Fluid migration and rheological properties of different origin G-class cements in oil well drilling applications

In the first part of this study the effect of free water on fluid migration potential is tested for different cement slurries using standard API G-class quality tests. Static gel strength analyser is also used to measure the static gel strength of cement slurries. Three different class G type cement samples were tested according to their free fluid values which are 2.5%, 5%, 3.12% respectively, and it is found that A-type cement, with lowest free fluid content, has the lowest potential for fluid migration. On the other hand, viscosity and gel strength values of cement slurries were determined at six different shear rates. At the same time, cement slurries were characterised by different rheological models and it was observed that Casson model best described the rheological properties of cement slurries.


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In this study, trends in selected water quality parameters in Eymir Lake over a period of 10 years are analyzed using the Mann-Kendall test. Analyzed water quality parameters are dissolved oxygen (DO), total phosphorus (TP), total suspended solids (TSS), and secchi depth (SD). In addition, trends in the yearly averages of precipitation, lake volume, and ambient temperature are examined. According to Mann-Kendall test results, precipitation, volume and ambient temperature values exhibit decreasing trends in ...
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The objective of this study is to assess the performance of a bentonite/sand mixture for the sealing of underground waste repositories through performing geotechnical laboratory tests such as compaction and flow tests. Swelling, mechanical and shear strength tests along with analyses of seal/rock mechanical interactions of an axially loaded seal in rock have been conducted to recommend an optimum compacted bentonite/sand mixture and a suitable bentonite/sand seal length-to-radius ratio (L/a) as a function o...
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In the design of a water quality monitoring network, selection of water quality sampling locations is crucial to adequately represent the water quality of the water body when high costs of analyses and field work are taken into account. In this study, a new approach was proposed to identify the representative water quality sampling locations in reservoirs and lakes using geostatistical tools for estimation of spatial distribution of selected water quality parameters. To do so, kernel density estimation (KDE...
Groundwater vulnurability assessment with DRASTIC method : a case-study on Kırıkkale Plain, Turkey
Büyükdemirci, Ahmet Hakan; Önder, Halil; Department of Civil Engineering (2012)
The objective of this study is to achieve vulnerability assessment of the groundwater by using DRASTIC Method which is developed by United States Environmental Protection Agency (USEPA). It is most commonly used overlay and index method all over the world. Evaluation of groundwater vulnerability would be performed by using computer programs which are based on Geographical Information System (GIS) in order to facilitate data management and spatial analysis. The term vulnerability, that is used in this study,...
Quantification and analysis of uncertainties in reservoir modeling using multiple-point geostatistics
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This study analyzed and quantified uncertainties of reservoirs modeled using multiple-point geostatistics (MPG). The uncertainty types analyzed herein are training image (TI) and hard data (porosity) uncertainties. Aiming at studying the impact of TI uncertainty, this study provides a tool to parameterize TIs having channel structure by a mathematical (Sine) function so that a TI is a function of four parameters. These parameters are channels’ number, waves’ number in each channel, amplitude level of waves,...
Citation Formats
M. V. Kök, “Fluid migration and rheological properties of different origin G-class cements in oil well drilling applications,” INTERNATIONAL JOURNAL OF OIL GAS AND COAL TECHNOLOGY, pp. 449–457, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55845.