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Record W2331780160 · doi:10.2118/1206-0033-jpt

Lower Tertiary Trend: A Study in the Impact of Advancing Technology

2006· article· en· W2331780160 on OpenAlex
Diane Langley

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.

aboutThe title or abstract carries a Canadian signal from the geographic lexicon.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueJournal of Petroleum Technology · 2006
Typearticle
Languageen
FieldEngineering
TopicReservoir Engineering and Simulation Methods
Canadian institutionsnot available
Fundersnot available
KeywordsChevron (anatomy)GeologyDrillingTest (biology)Quarter (Canadian coin)ArchaeologyEngineeringPaleontologyGeography

Abstract

fetched live from OpenAlex

In 2002, few believed that Lower Tertiary sands would be present, let alone productive. Today these defiant sands are reshaping the industry's appraisal of plays in the Gulf of Mexico (GOM). Back in 2002, supermajor Chevron and independent Devon formed a joint venture to explore and exploit the deep Wilcox formation. According to both, new and emerging technology has been and continues to be the differentiator in both the exploration and exploitation efforts in these deep structural targets and has the potential to create a shock wave on financial portfolios. The Jack-2 well test took place in the second quarter of 2006 at Walker Ridge Block 758 in 7,000 ft of water, and more than 20,000 ft under the seafloor, breaking Chevron's 2004 Tahiti well-test record as the deepest successful well test in the GOM. Chevron, Devon, and Statoil announced that it was a record-setting production test, with the test representing approximately 40% of the total net pay measured in the Jack-2 well. National Geographic recently gave an apt description of industry achievement in the Lower Tertiary trend: "…you're looking at where in the GOM to drill an 80- to 100-million-dollar well that will ultimately be the size of a dinner plate [on the seafloor]." And, according to analysts, it equates to spending U.S. $100 million to drill and construct a well in mile-deep water to as deep as 5.3 miles below sea level beneath a salt canopy. The recent, well-publicized Jack-2 well test is actually the latest of several successes in the play. The Great White and Trident finds by Chevron, located in Alaminos Canyon, were the first, and it is speculated that this trend could extend into the Garden Banks and Green Canyon blocks. "This is truly frontier exploration … pushing boundaries," said Gero Farrugio, Wood Mackenzie Upstream Research Manager for Latin America, the U.S. GOM, and Canada. Other prospects already on record in the GOM Lower Tertiary trend include Cascade in 2002, St. Malo in 2003, the first Jack find in 2004, and Kaskida in 2006. The Jack prospect is located far from any existing platform and pipeline infrastructure. Farrugio points out that while "the Jack-2 test is the first indicator, it is far from proving commerciality of the play." The technology that is being brought to bear to realize the potential of the Lower Tertiary trend is the ingredient that has the potential to bring understanding of this play needed for the creation of infrastructure and ultimately to prove commercial viability. Drilling commenced on the Jack-2 well under 7,000 ft of water and continued to a depth of 28,175 ft. At this depth, pressures can reach 20,000 psi and the temperature of the oil is approximately 200°C.

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)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.485
Threshold uncertainty score0.411

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0020.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0000.000

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 head0.006
GPT teacher head0.279
Teacher spread0.273 · 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