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Record W1998457363 · doi:10.2118/148680-ms

Why Not to Base Economic Evaluations on Initial Production Alone

2011· article· en· W1998457363 on OpenAlex

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

VenueCanadian Unconventional Resources Conference · 2011
Typearticle
Languageen
FieldEngineering
TopicReservoir Engineering and Simulation Methods
Canadian institutionsUniversity of Calgary
Fundersnot available
KeywordsProduction (economics)Investment (military)Computer scienceVariable (mathematics)SizingKey (lock)Return on investmentEconomic indicatorEconometricsEconomicsMathematicsMicroeconomicsComputer security

Abstract

fetched live from OpenAlex

Abstract If one is repeatedly conducting the exact same completion in the same lithology of the same reservoir, then initial production (IP) rates might be a good indicator of relative long-term well performance or estimated ultimate recovery (EUR). This technique is tempting to use because it is quick and simple, and allows for easy comparison. However, use of this method alone assumes the shape of production decline curves will remain consistent from one well to the next. This method can especially be fallible when different numbers of fractures are placed along a lateral with possibly variable length. In this case, the relation between IP and EUR becomes much less defined. Basing key economic decisions on IP alone can be misleading. This paper examines situations in which IP is not only a poor indicator of ultimate well performance, but in fact shows a reverse correlation. Sizing and spacing of fracturing treatments along a horizontal wellbore as well as vertical placement of the lateral in the zone can all be key variables. In many cases, one can choose high IP or optimized economic return, but not always both. Assuming that high IP equates to greater economic return can be a critical error. It is therefore essential to those involved in well-completion design as well as financial analysts to understand the variables involved as well as their impact. A lack of understanding could lead to poor completion and/or stimulation decisions that could severely impact the return on investment (ROI).

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 categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.348
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

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.

Opus teacher head0.083
GPT teacher head0.303
Teacher spread0.220 · 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