling intake wells at the drilling site significantly reduces the costs of acquiring the necessary quantities of water and facilitates its transfer to technological installations. Such wells must have high yields. Accordingly, this necessitates drilling wells with a relatively large diameter to accommodate filters with a large active surface area, a considerably thick gravel pack, and a high‑capacity pumping unit. Drilling large diameter intake wells in difficult geological conditions using the rotary percussion method with simultaneous casing is much more efficient than the water‑based rotary mud or percussion methods used to date. This paper presents principles for selecting technological parameters of drilling large diameter wells in difficult geological conditions using the percussion‑rotary method with simultaneous casing. Among the main advantages of this method (as compared to the rotary method with drilling fluid) is its high RPM and the related lower cost of the well. Eliminating water‑based drilling mud has a positive effect on the hydraulic efficiency of the well and enhancement work can be omitted in many cases.
4
Content available Technology for preparing washing liquid
Davydenko A., Kamyshatsky A.
AGH Drilling, Oil, Gas
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2016
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Vol. 33, no. 4
693--697
EN
The advantages of the hydrodynamic super-cavitation technique used for the preparation of washing liquids in the course of drilling have been described. The results of theoretical research have been confirmed in practice and laid the foundation for creating a technique for preparing washing liquid.
5
Content available remote Zastosowanie nowych technologii przy wykonywaniu głębokich studni odwadniających
Sioła M.
Geoinżynieria : drogi, mosty, tunele
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2013
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nr 3
76-79
PL
W artykule opisano realizację projektu wykonania 10 głębokich otworów studziennych na przedpolu Szczerców dla KWB Bełchatów. W sierpniu 2011 r. spółka PNiG Kraków, specjalizująca się w wierceniach naftowych, przystąpiła do realizacji projektu. Zastosowano nową technologię wiercenia studni odwodnieniowych. Po raz pierwszy w Polsce wykorzystano technologię przerabiania i wiercenia rurami okładzinowymi – tzw. casing drilling. Prace wykonywano w trudnych warunkach geologicznych i technicznych.
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