Artykuły (CN-wiertnictwo)

Permanent URI for this collectionhttps://repo.agh.edu.pl/handle/AGH/102860

Artykuły czasopisma Wiertnictwo Nafta Gaz

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Access status: Open Access ,
Wyznaczanie położenia konturów złożowych dla złóż ropy naftowej i gazu ziemnego w oparciu o kryteria hydrodynamiczne
(2005) Wojna-Dyląg, Elżbieta; Zawisza, Ludwik
The size and shape of a hydrocarbon field are determined by geological boundaries of strata and surface of the contour. The location of contours depends on the flow of formation waters, reservoir properties of rocks and properties of reservoir fluids. The mapping method of hydrodynamic hydrocarbon traps presented in this paper to determine the site of the field contour and so the deposit boundaries for oil and natural gas. To define the field contours it is necessary to work out a structural map of water-oil-bearing horizon, potentiometric map for reservoir water, map of specific gravity for reservoir water, map of specific gravity of oil in reservoir conditions, map of porosity, map of permeability and map of capillary pressures. Then the methodics presented in the paper should be applied. The procedure lies in performing some simple algebraic operations on maps. The realization of the discussed methodics is presented on the example of the oil field Czerwieńsk, in the Main Dolomite strata in the Fore-Sudetic area.
Access status: Open Access ,
Badania wpływu nowo opracowanych płuczek kationowo-skrobiowych na zmianę przepuszczalności ośrodka przy użyciu filtrów ceramicznych
(2007) Wysocki, Sławomir; Bielewicz, Danuta; Wysocka, Marta
In this paper results of investigations of new drill-in muds with cationic polymers are presented. Rheological properties and influence onto permeability of rocks were research. Investigations were moved in simulated downhole conditions. In tests dynamic HPHT filter press and ceramic filters (as a rock simulator) were used. Research shoved, that new cationic-starch drill-in muds couse smaller permeability damage than mud used in Polish industry.
Access status: Open Access ,
PDC single cutter : the effects of depth of cut and RPM under simulated borehole conditions
(2011) Majidi, Reza; Miska, Stefan; Tammineni, Sandeep
While the weight on bit (WOB) and rotary speed (RPM) are perhaps the most important drilling parameters affecting the rate of penetration, limited information are available about the fundamental mechanisms of rock destruction and the effect of cutting speed and the depth of cut during the cutting process. Experiments were carried out in a high-pressure facility with a 13 mm single PDC cutter to cut Carthage Marble and Indiana Limestone samples with depths of cut in the range of 0.02-0.12 inch and rotary speeds from 30 to 180 RPM at atmospheric and pressurized conditions. Our previous experimentations showed that an increase in the confining pressure as small as 150 PSI could significantly increase the Mechanical Specific Energy (MSE) of the cutting process and reduce the efficiency by half. Recently performed atmospheric and pressurized single cutter tests, showed that a minimum depth of cut was required to efficiently drill the rock samples. MSE required to cut the rock, reached a minimum at depths of cut greater than 0.08 inches for both Indiana Limestone and Carthage Marble samples. Most promising were the results that showed a decrease in MSE at high rotational speeds (RPM 100) and atmospheric pressure, possibly indicating a change in rock failure mechanism. A mathematical model was derived from the balance of forces acting at the PDC cutter that constitutes a single linear relation between the cutting force and the normal force. The characteristic line acts as an indication of bit-rock interaction and can be used to detect the formation and cutter dullness. The model was verified using the experimental data from the single cutter tests. Such observations and analysis provide useful insights into the physics of cutter-rock interaction and are valuable to the improvements of drilling practices selection (WOB, rotary speed, etc) and the rates of penetration.
Access status: Open Access ,
Badania laboratoryjne dyfuzji par węglowodorów w ośrodku gruntowym
(2009) Fąfara, Zbigniew; Mirkiewicz, Piotr
Numerical modelling of migration of oil contaminations in the ground aeration area requires accounting for a number of accompanying processes, out of which diffusion of hydrocarbon vapours in the porous space of the ground may be sometimes very important. This, however, requires cognition of a number of parameters of a mathematical model describing properties of the porous medium, migrating fluids and conditions of migration. The coefficient of diffusion of hydrocarbon vapours in ground is crucial for the correct description of diffusion. However, specialist literature does not give detailed figures, except for averages of diffusion coefficients which cannot be referred to specific types of the ground. This is connected with the hardly accessible uncertainty coefficient to the final results of calculations. Therefore, the Authors designed a laboratory post for analysing hydrocarbon vapours and performed measurements for four natural, specially selected different models of homogeneous ground medium. The prepared physical models represent grounds containing gravel and sand fractions: course, medium and fine sands. Pb-free ethyline was used as a source of hydrocarbon vapour. The obtained results have been discussed in the paper. In the future they may be used for construing a mathematical model enabling one to more precisely assess the coefficient of diffusion of hydrocarbon vapours in ground air, depending on the ground properties, especially its grain compositions.
Access status: Open Access ,
Utilization of logging methods in geological drilling exploration in localities of Mostecka uhelna A.S.
(2006) Kurka, Miroslav; Mazáč, Josef; Šulcek, Petr; Sovíček, Slavomír; Řehoř, Michal
Geophysical logging methods represent very important part of geological research. Results gained by logging measurement are a very important addition to the information gained by laboratory analyses of the drill core. Utilization of logging methods in coal deposits is always a very expensive matter which requires to gain as much necessary information as possible from every measurement and laboratory analysis. This paper gives information about main logging method utilization in geological drilling exploration in localities of Mostecka uhelna, Inc.
Access status: Open Access ,
Problemy przemieszczania się wody złożowej w czasie eksploatacji złóż gazu ziemnego i podziemnych magazynów gazu
(2007) Rybicki, Czesław; Blicharski, Jacek
This paper concerns some problems of exploitation of water drive gas reservoirs. There are presented methods for defining drive mechanism of gas reservoirs and methods for estimation of intensity of water influx from adjacent aquifer. On the basis of presented mathematical model authors has made calculation for a chosen gas reservoir working in natural water influx conditions.
Access status: Open Access ,
Beziłowa płuczka wiertnicza przeznaczona do wierceń HDD na bazie nowego polimeru PT-51
(2010) Chlebosz, Robert; Fabia, Bogusława; Wysocki, Sławomir
Horizontal directional drilling are more often used in engineer practice. They have to improve living standard by allowing electricity, fuel and information transport and by building municipal water supply systems. When the ground methods are too expensive, or impossible the underground installations will be perfect solution. They enable to avoid easily the obstacles such as: roads, buildings or even rivers. The drilling muds are one of the most important elements of HDD technology. Choosing optimal mud system help maximalize drilling progress and minimalize risk of investment. The article presents results of research into drilling mud for HDD method with the addition of new polymer PT-51 modified by CO-3 ions. It was also tested against salt monovalent and bivalent contamination, the temperature resistance and lubricity. The results show that composed mud can be applicable in the industry.
Access status: Open Access ,
Badania laboratoryjne nad zastosowaniem nowego kopolimeru kationowo-niejonowego do płuczek HDD
(2009) Wysocki, Sławomir; Bielewicz, Danuta; Wysocka, Marta
One of the most important in HDD technology is a drilling mud with specific properties. In this paper the results of cationic-nonionic copolymer KaCoPoli-3 application in drilling mud are presented. Tested mud characterize with good technological properties, it gives good perspectives of industrial development.
Access status: Open Access ,
Modelling of two phase filtration in fractures of hydraulic fracturing
(2010) Beisembetov, Iskander Kalybekovič; Assilbekov, B. K.; Žapbasbaev, Uzak K.; Kenzhaliev, B. K.
Aim of this work is to demonstrate a simulation of two-phase filtration in ruptures of breakdown which stated by mechanical conception of interpenetrating continuums. The worked out computing method forecasts degree of drowning, an amount of stocked up oil extraction and oil extraction ratio. Design data is in satisfactory fit with hydraulic fracturing coefficients got in industrial acceptance of oil fields. KEYWORDS: two-phase filtration, simulations.
Access status: Open Access ,
Techniczne i technologiczne aspekty zatłaczania wód złożowych do górotworu
(2007) Macuda, Jan; Lewkiewicz-Małysa, Aleksandra; Konopka, Elżbieta
Reservoir water injection to the rock mass through disposal wells should meet mining and environmental safety requirements. This problem is of special significance in the case of wells that are either abandoned wells or to be closed. The selection criteria for disposal wells and range of necessary tests and analyses of post-exploitation wells' construction designed for injection of reservoir water are presented in the paper. The results of laboratory analyses of reservoir water of known physicochemical properties were used for determining and eliminating original factors favorable to the colmatation of the near-well zone. KEYWORDS: reservoir waters, injection zones, water treatment, sedimentation, flocculation, colmatation, near-well zone.
Access status: Open Access ,
Przyrząd i metoda Kaczyńskiego do oznaczania współczynnika filtracji gruntów
(2007) Drożdżak, Ryszard
The theoretical assumptions and practical principles of the R. Kaczyński method of laboratory determining filtration coefficient of grounds are presented in the paper. The technical and geometric parameters of an experimental stand made at the Faculty of Drilling, Oil and Gas AGH-UST are discussed, and the results of measurements are presented.
Access status: Open Access ,
Badania korozyjności cieczy nadpakerowych na bazie chlorku sodu w warunkach dopływu siarkowodoru
(2005) Bielewicz, Danuta; Wysocka, Marta; Wysocki, Sławomir
The authors present the results of experiments oriented to determining the corrosiveness of over-packer $Na-Cl$-based fluids, saturated with hydrogen sulfide, in the area of the BMB field, as well as the selection of the most efficient corrosion inhibitor. The experiments concentrated on the measurement of $H_{2}S$, pH and corrosiveness of over-packer fluids saturated with hydrogen sulfide at temperature 60 and 80 Celsius degrees. The experiments were conducted for two types of solutions: $NaCl$ and $NaCl+CMC LV$, with the initial pH mpos 10 and 12. Analogous experiments were performed for the above fluids after adding three corrosion inhibitors. The analysis of the results showed that the lowest corrosiveness in the hydrogen sulfide conditions at a temperature of 80 Celsius degrees was obtained for the $NaCl$-based fluid with CMC LV and admixture of the corrosion inhibitor ANTYKOR PP with the initial pH = 12.
Access status: Open Access ,
Influence of drilling direction on wellbore stresses
(2011) Knez, Dariusz; Megao, Eddie; Knez, Janusz; Śliwa, Tomasz
The transposed in-situ stress state relative to the borehole coordinate system (Cartesian borehole coordinate system) and the total stress component at the borehole wall (cylindrical coordinate system) exhibits cyclic behaviour with respect to drilling direction of borehole with respect to delta/H, Beta. On the other hand, with varying borehole inclination, a, the stress either increases or decreases with increasing a angles. Consequently the effective maximum, delta1 and average, delta2 principal stresses exhibits the same behaviour. It can be concluded generally that the effective principal stress state of a wellbore would vary in a cyclic behaviour and would have a maximum and minimum stress points. From these observations, it is obvious that in any situation, optimal combinations of alpha and Beta will have to be established before drilling is commenced in order to optimise stability of the borehole.
Access status: Open Access ,
Źródła dwutlenku węgla w Polsce dla zaawansowanych technik wydobycia ropy naftowej
(2005) Tarkowski, Radosław; Uliasz-Misiak, Barbara
The article presents possibilities of gaining CO2 from large point sources of emission in Poland for enhanced oil recovery by underground injection of this gas. This technology has been used for decades, especially in the USA, where natural and anthropogenic gas is used. In Poland due to little reserves and natural gas production, anthropogenic CO2 for EOR process could be used. The biggest CO2 emitters are presented (above 500 Gg/year), basic technological process which produce the gas, industrial plants locations, concentration of carbon dioxide in flue/industrial gases are characterized. Economical and environmental aspects of using CO2 for EOR are underlined. Location of the biggest CO2 emitters was defined in connection with hydrocarbon reservoirs location which have various sizes and stags of exploitation.
Access status: Open Access ,
Oddziaływanie osuwisk na gazociągi
(2006) Wilk, Stanisław; Galas, Marek; Mijal, Marek
If a gas pipeline has been deposited in an inclined ground and owing to the changed ground properties the creeping ground process started during exploitation, the conditions of gas pipeline exploitation radically change too. With time, the load exerted by the creeping ground on the gas pipeline increases, causing increased stresses in the pipe material. This results in a change of the gas pipeline axis and more prominent deformations in the pipeline material.
Access status: Open Access ,
Ocena jakości wód podziemnych w rejonie składowania przemysłowych odpadów organicznych
(2008) Lewkiewicz-Małysa, Aleksandra; Konopka, Elżbieta
The influence of long-term deposition of organic waste on the quality of migrating groundwaters and propagation of specific pollutions is analyzed in the paper. Owing to the possible exploitation failures in the landfill design, toxic substances (pesticides) may get to the ground and water environment. Potential hazards necessitate checking how the chemical composition of groundwater changes over years. It is treated as a safety criterion of failure-free deposition of dangerous substances.
Access status: Open Access ,
Down-hole water sink technology for water coning control in wells
(2006) Wojtanowicz, Andrzej
Downhole Water Sink (DWS) technology has been developed from a new well completion and production method for enhancing productivity of wells in petroleum reservoirs with bottom water drive and strong tendency to water coning. DWS minimizes water invasion to the well's completion by employing hydrodynamic mechanism of coning control in-situ at the oil-water or gas-water contact. The mechanism is based upon a localized water drainage generated by another well completion (downhole water sink) installed in the aquifer beneath the oil-water or gas-water contact. The paper summarizes the development and state-of-the-art at DWS technology. Presented are results from theoretical studies, physical and numerical experiments, and field projects to date. It is demonstrated that DWS could increase recovery and control water production in vertical and horizontal oil wells - with natural flow, downhole pumps or gas lift, and in the gas wells from low-pressure tight gas reservoirs. Although by now DWS has been used in reservoirs with bottom water, theoretically the technology is also applicable in dipping structures with encroaching side-water.
Access status: Open Access ,
Zastosowanie sondowania statycznego w badaniach prowadzonych w PPiEZRiG Petrobaltic S.A.
(2006) Zajfert, Grzegorz
Marine geotechnical investigations should be run for such investments as suspension of the platform, gas pipelines installment, anchoring of overflow-moor buoys to the tanker, and designing hydrotechnical objects. Petrobaltic used a penetrometer Roson 10 T, installed on a ship m/v St. Barbara. The Dutch Penetrometer Roson 10 T A.P. V.d. Berg enables soil analyses in situ. The methods lie in sticking measurement cones into the ground with simultaneous digital recording physical and mechanical parameters of the sediments. The sounder can be also equipped with cones CPT and CPTU, and tester MOSTAP-65 with which undisturbed samples can be collected. Specific parameters and ground properties are registered during the measurement. These parameters enable determination of the geotechnical profile and carrying capacity of the sediments. This device is indispensable for evaluating mechanical properties of grounds whenever intact samples cannot be collected, e.g. from sandy sediments. The paper provides descriptions of research processes, where various difficulties may be encountered. The Author presents his own solutions and experience in preventing failure or measurement errors.
Access status: Open Access ,
Wpływ współczynnika wodno-cementowego na parametry technologiczne świeżych zaczynów sporządzonych na osnowie cementów wieloskładnikowych
(2005) Stryczek, Stanisław; Gonet, Andrzej; Wiśniowski, Rafał
By the close of 2004, a production of very economic multicomponent cements with high fly ash content, ground, granulated blast-furnace slags and low klinker content. Set sealing slurries made from multicomponent cements have a specific phase composition and a suitable microstructure, providing a warranty of highest exploitation durability. The results of experiments on fresh sealing slurries made from multicomponent cement CEM V/A - 32.5 of different water-to-cement ratios are presented in the paper. Special attention has been paid to the influence of the water-to-cement ratio on rheological model and its parameters.
Access status: Open Access ,
Zaczyny geopolimerowe do uszczelniania górotworu metodami iniekcji otworowej
(2007) Stryczek, Stanisław; Wiśniowski, Rafał; Gonet, Andrzej
Drilling, mining, hydrotechnical and engineering operations are frequently related with geotechnical problems requiring reinforcing and sealing of the ground and the rock mass. The basic works are usually carried out with the borehole injection methods and the properly applied sealing slurries. Portland cement sealing slurries have a number of shorcomings, e.g.: long time of setting, incorrect rheological properties. These disadvantages can be significantly improved by admixing selected mineral additives. Hence, recently this problem has been intensely investigated in view of further development of binders and sealing slurries to obtain a new generation of the so-called geopolymer slurries. Geopolymer slurries are based solely on inorganic components.