Numer czasopisma
AGH Drilling, Oil, Gas
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ISSN: 2299-4157
e-ISSN:
Data wydania
2015
Rocznik
Vol. 32
Numer
No. 3
Prawa dostępu
Dostęp: otwarty dostęp
Uwagi:
Prawa: dozwolony użytek 
Dozwolony użytek chronionych utworów
Strony
Opis
Rocznik czasopisma (rel.)
Rocznik czasopisma
AGH Drilling, Oil, Gas
Vol. 32 (2015)
Artykuły numeru (rel.)
Artykuł
Tylko metadane
A review of pile machines and their selection criteria
(2015) Gonet, Andrzej; Stryczek, Stanisław; Fyda, Michał
Many geoengineering investments can be realized thanks to the use of piles, which may play numerous functions. The piles were classified in the paper in view of assumed criteria and most frequent applications. These works can be performed with specialist pile equipment. In the description attention was paid to the most important technical parameters of pile machines produced by such companies as Bauer, Casagrande and Soilmec. The multi-criteria method with a synthetic measure of evaluation was used for selecting the most suitable pile machine. Among the assumed criteria were the pull up/down force, torque, maximum depth and diameter of the pile and the main winch. The analysis of the obtained weights and criteria revealed that the Bauer pile machine BG 50 had the highest CCS pull up/down and torque and was most appropriate for making long and large-diameter piles.
Artykuł
Tylko metadane
Characterization, properties and microstructure of spent drilling mud from the point of view of environmental protection
(2015) Fijał, Jerzy; Gonet, Andrzej; Jamrozik, Aleksandra
This investigations were carried out on different spent water-based muds, collected in drillings in various parts of Poland. The combined study methods included structural and phase investigations (X-ray diffractometry, infrared FTIR spectroscopy, scanning electron microscopy) and instrumental chemical determinations. The results characterize mineral and phase composition of the samples, their microstructure and chemical composition. The authors focused on the specific nature of polymer-clay complexes, which in drilling mud systems have the form of delaminated or exfoliated organic-clay polymer nanocomposites that control properties of such waste materials. Detailed recognition of properties chemistry, mineral and phase composition, microstructure of spent drilling muds have a fundamental meaning for studies on the management of these materials in the natural environmental.
Artykuł
Tylko metadane
The influence of wettability on oil recovery
(2015) Kulinič, Vitalij
Understanding the mechanism by which oil is displaced from the porous medium requires knowledge about the role of wetting and capillary forces during EOR. Knowledge of the effect of wettability on oil production is also a key point for understanding the behavior of multiphase flows in the reservoir. A literature review indicates that wettability is one of the main factors controlling and regulating the distribution of oil and water in the reservoir rock. Therefore, the resolution of problems associated with the calculation of oil resources, operation and analysis of core deposits, must take into account the wettability of rock. Therefore, the study of such phenomena as wettability is still valid today. In the paper reservoir rock wettability and its types were described. Direct and indirect methods of determining the wettability were characterized, the graph of capillary pressure is used to characterize the wettability. In order to determine the effect of wettability on multiphase flow in porous media are discussed petrophysical parameters: capillary pressure, relative permeability and hydrocarbon saturation of the rock. Characterized wettability of each of the porous medium of carbonate and sandstone reservoirs.
Artykuł
Tylko metadane
Drilling mud for shale gas drilling
(2015) Kędzierski, Miłosz; Wysocki, Sławomir; Wiśniowski, Rafał; Uliasz, Małgorzata; Zima, Grzegorz
The selection of the relevant components the drilling of 5mud can reduce the occurrence of negative physical-chemical phenomena observed between shales and drilling mud. The purpose of laboratory examination was to estimate the impact of different polymer inhibitors for hydration of clays and shales. A laboratory test were performed in order to estimate the concentration of polymer inhibitors in preventing the phenomena taking place in contact with the shale rocks – drilling mud. Also, research the influence a drilling fluids containing different kinds of hydration inhibitors on swelling and clays and shales dispersion.
Artykuł
Tylko metadane
Laboratory research on the influence of new BG-027 polymer addition on technological parameters of drilling mud dedicated to directional drilling in shale rocks
(2015) Wysocki, Sławomir; Wiśniowski, Rafał; Stopyra, Edyta; Romański, Michał
This paper shows the research results on the influence of new BG-027 polymer used in different concentrations onto technological properties of drilling mud for drilling in shale and clay rocks. Standard API test has been conducted as well as thermal resistance, resistance to mono- and divalent salts, LST were studied. The results show that polymer BG-027 addition gives the mud good technological parameters and is a good hydration inhibitor.
Artykuł
Tylko metadane
Applicability of equations for pressure losses in transmission gas pipelines
(2015) Janusz, Piotr; Liszka, Krystian; Łaciak, Mariusz; Smulski, Rafał; Susak, Oleksandr Mihajlovič; Olìjnik, Andrìj
Transmission pipelines for gas have large a diameter and high pressure. Gas pump stations are built along the pipeline and their main task is to increase gas pressure to the technologically and economically justified level. Determining the exact value of pressure drop in the pipeline is the major problem in gas pipeline transport. The drop of pressure is a result of external and internal friction. The pressure can be lowered in the gas pipeline but this depends on the geometric parameters of the latter, i.e. length, inner diameter, full-length profile, quantity and temperature of transmitted gas and its thermodynamic properties. The technical condition of the transmission pipeline and the character of gas flow in the pipeline have a great influence on the pressure variations. A number of mathematical models focus on determining the drop of pressure in a pipeline section. The value of deviations of calculated values from the real data in each model strictly depends on the conditions in the pipeline. The aim of this paper is an analysis of applicability ranges of various equations for pressure losses in transmission pipelines.
Artykuł
Tylko metadane
Phase equilibria for liquefied natural gas (LNG) as a multicomponent mixture
(2015) Włodek, Tomasz
Liquefied natural gas (LNG) has an increasingly important role in the global natural gas market. Global demand for natural gas will grow over the coming years. LNG is transported by ships to unloading points on the storage terminals. During the LNG unloading and storage processes some part of LNG evaporates into gas phase and causes changes in the composition of stored LNG. The main component of LNG is methane, the remaining components are primarily ethane, propane, butane and nitrogen. Depending on the participation of these components the basic thermodynamic parameters of LNG can significantly change. LNG is also product sensitive to changes of temperature. In order to better prediction of changes of individual parameters of stored LNG caused by changes of temperature and LNG composition vapor-liquid equilibrium (VLE) calculations are performed for cryogenic conditions using equations of state.
Artykuł
Tylko metadane
The methods of pressures prediction based on geophysical data
(2015) Wiśniowski, Rafał; Toczek, Przemysław
Prediction of reservoir pressure and so its values at an early stage of wellbore designing significantly increases the profitability of exploration and production wells design. The prediction of rock mass pressures can be performed in a number of ways. The prediction methods have been reviewed since the 1950s. The methods of empirical forecasting of pressures proposed by Eaton B.A. as well as Hottman and Johnson were described in the paper. The paper also refers to the prediction of rock mass pressures on the basis of seismic well log results obtained from works performed on the same geologic unit. A relation between basic parameters of rocks along the wellbore profile is shown. The Eaton method was used for empirical determining pressure for a planned well based on seismic data form the existing well.
Artykuł
Tylko metadane
Selected aspects of drilling waste management in Poland
(2015) Jamrozik, Aleksandra; Ziaja, Jan; Gonet, Andrzej; Fijał, Jerzy
One of the main problems related to environmental protection in the search for hydrocarbon deposits are drilling waste. In these article the authors presented their research results on the toxicity of drilling muds and suggested the possibility of their utilization. Research material represents drilling waste collected during prospecting for both conventional and unconventional deposits of oil and gas in the Polish Lowlands, Pomerania, the Carpathians and the Carpathian Foredeep.
Artykuł
Tylko metadane
Analysis of selected problems encountered while testing natural gas-condensate fields in the Western Carpathians
(2015) Rybicki, Czesław; Dubiel, Stanisław; Blicharski, Jacek
The potential change of natural gas composition in the near-wellbore zone creates a big problem with the selection of appropriate initial value of counterpressure exerted by the displacement fluid on reservoir during the test, and also with the interpretation of the reservoir and production tests results. The analysis of the industrial data reveals that the effect of condensate production in the near-wellbore zone could take place while using too high counterpres-sure during DST tests, as a consequence of using a relatively high column of water displacement fluid in the DST column, i.e. about 2500 m. This thesis can be confirmed after further detailed theoretical analysis of the occurring thermodynamic conditions. The paper addresses technological and interpretation problems encountered during drill stem tests (DST) of gas-bearing Devonian strata, on the example of the Stryszawa field in the Western Carpathians. Special attention was paid to the possible changes of gas composition during flow tests and the cases of gas condensation of heavier fractions during build-up tests. Attempts were made at explaining sudden drops of pressure at the build-up stage along with the thermodynamic conditions responsible for this effect. The authors explained the necessity of using an appropriate Ful-Flo sampler in the DST set for collecting gas samples at any time of the test, and devices for continuous measurement of temperature. The use of new types of drill stem testers and appropriate interpretation methods, which would account for a detailed analysis of technological and reservoir conditions allows for more efficient oil prospecting and deciding about enhancement methods in hydrocarbon production. The analysis of thermodynamic conditions on the bottom of the wellbore allows for selecting proper counterpressure values in view of the condensation of heavier gas fractions in the near wellbore rocks. The analysis of conditions in which heavier gas fractions undergo condensation is approximate and general because the gas samples were collected at the outlet of the DST string (in surface conditions), without a Ful-Flo sampler and without temperature measurements.