Mathcad in Oil & Gas

2© 2006 PTC

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Mathcad – Improving Personal & Process Productivity

> Personal Productivity:– Mathcad is the right tool for Engineers – EXCEL is NOT!– Addresses needs and concerns of individual engineers and department managers

• Natural math notation• Documentation• Units management• Enables capture and reuse of IP

> Process Productivity:– Mathcad is the right tool to Preserve Intellectual Property, Reduce Design Iterations, allow

for Information Sharing, enable Regulatory Compliance, & Integrate with a complete PDS System

– A strategic investment for the Enterprise

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Overcomes Inefficiencies of Traditional Tools

© 2010 PTC

1. Hand Calculations / Reference Material Easy to use and everyone has it But audit process is a complete re-work to check EVERY

calculation, correct unit-handling, etc It’s strictly a static documentation solution – modifications or reusability requires a

re-write

2. Excel (& Word) ~ Pervasive, but Imperfect Excel - live calculations but formulae hard to read – auditing difficult/lack of documentation in one tool

No “units” management (eg Mars Explorer issue, etc) Prone to error re-use (90% of spreadsheets over 150 rows)

3. Programming-based Solutions Very specialized capabilities, requires very fluent users (non-engineers) Geared toward heavy analysis/simulation (where applicable) Typically a high learning curve, low reusability, not for documentation

Mathcad ~ addresses clear, documented, reusable engineering solution

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Issues with Excel

Live calculation but formulae hard to read

No “units” management

Auditing difficult

No support for advanced math calculationsCalculusDifferential equationsEtc….

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Mathcad vs Excel

=($B$1*$D$1/2)*((PI()*$F$1*$D$1-$H$1)/(PI()*$D$1+$F$1*$H$1))+$B$1*$F$2*$D$2/2

=9.774428429

Spreadsheets

Mathcad:

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Rolls-Royce - Loughborough University Excel Accuracy Study: Radius of Curvature

2 2 2c cx x y y r

Mathcad Excel

Xc117.216 117.208

Yc50.997 50.989

r 50.168 50.161

© 2006 PTC

Proscan

Excel Method• Calculate sum of squared deviations

• Used Solver to find the unknowns

Mathcad Method• Used Leastsquare statistical solver

Results

• Mathcad confirmed as being the correct answer

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What is Mathcad?

This is Mathcad

=($B$1*$D$1/2)*((PI()*$F$1*$D$1-$H$1)/(PI()*$D$1+$F$1*$H$1))+$B$1*$F$2*$D$2/2

This is not!

8© 2010 PTC

> Intuitive – Easy to use, whiteboard interface– Natural math notation

> Comprehensive– Combines live math, text, graphics, and programs

in a single readable form– Powerful numeric and symbolic math– Manages units automatically

> Self-documenting– Traceable, readable form for

verification & re-use

Personal Productivity

Mathcad’s continued power as a personal, engineering tool

9© 2010 PTC

> Engineering focused – Research– Exploratory design– Design– Supporting calculations– Verification– Analysis and optimization

> Presentable and readable– Legible natural math, text, graphics,

in a single readable form– Live and easy-to-understand– Manages units

Personal Productivity

Mathcad’s continued power as a personal, engineering tool

10© 2010 PTC

Use Cases

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© 2010 PTC

Major O&G Companies are Standardising on Mathcad

Maersk, Drilling Operations

Audit requirements to ISO 5167 on metering devices for oil/gas flow. Excel made iterations difficult and little transparency. Mathcad is used for all auditing/checking.

Previous tools used — hand written calculations, calculators, spreadsheets, programming solutions, etc

Smith Rea, Metering Performance

Subsea7, Pipelines & Structures

Mathcad used to analyse and communicate drilling performance calculations between on-shore andoffshore teams – resulted in significant drilling performance and production improvements

Mathcad is the critical tool for performing & documenting all pipeline and structural calculations to ISO and DNV specifications.

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Saipem Energy International (SEI) is an offshore engineering company. SEI combines its know-how and engineering design skills of the Saipem with its experience of construction, management and marine operations.

.

Application of Mathcad to perform a probabilistic study and plot the results. Looking for an intuitive and light tool which could assist in performing the analysis without knowing any programming languages

Mathcad worksheet to support decision about the subsea valves location and installation, instead of adopting common rule-of-thumb techniques. Future work will improve the description of the impact scenario and the pipeline response to the load. In particular, a structural-reliability based analysis with Mathcad will be utilized for evaluating the failure probability given the impact

Perform a Risk Assessment of Pipeline Protection (Dropped Object Study) which is a risk-based approach for assessing pipeline protection against accidental external loads like dropped crane loads on offshore risers, pipelines and umbilicals

BUSINESS INITIATIVE

RESULTS

SOLUTION

“We have chosen Mathcad due to ease of use, self-explaining, intuitive application and full capability of developing the integral/differential equations for the probabilistic assessment; moreover the Mathcad worksheet is easily managed by every HSED Engineer.”What you see is what you get…this is what we needed and what we got…Mathcad!

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Oil & Gas Reference: www.drillers.com

© 2010 PTC

The Electronic Drilling Manual:

Online mathematical capability, which allows a logged-in subscriber to carry out mathematical operations with pre-defined Mathcad worksheets for a variety of oilfield operations with only a web browser.

Plan to expand this capability to assist Drilling Engineers and Supervisors to plan and drill wells safely and cost effectively.

Oil & Gas

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Solution: Selected Mathcad

Deployed a highly accessible tool for calculations & documentation

Standardised on Mathcad for all engineering calculations

Standard: Mathcad is now a best practice

Drilling performance and production improvements resulted from more effective calculations and communication

Oil & Gas Reference

Peter AirdMaersk Oil

Management’s Key Objectives:

• Streamline communications

• Improve quality

• Improve performance

Situation: Used spreadsheets, hand-calcs & ‘best-guess’ to analyse and communicate drilling performance calculations between on-shore and offshore teams

Inconsistent results because of different methods of calculation

Significant margins of error incorporated due to lack of confidence in accuracy of calculations

Oil & Gas

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Weatherford International

• 55,000 employees • Global sales of $ 10 billion• Offices: in 100 countries…

• Houston, TX• Other U.S. sites• Aberdeen, Scotland• Singapore• Canada• Germany

• PTC software• Creo Parametric• Windchill Foundation• Windchill PDMLink• Mathcad• Arbortext

• Mathcad is a best practice• Standardizing has led to improved global

communication and re-use.• Significantly raised the quality of products

Business Iniatives• Increase Efficiency – Delivering

results to clients worldwide. • Increase Productivity – Reduce costs

and increase well productivity.

PTC Solution• Standardized on Mathcad for

calculation and documentation.• Replaced Excel, mostly.• Used to capture all of the complex

equations used with suppliers and buyers

“I couldn’t be happier with Mathcad’s calculation engine; it’s very intuitive. I calculated the pressure wave timing in a subsea hydraulic control system application, and was able to reduce the operating time from 50 minutes to 6 minutes! I would not have figured this out without Mathcad.“ - Clark Robison, Weatherford

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BUSINESS INITIATIVE

Gaz de France has to maintain high safety and reliability levels for their facilities while optimising the operating costs of networks. The teams of the Transmission Technologies Section offer methods, tools and guidance for the design, construction, operation and maintenance of pipelines (inspection, defect assessment and repair, and risk prevention management).

Gaz de France (France)

SOLUTION

RESULT(S)

Consolidate 7 extensive Microsoft Excel spreadsheets into 1 Mathcad worksheet.

With Mathcad, Gaz de France has achieved better verification of calculations; Excel calculations often contained errors which could not be checked easily

With Mathcad, engineers have saved significant time in verifying and auditing calculations

2 days of work to migrate all Excel spreadsheet data tables and rewrite complex formulas in Mathcad.

PREVIOUS PRODUCT USED OR EVALUATED: Microsoft Excel Spreadsheets

Thank you

Require more info? contact: Sebastien Coulon, scoulon@ptc.com