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Essay / Research Paper Abstract
This 9 page paper considers the different type if drilling fluids, including water-based fluids, oil-based fluids and mist gas air or foam fluids, where they are used, their properties, additives and control. The bibliography cites 5 sources.
Page Count:
9 pages (~225 words per page)
File: TS14_TEdrillf.rtf
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Unformatted sample text from the term paper:
system that determines the type if fluid that is used. There are nine main types of fluid system each have different requires from the fluid that they will use. The
first six require water based fluids, there are also systems that require oil and synthetic fluids and the final categories are those that need fluid which are gases, mists of
foams to be used as the fluid to circulate the system (OilWorld, 2002). Non dispersed system include the various types of mud, such as spud and natural mud and
other these types systems that are only lightly treated (OilWorld, 2002). The use of this type of system will generally be for top hole drilling or to drill shallow wells.
Due to the nature of this system there will be no used of thinners or dispersers to rid the fluid of the clay particles or other solids (OilWorld, 2002). The
dispersed system is used to drill to greater depths or may be used if there is a higher density level required (OilWorld, 2002). Other uses are problematic hole conditions with
the dispersal of the mud with the use of tannins, lignosulfonates or lignites (OilWorld, 2002). There are other additives that also perform a similar task, these are collectively known as
"deflocculants and filtrate reducers" (OilWorld, 2002). If shale inhibition is required there are also likely to the be addition of chemicals that have potassium in them (OilWorld, 2002). Other additives
may also be utilised to adjust the properties of the mud, or even to maintain them (OilWorld, 2002). Calcium treated systems are used where there is the addition of calcium
or magnesium to the system in order to inhibit shale swelling or the formation of clay in freshwater systems (OilWorld, 2002). The use of soluble calcium at high levels will
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