GC2 PFT Analysis: User Guide
Rev. 376 | June 2018 – V.Percuoco
Draft 6/7/2011; Rev. 1/2/1014; Rev. 371T | July 2017 – D.Houpt
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- Turn off the Ethernet router located on the top rear of Pump A (Figure 3) and use the "Prime" button to prime the pump, or the up/down arrows and "Run" to change its flowrate.
- If the lines from the tracer bottle to the HPLC pump valve are empty, place an empty plastic syringe into the port labeled "Prime/Purge", twist the black screw valve open and extract until tracer flows into the syringe. Then close the screw valve, remove the syringe and inject the residue back into the tracer bottle.
- Press "Prime" on the console, then plug the Ethernet back in.
- Ensure the valves along the flowpath of the tracer to the mud pipe are open and correctly configured (Figure 4).
Ensure the lines exiting the cap of the tracer reservoir are sealed with putty to prevent tracer from evaporating away.
Figure 1: HPLC pumps and tracer bottle.
Figure 2: PFMD introduction to mud pump pipeline
Figure 3: Tracer pump ethernet connection for control by drillshack.
Figure 4: Valve setup for delivering PFMD from tracer pump B to the drilling fluid.Analytical Overview
After core retrieval, samples for PFT measurement are immediately taken from selected sections. Headspace vials containing the collected sediment are heated ~30 min in an oven to evaporate and release the tracer, and then an aliquot of the vial headspace is injected onto a gas chromatograph equipped with a micro electron capture detector (GC-µECD), which is extremely sensitive to halogenated compounds.Apparatus, Reagents, & Materials
Laboratory Apparatus
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Both PFMCH and PFMD are considered to be non-hazardous by US and EU classifications under normal conditions.
Chemical Hazards:
- Incompatible substances: oxidizing agents, strong acids, strong bases
- Emits toxic fumes (HF) under fire conditions
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