Work Item
ASTM WK64557
New Test Method for Determination of the Asphaltene Solvency Properties of Bitumen, Crude Oil, Condensate and/or Related Products for the Purpose of Calculating Stability, Compatibility for Blending, Fouling and Processibility (Manual Microscopy Method)
1. Scope
1.Scope * 1.1This test method covers the use of a basic microscope to determine the asphaltene solvency properties of bitumen, crude oil, condensate and/or related products. These properties can be used to calculate the solubility parameters required to calculate and predict asphaltene stability for blending purposes, refinery unit fouling, processibility, emulsion stabilization, pipeline and tank deposition, and equipment fouling. If the solubility properties are known for two products then the compatibility of potential blend ratios can be predicted. 1.2This test method is limited to products that allow handling at atmospheric pressure and room temperature conditions without a significant loss of light end components. Loss of light ends will result in changes in the solubility properties of the product and may alter and/or bias the results. Samples with vapor pressures (VPCR4 @ 37.8C using D6377) greater than 100 kPa are not suitable for use with this test method. 1.3This test method is primarily suited to products that are freely flowing at test conditions. Samples that are too viscous to flow at test conditions, such as semi-solids, may need to be heated to allow handling (See Annex A1).
Keywords
manual method asphaltene bitumen crude oil condesate
Rationale
Manual method as opposed to instrument methods
The title and scope are in draft form and are under development within this ASTM Committee.
Work Item Status
Date Initiated: 07-27-2018
Technical Contact: David Murray
Item: 002
Ballot: D02.14 (18-03)
Status: Item Going To Next Ballot Level
Item: 101
Ballot: D02 (19-02)
Status: Will Reballot Item
Item: 107
Ballot: D02 (20-01)
Status: Ballot Item Approved