How does mud work in oil drilling?
drilling mud, also called drilling fluid, in petroleum engineering, a heavy, viscous fluid mixture that is used in oil and gas drilling operations to carry rock cuttings to the surface and also to lubricate and cool the drill bit.
What is mud circulating system?
The drilling fluid circulating system is like a close loop electric circuit through which drilling fluid (i.e. mud) can travel from the surface to all the way downhole and back to its initial point (i.e. mud pit). The cuttings are then separated from the mud, which is then recycled. …
What is the function of drilling mud?
The function of drilling muds conduct cuttings away from the drill face, provide a hydrostatic head that counters the pressure of gas or oil, and provide a physical and chemical means of stabilizing and protecting the rock formation that is being drilled.
How does mud rotary drilling work?
In mud rotary drilling, fluid is pumped down the hollow drill pipe, called the kelly, and forced out of jets in the drill bit. That fluid then carries the cuttings, or cut materials, through the hole and up to the surface and the mud is reused either thru a mud containment system or pit.
What are the drilling methods?
Drilling Methods
- Air Rotary Drilling Method.
- Bucket Auger Drilling Method.
- Cable Tool Drilling Method.
- Down the Hole Drilling Method.
- Reverse Circulation Drilling Method.
- Mud Rotary Drilling Method.
What is rig system?
• Well control system. The rig is basically comprised of a derrick, the drawworks with its drilling line, crown block and traveling block, and a drilling fluid circulation system including the standpipe, rotary hose, drilling fluid pits and pumps.
What is circulation system in drilling?
The circulation system on the rig is the system that allows for circulation of the Drilling Fluid or Mud down through the hollow drill string and up through the annular space between the drill string and wellbore.
What is rig power system?
The power system on a drilling rig usually consists of a prime mover as the source of raw power and some means to transmit the raw power to the end-use equipment. The prime movers used in the current drilling industry are diesel engines.
What is the pH of drilling mud?
Maintaining the pH of drilling fluid at 8.0 to 10.5 has been reported by using conventional chemical such as soda ash (Na2CO3) and the hydroxides of: sodium (NaOH), potassium (KOH), and calcium (CaOH2).
What is rotary drilling rig?
Rotary drilling is used to form a deep observation borehole or for obtaining representative samples of rock. The drilling method involves a powered rotary cutting head on the end of a shaft, driven into the ground as it rotates. There are two types of rotary boring, open-hole and core drilling.