What is pilot test in drilling fluid?
1. n. [Drilling Fluids] An experimental test, or series of tests, used to predict mud behavior and guide future actions by the mud engineer.
What are the types of drilling fluid?
Types of fluids. Drilling fluids include three main types: water-based muds, oil-based muds, and air.
What is formation fluid in drilling?
1. n. [Well Completions] Any fluid that occurs in the pores of a rock. Strata containing different fluids, such as various saturations of oil, gas and water, may be encountered in the process of drilling an oil or gas well.
What are drilling fluid additives?
Fluid Loss Control Additives help control fluid loss into the formation and protect reactive shale formations during drilling. These additives thin the mud by separating particles so they can be carried out of the hole by the drilling fluid. Lignite, desco, and lignosulfonate are common types of dispersants.
What is a pilot well?
Pilot wells offer a means to appraise identified locations before committing to drilling horizontal wellbores. A pilot well is often used in Mubadala Petroleum drilling campaigns as part of an overall strategy to extend the field’s life by continuing to locate and tap remaining oil accumulations.
What is the most common drilling fluid?
Aqueous drilling fluids, generally referred to as water-base muds, are the most common and the most varied of the three drilling fluid types (Figure 1). They range in composition from simple blends of water and clay to complex inhibitive, or clay stabilizing, drilling fluid systems that include many components.
What are the three basic components of a drilling fluid?
The three main categories of drilling fluids are: water-based muds (WBs), which can be dispersed and non-dispersed; non-aqueous muds, usually called oil-based muds (OBs); and gaseous drilling fluid, in which a wide range of gases can be used.
What base we choose the drilling fluid?
There are three broad categories of drilling fluids: • Pneumatic fluids, which use compressed air or gas, foam and aerated muds; • WBMs, which use water or brine as the base fluids; and • NAFs, which use oil or other non-aqueous base fluids called OBMs or SBMs.