Crude Oil Testing And Evaluation

(1) Crude oil types: conventional crude oil, heavy crude oil, heavy oil, high pour point crude oil, high sulfur crude oil, low sulfur crude oil, cycloalkyl crude oil, paraffin based crude oil, intermediate base crude oil, offshore crude oil, onshore crude oil, shale oil, oil sand asphalt, etc.

(2) Applicable scenarios: crude oil exploration evaluation, wellhead sampling monitoring, pipeline/shipping handover measurement, incoming raw material acceptance, distillation scheme formulation, corrosion risk assessment, environmental protection evaluation, trade settlement, arbitration testing.

(3) Purpose of evaluation: To determine the crude oil category, processing performance, storage and transportation safety, corrosiveness, product yield, and economic value.

(1) Basic physical property indicators
Appearance, color, odor, density (20 ℃), API degree, kinematic viscosity, wax content, resin, asphaltene, residual carbon, moisture, mechanical impurities, salt content, ash content.

(2) Distillate and evaporation performance
Actual boiling point distillation, atmospheric distillation range, vacuum distillation range, yields of various fractions (gasoline, kerosene, diesel, wax oil, residue oil), and evaporation loss.

(3) Low temperature and flowability
Evaluation of solidification point, pour point, cold filtration point, wax precipitation point, low-temperature flowability, heating flowability, and pipeline flowability.

(4) Sulfur and corrosive elements
Total sulfur, mercaptan sulfur, hydrogen sulfide, elemental sulfur, nitrogen content, chlorine content, metal elements (iron, nickel, vanadium, copper, lead, sodium, calcium, arsenic, mercury, etc.).

(5) Stability and storage performance
Oxidation stability, thermal stability, storage stability, sediment tendency, aging performance, emulsification and demulsification performance.