Wyniki wyszukiwania - BazTech

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The influence of time of rheological parameters of fresh cement slurries

Stryczek St., Wiśniowski R., Gonet A., Złotkowski A.

AGH Drilling, Oil, Gas

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2014

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Vol. 31, no. 1

123--133

EN

The rheological properties of sealing slurries are very important at the stage of designing and realization of works related to the sealing and reinforcement of the ground rock mass with the use of drilling technologies. For providing high efficiency of the works related to the sealing of casing pipes in deep wells and the rock mass with borehole injection methods, the rheological parameters of sealing slurries should be selected depending on [1,2]: - reservoir conditions of ground and rocks to be sealed, — geometry of borehole and circulation system, — interactions between the stream of injected slurry and the resulting flow resistance, especially in the sealed medium. The results of laboratory experiments focusing on the influence of time on the rheological parameters of fresh sealing slurries based on API Class G HSR - Black Label drilling cement (Dyckerhoff) for various water to cement ratios are presented in the paper

2

Influence of fluidal ashes from lignite on technological properties of slurries based on G-class drilling cements

Stryczek St., Gonet A., Wiśniowski R., Złotkowski A., Ziaja J.

AGH Drilling, Oil, Gas

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2013

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Vol. 30, no. 1

209--220

EN

New generation fly ashes are a produced during coal combustion in fluidized bed furnaces with simultaneous sulphur removal from the gas. This process is held at temperature of about 850 degrees of Celsius. The generated ashes basically differ in their physicochemical properties from traditional silica ashes. Fluidal ashes produced during lignite combustion consist of active puzzolana in the form of dehydrated clayey minerals and active components activating the process of hydration of, e.g. CaO, anhydrite II and CaCO3 ashes. The paper presents the results of laboratory analyses of the influence of ashes coming from the combustion of lignite on technological properties of fresh and set sealing slurries based on drilling cement.

3

Określenie wpływu sekwestracji ditlenku węgla na właściwości technologiczne zaczynów cementowych celem bezpiecznego dla środowiska składowania geologicznego

Uliasz-Bocheńczyk A., Stryczek St., Mokrzycki E., Pomykała R.

Rocznik Ochrona Środowiska

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2012

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Tom 14

875--884

EN

Reducing CO2 emissions is one of the most important issues, not only from the economic point of view, but first and foremost because of its importance for environmental protection. Worldwide research on reduction of CO2 emissions aim to develop technology for carbon capture and storage without a negative impact on the environment. Geologic sequestration of carbon dioxide is the storage method, which is currently tested in various CCS research programs. However, this type of CO2 storage has to be environmentally safe and already at the stage of planning there is a need to estimate the probability of leakage. This applies to both the geological structure, where CO2 is stored, as well as to the infrastructure, and resulting use of materials, primarily cement. For this reason, there are ongoing research projects which aim to determine the cements resistant to corrosive action of CO2. What is more, the impact of carbon dioxide on technological properties of cement which can cause technological complications and leaks should be investigated. This article presents the results of the research on the influence of CO2 on the basic properties of cement slurries that can be potentially useful in drilling technologies used for geological storage. The research has determined the fluidity and initial and final setting time of cement, the amount of supernatant water and mechanical properties (bending strength and compressive strength).

4

Świętowanie jubileuszu

Rychlicki S., Stryczek St.

Nowoczesne Budownictwo Inżynieryjne

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2007

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Nr 5

22--23

5

Prognozowanie parametrów reologicznych żużlowo-alkalicznych zaczynów uszczelniających

Stryczek St., Gonet A.

Archives of Mining Sciences

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1998

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nr 1

97-105

PL

Parametry reologiczne zaczynów uszczelniających odgrywają bardzo istotne znaczenie w technologii uszczelniania skał górotworu metodą iniekcji otworowej. W artykule przedstawiono na podstawie przeprowadzonych badań laboratoryjnych wpływ współczyn-nika wodno-mieszaninowego na kształtowanie się właściwości reologicznych zaczynów żużlowo-alkalicznych. Otrzymane wyniki opracowano statystycznie dla trzech modeli reologicznych. Przeprowadzona analiza matematyczna dla poszczególnych modeli reologicz-nych umożliwia prognozowanie parametrów reologicznych zaczynów żużlowo-alkalicznych w funkcji współczynnika wodno-mieszaninowego.

EN

The rheological parameters of sealing slurries play a very significant role in the Rosnące głębokości szybów kopalnianych, maksymalizacja wydobycia urobku wyma-gają poszukiwania technology of sealing rock mass formation using the hole injection method. This article presents the impact of the water-mixture coefficient in the forming of rheological features of blast furnace slag-alkaline slurries on the basis of laboratory research. The obtained results were analyzed statistically for three rheological models. The mathematical analysis carried out for particular rheological models enables the prognosis of rheological parameters for slag-alkaline slurries as a function of the water-mixture cocfficient.