What is the drawworks on a rig?


What is the drawworks on a rig?

1. n. [Drilling] The machine on the rig consisting of a large-diameter steel spool, brakes, a power source, and assorted auxiliary devices. The primary function of the drawworks is to reel out and reel in the drilling line, a large diameter wire rope, in a controlled fashion.

What is an AC rig?

On an AC powered rig, AC generator sets (diesel engine plus AC generator) produce alternating current that is operated at variable speed via a variable-frequency drive (VFD).

What is power system in drilling rig?

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 Cathead in drilling?

1. n. [Drilling] A clutched spool connected to the drawworks power system used to tension chains, cables, and softline rope.

What does SCR stand for on drilling rigs?

Electric Rig (SCR): A drilling rig that uses diesel generators to supply power to separate electric motors to power each of the rig’s components (silicon-controlled rectifier).

What is prime mover in drilling rig?

1. n. [Drilling] The source of power for the rig location. On modern rigs, the prime mover consists of one to four or more diesel engines. These engines commonly produce several thousand horsepower.

What is well control system?

The Well Control System or the Blowout Prevention System on a drilling rig is the system that prevents the uncontrolled, catastrophic release of high-pressure fluids (oil, gas, or salt water) from subsurface formations. These uncontrolled releases of formation fluids are referred to as Blowouts.

Is a draw considered a salary?

A draw is not a salary, but rather regular payouts instead of periodic ones. For example, an employee receives a draw of $600 per week, and you give out the remaining commissions at the end of every month. When you give the employee their draw, subtract it from their total commissions.

Do you have to pay back a draw?

The parties will then negotiate different commission percentages for sales made against the draw. In this arrangement there is no concern that the salesperson will ever be expected to pay back any of the monies earned as a draw. It is understood that the draw is for the sales person to keep forever and ever.