Snap well-performance application is a full-featured nodal analysis package. In many cases, Snap is simpler to use than some commercial programs because it was built by end users for their own uses. Snap is written in Microsoft Foundation Class VC++. Snap has the most complete and rigorous gas-lift-design, troubleshooting and analysis features available in commonly used nodal packages. The application is now the standard gas-lift package for engineers working in Prudhoe Bay, Kuparuk oil fields and around the world. Access to clients’ raw data in Oracle and other databases eliminates tedious data entry. Snap has evolved through 35 years of intensive testing and design.

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ProCast is the first gas network and deliverability modeling system available in a Windows interface in 1993. ProCast is used to design and optimize gas production and storage fields. ProCast pulls in performance data or creates it from reservoir and gathering system layouts. It then steps forward (and even backward) in time to show how well, for example, a new compressor meets deliverability needs, whether in five years or the next day. Designer Scott Wilson said that managing a complex gas field without ProCast is like driving a car with the windshield painted over – a driver may make it to the end of the road, but it will be an expensive, rough ride. He adds that ProCast has been a lifesaver to many engineers who had “hit the wall” trying to predict complex gas-field performance with other tools.

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Forecast is the only decline-curve program that integrates multiple trends to determine a constrained forecast. Most decline-curve packages take the approach of plotting one phase and drawing a line through the data while ignoring all underlying reservoir, well, event and facility inputs that may have caused the particular behavior. Some packages model a well while only showing a single phase and then users are “surprised” when a sudden decrease in oil rate flattens out because of an increase in water-handling capacity. Forecast accounts for water production trends, WOR vs. cum as well as GOR trends while forecasting oil rates. The ability to take two independent trends, mathematically couple them through iterative procedures and arrive at a meaningful oil forecast is a key feature of Forecast. Engineers use it to schedule gas-cycling wells at Prudhoe Bay and waterflood reserves worldwide.

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PTA is a pressure transient analysis and design system crafted through tens of person years of engineering and programming talent. The application is intuitive yet offers a full-featured pressure transient program. The graphical data-manipulation features simplified straight-line models as well as the most complex multivariable regression solutions. From the beginning engineer to the full-time tester, PTA performs at the highest levels.

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Tank is a powerful analytical tool for quickly reviewing and predicting the performance of oil and gas reservoirs. Tank incorporates an innovative data tree approach for data entry: results are continuously updated as new information is provided to the program. OOIP and OGIP estimates from several methods are compared to understand any variances in the data. Integrated statistical analysis provides distributions of potential values that then can be incorporated into the new portfolio analysis techniques. Tank couples material-balance concepts with a variety of analytical aquifer models, enabling it to handle a wide range of hydrocarbon fluid types and reservoir drive mechanisms. Given a reservoir’s production and pressure history, a company uses Tank to estimate original hydrocarbons in place, aquifer size and strength and ultimately to predict future reservoir rates and pressures

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