Scribd
Upload
261 views3 pages

Rig Components

This document describes the key components of a drilling rig, including: 1) the derrick/mast and other rigging equipment used to lift and lower drill pipe, 2) mud pumps and other equipment used in circulating drilling fluid, and 3) engines used to power the rig components. It also provides examples of calculations for various rig parameters, such as output power, input power, line tension, hoisting speed, derrick load, and efficiency.

Uploaded by

Ugochukwu Kelvin Nsaka
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
261 views3 pages

Rig Components

This document describes the key components of a drilling rig, including: 1) the derrick/mast and other rigging equipment used to lift and lower drill pipe, 2) mud pumps and other equipment used in circulating drilling fluid, and 3) engines used to power the rig components. It also provides examples of calculations for various rig parameters, such as output power, input power, line tension, hoisting speed, derrick load, and efficiency.

Uploaded by

Ugochukwu Kelvin Nsaka
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 3

Well Drilling and Completions I

Spring 2011
PETR6368/PETR5368
Rig Components

Rig Components:

1. Derrick/Mast/Substructure/A-Frame
2. Crown Block/Traveling Block/Sheaves
3. Swivel
4. Kelly/Kelly Bushing
5. Kelly hose
6. Standpipe
7. Rotary Table
8. Hook
9. Drawworks/Auxiliary brakes
10. Deadline Reel/Dead end anchor
11. Mud Pumps
12. Mud tanks/agitators
13. Trip Tanks
14. Shale Shaker
15. Desander/Desilter/Degasser/Centrifuges
16. BOP preventers(Ram,Shear,annular..)
17. Accumulators
18. Choke and Kill lines/Manifolds
19. Catwalk/Monkey board
20. Diesel Engines
21. Controls/monitoring system
22. Bull lines
23. Instruments and Controls
24. Dog House
25. Rat hole/Mouse Hole
26. …

Miscellaneous tools:

1. Single(~30’)/Doubles(~60’)/Tripples(~90’)
2. Stands
3. Slips (pipe, drillcollar, casing)
4. Tongs
5. Elevators
6. Kelly Spinner
7. Mud basket
8. …
Fluid Circulation System:

1. Mud Pump
2. Booster Pump
3. High Pressure Surface Connections
4. Drill string
5. Drill bit
6. Return Annulus
7. Mud pits
8. Mud Hooper
9. Mud treatment equipment
10. …

Engine Power Generation


The overall efficiency of power generating systems may be defined as:
output power P
Efficiency (%) = × 100 η = 0 × 100
input power Pi
2πNT
Output Power Po = hp
33000

where
T = output torque in ft-lbs
N = engine rotary speed in revolution per minute
Qf H
Input Power Pi = hp
2545
where
Qf = rate of fuel consumption in lb/hr
H = fuel heating value in BTU/lb

Supplementary Example 1:
Engine Speed 1500 rpm
Engine Torque 1800 ft-lbf
Fuel Consumption 30 gal/hr
Calculate
1. output power of the engine
2. Input power
3. overall efficiency of the engine
Output Power developed by the engine
2π × 1500 × 1800
Po = = 514hp
33000
Input Power
216 × 19000 × 779
Pi = = 1615hp
33000 × 60
Overall Efficiency of the Engine
514
η= × 100 = 31.83%
1615

Supplementary Example 2:
Overall Block efficiency factor is given as E = 0.978 n
Calculate efficiency factor for 12 lines
E =.76.57%

Supplementary Example 3:
Drawworks Input Power 500 hp
Hook load needed to be lifted 400 kips
Number of lines strung 12
Calculate
1. Fast line tension
2. Maximum hoisting speed

Fast line tension


W 400
Ff = = = 43,290 lbf
nη 12 × .77
Maximum hoisting speed
ft − lb
385hpx33000 / hp
P0 min
vtb = = = 31 ft / min
Fh 400000
Ls 93 ft
t= = = 2.93 min
vtb 31 ft / min

Supplementary Example 4:
Drawworks Input Power 500 hp
Hook load needed to be lifted 400 kips
Number of lines strung 12
Calculate
1. Derrick load
2. Equivalent derrick load
Derrick Load
 1 + E + En   1 + .77 + .77 × 12 
Fd =  W =  400 ,000 = 476.6kips
 En   .77 × 12 
Equivalent Derrick Load
n+ 4  16 
Fde =  W =  400 ,000 = 533.3kips
 n   12 
Derrick Efficiency

476.6
ηd = × 100 = 89.39%
533.3

You might also like