ROCK CHARACTERIZATION AND STRATIGRAPHY OF THE MISSISSIPPIAN STRATA, MERAMEC / SYCAMORE. MERGE PLAY, CENTRAL OKLAHOMA
Notice bibliographique
Résumé
Historically, Mississippian rocks (Meramec / Sycamore Fms.) have been a productive oil and gas formations in Oklahoma. This study followed upon two major plays that were recently identified, The Sooner Trend Anadarko Canadian Kingfisher (STACK) play and the South-Central Oklahoma Oil Province (SCOOP) play. Few studies have been published about these plays, and even less is known about the Merge play, that as the name suggests is connection between the STACK and SCOOP plays. This study identified the factors that control the stratigraphy and reservoir quality of Meramec/Sycamore and Woodford strata to build a predictive sequence stratigraphic model. \nDescription of two cores, thin sections, scanning electron microscopy (SEM), and X-Ray fluorescence spectroscopy (XRF) were used for the identification, analysis, and interpretation of litho- and chemofacies. Differences in geologic factors like conditions of deposition, sediment source, and burial diagenesis resulted in two major facies associations: gravity flows, and hemipelagic sediments. Gravity flows are mainly massive (unstructured) calcite-cemented siltstones and hemipelagic facies are mainly laminated and bioturbated facies. \nPorosity/permeability, hardness, TOC and rock-eval data were used to evaluate the range of reservoir quality and production potential of the two rock types. There are two main types of calcite in the facies, allochems and blocky calcite cement. In the gravity flow facies, blocky calcite cement precipitated during diagenesis and consequently occludes the original porosity but in the hemipelagic facies, calcite has not been precipitated thus it does not occlude the porosity. The amount of carbonate allochems controls the hardness of the rock in the hemipelagic facies, with more allochems resulting in harder rock. \nBulk-rock carbon and oxygen isotopic composition (δ13C and δ18O) were used to interpret the origin of the blocky calcite cement and to build a relative time framework. The data suggest a marine bioclastic source of the carbonate from surrounding beds as the origin of the blocky calcite cement. Changes in the composition of the rock, in this case isotopic (δ^13 C) and elemental composition, were used to build a relative time framework and strengthen the sequence stratigraphic model. Based on this, it seems that the Mississippian/Pennsylvanian unconformity eroded the uppermost section of Mississippian strata in the Merge play. \nWhile unconventional resources contain specific sweet spots and target zones, this integrated study demonstrates that geologic factors are still the path to quantifying and characterizing the rock potential. \nAn integrated study like this one depends on conditions of deposition, sediment source, and diagenesis -including distribution of the facies in the Merge play- and provided a chronostratigraphic framework, and a robust sequence stratigraphic model which provides a tool to interpret and predict genetically related depositional units in the available space. From this, sweet spots and anomalous zones could be detected.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».