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Record W2075874091 · doi:10.2118/154287-ms

Three-Phase Flow during Steam Chamber Rise

2012· article· en· W2075874091 on OpenAlex
Muhammad Murtaza, Hassan Dehghanpour

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueSPE Improved Oil Recovery Symposium · 2012
Typearticle
Languageen
FieldEngineering
TopicEnhanced Oil Recovery Techniques
Canadian institutionsUniversity of Alberta
Fundersnot available
KeywordsSteam injectionSteam-assisted gravity drainageMechanicsVolumetric flow rateFlow (mathematics)Steam drumTwo-phase flowPetroleum engineeringCoupling (piping)Displacement (psychology)Materials scienceEnvironmental scienceSuperheated steamThermodynamicsEngineeringBoiler (water heating)PhysicsMetallurgy

Abstract

fetched live from OpenAlex

Abstract During Steam Assisted Gravity Drainage (SAGD) process, a steam chamber is formed due to continous steam injection. This steam chamber first moves upward to the top of the reservoir and then spreads side ways. The upward displacement of the steam chamber is the key parameter, for determining the optimum rate of steam injection. Slow injection rate will give low oil recovery where as high injection rate will cause steam loss. Furthermore, the cost of steam is more than half of the total cost of the project. Therefore it is necessary to determine the accurate rate of steam chamber rise to make the process economic. Recent experiments show that oil flow is coupled to water flow during three-phase gravity drainage in water-wet system. In this paper, we argue that this type of flow coupling can be significant during SAGD. We extend Butler (1987) analytic model for the rise of interfering steam chambers to account for three phase flow and flow coupling. We also show the significance of flow coupling by solving a simple numerical example. We observe that by including three-phase drainage and the coupling flow in the steam chamber, the vertical rise velocity of steam chamber increases. Moreover the steam chamber rise velocity is sensitive to viscosity-temperature characterstics (m) of oil. As the value of m decreases the rise velocity increases. Furthermore, we compre the model predictions with measured values from five fields, and one experiment.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.160
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.002
Open science0.0000.000
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0000.001

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.

Opus teacher head0.007
GPT teacher head0.229
Teacher spread0.222 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it