Spraberry Formation
E879040
The Spraberry Formation is a major oil-bearing geologic unit in West Texas, renowned as one of the most prolific tight oil reservoirs within the Permian Basin.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Spraberry Formation canonical | 2 |
| Spraberry-Dean interval | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10685723 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Spraberry Formation Context triple: [Permian Basin, primaryFormations, Spraberry Formation]
-
A.
Dakota Formation
The Dakota Formation is a widespread Cretaceous sedimentary rock unit in North America, noted for its sandstone deposits that record the advance of the Western Interior Seaway and preserve abundant plant and dinosaur fossils.
-
B.
Sundance Formation
The Sundance Formation is a Middle to Late Jurassic marine sedimentary rock unit in the western United States, known for its shallow sea deposits that underlie the dinosaur-rich Morrison Formation.
-
C.
Cloverly Formation
The Cloverly Formation is an Early Cretaceous geologic formation in the western United States known for its dinosaur fossils and fluvial sedimentary deposits.
-
D.
Claron Formation
The Claron Formation is a geologic rock unit of colorful limestones and mudstones best known for forming the striking hoodoos and cliffs of Bryce Canyon and other parts of the Paunsaugunt Plateau in southern Utah.
-
E.
Diablo Formation
The Diablo Formation is a geologic rock unit in California known as a significant petroleum-bearing reservoir within fields such as the Belridge Oil Field.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Spraberry Formation Target entity description: The Spraberry Formation is a major oil-bearing geologic unit in West Texas, renowned as one of the most prolific tight oil reservoirs within the Permian Basin.
-
A.
Dakota Formation
The Dakota Formation is a widespread Cretaceous sedimentary rock unit in North America, noted for its sandstone deposits that record the advance of the Western Interior Seaway and preserve abundant plant and dinosaur fossils.
-
B.
Sundance Formation
The Sundance Formation is a Middle to Late Jurassic marine sedimentary rock unit in the western United States, known for its shallow sea deposits that underlie the dinosaur-rich Morrison Formation.
-
C.
Cloverly Formation
The Cloverly Formation is an Early Cretaceous geologic formation in the western United States known for its dinosaur fossils and fluvial sedimentary deposits.
-
D.
Claron Formation
The Claron Formation is a geologic rock unit of colorful limestones and mudstones best known for forming the striking hoodoos and cliffs of Bryce Canyon and other parts of the Paunsaugunt Plateau in southern Utah.
-
E.
Diablo Formation
The Diablo Formation is a geologic rock unit in California known as a significant petroleum-bearing reservoir within fields such as the Belridge Oil Field.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
geologic formation
ⓘ
oil-bearing formation ⓘ stratigraphic unit ⓘ tight oil reservoir ⓘ |
| containsResource |
crude oil
ⓘ
natural gas ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| developedBy | multiple oil companies ⓘ |
| developedWith |
horizontal wells
ⓘ
hydraulic fracturing ⓘ secondary recovery ⓘ tertiary recovery ⓘ waterflooding ⓘ |
| discoveredAsOilField | 20th century ⓘ |
| economicImportance |
major hydrocarbon resource
ⓘ
significant contributor to Texas oil output ⓘ |
| geologicAge | Permian ⓘ |
| geologicPeriod |
Permian period
ⓘ
linked to:
Permian Period
|
| hasProperty |
laterally extensive
ⓘ
low permeability ⓘ low porosity ⓘ stacked pay zones ⓘ |
| hasStratigraphicPosition | lower Permian section of Midland Basin ⓘ |
| hydrocarbonType |
associated gas
ⓘ
oil ⓘ |
| knownFor |
extensive horizontal drilling
ⓘ
high cumulative oil production ⓘ low permeability reservoir rocks ⓘ multistage hydraulic fracturing ⓘ |
| lithology |
carbonate
ⓘ
sandstone ⓘ shale ⓘ siltstone ⓘ |
| locatedIn |
Permian Basin
ⓘ
Texas ⓘ United States ⓘ
linked to:
United States of America
West Texas ⓘ |
| overlies | Dean Formation ⓘ |
| partOf |
Midland Basin
ⓘ
Spraberry Trend ⓘ |
| playsRoleIn |
Permian Basin oil production
ⓘ
U.S. tight oil production ⓘ |
| region |
Midland sub-basin
ⓘ
linked to:
Midland Basin
|
| reservoirType |
tight oil reservoir
ⓘ
unconventional reservoir ⓘ |
| subunitOf |
Spraberry-Dean interval
ⓘ
linked to:
Spraberry Formation
|
| underlies |
Wolfcamp Formation
ⓘ
Wolfcamp Shale ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Spraberry Formation Description of subject: The Spraberry Formation is a major oil-bearing geologic unit in West Texas, renowned as one of the most prolific tight oil reservoirs within the Permian Basin.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Spraberry Formation