PSE: PETROLEUM STRUCTURAL ENGINEERING® SOFTWARE
STRUCTURAL ENGINEERING SOLUTION FOR ONSHORE & OFFSHORE STRUCTURES

T R I A L   R E Q U E S T

P S E   O V E R V I E W

INTEGRATED STRUCTURAL ANALYSIS, DESIGN AND EVALUATION OF OFFSHORE/ONSHORE STRUCTURES ACCORDING TO THE API 4F (4th EDITION).

The Petroleum Structural Engineering® software is used for the design and rehabilitation of drilling structures for the oil & gas offshore and onshore industry, including derricks, drilling masts, rigs and substructures. This software accounts for advanced structural analysis, wind loads, vessel dynamic motions as well as wave and current loads. Other loads such as seismic, snow and ice loads for far northern extreme weather are also considered for the design of masts, derricks, platforms and substructures.

This engineering software solution is used worldwide by several notable international companies in production work for building innovative offshore and onshore structures.

The PSE is a robust and reliable structural software based on more than 30 years of Research and Development. The program, designed with the latest technological innovations in its field, is equipped with a sophisticated and user friendly graphical interface.

ABS American Bureau of Shipping has approved the PSE Petroleum Structural Engineering® Software for the analysis and design of offshore derricks and structures.

P S E   T U TO R I A L   V I D E O S

COMPLIANCE WITH THE API 4F

COMPLIANCE WITH THE API 4F

The PSE Petroleum Structural Engineering® software is based on the API 4F (4th edition) specification for drilling and well servicing structures.

In the PSE software, wind loads, based on the velocity component approach, and vessel dynamic motions are defined according to API 4F Specification for Drilling and Well Servicing Structures (4th edition).

GO TO THE PSE SPECIALIZED WEBSITE

INTUITIVE MODELING FEATURES

EASY AND PRODUCTIVE MODEL GENERATION

•Local coordinate systems
•Linear or circular lines of constructions for model creations
•Automated commands for model creation such as move, rotate, extrude, copy, attach, subdivide and others
•Models can be edited either graphically or by means of spreadsheets
•Element can be created in batch or one by one
•Elements of the models can be selected either graphically or according to a set of criterions
•Persistent groups of selected objects can be created and edited graphically or by means of spreadsheets
•Definition of physical members
•Selection and edition of physical members
•Definition of loading surfaces
•Multiple edition grids with user defined spacing, angles and labels
•Powerful edition and automatic generation tools
•Members can be subdivided in any number of equal segments or at specific positions
•Similar connected members can be merged together
•Elements of the structure can be renumbered according to several criterions
•Element attributes can be set graphically or by means of spreadsheets (sections, analysis parameters, rotation angles, etc.)
•Element attributes can be edited in batch or element by element
•Loads can be edited graphically or by means of spreadsheets
•Contour lines for finite element plates with customized bounds
•Wizard based geometry generation
•A large number of pre-defined frames
•Circular and parabolic arches
•Cylinders and cones composed of beams and/or plates
•Physical elements concept to group different elements
•Surfaces can be used for load transfer and self-weight calculation
•Surfaces can be used to simulate diaphragm effects

ADVANCED 3D STRUCTURAL ANALYSIS

ADVANCED 3D STRUCTURAL ANALYSIS

The Petroleum Structural Engineering® software is a technology built on a powerful user-friendly interface offering comprehensive analysis options and intuitive modeling features.

The advanced structural analysis of the PSE software allows the engineer to achieve specialized analyses crucial to offshore and onshore projects related to the oil and gas industry.

L E A R N   M O R E

WIND LOADS

WIND LOADS

The API 4F specifications for wind loads based on the velocity component approach is integrated into the PSE Petroleum Structural Engineering software. Accordingly, drilling structures are classified based on their Structural Safety Level (SSL) and their offshore or onshore location.
The design reference wind velocity value represents a 3-second gust wind measured in knots at an elevation of 10 m (33 ft) in open water, with an associated return period of 100 years.

WIND ENVIRONMENTS
The API 4F specifications are applicable to the following wind environments:
- Operational wind
- Erection wind
- Transportation wind
- Unexpected wind
- Expected wind
The PSE software allows different configurations of the drilling structure models according to a given wind environment. The program requires the input of the rated design wind velocity, Vdes, and accounts for the design reference wind velocity and wind velocity multiplier. The program computes the local wind velocity, Vz, by scaling the rated design wind velocity by the appropriate elevation factor, ß, in order to obtain the velocity for estimating the wind forces.

WIND INTENSITY
A wind profile in a selected direction provides the wind intensity that generates the wind loads to structural members and surface areas. As many as required wind directions can be defined through different basic loads.

MEMBER SELECTION PROCEDURES
Member selection procedures allow the application of the wind profile to the entire structure or to specific zones and excluding members behind or in front of wind walls. It is possible to apply the API 4F wind loads directly to elements such as equipment, wind walls and other objects attached to the drilling structures.

AUTOMATED SHAPE FACTOR
The shape factor is automated in the PSE software for various section shapes. The program accounts for the gust factor and the reduction factor for shielding by members and appurtenances.

OFFSHORE VESSEL DYNAMIC MOTIONS

OFFSHORE VESSEL DYNAMIC MOTIONS

In various production wells, the offshore drilling structures are located on top decks of vessels, semisubmersible or floating hulls. Vessel motion includes roll, pitch and yaw rotations and heave, sway and surge translations.

INERTIAL FORCE
The PSE software computes the inertial forces due to the vessel dynamic motion as well as radial, tangential and translational forces due to the acceleration of masses attached to the drilling structures. These forces have a significant influence on the structural design and reliability of offshore structures.
The PSE software accepts three types of user input in order to estimate the inertial forces induced by the vessel dynamic motions:
- Linear displacements, angular rotations and time periods
- Linear and angular velocities and accelerations
- Linear accelerations at two points in the vessel which are converted to linear and angular accelerations by the program.

WEIGHT DATA
High pressure mud piping, electrical cable trays, junction boxes, racking boards, tong counterweights, turning sheaves, deadline anchors, crown accessories, casing stabbing baskets and other outfitting items add weight to the derrick. Weight data is converted to masses applied at the correct locations on the derrick.

WAVE & CURRENT LOADS

WAVE & CURRENT LOADS

The PSE software computes wave and current forces applied on the structural members. The wave kinematics can be established using either Airy’s linear theory or Fenton’s nonlinear theory.

NONLINEAR KINEMATIC THEORY
The linear kinematic theory is valid where the wave height is small compared to the water depth. On the other hand, the nonlinear kinematic theory, proposed by J.D. Fenton, solves the motion equations by representing the velocity potential and surface elevation with a Fourier series. The later method minimizes the error of each parameter governing the wave motion equations and is valid over the entire spectrum.

WAVE PROFILE
The PSE software accounts for the following wave profiles and kinematic parameters:
- Wave period
- Incidence angle
- Elevation of the sea bed
- Elevation of the still water line (SWL)
- Kinematic reduction factor
- Crest position criterion
A preview of the wave surface profiles, velocities and accelerations at any point is readily available.

CURRENT PROFILE
With the PSE software, the current profile is described with respect to the sea bed. The current speed is defined by a set of elevation-velocity-angle triplets and the reduction of the current speed in the vicinity of the structure or the blockage factor is accounted for.
In order to combine the current with the wave profile, the current needs to be stretched, or compressed, to the local wave surface. Two stretching methods are available:
- The linear stretching method, also known as the Wheeler stretching
- The non linear method or hyperbolic stretching

DOPPLER EFFECT
According to commentary C.3.2.1 of the design code API RP-2A- 2003, the Doppler effect is accounted for by calculating an apparent period defined as the wave period as seen by an observer moving with the current.

EFFECT OF MARINE GROWTH ON MEMBERS
Marine growth increases the cross section diameter and surface roughness of the members, and it is defined by a set of elevation-thickness pairs.

MEMBER WAVE LOADS
The input for the member wave loads consists of the following six parameters:
- Current profile
- Wave profile
- Marine growth profile
- Drag coefficient
- Inertia coefficient
- Shielding factor

MEMBER FORCES
The member forces, calculated using Morison equation, vary according to the position of the waves with respect to the structure. In order to obtain the maximum forces in the members, the critical position of the wave crest is determined by the program.

DISPLAY FEATURES

DISPLAY FEATURES

•3D solid display of all section shapes
•Ultra-fast 3D visualization in wire frame or solid modes
•Customized display of all graphical objects
•Partial model visualization
•Results can be displayed on screen for the whole or a part of the structure
•Results can be displayed for each element separately by means of graphics and numerical results spreadsheets
•Results can be displayed for a set of elements by means of numerical results spreadsheets
•Graphical display of seismic and dynamic analysis results
•Model size limited only to the physical capacity of the computer

FILES IMPORT

FILES IMPORT

The PSE Petroleum Structural Engineering® software can directly import models from the StruCAD*3D (ZenScad) program and the SACS (Bentley Systems incorporated) program.

DATA EXCHANGE
•AutoCAD interface to import and export models by way of a DXF file
•The SDNF (Steel Detailing Neutral File) interface exports beams, columns and braces to SDNF compatible detailing softwares
•The KISS (Keep It Simple Steel) interface exports beams, columns and braces to KISS compatible estimation softwares
•If required, members subdivision and account for physical elements will be carried out automatically
•The solid view of the structure may also be exported when exporting to AutoCAD