Horizontal Directional Drilling Calculator

User Manual - HDD Analyser

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Pipe steel outside diameter

D_s

Steel diameter shall be between 0 - 3000

Pipe steel wall thickness

t_s

Wall thickness shall be between 0 - 50

Pipe internal corrosion allowance

Corrosion allowance shall be between 0.0 - 15

Select Material Grade

Specified minimum yield strength of steel

SMYS

SMYS of pipe material is not within the range

Pipeline steel density

ρ_s

Incorrect Entry. Please re-enter.

Young's Modulus of Elasticity of steel

E_s

Incorrect Entry. Please Re-enter.

Poisson's ratio

ν --

Incorrect Entry. Please Re-enter.

External coating thickness [1st coat]

t_coat1

Enter value between 0 - 100

External coating density [1st coat]

ρ_coat1

Enter value between 0 - 5000

External coating thickness [2nd coat]

t_coat2

Enter value between 0 - 300

External coating density [2nd coat]

ρ_coat2

Enter value between 0 - 5000

Design pressure of pipeline

P_d

Incorrect Entry. Please Re-enter.

Minimum hydrostatic test pressure of pipeline

P_h

Incorrect Entry. Please Re-enter.

Design temperature of pipeline (buried)

T_d ^o

Enter value between 0 - 500

Ambient temperature of pipeline (installation)

T_amb ^o

Enter value between (-) 20 to (+) 200

Avg. co-efficient of friction between pipe & soil

μ_soil -

Enter value between 0.2 - 0.5

Avg. co-efficient of friction on roller support

μ_roller -

Enter value between 0.15 - 0.3

Distance between roller supports

L_roller

Enter value between 0 - 500

Radius of overbend (pipe on conveyors)

R_o

Incorrect Entry. Please re-enter value between 0 to 9999.

Drag co-efficient between pipe & bentonite mud

μ_mud

Enter value between 0 - 400

Density of bentonite in the hole

ρ_bent

Enter value between 0 - 1800

Maximum allowable longitudinal stress

F_L % SMYS

Enter value between 30 % - 100 %

Combined equivalent stress [hydrotesting]

F_H % SMYS

Enter value between 30 % - 100 %

Combined equivalent stress [operation]

F_O % SMYS

Enter value between 30 % - 100 %

Safety factor for computed elastic bend radius

F_EBR times

Enter value between 1.0 - 3.0

Fig. Typical Horizontal Directional Drilling Crossing

Horizontal length of crossing

L_h

Depth of crossing w.r.t RL

Depth

Angle of entry

θ_in deg

Angle of exit

θ_out deg

Radius of curvature (pipe side)

R_in

Radius of curvature (rig side)

R_out

Entry height w.r.t. RL

h_in

Exit height w.r.t. RL

h_out

Height of soil column above pipe

H_soil

Enter value between 0 - 999

Height of water column above pipe

H_water

Enter value between 0 - 999

Density of soil column above pipe

ρ_soil

Enter value between 50 - 5000

Density of water column above pipe

ρ_water

Enter value between 10 - 2000

Apply buoyancy control to reduce pulling load

True

Water-filled Pipe Method

Pipe-in-Pipe Method

Pipe-in-pipe diameter

Pipe-in-pipe wall thickness

Pipe-in-pipe material density

Density of fluid/water to be filled

ρ_fluid

Enter value between 50 - 2000

Send me this input for record

Horizontal Directional Drilling Design Calculation

Pipe parameter

Design parameters

Maximum Allowable Stress Percentages

Drilling profile

Fig. Typical Horizontal Directional Drilling Crossing

Parameters for maximum permissible overburden on pipe

Buoyancy control parameters

Pipe-in-pipe details