Coalinga Oil Field
E586292
Coalinga Oil Field is a major petroleum-producing area in California’s San Joaquin Valley, historically significant for its early 20th-century oil boom and extensive heavy oil reserves.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Coalinga Oil Field canonical | 1 |
| Kern County oil boom | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6345901 — 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: Coalinga Oil Field Context triple: [Coalinga, hasNearbyGeologicalFeature, Coalinga Oil Field]
-
A.
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.
-
B.
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.
-
C.
Belridge Oil Field
Belridge Oil Field is one of California’s largest and most productive oil fields, located in the San Joaquin Valley and known for its extensive heavy oil and enhanced recovery operations.
-
D.
Midway-Sunset Oil Field
Midway-Sunset Oil Field is one of California’s largest and oldest producing oil fields, located in the southern San Joaquin Valley.
-
E.
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.
- 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: Coalinga Oil Field Target entity description: Coalinga Oil Field is a major petroleum-producing area in California’s San Joaquin Valley, historically significant for its early 20th-century oil boom and extensive heavy oil reserves.
-
A.
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.
-
B.
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.
-
C.
Belridge Oil Field
Belridge Oil Field is one of California’s largest and most productive oil fields, located in the San Joaquin Valley and known for its extensive heavy oil and enhanced recovery operations.
-
D.
Midway-Sunset Oil Field
Midway-Sunset Oil Field is one of California’s largest and oldest producing oil fields, located in the southern San Joaquin Valley.
-
E.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf | oil field ⓘ |
| adjacentTo | Coalinga Anticline NERFINISHED ⓘ |
| basin | San Joaquin Basin NERFINISHED ⓘ |
| contains | multiple producing pools ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| currentProductionTrend | declining long-term production ⓘ |
| developmentStatus | mature oil field ⓘ |
| discovered | late 19th century ⓘ |
| economicImportance | historically significant to California oil industry ⓘ |
| enhancedRecoveryMethods |
cyclic steam stimulation
ⓘ
steam flooding ⓘ waterflooding ⓘ |
| environmentalIssues |
air emissions from heavy oil operations
ⓘ
land subsidence risk ⓘ |
| explorationMethod | surface geology mapping ⓘ |
| geologicAge | Tertiary ⓘ |
| geologicFormation |
Monterey Formation (regional petroleum source)
NERFINISHED
ⓘ
Temblor Formation NERFINISHED ⓘ |
| hasEconomicImpactOn | Coalinga, California NERFINISHED ⓘ |
| hasResource | bitumen-rich heavy crude ⓘ |
| hasWellType | onshore wells ⓘ |
| historicalSignificance | major early oil boom town development around Coalinga ⓘ |
| hydrocarbonPhase | liquid-dominated ⓘ |
| industrySector | upstream oil and gas ⓘ |
| infrastructure |
pipelines
ⓘ
production wells ⓘ steam injection facilities ⓘ |
| knownFor |
extensive heavy oil reserves
ⓘ
heavy oil production ⓘ |
| locatedIn |
California, United States
ⓘ
surface form:
California
Fresno County, California NERFINISHED ⓘ San Joaquin Valley NERFINISHED ⓘ western San Joaquin Valley margin ⓘ |
| near | City of Coalinga, California NERFINISHED ⓘ |
| oilAPIGravity | heavy ⓘ |
| operatedBy | multiple petroleum companies ⓘ |
| partOf |
California oil and gas fields
NERFINISHED
ⓘ
San Joaquin Valley oil province NERFINISHED ⓘ |
| peakProductionPeriod | early 1900s ⓘ |
| primaryRecoveryMethods | solution gas drive ⓘ |
| productionStart | circa 1890s ⓘ |
| regulatoryJurisdiction | California Department of Conservation, Geologic Energy Management Division (CalGEM) NERFINISHED ⓘ |
| resourceType |
natural gas (associated)
ⓘ
petroleum ⓘ |
| significantOilBoom | early 20th century ⓘ |
| structuralTrapType | anticlinal trap ⓘ |
| terrain | foothills and valley margin ⓘ |
| transportLinks | connected to regional pipeline network ⓘ |
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: Coalinga Oil Field Description of subject: Coalinga Oil Field is a major petroleum-producing area in California’s San Joaquin Valley, historically significant for its early 20th-century oil boom and extensive heavy oil reserves.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Kern County oil boom