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Engineers and Consultants to the Oil and Gas Industry |
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The Oil & Gas Division of Sir Fredrick Snow & Partners Ltd. |
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8th Floor, Corinthian House 17 Lansdowne Road Croydon CR0 2BX |
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Phone: +44 20 86048999 |
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Computer Facilities ENGINEERING SOFTWARE IMEG have utilised computers extensively as an aid to the design and optimisation of pipeline systems since 1967. Originally, programs were developed and run on a small in-house micro-somputer, various time-sharing/bureau systems and for the largest program (gas pipeline dynamic simulation), the Atlas computer at Manchester University, which was the largest available computer at the time. During the 1980’s with the development of desktop PC computers, IMEG transferred a number of the programs compiled by Basic, so that they are readily available to the engineers who are involved in making technical decisions. Further programs are developed to meet particular requirements or problems on specific projects. The following lists the programs developed by IMEG which are currently used. Gas Programs 2PHBB Two phase pipeline calculation of outlet pressure and liquid hold up AGA3 Orifice determination in accordance with AGA3 AGT Above ground pipeline outlet pressure and temperature API Calculates height of flare and radiation levels for a flare in accordance with API 521 BLW Time to blowdown a piping system to any pre-determined pressure BOIL Bubble point determination from gas analysis CENB Prediction of compressor efficiency, temperature for an isentropic process using the BWR equation of state CENP Polytropic calculation for centrifugal compressor power requirements CENT Adiabatic calculations for centrifugal compressor power requirements CHR Determines gas composition form available characteristics COMP Calculates gas characteristics from known composition and provides interface to spreadsheets COMPREC Determines compressor recycle flow COOLER1 Air-cooled heat exchanger sizing CS1 Optimisation of compressor station location CS2 Outlet pressure and temperature for fixed compressor station locations CV Control valve sizing — Fisher ENTB Prediction of temperature for an isenthalpic process using the BWR equation of state FLASH Flash at fixed pressure and temperature GT Pipeline outlet pressure and temperature at a given flow GASENTH Calculation of outlet temperature as a result of change in pressure on the basis of constant enthalpy H2O Water dewpoint HC Hydrocarbon dewpoint for a known pressure and gas composition HYD Hydrate temperature for a known pressure and composition ISA Control valve capacity — ISA 75 ISO Orifice meter sizing to ISO 5167 PL Pipeline pressure loss and flow at a known temperature PL2 Dtermines pipeline diameter, flow, inlet or outlet pressure, double precision PLC Pipeline gas flow — compares carious formulae PSV Relief valve sizing PT1 Simulation program for the gas compressor transient pressure PT3 Simulates compressor trip with branched downstream line PT5 Simulates compressor trip with branched packed downstream line PT6 Simulates compressor trip leaving one or more running QP1 Calculates flow in a number of parallel pipelines QP2 Calculates flow in a number of parallel pipelines with series subsections RVT1 Dynamic simulator of a compressor and surge recycle valve SETL Setting balance pressure of a number of volumes at different pressures and temperatures TSETTLE Transient version for settling pressure of a number of gas volumes ZCAL Compressibility calculation using AGA3 NX-19, AGA8, GPSA, Chao-Seader and BWR Liquid Programs ISAL Control valve capacity for liquids — ISA 75 LIQ Liquid pressure drop, flow, diameter or viscosity determination (from other variables) OILPHP Optimization of pump station spacing and power requirements, with route profile data OILT Calculates pressure drop and temperature in a liquid pipeline PTAP Pressure transient simulator (surge pressure) for liquid pipelines / networks VISC Viscosity prediction for Newtonian liquids WELL Wellhead flowing pressure and temperature Other Programs CP Cathodic protection attenuation of potentials, protective currents and groundbed resistance TEL Telecommunication radio path loss, Fresnel Zone clearance and earth bulging WT Pipeline weight coating requirements _______________________________________________________________________________________________ |
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PROPRIETARY SOFTWARE PACKAGES In addition to the usual databases, spreadsheet, planning and graphics packages, we utilise AutoCAD, Microstation and CAESAR II. IMEG makes comprehensive use of CAD, based on AutoCAD software, to design and produce engineering drawings and associated data for all technologies and applications. The system is fully supported by A1 size plotting facilities. Additional facilities include scanning and high definition colour printing . Each work station is connected into the Engineering Department network. The analysis and design of piping systems subjected to operational and environmental loads is an integral part of our engineering services. IMEG has installed CAESAR II for this purpose. CAESAR II is a powerful and interactive PC based pipe stressing package specifically developed for the oil and gas industry and its design codes. Recent projects have involved the utilisation of the following commercial software:- HYSYS Steady state and dynamic process simulator PIPESIM Pipeline 2 phase simulator Pipeline Studio Dynamic pipeline network simulation _______________________________________________________________________________________________ |
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PROJECT MANAGEMENT IMEG has developed a number of project document and material control programs using database software. IMEG currently utilises Microsoft Project for project planning purposes. Previous projects auch as Ecravos to Lagos Gas Pipeline Project and Cano Limon to Rio Zulia Oil Pipeline Porject were managed by Artemis. _______________________________________________________________________________________________ NETWORK IMEG Engineering Department untilises a Windows NT network to link individual workstations, which run the Microsoft Office suite of programs including word processing, spreadsheet and database. Additionally IMEG have developed specialist in-house programs which are now on the network. _______________________________________________________________________________________________ |
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