An oil base fluid can be defined as a drilling fluid which has oil as its continuous or external phase and the water, if present, is the dispersed or internal phase. The solids in an oil base fluid are oil wet, all additives are oil dispersible and the filtrate of the mud is oil. The water, if present, is emulsified in the oil phase.
Continue reading “Oil Muds And Its Troubleshooting”Decanter Centrifuge And Energy Materials Production
The production of raw materials for energy generation – coal, oil, and gas offers considerable scope for the use of decanter centrifuges, at least for coal and oil. The manufacture of gas is a little-used process now that natural gas is so freely available. When this phase passes, as gas availability reduces, then the gasification of coals and heavy oils will also offer good applications (as will the eventual need to convert coals into liquid fuels).
Continue reading “Decanter Centrifuge And Energy Materials Production”Centrifugal PUMPs
Centrifugal pumps are one of the most common types used in industry. It’s a device that pumps mud for solids control equipment. Figure 1 shows a generic, single stage centrifugal pump and Figure 2 illustrates a multistage centrifugal pump.
Continue reading “Centrifugal PUMPs”Drilling Cuttings RECOVERY
In an ideal borehole and mud system, cuttings would be transported to surface with the same order and composition as they were cut, as in Figure 1. In reality, it is commonly observed that, no matter how sharp a drilling break or clearly defined a formation top on an electric log, the formation top as logged from cuttings will appear to be “transitional.” (Note: not transitional in the sense that the cuttings show a varying composition, but that cuttings of a new type appear in increasing abundance as more hole is made.)
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