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#Pipeline hydraulic pipesim software#
The feed-gas composition simulations in Table 1 used Aspen HYSYS software to choose the best composition for design of the CPF based on total condensate production of 10,000 bo/d and total export gas of 2.7 mscmd.įour steady state simulation cases were developed for the selected feed compositions: a winter case and a summer case, plus a lean and rich composition for each. 5 does the same for the main export condensate trunkline. 4 shows the elevation profile for the export gas pipeline from CPF to the main export trunkline. 3 illustrates simulation of the process plant.įig. Processing simulation generated export gas and condensate compositions using Aspen HYSYS Version 11 software at different feed-gas compositions. Hydrocarbon dew point at 35 barg = 10° C.Įxport condensate requires removal of water and light hydrocarbons to meet bs&w (
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Table 1 shows design flowrates for the gas wells and export gas and condensate in the gas plant.įollowing are the gas and condensate specifications for export. The gas project is designed for production of 2.7 mscmd gas and 10,000 bo/d export condensate. A range of compositions of different condensate-gas ratios (CGR) can be delivered by each well depending on the layer being produced. Wellhead pressure of 267 bara, wellhead temperature of 50° C., and flowline pressure of 56 bar at the design flowrate of 0.425 million scm/day (mscmd, 15 MMscfd) are used. 2 shows the wells and the length for each wellhead flowline. The gas project will initially include eight wells. Well samples contained no elemental sulfur, no wax, and no paraffin. Mercury measured up to 70 nanograms/standard cu m (ng/scm) in some well samples. The condensate will be exported via separate export pipeline to the oil terminal. The gas will be treated in a dedicated LPG extraction plant to commercial specification required for end-user consumption. The condensate separated from the gas is stabilized to meet rvp specification for export condensate.
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The CPF includes units for liquid separation, mercury removal, CO 2 removal, dehydration, and a hydrocarbon dew-pointing unit to meet export gas specifications. The gas project consists of eight wells, a gathering system, and the CPF, where the production stream from the various fields will be separated into condensate and dew-pointed gas products. 1 shows the major units which make up the project’s central processing facility (CPF). OD size is recommended, however, as it offers more flexibility in the event production increases.įig. line size meets design criteria for the export condensate pipeline. OD line size is recommended for the export gas pipeline. Aspen HYSYS Version 11 software was used to simulate the gas and condensate processing infrastructure in the gas project to generate the export gas and condensate compositions under different conditions.Ī 24-in. Different gas and condensate compositions were used in the study. The study underlying this article determined suitable line sizes for natural gas and export condensate pipelines in an onshore gas field development project in Algeria based on normal production and turndown conditions using steady state simulations (PIPESIM), including analysis of liquids handling issues, velocity limits for effective corrosion inhibition, and erosional velocity limits. Comprehensive multi-process modeling of a natural gas-condensate development-including characteristics of the produced hydrocarbons, flowlines, and processing-allows determination of export pipeline requirements.