Wyniki wyszukiwania - Biblioteka Nauki

1

Complex reservoir drilling fluid solutions for reservoir drilling

100%

Szczygieł A.

AGH Drilling, Oil, Gas

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2019

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tom Vol. 36, no. 1

45--59

EN

Drilling into a pay zone with a conventional fluid can introduce a host of previously undefined risks, all of which diminish reservoir connectivity with the wellbore or reduce formation permeability. This is particularly true in horizontal wells, where the pay zone can be exposed to the drilling fluid over a long interval. Selecting the most suitable fluid system for drilling into the pay zone requires an understanding of the reservoir. Using data generated by lab testing on core plugs from carefully selected pay zone cores, a reservoir-fluid-sensitivity study should be conducted to determine the morphological and mineralogical composition of the reservoir rock. Natural reservoir fluids should be analyzed to establish their chemical makeup. The degree of damage that could be caused by anticipated problems can be modeled, as the effectiveness of possible solutions for mitigating the risks. In addition to being safe and economical for the application, a Reservoir Drill-In Fluid should be compatible with the reservoir's native fluids to avoid causing precipitation of salts or emulsions production. A suitable nondamaging fluid should establish a filter cake on the face of the formation and shouldn't penetrate too far into the formation pore pattern. The fluid filtrate should inhibit or prevent swelling of reactive clay particles within the pore throats. Formation damage commonly is caused by: – Pay zone invasion and plugging by fine particles. – Formation clay swelling. – Commingling of incompatible fluids. – Movement of dislodged formation pore-filling particles. – Changes in reservoir-rock wettability. – Formation of emulsions or water blocks. Once a damage mechanism has diminished the permeability of a reservoir, it seldom is possible to restore the reservoir to its original condition.

2

Drilling fluids for drilling in shale and clay rocks

100%

Wiśniowski R. , Uliasz M. , Zima G. , Wysocki S. , Gaczoł M.

AGH Drilling, Oil, Gas

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2015

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tom Vol. 32, no. 2

415--429

EN

Clay shale rocks large intervals drilling generates a serious issues caused by hydration, swelling and dispersion of clay rock. Those reactions might lead to break-downs and complications in drilling as the consequences of borehole wall stability loss that have source in cave effect (occurrence of caverns and cavings) and borehole diameter sharp decreasing. Therefore, the outcomes of the research that have been undertaken are muds formulas adjusted for drilling various clay rock intervals.

3

New mud for UnderBalanced Drilling

100%

Wysocki S. , Gaczoł M. , Wysocka M.

AGH Drilling, Oil, Gas

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2016

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tom Vol. 33, no. 4

801--809

EN

This paper describes a research finding of drilling mud designed for UnderBalanced Drilling. The UnderDril mud formula is based on a low number of compatible components, therefore it enables uncomplicated adjustment of its technological parameters to specific conditions and contributes to the reduction of its application costs. Moreover, the UnderDril mud is composed of biodegradable ingredients, that results in a beneficial effect on the possibility of its utilization and simultaneously makes it hazardous free for the environment. The conducted research showed that the abovementioned mud can find an industrial application.

4

Studies on the impact of ionic degree of copolymer poly(AAm-co-AMPSA) to bentonite suspension parameters

100%

Wysocki S. , Klima K. , Podborska A.

AGH Drilling, Oil, Gas

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2016

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tom Vol. 33, no. 1

173--182

EN

The article presents results of the laboratory studies on the impact of ionic degree of copolymer poly(AAm- -co-AMPSA) to technological parameters of bentonite suspension. Rheological properties of bentonite suspension, lubricity, filtration and LST were examined.

5

ECD optimization with specially designed low rheology drilling fluids

80%

Wiśniowski R. , Skrzypaszek K. , Kiebzak P.

AGH Drilling, Oil, Gas

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2017

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tom Vol. 34, no. 1

169--179

EN

This article presents a method in which low rheology drilling muds are used as a solution for demanding wellbore pressure management and high Equivalent Circulating Density (ECD) values. In order to investigate this problem series of numerical simulations were conducted. Real, field data from two already accomplished wells was used to recreate actual wellbores conditions in Halliburton Landmark Drilling Software and to calculate ECD values. In order to check and confirm the program’s results accuracy, the outcomes were compared with pressure while drilling (PWD) equipment surveys results made during drilling operations. Next, simulations were made in order to check how low rheology parameters of drilling muds will impact overall ECD values. Additionally in the article are included field tests results from Hibernia Platform, prepared by Bolivar, Joung et al. in 2007 where specially treated (TMSB) low rheology drilling fluids was used to mitigate lost circulation issues and extensive ECD values. Both researches’ results indicate that low rheology drilling muds may solve ECD optimization problems while still maintaining required properties and executing tasks of drilling fluids.

6

Application of PT-84 polymer in HDD mud - lab research

80%

Kowalczyk-Cudak D. , Ropka A. , Wysocki S.

Wiertnictwo, Nafta, Gaz

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2011

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tom T. 28, z. 1-2

193-198

EN

One of the most important in HDD technology is a drilling mud with specific properties. In this paper the results of PT-84 polymer application in HDD drilling mud are presented. Tested mud characterize with good technological properties, it gives good perspectives of industrial development.

PL

W niniejszym artykule przedstawiono wyniki badań dotyczących aplikacji środka polimerowego PT-84 przeznaczonego do płuczek HDD. Przebadane płuczki charakteryzują się dobrymi parametrami technologicznymi, co pozwala na zastosowanie ich w praktyce przemysłowej.

7

Przegląd rynku płynów wiertniczych

80%

Osikowicz R.

Inżynieria Bezwykopowa

|

2009

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tom nr 4

28-36

PL

Płyny wiertnicze to jedno z najważniejszych zagadnień w technologiach bezwykopowych. Współczesne płyny odgrywają kluczową rolę w optymalizacji procesu wiercenia. Spełniają wiele funkcji zarówno w wierceniach kierunkowych HDD jak i w mikrotunelowaniu. System płuczkowy rozumiany jest jako kompozycja chemiczna, która da się opisać szeregiem charakterystycznych parametrów. Czysta woda jako płuczka stosowana jest rzadko. Zwykle płuczka zawiera składniki odpowiadające za lepkość, filtrację oraz zdolności inhibicyjne. Pojęcie płyn wiertniczy używa w celu podkreślenia, że posiada on specjalną charakterystykę reologiczną pomocną w realizacji zadania opartego na bilansie przepływów i ciśnień.

EN

The author focuses on the overview of the market of drilling fluids, which constitute one of the most significant issues in no-dig technologies. Modern fluids play a significant role in the optimisation of the drilling process. They have various functions in horizontal, directional drilling (HDD) and micro-tunnelling. The article presents, among other things, types of fluids and their applications, parameters, products, composition, functions, the issue of friction, a drilling fluid programme, phase separation and separating machines. Summary tables contain information concerning the components of drilling fluid systems, suppliers of drilling fluid systems, in the scope of chemical materials, or phase separation systems.

8

Relationship between the rheological parameters and zeta potential of bentonites

80%

Kowalczyk D. , Wach M. , Plewik A. , Wysocki S.

AGH Drilling, Oil, Gas

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2016

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tom Vol. 33, no. 4

663--669

EN

The paper presents an estimation of bentonites quality using electrokinetic phenomena occurring in dispersed clay systems. The idea behind the work is to demonstrate the relationship between the rheological parameters of the tested materials, and their zeta potential and consequently determine the suitability of these criteria for preparing drilling fluids.

9

Influence of ionic hydration inhibitors on triple inhibition system mud properties - clay rock swelling

80%

Wysocki S.

AGH Drilling, Oil, Gas

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2017

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tom Vol. 34, no. 2

629--637

EN

Recently past years, while drilling clay rock, mainly mud with triple inhibition system is applied. In the light of abovementioned fact, it can be seen growing importance of studies related to improvement and development of this type of mud formulas. The paper describes undertaken studies of QSE Pellets swelling and linear swelling (LST) of the Miocene shale under influence of different concentration of chosen clay rock hydration inhibitors in mud with triple inhibition system.

10

Influence of ionic hydration inhibitors on dual inhibitor system mud properties – technological parameters

80%

Wysocki S. , Wiśniowski R. , Gaczoł M. , Nowak W.

AGH Drilling, Oil, Gas

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2016

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tom Vol. 33, no. 3

629--639

EN

Various organic and inorganic compounds can be used as hydration inhibitors. The main purpose of this paper is the examination of five different ionic hydration inhibitors: KCl, K2CO3, HCOOK, NH4Cl, CaCl2. The paper contains the survey findings of the influence of the above mentioned inhibitors different concentrations on technological parameters of drilling muds with a dual inhibitor system and swelling of clays.

11

Numerical simulation of drilling fluid flow in annular the space of the borehole

80%

Kowalska-Kubsik I.

AGH Drilling, Oil, Gas

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2015

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tom Vol. 32, no. 4

775--783

EN

This paper presents the numerical results of a numerical analysis of drilling fluid flow through annular space in the borehole. The analysis used the Herschel–Bulkley rheological fluid model. The obtained results of the analysis for three cases with variable geometry. Variable geometry is associated with a larger diameter drill in the joints of drill pipes, and consequently, with reduced flow cross-section. A comparison of pressure values at the end of the analyzed examples showed that in the example of a simple drill pipe without joints, pressure values were 30% higher than in the case, which takes into account changes in the geometry of the joints.

12

Removal of the filter cake created by the mud for hydrogeological drilling by the method of acidizing

80%

Wysocki S. , Gaczoł M. , Ciepielowska M.

AGH Drilling, Oil, Gas

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2015

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tom Vol. 32, no. 1

121--133

EN

The article describes issue of a mud for hydrogeological wells and a method of removing sediment accumulated on the well filter and in the near-well zone after borehole drilling. Developed fluid formula is based on both primary criterion of selecting the best technological parameters of the mud and restrictive ecological standards. Because of the contact between the mud and the underground water (which is the main source of potable water), a need to select appropriate components such as biodegradable polymers (Guar-Gum, XC) and other organic compounds that are not causing harmful environmental effects has arisen. Furthermore, developed formula allows for relatively easy removal of mud remains from the well filter and near-well zone, inereasing well efficiency. The paper includes research findings of sediment acidizing by the procedure called "soft acidizing". Any information about practical application of this procedure can hardly be found in specialized literature. Therefore, concentrations and variations of the acetic, hydrochloric and citric acids were subject of research and analysis.

13

Selected methods of measuring drilling mud settling

80%

Zwierzyński A. J. , Wróblewski T. , Wiśniiowski R. , Stryczek S.

AGH Drilling, Oil, Gas

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2014

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tom Vol. 31, no. 4

471--483

EN

Methods of measuring settling rate of drilling muds have been selected and the basic theoretical data on this process are addressed in the paper. A brief discussion is also given on the negative influence of settling in drilling mud on the stability of wellbore and formation of potential drilling complications. The results of an analyses of the settling processes taking place in oil-based muds made according to 8 recipes are presented. The direct weighing method has been used in the measurements.

14

New mud for hydrogeological drilling

80%

Macuda J. , Wysocki S. , Gaczoł M.

AGH Drilling, Oil, Gas

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2016

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tom Vol. 33, no. 4

819--828

EN

A major source of valued water are groundwater deposits. Therefore, constantly growing water demand requires greater focus on the subject of hydrogeological drilling. The primary requirements for groundwater drilling are: protection of important aquifers as well as formations being drilled and further easy removal of the mud residues during well development. Both aspects are connected to mud ingredients and additives selection. This necessitates an improvement of drilling fluid formula for most effective borehole drilling and successive exploitation. This article concentrates on the drilling fluid for hydrogeological drilling. In order to validate the practical utility of developed mud, laboratory research was conducted. An analyses of the outcomes expose the mud improving drilling process and fulfilling above mentioned requirements

15

Wellbore trajectory impact on equivalent circulating density

80%

Wiśniowski R. , Skrzypaszek K. , Kiebzak P. , Kański M.

AGH Drilling, Oil, Gas

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2017

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tom Vol. 34, no. 1

181--202

EN

Undermentioned article presents how wellbore trajectory changes may impact mud flow pressure losses in wellbore annulus and overall Equivalent Circulating Density (ECD) value. In order to investigate this topic, there were conducted two series of tests. In the first round actual, field data from six previously drilled wells was used to recreate real wellbores conditions in Halliburton Landmark Drilling Software and to calculate ECD values. In order to check and confirm the results accuracy, the outcomes were compared with pressure while drilling (PWD) equipment surveys’ results made during drilling operations. Next it was analyzed how ECD parameter's values change in particular sections of vertical and horizontal wellbores, due to trajectory angle modifications. With aim of expanding scope of the work, the second group of tests was made in Drilling Fluids Laboratory at Faculty of Drilling, Oil and Gas. Using Grace Sagging Tester M8500 Ultra HPHT it was examined how in wellbore conditions (high pressure and temperature) wellbore trajectory angle modifications may impact solids sedimentation process and fluid density changes in the annulus thus ECD value as well. The results indicate that there is a relationship between wellbore trajectory angle changes and ECD value shifts. In addition there are included field tests outcomes prepared by K&M Technology Group which confirm presented assumption.

16

The influence of ionic hydration inhibitors on dual inhibitor system mud properties – clay rock swelling

80%

Wysocki S. , Wiśniowski R. , Gaczoł M. , Nowak W.

AGH Drilling, Oil, Gas

|

2016

|

tom Vol. 33, no. 4

671--679

EN

Various organic and inorganic compounds can be used as the hydration inhibitors. The main purpose of this paper is the examination of five different ionic hydration inhibitors: KCl, K2CO3, HCOOK, NH4Cl, CaCl2. The paper contains survey findings of the influence of the abovementioned inhibitors different concentrations on technological parameters of drilling muds with dual inhibitor system and swelling of clays.

17

Influence of ionic hydration inhibitors on triple inhibition system mud properties - technological parameters

80%

Gaczoł M.

AGH Drilling, Oil, Gas

|

2017

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tom Vol. 34, no. 1

95--101

EN

Clay rock hydration is primary reason of borehole wall instability during drilling. In correspondence to this fact, it is substantial to counteract abovementioned phenomenon. It can be achieved e.g. applying ionic hydration inhibitors in the drilling mud formula. From the point of view of drilling effectiveness, the most practical is water based inhibitive mud. Its stabilizing properties are partially effect of soluble salts and low concentrations of polymer. This type of the mud exhibits good rheological properties and causes, in most of cases, increased rate of penetration (ROP). Ionic inhibition contribute to reduction of both dispersion and hydration of clay rock due to decreased instability of shales containing swelling clays. Hydration degree depends on the type and concentration of inhibitive ions in the drilling mud. This paper describes studies on influence of the chosen inhibitors (KCl, K2CO3 , HCOOK, CaCl2) on technological parameters of the developed drilling muds with triple inhibition system. Obtained results indicate good parameters of the mud. For HCOOK and CaCl2 increase of the inhibitor concentration causes major changes in mud parameters, however for K2CO3 and KCl those parameters do not change significantly.

18

Podróż do wnętrza bentonitu : poznaj materiał, który stosujesz. Cz. 2, Budowa i charakterystyka montmorillonitu a wybrane właściwości płuczki wiertniczej

60%

Motyka P.

Inżynieria Bezwykopowa

|

2014

|

tom nr 3

74-75

PL

Zrozumienie cech bentonitu, a w szczególności ich pochodzenia, wymaga niejako zajrzenia do jego wnętrza. Jak już wiemy, właściwości bentonitu są pochodną jego składnika głównego - montmorillonitu.

19

Środki utleniające i enzymatyczne do usuwania osadów filtracyjnych z płuczek wiertniczych przed zabiegiem cementowania

60%

Zima G. , Uliasz M. , Błaż S. , Jasiński B.

Prace Naukowe Instytutu Nafty i Gazu

|

2012

|

tom nr 182 wyd. konferencyjne

727--732

PL

W referacie przedstawiono wyniki badań laboratoryjnych nad określeniem zdolności enzymów i utleniaczy do rozkładu polimerów stosowanych w składach płuczek wiertniczych, na podstawie pomiarów parametrów reologicznych zawiesin koloidalnych polimerów i płuczek wiertniczych. Badania te prowadzono przy różnym pH i zasoleniu (NaCI) i dotyczyły one wpływu wybranych środków (utleniaczy i enzymów) na parametry reologiczne płuczek wiertniczych. Do badań użyto płuczek wiertniczych o składach stosowanych przez serwisy płuczkowe na przedgórzu Karpat oraz na Niżu Polskim. Wybrane do badań płuczki zawierały w swoim składzie zarówno koloidy ochronne typu skrobiowego, jak i celulozowego, co pozwoliło na dobór odpowiednich środków (utleniaczy i enzymów) w zależności od typu użytego w składzie płuczki zestawu polimerów. Badania z udziałem płuczek wykonywano głównie w warunkach symulujących warunki otworowe, tj. w obecności zwiercin i skażeń chemicznych oraz w podwyższonej temperaturze. Uzyskano pozytywne wyniki odnośnie możliwości upłynniania płuczki bezpośrednio przed cementowaniem, a również możliwości zastosowania utleniaczy i enzymów w składach cieczy przemywających do usuwania osadów filtracyjnych.

EN

The paper presents the results of laboratory tests to determine the ability of enzymes and oxidants to degrade the polymers used in the composition of drilling fluids from measurements of the rheological parameters of colloidal suspensions of polymers and drilling fluids. These studies were carried out at different pH and salinity (NaCI), they relate to impact of oxidants and enzymes on rheological parameters of drilling fluids. Muds used in the study are applied by the drill sites in the foothills of the Carpathians and the Polish Lowlands. Muds selected for study included in its composition, both protective colloids such as starch and cellulose which allowed the selection of oxidants and enzymes, depending on the type of polymers used in the composition of a mud. Studies of drilling muds was performed under borehole conditions, i.e. presence of cuttings and chemical contamination and high temperatures. Positive results were achieved regarding the possibility of thinning of mud just before cementation, and the possibility of using oxidants and enzymes in the composition of the washing fluids to remove filter cake.

20

Modyfikacja cieczy do dowiercania w celu obniżenia tarcia narzędzi i poprawy przepuszczalności skał zbiornikowych

60%

Nowotarski I.

Prace Instytutu Górnictwa Naftowego i Gazownictwa

|

2002

|

tom nr 116 wyd. konferencyjne

341--345

PL

Zmniejszenie tarcia istotne jest podczas wiercenia otworów, zwłaszcza o zakrzywionej osi oraz w celu ułatwienia pracy mechanizmów wyposażenia wgłębnego przeznaczonego do opróbowania i udostępniania otworów. Dodatki smarujące stosowane do cieczy przeznaczonych do dowiercania powinny przede wszystkim nie uszkadzać przepuszczalności skał zbiornikowych. W tym celu należy kierować się doborem takich środków, które są odporne na zasolenie, skażenie solami i jonami pierwiastków wielowartościowych, podwyższoną temperaturę i nie zwiększają pęcznienia minerałów ilastych. Dodatki smarne powinny na tyle silnie adsorbować się na powierzchni stali narzędzi znajdujących się w otworze, żeby powstała z nich błonka odporna na duże naciski. W referacie przedstawiono wyniki badań dodatku spełniającego te wymagania.

EN

Friction reducing is important during drilling the wells in order to minimize torque and drag forces, especially in deviated wells and to ease operation of tubulars used for completion, stimulation or workover jobs. Friction reducing additives used for drill in fluids have to prevent reservoir formation damage. Their components have to be chosen among those chemicals which are resistant to salt or polyvalent ion contamination, high temperatures, and don't enhance clay mineral swelling. Lubricating additives ought to exhibit strong adsorption on steel surface of tools working inside the well and they should create a film that withstands high compressive and drag forces.