Our task: Enabling safe and effective operations

Siemens Process Safety Consulting offers technical expertise to industry challenges and solutions in maintaining the robustness of your facility while reducing risk, optimizing cost and helping ensure compliance.

Our goal: Local support on a global scale

Our reputation is backed with decades of experience serving midstream and upstream oil and gas, refining and petrochemical companies worldwide. With a best-in-class global customer support structure, local support offices and remote services ensuring support even at the most remote locations.

Our offer: Comprehensive engineering services and industry-driven solutions

design engineering

Trusted advisor for your last line of defense

Pressure relief and disposal systems serve as a critical piece of your facility’s safety system and are the last line of defense against catastrophic equipment failures. With constant changes in a facility each year from safety initiatives or capital projects to changing corporate, local, or federal regulations or acquisitions can make it difficult to keep your relief system documentation up-to-date.

Siemens relief and disposal system consultants are experts in pressure relief analysis standards and guidelines such as OSHA 1910.119 (d), API 520, API 521, API 2000 and are contributing members for many API standards and recommended practices. With our expert knowledge, a comprehensive pressure relief analysis may mean:

  • Increased efficiency in HAZOPs, PHAs and MOC evaluations

  • Maintenance cost reductions

  • Identification of design failures resulting in loss of product

  • Identification of opportunities for inherently safer design

Core Capabilities

  • Comprehensive Pressure Relief Analysis (PRA)

  • Engineering services providing risk assessment and mitigation plans for concern resolution

  • Flare analysis and conceptual flare header design

  • Flare Quantitative Risk Analysis (QRA)

  • Dynamic simulation

  • MOC Support and evergreening

  • Third-party auditing

  • Guideline development

  • Pressure Relief Analysis and Flare Analysis Best Practices Training

  • Software implementation for Process Safety Pressure Protection Manager™, PSPPM™

For more information regarding Relief and Disposal System Services, please contact Siemens at

Oil and Gas Manager™ (OGM™)

OGM is an industry leading software driven by process simulation for feasibility evaluation, concept selection and design, and cost estimation of upstream and midstream oil and gas development and brownfield projects.

Driven by first principles and process simulation, OGM is a one-of-a-kind program offering a rapid consistent approach implemented by major oil and gas companies worldwide for field development planning. It plays an important role in the oil and gas greenfield and brownfield development and modernization lifecycle. Various aspects such as drilling and completion of production wells, logistics, accommodation, process configuration and export of hydrocarbons from the production facility for sale are evaluated in terms of size, weight and cost of engineering, procurement, construction, hook up, commissioning and startup.

With OGM, Owner/Operators, EPCs and engineering consulting firms can consolidate their design practices in a single tool to rapidly develop and assess concepts and project deliverables that are linked to an auditable trail of management decisions.

OGM Benefits

Field Development Planning

  • Facility costs provide input for evaluation of field economics

  • Optimize process design by assessing the impact of changes in production profiles
    Feasibility Studies

Feasibility Studies

  • Compare multiple production concepts quickly & consistently

Conceptual Engineering

  • Automate engineering calculations and customize cost norms to reduce effort for a complete initial design and facility cost estimate

  • Get consistent and traceable results by incorporating design preferences, benchmarks, and past project experience

  • Evaluate greenfield or brownfield design change impacts quickly & consistently


  • Significant saving over using customized spreadsheets and in-house tools

  • Collaborative tool that enables the experience of the entire project team to be incorporated

OGM Features

Building Block approach

  • Drag and drop icons for field layout

  • Choose from a number of standard facilities including but not limited to FPSO, SPAR, TLP, Subsea, Pipelines, Compressor & Pump Stations

Process modelling

  • Built-in process simulator determines process, hydraulic, and utility parameters used to calculate sizing and cost for entire field

  • Most offshore and onshore upstream and mid-stream concepts can be modeled

  • Brownfield modeling – compare the impact of the changes in production profile on existing design case

Repository of cost data

  • Out of the box Cost indices from published sources provide centralized, source for cost norms

  • Customizable cost norms based on your cost data sets

User Experience

  • Tree design for easy access to details

  • Use as standalone or corporate wide

  • Secure access to the program

  • Save case history

  • Case management for multiple users in network installation mode

OGM Outputs

  • On Screen process streams data sand visual field arrangement

  • Reports – More than 50 reports for Management, Engineers, Cost Estimators,

  • Toggle report output between Excel and PDF for output format

  • Multi-case graphs for sensitivity analysis

Frequently Asked Questions

When is the best time to use Oil & Gas Manager?
OGM is designed to be used through all upstream project stages, with a primary purpose of supporting and accelerating the feasibility, concept screening and design phases. Latter project stages can benefit from OGM as a “what-if” tool, incorporating late design and data impacts such as production changes, weight report and as-built information during the construction phase. The operations phase can also utilize OGM both in planning for operations through use of the production profile modeler and operational cost model, and in analysis of brownfield modifications and debottlenecking studies.

How can OGM help my company make better field development planning decisions?
OGM provides a consistent and auditable approach to the capital appropriation process (also sometimes called value assurance), which progressively allocates larger amounts of capital as the project becomes better defined. The variability of information in early project stages requires a flexibility and rapid deliverable preparation that only OGM can provide – helping your company make the best decision in the most efficient manner.

We already use similar software. Why should I switch to OGM?
Of similar products used in the concept selection process, in-house or third party, most are based on historical datasets and extrapolation. OGM is unique as it provides first principles-based equipment sizing, design and cost estimation. The production fluid-based approach allows technical quantities to be calculated, which are then combined with customizable unit rate and commodity pricing information to produce cost estimates. The level of detail available for process and utility systems, pipelines, substructures, and other field objects allow the development planner or project engineer to adjust the model to account for local variability, benchmark data, and other influences. All cost outputs can then be traced back to the relevant user inputs, calculated technical quantities, and unit rate values, thereby avoiding the black box approach of most early phase cost estimate methods.

What is OGM’s accuracy rate?
The accuracy of the design and cost estimate depends on several factors, amongst others the phase of the project development and the available and relevant input data.  A first pass estimate using OGM “out of the box” can typically provide results in the 35-40% range for early feasibility and concept selection. By employing methods such as benchmarking and review of localized cost inputs, the accuracy range can be improved. Several clients have reported accuracies in the 10-15% range when using these methods. It should be noted that in early phases, fluid data and other inputs are provided at a relatively low confidence level. As the confidence level of inputs improves, naturally the variability of results will decrease.

How often are the cost indices and unit rates updated?
Typically we provide updates on equipment cost indices and unit rates.

For more information regarding OGM or to request a product demonstration, please contact Siemens at