Pricing Kenyan crude

The price a crude fetches is typically against a benchmark such as Brent, WTI or Urals and the underlying crude marketing agreement will detail the calculation of the premium or discount to such a benchmark as well as other adjustments. As Kenyan crude has never been marketed before, there is no established pricing for Lokichar crude – however, a hypothetical value can be calculated. One of the key determinants of crude pricing is crude quality with the heaviness (API gravity) and sourness (sulphur content) often being a point of focus.

The heaviness of a crude is measured in °API and is a measurement of how heavy or light a crude is compared to water. Crude with an above 10°API is lighter than and will therefore float on water (i.e. is less dense). Heavier crude oils have longer hydrocarbon chain lengths and are generally less desirable as it is more difficult to convert them into more useful petroleum products. Light crude oil is defined as having an API gravity of greater than 31.1° API and a heavy crude oil has an API gravity of below 22.3° API.

The sourness of a crude is a measure of the level of sulphur by weight. Crude with less than 0.5% sulphur is considered sweet and above this level is sour. Sour crude is less desirable as the sulphur is a corrosive material and requires more processing; there are also increasingly strict limits on the sulphur content of gasoline and other petroleum products.

Amosing well testshave flowed oil between 31° to 38° API and is therefore considered a light oil; sulphur content is generally less than 0.1%. Based on test results to date, Lokichar crude is relatively high quality and should fetch pricing broadly in line with Brent (see bubble chart).

Other determinants of crude oil pricing are:

• Location - the total cost to a buyer is the wellhead price plus the cost of transportation and freight which will be benchmarked against other sources of supply
• Logistics – for long haul crudes, larger parcels tend to command a premium as per unit freight costs are lower; this also requires the loading and destination ports to be able handle larger vessels as well as having sufficient storage facilities
• Destination – refineries have different configurations in that they are setup to process different kinds of crudes. Not all refineries require light, sweet crudes and some are built to handle heavier crudes and will desire certain crude blends over others 

Refiners pay particular attention to the crude assay, or the chemical composition of the crude – this goes beyond looking at the API gravity and sulphur content mentioned above. For example, the pour point, wax content, level of other impurities are important considerations and depending on the refinery product slate, the refinery yields are also key (this refers to the relative proportion of the different hydrocarbon chain lengths in the oil). BP’s assay for Brent is shown below.