Midway-Sunset Oil Field
E152145
Midway-Sunset Oil Field is one of California’s largest and oldest producing oil fields, located in the southern San Joaquin Valley.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Midway-Sunset Oil Field canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T1310661 — 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: Midway-Sunset Oil Field Context triple: [Kern County, containsOilField, Midway-Sunset Oil Field]
-
A.
Elk Hills oil field
The Elk Hills oil field is a major petroleum reserve in California that gained historical notoriety for its central role in the Teapot Dome scandal, one of the most infamous corruption cases in U.S. political history.
-
B.
Kern River Oil Field
Kern River Oil Field is one of California’s largest and oldest producing oil fields, located near Bakersfield in Kern County.
-
C.
Teapot Dome oil field
The Teapot Dome oil field is a federally owned petroleum reserve in Wyoming that became infamous as the center of a major 1920s U.S. political corruption scandal.
-
D.
Oildale
Oildale is an unincorporated community in California’s southern San Joaquin Valley, located just north of Bakersfield and historically associated with the region’s oil industry.
-
E.
Montrose Basin
Montrose Basin is a large tidal estuary and wildlife reserve on Scotland’s east coast, renowned for its rich birdlife and coastal habitats.
- 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: Midway-Sunset Oil Field Target entity description: Midway-Sunset Oil Field is one of California’s largest and oldest producing oil fields, located in the southern San Joaquin Valley.
-
A.
Elk Hills oil field
The Elk Hills oil field is a major petroleum reserve in California that gained historical notoriety for its central role in the Teapot Dome scandal, one of the most infamous corruption cases in U.S. political history.
-
B.
Kern River Oil Field
Kern River Oil Field is one of California’s largest and oldest producing oil fields, located near Bakersfield in Kern County.
-
C.
Teapot Dome oil field
The Teapot Dome oil field is a federally owned petroleum reserve in Wyoming that became infamous as the center of a major 1920s U.S. political corruption scandal.
-
D.
Oildale
Oildale is an unincorporated community in California’s southern San Joaquin Valley, located just north of Bakersfield and historically associated with the region’s oil industry.
-
E.
Montrose Basin
Montrose Basin is a large tidal estuary and wildlife reserve on Scotland’s east coast, renowned for its rich birdlife and coastal habitats.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
oil field
ⓘ
petroleum reservoir ⓘ |
| commodity | petroleum ⓘ |
| contains |
numerous production wells
ⓘ
steam injection wells ⓘ |
| continent | North America ⓘ |
| continuedProduction | 21st century ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| discovered | 1894 ⓘ |
| economicImportance | major contributor to regional economy of Kern County ⓘ |
| enhancedRecoveryTechnique |
cyclic steam stimulation
ⓘ
steam flooding ⓘ |
| eraOfDevelopment | early 20th century ⓘ |
| geologicalAge | Tertiary formations ⓘ |
| geologicalBasin |
San Joaquin Basin
ⓘ
linked to:
San Joaquin River Basin
|
| hasEnvironmentalConcern |
air quality impacts
ⓘ
groundwater contamination risk ⓘ land subsidence risk ⓘ |
| hasInfrastructure |
pipelines
ⓘ
steam generation facilities ⓘ tank farms ⓘ |
| locatedIn |
California
ⓘ
linked to:
California, United States
Kern County, California ⓘ
linked to:
Kern County
San Joaquin Valley ⓘ |
| locatedInTimeZone | Pacific Time Zone ⓘ |
| locatedNear |
Maricopa, California
ⓘ
Taft, California ⓘ |
| onshoreOrOffshore | onshore ⓘ |
| operatorType | multiple operators ⓘ |
| partOf |
California oil and gas industry
ⓘ
linked to:
California oil fields
|
| primaryHydrocarbon | heavy oil ⓘ |
| productionMethod |
primary recovery
ⓘ
secondary recovery ⓘ thermal enhanced oil recovery ⓘ |
| region |
southern San Joaquin Valley
ⓘ
linked to:
San Joaquin Valley
|
| regulatoryAuthority |
CalGEM
ⓘ
California Geologic Energy Management Division ⓘ
linked to:
Geologic Energy Management Division
|
| resourceType | crude oil ⓘ |
| sedimentaryBasinType | forearc basin ⓘ |
| significance |
one of the largest oil fields in California
ⓘ
one of the oldest producing oil fields in California ⓘ |
| startOfProduction | 1894 ⓘ |
| state |
California
ⓘ
linked to:
California, United States
|
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: Midway-Sunset Oil Field Description of subject: Midway-Sunset Oil Field is one of California’s largest and oldest producing oil fields, located in the southern San Joaquin Valley.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.