Identifying asphaltene precipitation and aggregation with a formation testing and sampling tool

A method for measuring an asphaltene precipitation comprising:

• disposing a fluid sampling tool into a wellbore at a first depth, wherein the fluid sampling tool comprises:
• a probe section comprising:
• one or more probes that are extendable from and attached to the probe section;
• at least two stabilizers that are extendable from and attached to the probe section;
• and
• a housing disposed in the probe section that includes a bi directional piston pump of 100 cc of capacity and a capability to operate up to 20000 psi below hydrostatic pressure;
• pressing the one or more probes into a surface of the wellbore;
• drawing a reservoir fluid from the wellbore through the one or more probes;
• placing the reservoir fluid into the housing;
• isolating the housing of the fluid sampling tool with at least three shut in valves, wherein the isolated housing has at least one pressure gauge;
• depressurizing the housing with the bi directional piston pump;
• and
• measuring the asphaltene precipitation of the reservoir fluid within the housing.