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- W2019740430 abstract "Abstract Significant improvements in the capacity and performance of existing oil dehydrators and desalters are expected from an improved, patent pending, transformer and controller system. This electrostatic system is now ready for a field trial in South America. Production at the selected facility is currently at 45,000 bopd per unit on a medium gravity crude oil. This oil is currently being processed by five 10-ft. diameter × 45 ft. long electrostatic dehydrators using combined AC/DC electrostatic technology. Pilot studies utilizing the improved transformer / controller have demonstrated capacity improvements exceeding 30% above existing technology or outlet BS&W reductions between 10 to 30%. To confirm these results and define the limits of this new technology, a series of scheduled field trials has been planned. In addition, several other vessel modifications will include upgrading the inlet spreader design, and installing new high voltage electrodes. Once these improvements are made and the new compact electrostatic technology is implemented, it is estimated the vessel capacity will increase significantly, while maintaining the required oil specification. If successful, this electrostatic transformer and controller may provide producers and refiners with a new technology to process highly conductive, viscous oils. Testing Objective Utilizing a South American oil facility, a new electrostatic dehydration technology is scheduled to be field tested. The objective of these tests is to quantify improvements to the oil dehydration process, demonstrate the robustness of the equipment and establish confirmation of the laboratory test results. Facility The production facility shown in Figure 1 has five oil dehydration vessels operating in parallel. Each horizontal dehydrator is 10 ft OD × 45 feet long × 125 psig with Dual Polarity® electrostatic technology, open bottom spreaders, either steel or composite high voltage electrodes and pipe collectors. The Dual Polarity transformers are 480 volt, single phase rated for 150 kVA. Following an upgrade of three vessels to improve performance, a fourth vessel is scheduled to be retrofitted with a new electrostatic transformer including step/start switchgear and PC-based process controller. The facility has the capability to increase the oil flow to the test vessel so the limits of the technology can be investigated. Application The facility is currently processing a 27.1 API oil at flow rates varying between 45,000 bopd to 60,000 bopd per vessel. The operating temperature is maintained at 140 F and the operating pressure is 80 psig. At operating temperature the dry oil viscosity is 8.9 cp. The inlet water cut typically ranges between 20 to 30%. The outlet specification is less than 1% BS&W and is routinely met by the dehydration process." @default.
- W2019740430 created "2016-06-24" @default.
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- W2019740430 date "2003-05-05" @default.
- W2019740430 modified "2023-09-25" @default.
- W2019740430 title "Field Trials Scheduled for New Compact Dehydration Technology" @default.
- W2019740430 doi "https://doi.org/10.4043/15353-ms" @default.
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