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Record W2070577915 · doi:10.4043/11915-ms

Terra Nova - The Flow Assurance Challenge

2000· article· en· W2070577915 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.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueOffshore Technology Conference · 2000
Typearticle
Languageen
FieldEngineering
TopicOffshore Engineering and Technologies
Canadian institutionsPetro-Canada
Fundersnot available
KeywordsSubseaSubmarine pipelineFlow assuranceDrillDrillingPetroleumGeologyEngineeringOceanographyMining engineeringMechanical engineering

Abstract

fetched live from OpenAlex

Abstract The Terra Nova field is the second largest oil field discovered to date in the Jeanne d'Arc basin on the Grand Banks, with recoverable reserves of approximately 370 million barrels. The field, located in approximately 94 m of water 350 km East-Southeast of St John's, Newfoundland and 35 km Southeast of the Hibernia field, will be developed utilizing subsea flowlines from four drill centres tied back to an FPSO. This paper discusses the design approaches adopted to meet the principal flow assurance challenges for the subsea facilities. These are:Hydrate formation: the minimum seabed ambient temperature is -2 °C.Wax formation: the design is based on stabilised crude having a wax content of 9.0 %, a pour point of 12 °C and a wax appearance temperature of 46 °C. The wax dissolution temperature is 70 °C.The implications of turret disconnection: the buoy along with all the risers can be released to allow the FPSO to move off-station to avoid icebergs. The owners of the Terra Nova field are Petro-Canada (29 %), Mobil Oil Canada Properties (22 %), Husky Oil Operations Ltd. (17.5 %), Norsk Hydro Canada Oil and Gas (15 %), Murphy Oil Company Ltd. (12 %), Mosbacher Operating Ltd. (3.5 %) and Chevron Canada Resources (1 %). The operator of the field is Petro-Canada, and the FPSO vessel constructor is Daewoo of Okpo, South Korea. The participants in the Terra Nova Project Alliance include Petro-Canada (and seconded owner personnel), Coflexip Stena Offshore Newfoundland Ltd., Shawmont Brown and Root, Halliburton Energy Services, FMC Offshore Canada Inc, PCL Industrial Constructors Inc. and Doris Conpro Ltd. First oil from Terra Nova is targeted for January 2001. Introduction The Terra Nova development is based on a subsea tieback with flexible fowlines/risers to a Floating Production, Storage and Offloading (FPSO) vessel, with crude oil transported to market by shuttle tankers. The FPSO has a storage capacity of 970,000 barrels of oil and supports topsides process and utility equipment with a gross operating weight of 12,200 tonnes. The topsides facilities are designed for a maximum overall oil production rate of 23,880 Sm3/d (150,000 bbl/d), produced water rate of 21,000 Sm3/d (132,000 bbl/d), water injection rate of 28,600 Sm3/d (180,000 bbl/d) and gas injection rate of 7.36 MSm3/d (260 mmscfd). Following separation to meet the specifications for TVP of 75.8 kPa at 50 °C and BS&W of <0.5 % by volume, crude is transferred to the storage tanks located in the vessel hull where it is maintained above the wax appearance temperature at all times. The overall field schematic (base case development) is shown in Figure 1 and a simplified topsides process flow diagram is shown in Figure 2. The base case subsea development scenario incorporates 14 production wells and 10 water/gas injection wells. Gas lift facilities are provided on 12 of the 14 production wells.

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: Other design · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.976
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
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0010.000

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 head0.014
GPT teacher head0.207
Teacher spread0.192 · 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