Twister Supersonic Gas Conditioning Process
Bibliographic record
Abstract
Twister Supersonic Gas Conditioning Process Fred T. Okimoto; Fred T. Okimoto Twister B.V. Search for other works by this author on: This Site Google Scholar Salim Sibani; Salim Sibani Twister B.V. Search for other works by this author on: This Site Google Scholar Michael Lander Michael Lander Twister B.V. Search for other works by this author on: This Site Google Scholar Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, United Arab Emirates, October 2000. Paper Number: SPE-87262-MS https://doi.org/10.2118/87262-MS Published: October 13 2000 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Okimoto, Fred T., Sibani, Salim, and Michael Lander. "Twister Supersonic Gas Conditioning Process." Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, United Arab Emirates, October 2000. doi: https://doi.org/10.2118/87262-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)Abu Dhabi International Petroleum Exhibition and Conference Search Advanced Search AbstractTwister Supersonic Separator is an innovative and revolutionary gas processing system. The Twister technology was developed by Shell. Twister B.V. was launched as a separate company in April 2000 by Shell Technology Investments Partnership, a 50/50 venture between Shell and the Beacon Group. Twister Supersonic Separator is the resulting synergy from combining aero-dynamics with the traditional gas processing concepts of thermodynamics and fluid dynamics. Twister is based on the following concepts (Figure 1):Gas is expanded in a Laval nozzle to supersonic velocities with resulting lower temperatures.Nucleation of water and hydrocarbon occur, followed by growth of liquid droplets.The gas and liquid droplets enter the wing section, where a very high swirl is created and the liquid droplets are centrifuged onto the walls, creating a liquid film.The gas and liquids are separated in the drainage section.Pressure is recovered in the diffuser section, to about 70– 80% of the initial pressure.This is done without chemicals or rotating equipment, and requiring minimum space and weight, thus saving significant capital and operating costs.Figure 2 shows the phase envelope of a natural gas and the water concentration curve. Twister is compared with the Joule-Thompson Valve and the Turbo- Expander. In this example all three processes have the same outlet pressure (sales pressure), which is typical for most applications. Joule-Thompson is an adiabatic process and the least efficient. Turbo-expander is near 85% isentropic efficiency, so it goes deeper into the phase envelope and uses its re-compressor to reach the outlet pressure. However, Twister has about 90% isentropic efficiency, so it goes the deepest into the phase envelope, then recompresses without rotating equipment to the outlet pressure. Twister is effectively a turboexpander/ separator/re-compressor all in one static piece of equipment.Thus, from a theoretical point of view, Twister has the most favorable thermodynamics. The challenge is to translate this theoretical advantage into the operations of actual gas plants. Keywords: liquid droplet, application, isentropic efficiency, upstream oil & gas, okimoto, spe 87262, twister supersonic gas conditioning process, phase envelope, salim sibani, separation turbo exp Subjects: Processing Systems and Design, Gas processing This content is only available via PDF. 2000. Society of Petroleum Engineers You can access this article if you purchase or spend a download.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.017 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".