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THE DRILLING MUD FLUID IS HAVE MANY FUNCTION IN OIL WELL DRILLING LIKE
(a) to lift the cutting, (b) to give cooling effect of bit (c) control the wellbore pressure (d) act as a lubricater (e) hole stabilizer etc.
The main functions of drilling fluids include providing hydrostatic pressure to prevent formation fluids from entering into the well bore, keeping the drill bit cool and clean during drilling, carrying out drill cuttings, and suspending the drill cuttings while drilling is paused and when the drilling assembly is brought in and out of the hole. The drilling fluid used for a particular job is selected to avoid formation damage and to limit corrosion.
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What is the Composition of drilling mud?
Water-based drilling mud most commonly consists of bentonite clay (gel) with additives such as barium sulfate (barite), calcium carbonate (chalk) or hematite.
What is blind drilling in oil and gas industry?
If there are natural fractures in a reservior & there is a risk of too much loss circulation of drilling fluid then we go for blind drilling where drill cuttings are deposited on fractures & fill them to avoid loss circulation during drilling to getting good production. efhim.ru
What tools is used to dig oil wells?
Oil wells are made using a drill. A diamond/carbide embedded drill bit is attached to the end of lengths of hollow pipe which are rotated on the drilling platform and tower called a 'derrick'. Drilling mud is pumped down the drill pipe and out of nozzles in the drill bit to steer the drill and to flush debris out of the drilled hole. The weight and properties of the drilling mud are very important if you are to prevent blowouts such as that which happened in the Gulf recently.
How is petroleum extracted from the ground?
Petroleum is extracted by different processes. 1. Drilling 2. Well Completion 3. Production System and facility design (Plant) 4. Storage or Shipment Drilling: It is first process in the petroleum extraction. The drilling is same like drilling for orifice in the wall, but it is large in scale. The machine that drill the well is called as " Drilling rig". The drilling rig has main four function. a. Rig Power System: Either by diesel engines or by electric engines b. Hoisting System: c. Circulating System d. Rotary system e. Well control system: By BOPs, like Pipe Ram, Annular Preventor, and Shear Ram etc. f. Well monitoring System:
How does man extract the groundwater?
Through drilling wells
Is drilling mud a chemical?
Yes, it is. Drilling fluids, the circulating fluid for drilling operations, is a mixture of the fluid, the solid and chemical agents. It is usually known as the "mud" or the "blood of drilling" deriving from its distinctive significance.
What is the function swivel in drilling rig?
the swivel has three functions: -to conduct drilling mud -to cease the rotary movement -to sustain
What is filter loss mud cake?
Filter loss refers to the amount of drilling fluid lost into the formation while drilling a well. Mud cake is the layer of filter cake residue that forms on the borehole wall when drilling fluid is filtered into the formation. Filter loss mud cake is the specific term used to describe the formation of a mud cake due to filter loss during drilling operations.
Function of circulating mud system?
Drilling fluids circulating mud system is an important and obligatory constituent part in the modern drilling equipment, it can keep the mud normal circle and stable performance in drilling process, ensure drilling works on the premise of safety, environmental protection and high efficiency.
Various drilling mud have the same apparent viscosity at 1022sec-1 but the effective viscosity at other shear rates may vary widely Explain?
Drilling mud is a nonnewtonian fluid. It's a thixotropic fluid and it's apparent viscosity is a function of shear rate and time so at various shear rate and times you will have various viscosities. The molecular structure of these fluids breaks during tention.For further informations you can refer to rheology or fluid mechanics books.
What is spotting fluid in drilling mud chemical?
this chemical is used to release stuck pipes.Two types of spotting fluids ,spotting fluid (w) and spotting-fluid (nw)
Why returning drilling fluid contain gas when drilling through a resevour?
whenever you are drilling through the pay zone, gas contained zones or shallow gas zones there is the risk of having gas in the mud. As you are circulating the mud throthe annulus if the hydrostatic pressure of the column of mud in the annulus is less than the formation pressure then the gas will rise. Note that the gas can be contained in the mud which is called gas cut mud.
Fluid flow in an annular space?
Fluid flow in an annular space occurs during a drilling operation of the gas and oil well. The correct prediction of the flow lies in the drilling mud in the annular space between the well.
Why use drilling mud for oil drilling?
It's used to prevent anything coming back up the hole. Drilling fluids, the circulating fluid for drilling operations, is a mixture of the fluid, the solid and chemical agents. It is usually known as the "mud" or the "blood of drilling" deriving from its distinctive significance. The main functions of drilling fluids include providing hydrostatic pressure to prevent formation fluids from entering into the well bore, keeping the drill bit cool and clean during drilling, carrying out drill cuttings, and suspending the drill cuttings while drilling is paused and when the drilling assembly is brought in and out of the hole. The drilling fluid used for a particular job is selected to avoid formation damage and to limit corrosion.
What is oil emulsion mud?
Water based drilling fluid that contains dispersed oil or synthetic hydrocarbon as an internal phase.
How much does drilling mud weigh?
Drilling mud can weight out at different ranges from 7.6 to 18.0 obm
Which are the objectives of the drilling mud?
Oil base mud
