Page 100 - Formulas and Calculations for Petroleum Engineering

Drilling engineering formulas and calculations Chapter 2 93

Formula(s)

2 2
0:5
ð 1:08 PVÞ +1:08 PV +12:34 * r m* D * YP
i
V ¼
c
r D
m i
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 220.

2.42 Crown block capacity

Input(s)
H l : Net Static Hook Load Capacity (lb)
S: Effective Weight of Suspended Equipment (lb)
n: No. of Lines Strung to the Traveling Block (unitless)

Output(s)
R c : Crown Block Capacity (lb)

Formula(s)

ð
ð H +SÞ n+ 2Þ
l
R ¼
c
n
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 26.

2.43 Current drag force—Offshore
Input(s)

2
g: Acceleration due to Gravity (ft/s )
V c : Current Velocity (ft/s)
C s : Drag Coefficient (dimensionless)
2
A: Area (ft )

Output(s)
F: Current Force (lbf)

Formula(s)

2
F ¼ g V C A
c s
Reference: Samuel. E Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant. 2015.
Houston, Texas, Page: 37.