Kern River Oil Field
E150199
Kern River Oil Field is one of California’s largest and oldest producing oil fields, located near Bakersfield in Kern County.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Kern River Oil Field canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T1310660 — 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: Kern River Oil Field Context triple: [Kern County, containsOilField, Kern River 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.
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.
-
C.
Coalinga
Coalinga is a small city in California’s San Joaquin Valley known historically for oil production and its proximity to the Diablo Range.
-
D.
The Geysers geothermal field
The Geysers geothermal field is a major geothermal energy production area in Northern California, known as one of the largest geothermal power complexes in the world.
-
E.
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.
- 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: Kern River Oil Field Target entity description: Kern River Oil Field is one of California’s largest and oldest producing oil fields, located near Bakersfield in Kern County.
-
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.
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.
-
C.
Coalinga
Coalinga is a small city in California’s San Joaquin Valley known historically for oil production and its proximity to the Diablo Range.
-
D.
The Geysers geothermal field
The Geysers geothermal field is a major geothermal energy production area in Northern California, known as one of the largest geothermal power complexes in the world.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
hydrocarbon field
ⓘ
oil field ⓘ |
| APIGravity | approximately 13 API ⓘ |
| containsFacility |
gathering pipelines
ⓘ
produced water treatment facilities ⓘ steam generation plants ⓘ tank farms ⓘ |
| contributesTo | California oil production ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| county | Kern County NERFINISHED ⓘ |
| discovered | 1899 ⓘ |
| discoveredBy | T. J. O’Donnell ⓘ |
| economicSector | petroleum industry ⓘ |
| formerOperator |
Chevron USA Inc.
ⓘ
linked to:
Chevron Corporation
Standard Oil of California ⓘ |
| geologicAge |
Pliocene
ⓘ
linked to:
Pliocene epoch
|
| geologicBasin |
San Joaquin Basin
ⓘ
linked to:
San Joaquin River Basin
|
| hasEnvironmentalConcern |
air emissions from steam generation
ⓘ
land disturbance ⓘ produced water management ⓘ |
| hasInfrastructure |
electrical distribution network
ⓘ
oil and gas pipelines ⓘ roads and service pads ⓘ |
| hasWellType |
injection wells
ⓘ
production wells ⓘ |
| isOneOf |
largest oil fields in California
ⓘ
oldest producing oil fields in California ⓘ |
| locatedIn | San Joaquin Valley ⓘ |
| locatedNear | Bakersfield ⓘ |
| mainProducingFormation | Kern River Formation ⓘ |
| nearRiver | Kern River ⓘ |
| notableFor |
long-term heavy oil production
ⓘ
use of steam injection ⓘ |
| onshoreOrOffshore | onshore ⓘ |
| operator | Chevron Corporation ⓘ |
| partOf |
Kern County oil-producing region
ⓘ
linked to:
San Joaquin Valley oil fields
|
| primaryHydrocarbon | crude oil ⓘ |
| productionMethod |
primary recovery
ⓘ
steam flooding ⓘ thermal enhanced oil recovery ⓘ |
| productionStart | 1899 ⓘ |
| region | southern Central Valley ⓘ |
| regulatoryJurisdiction |
California Geologic Energy Management Division
ⓘ
linked to:
Geologic Energy Management Division
Kern County authorities ⓘ
linked to:
Kern County
|
| resource | heavy oil ⓘ |
| resourceType | conventional oil ⓘ |
| 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: Kern River Oil Field Description of subject: Kern River Oil Field is one of California’s largest and oldest producing oil fields, located near Bakersfield in Kern County.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.