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Oil spills / Analytics
NOSDRA source analysis

Oil spill patterns, compared clearly.

Explore reported incidents by company, cause, month and state. Every total is calculated from the selected year's source rows.

Incident explorer
NOSDRA Oil Spill Monitor · calculated from incident rowsLatest observation: 23 Aug 2026Retrieved: 3 Sept 2026
Change every table and chart together
Reported spills512incident rows
Estimated quantity18,279.48bbl, supplied values only
Quantity supplied354of 512 records
JIV date supplied48923 records without a date
Company comparison

Reporting completeness and spill totals, 2025

Click a column heading to reorder the table. Company names remain exactly as supplied, so historical operators are not silently merged.

OANDO1671,098.14 bbl123 of 167 rows supplied quantity0% (0)26% (44)
RENAISSANCE1069,476.71 bbl62 of 106 rows supplied quantity0% (0)42% (44)
SPDC41696.33 bbl15 of 41 rows supplied quantity0% (0)63% (26)
NEPL31498.9 bbl26 of 31 rows supplied quantity0% (0)16% (5)
SEPLAT291,262.94 bbl14 of 29 rows supplied quantity0% (0)52% (15)
Heritage281,263.32 bbl24 of 28 rows supplied quantity0% (0)14% (4)
Heirs Energies Limited26122.22 bbl21 of 26 rows supplied quantity0% (0)19% (5)
MPN2495.92 bbl23 of 24 rows supplied quantity96% (23)4% (1)
NNPC NEOL111,289.02 bbl10 of 11 rows supplied quantity0% (0)9% (1)
NEOL10118.84 bbl9 of 10 rows supplied quantity0% (0)10% (1)
CHEVRON70.1 bbl6 of 7 rows supplied quantity0% (0)14% (1)
NAOC56 bbl3 of 5 rows supplied quantity0% (0)40% (2)
Belema E&P44.23 bbl2 of 4 rows supplied quantity0% (0)50% (2)
Aiteo E&P3155 bbl3 of 3 rows supplied quantity0% (0)0% (0)
NDWEST3246.5 bbl3 of 3 rows supplied quantity0% (0)0% (0)
SEEPCO326 bbl2 of 3 rows supplied quantity0% (0)33% (1)
Platform25.01 bbl2 of 2 rows supplied quantity0% (0)0% (0)
POOCN20 bbl0 of 2 rows supplied quantity0% (0)100% (2)
TOTAL214.19 bbl2 of 2 rows supplied quantity0% (0)0% (0)
Company not supplied10 bbl0 of 1 rows supplied quantity0% (0)100% (1)
FOL10 bbl0 of 1 rows supplied quantity0% (0)100% (1)
HEIRS10 bbl0 of 1 rows supplied quantity0% (0)100% (1)
NEWCROSS EPL10 bbl0 of 1 rows supplied quantity0% (0)100% (1)
NNPC/BELEMA115 bbl1 of 1 rows supplied quantity0% (0)0% (0)
OANDO ENERGY RESOURCES NIGERIA LIMITED15 bbl1 of 1 rows supplied quantity0% (0)0% (0)
PPMC10.93 bbl1 of 1 rows supplied quantity0% (0)0% (0)
SHARON PETROLEUM NIGERIA LIMITED11,879.2 bbl1 of 1 rows supplied quantity0% (0)0% (0)

Reading this table: “No JIV date” means the date field is blank in the source row. “No quantity” means no estimated quantity was supplied. Neither is a legal finding or a company compliance score.

Patterns over time and place

Four views of the same 2025 records

Counts and estimated quantities are kept separate so a missing quantity never erases a reported incident.

Number of reported spills by cause

Monthly incident rows grouped from the source cause codes.

Estimated quantity by reported cause

Monthly sum in barrels only where the source supplies an estimated quantity.

States with the most reported spills

Top ten state labels in the selected year; offshore records retain the source state field.

Quantity reporting completeness

A missing quantity means not supplied—not zero barrels.

Cause grouping used here: “Sabotage / theft” is source code sab. “Operational issues” combines equipment failure, corrosion and operational/maintenance error codes. Every other or blank cause remains “Other / unspecified.”