The Captain field is located on the edge of the Outer Moray Firth, 68 miles north of Aberdeen and its oil is relatively acidic, heavy and viscous.

Captain produces to a Floating Production Storage Offtake Vessel (FPSO). Crude oil is exported via shuttle tankers to customers in Northwest Europe (usual cargo size 500 thousand barrels) and to Nigg for further trans-shipping.

Whole Crude Properties *

Property Measured
Gravity, API° 19.80
Gravity SG 0.94
Sulfur, wt% 0.64
Total Nitrogen, ppm 2044.21
Acid Number, mg KOH/g 1.91
Pour Point, °C -32.43
Charact. Factor (K-FACTOR) 11.74
Viscosity, cSt at 40°C (104°F) 132.88
Viscosity, cSt at 50°C (122°F) 76.44
Vanadium, ppm 9.73
Nickel, ppm 4.52
MCR, wt% 3.81
Ramsbottom Carbon, wt% 3.15
Asphaltenes, (H.C7) wt% 0.16

* Disclaimer

While we believe that this assay is representative of the expected commercial crude, it does not guarantee production quality, and users are solely responsible for their use of the assay. No warranties are given regarding the assay accuracy or any results from its use. Chevron does not warrant or make any representations regarding the use or the results of the use of the foregoing opinion, information or data in this site in terms of their correctness, accuracy, results, use, quality, reliability, or otherwise.

Captain Assay Data

The following links provide you with assay data tables (disclaimer) for various properties across a standard set of cuts, as well as a distillation summary in °F and °C.

This is only a partial assay, if you require further data please contact us.

If you have trouble downloading or viewing the data, please contact us for the information in a preferred format.