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Know About The Working Mechanism of Drilling Fluids

by:WORKSITE     2020-07-14
Drilling fluids, often called as drilling mud, are used to be added to wellbore. It is done for the purpose of continuing the drilling procedure in an efficient manner. There are many engineering applications involved in this process such as pressure controlling, cooling, suspending cuttings, providing buoyancy, lubricating and stabilizing bare rock. In the early age of civilization (300 BC), China has first introduced this Drilling fluids technology to the world. They used this technique for the purpose of infusing soil with water while boring for hydrocarbon. 'Drilling mud', the term, came into play when the drilling mechanism was run by a herd of cattle in a watery field. They used the mud in the drill for lubricating purpose. Although the real-time technology for drilling fluids has evolved till date and it has become extensively complex, the basic concept still remains the same. A successful drill work can never be accomplished without fluid. This technology ensures maximum recovery and minimum time for the whole process. Suspending cuttings Cuttings are essential and it is mandatory at the time of drilling. However, this is a safe procedure. A drill bit requires periodical replacement or it may display other mechanical problems. When this happens, there is no room for drilling fluids. The cuttings take place at this stage and then the process of filling the hole starts up again. Here the fluids act as a suspension mechanism. Whenever the movement decreases the gluiness of the drilling fluid rapidly increases. It allows the fluid to have liquid stability. Then, it gets turned into a solid substance when drill gets stopped. It is the moment when cuttings are suspended until the drill is inserted. The moment, the drill starts again, this gel-like element turns into a liquid form. Rock stabilization It is an important function in Drilling-fluids technology. Rock stabilization is a process that requires specially made additives. It is to ensure the non-absorption of fluid by the exposed rock formation deep in the well. It also helps in cleaning the pores and it never gets clogged. Buoyancy The longer the drilling goes, the more pipes are required. High amount of pipe usage leads to the process of adding buoyancy. It reduces stress to a great extent. The fluid certainly helps in minimizing friction with the rock. This process also reduces heat. This is done through the cooling and lubricating process and it significantly prolong the drill bit life. Types of fluids In the process of contemporary drill, water, synthetic based fluid or oil is used. Each element provided specific solutions for drilling a well. Therefore, it is the best way to check the soil characteristic first before applying any of these fluids. In case the rock formation has a salt or clay composition, it take right decision and pick the right fluid from the lot. There are some situations; the drilling experts can effectively reduce stress and friction by adding fluid additives throughout the whole process of drilling. It helps them in achieving the exactly level of buoyancy and minimizes friction as per the situation demands. A professional drilling engineer seriously considers the environmental impact when applying a specific type of chemical composition. It is safe to use oil based fluids in a drilling work with salty rock composition. Disposal of such fluid waste after their respective usage is also a necessary task.
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