Water Base Drilling Fluid

Definition - What does Water Base Drilling Fluid mean?

Water Base Drilling Fluid is drilling mud that has saltwater or water as its major liquid component. It is also sometimes referred to as water mud. This drilling fluid is used as a wetting agent in the external phase of drilling operations. It can be categorized into seawater, fresh water, salt water, potassium, lime and silicate. Due to its composition, water based mud is less prone to affecting the environment throughout the offshore drilling operations.

Petropedia explains Water Base Drilling Fluid

There are three types of drilling fluids used to carry out drilling operations in an oil well, i.e., water based, air based and oil based drilling fluids. Water Base Drilling Fluid is the most common mud system that is employed in the drilling operations. It is less expensive and easy to maintain as compared to oil mud system. However, water mud is known to cause change to the mechanical properties of a rock after entering the formation. If the water mud modifies the properties of the rock, it may lead to unsteadiness of the borehole and cause permanent damage to the formation. A lot of water is required in composing Water Base Drilling Fluids to conduct hydraulic fracturing as these are injected with high pressure into a wellbore.

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