AGH Drilling, Oil, Gas
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ISSN 2299-4157
e-ISSN: 2300-7052
Issue Date
2016
Volume
Vol. 33
Number
No. 4
Description
Journal Volume
AGH Drilling, Oil, Gas
Vol. 33 (2016)
Projects
Pages
Articles
Relationship between the rheological parameters and zeta potential of bentonites
(2016) Kowalczyk, Damian; Wach, Mateusz; Plewik, Albert; Wysocki, Sławomir
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.
The influence of ionic hydration inhibitors on dual inhibitor system mud properties – clay rock swelling
(2016) Wysocki, Sławomir; Wiśniowski, Rafał; Gaczoł, Magdalena; Nowak, Wiktor
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: $KCl$, $K_{2}CO_{3}$, $HCOOK$, $NH_{4}Cl$, $CaCl_{2}$. 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.
Characteristics of oil based muds and influence on the environment
(2016) Jamrozik, Aleksandra; Protasova, Evgenia; Gonet, Andrzej; Bilstad, Torleiv; Żurek, Roman
Oil based muds (OBM) are highly important in well drilling. Water based muds (WBM) and synthetic based muds are not providing sufficient qualities in fulfilling all of the functions of OBM. OBMs ensure more efficient drilling but also disadvantages such as higher initial cost, more stringent pollution controls and reduced effectiveness of some logging tools. Expenses for mud are reaching 10–15% of total well cost. However, high costs are still low compared to expenses for corrective measures in the case of using mud with poor properties, which could lead to drilling disruption as well as excessive time and cost. OBM and cuttings are saturated with toxic compounds and if discharging to sea poses ecological threats. Perhaps the most hazardous oil component for aquatic organisms are low-boiling aromatics, which consist of benzenes and naphthalenes both soluble in water. Additionally, the higher-boiling aromatic fractions are of high environmental interest due to their persistence in sediments, leading to enzyme induction, cellular dysfunctions, genetic alterations, and chronic effects on organisms. There is a difference in volume of generated waste between using water- and oil-based muds. WBM produces 7,000–13,000 bbl of waste per well. Depending on well depth and diameter 1,400–2,800 bbl are drill cuttings. OBM generates mush less waste as the mud is usually recycled and only drill cuttings with volumes of 2,000–8,000 bbl per well need treatment prior discharge. This paper discusses the hazardous effect of toxic compounds in OBM and evaluates the efficiency of different OBM treatment towards zero discharge.
Technology for preparing washing liquid
(2016) Davidenko, Oleksandr Mikolajovič; Kamišacʹkij, Oleksandr Fedorovič
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.
How to localize an Underground Gas Storage (UGS) in a salt structure of the Fore-Sudetic Monocline in light of its geomechanical properties
(2016) Zeljaś, Dagmara
The analysis of formal and legal regulations revealed that Underground Gas Storages are a favorable option in Polish conditions. The author presented a possible localization of an UGS in a salt structure of the Fore-Sudetic Monocline, indicating the advantages of the area and problems to be solved. Attention was paid to the UGS stability and complexity of this issue. The presented strength indices and rheological parameters of salt were based on laboratory experiments. In the future they can be used at the stage of designing and performing geomechanical analyses.