Nigerian crude grade · Light sweet

Qua Iboe crude oil

Company-published assay, 19 January 2024 Qua Iboe Terminal (QIT)
API gravity
37.3°1
Sulphur
0.12 wt%
Acidity (TAN)
0.27 mg KOH/g
Pour point
+9 °C
Barrels per tonne
7.51 derived2
Standard cargo
950,000 bbl3

Evidence basis: Company-reported Company-published assay, dated 19 January 2024. Crude quality varies from cargo to cargo; in any transaction the certificate of quality for the specific lifting governs, not a published assay.

Qua Iboe: quality and origin

Qua Iboe is a light sweet crude produced from shallow-water fields offshore Akwa Ibom State and loaded at the Qua Iboe Terminal (QIT). It has one of the most recent public assays of any Nigerian grade: ExxonMobil's January 2024 analysis gives 37.3° API, 0.12% sulphur, a total acid number of 0.27 mg KOH/g and a pour point of +9 °C.1

The assay shows a high middle-distillate yield, with 370 °C+ residue at about 26% by volume and only 4.7% boiling above 550 °C.1 The positive pour point is worth noting: in our reading it indicates a waxier crude than Bonny Light, which matters for cold-climate storage and pipeline handling and should be checked against the certificate of quality for a specific cargo.

Change of operator

Many websites and port directories still name ExxonMobil or Mobil as the operator. That is out of date: Seplat Energy completed its acquisition of Mobil Producing Nigeria Unlimited on 12 December 2024 and now operates the joint venture with NNPC, including the terminal, whose design capacity Seplat states as 600,000 barrels per day with loading from single-point moorings about 23 miles offshore.4 The regulator reported 171.72 thousand b/d through the terminal in August 2026, the third largest in the country.5

Who buys it

Qua Iboe is a regular feature of Asian purchase tenders: tanker-tracking firm Kpler has reported Indonesia's Pertamina buying Forcados and Qua Iboe cargoes,6 and the EIA notes that Nigeria has been Indonesia's largest single source of imported crude.7

Distillation yields

Yields in vol% as published. Source: ExxonMobil, assay dated 19 January 2024.
CutYield (vol%)
C5–65 °C5.6
65–100 °C6.8
100–150 °C11.3
150–200 °C9.7
200–250 °C10.9
250–300 °C12.2
300–350 °C11.5
350–370 °C4.1
370 °C+ residue26.1
of which 550 °C+4.7

Other assay values: density 837.9 kg/m³; viscosity 4.8 cSt at 20 °C; 3.1 cSt at 40 °C; nickel 3.5 and vanadium 0.3 mg/kg.1

How published figures compare

Publishers quote different qualities for Qua Iboe because assays are run years apart on a stream whose field mix changes, and because price-reporting agencies publish rounded "typical" values. We show the figures side by side rather than silently choosing one.

SourceAPISulphur wt%Evidence
ExxonMobil, 19 January 2024137.30.12Company-reported
Argus typical, Aug 2026336.60.13Industry
EIA table, Nov 20258380.12Government

Loading, operator and output

Loading point
Qua Iboe Terminal (QIT) — see the export terminal database
Operator
Seplat Energy Producing Nigeria Unlimited, operator of the NNPC/SEPNU joint venture since 12 December 2024 (formerly Mobil Producing Nigeria)4
Producing area
Shallow-water offshore Akwa Ibom State
Status
Active
Reported output
173.4 thousand b/d — QUA IBOE stream, May 2026.9 This is production by stream, not exports; part of some streams is delivered to Nigerian refineries.
Pricing basis
A differential to Dated Brent — see how Nigerian crude is priced
Volume conversion
7.51 barrels per tonne at this gravity (our derived figure) — the barrels-to-tonnes converter has Qua Iboe as a preset
Checking an offer
A genuine Qua Iboe cargo traces back to the operator and loading point above. See who can lawfully sell Nigerian crude and the verification centre before engaging any seller

Comparable grades

The Nigerian grades closest to Qua Iboe by API gravity. The comparison tool puts any of them side by side.

Sources

  1. ExxonMobil — Qua Iboe assay (ref. QUAIB24Y) (published 19 January 2024; retrieved 18 September 2026) Company-reportedPublished with the company's no-warranty disclaimer.
  2. Nigeria Crude Oil Merchant — Derived calculation — see our methodology (retrieved 18 September 2026) IndustryOur own arithmetic on cited inputs; not an official figure.
  3. Argus Media — Argus Crude methodology and specifications guide (West Africa typical qualities and cargo sizes) (published August 2026; retrieved 18 September 2026) Industry'Typical' values used for price assessment, not a laboratory assay.
  4. Seplat Energy — Completion of the acquisition of MPNU — investor presentation (published 12 December 2024; retrieved 18 September 2026) Company-reported
  5. Nigerian Upstream Petroleum Regulatory Commission — August 2026 production status release (published 13 September 2026; retrieved 18 September 2026) Regulatory
  6. Kpler — West African crude prices recover on Asian demand (retrieved 18 September 2026) IndustryThe page carries no publication date.
  7. U.S. Energy Information Administration — Country Analysis Brief: Indonesia (published 25 August 2025; retrieved 18 September 2026) GovernmentImport shares based on Vortexa tanker tracking.
  8. U.S. Energy Information Administration — Country Analysis Brief: Nigeria (published 18 November 2025; retrieved 18 September 2026) GovernmentExport volumes are EIA and Global Trade Tracker estimates for calendar 2024. Grade table draws on Argus, Reuters and OIES.
  9. Nigerian Upstream Petroleum Regulatory Commission — 2026 daily average crude oil and condensate production by terminal stream, January–May (provisional) (published June 2026; retrieved 18 September 2026) RegulatoryProduction by stream, not exports. Provisional.

Last reviewed 18 September 2026. Found an error? Tell us — see our methodology and corrections policy.