Difference between revisions of "January 31"

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Latest revision as of 19:40, 26 March 2020



EGS Collab Daily Shift Report

Date:  01/31/20

Written by:  Earl Mattson

SURF Personnel/Guide: Hari N, Carlo P, and George V.

Location(s): 4850 West Access Drift Collab/SIGMA-V site

 

Summary: 

Goals for today was to:

·      Final measurements of Rhodamine-B Break Through Curves (BTC) at production locations

·      Measure Rhodamine-B residual concentration from ISCO

·      Set up Rhodamine-B sorption tests

·      Set up for Fluorescein testing

 

Experiment inspection – System was flowing well.

 

Tracer injection residual Rhod-B tracer in the ISCO pump back flush water was calculated.  840 ml backflushed at various times.  21.75% of the total Rhodamine-B that was to be injection remained in this pump and tubing. The calculated injected mass was adjusted to account for this residual mass. It took quite a bit of flushing to clean the ISCO pump.  We should check solubility of Rhodamine to see if we exceeded the solubility limit.

 

Rhodamine-B detection at production wells Rhodamine-B was detected in PI and PB.  Overnight fraction collector samples (see 16:00 to 7:00 samples) may have a bias that appear to be too low as compared to the samples collected in the morning. This suggests a potential sorption issue on the bottle or fraction collection line.

 

Rhod-B sorption test – cannot be conducted in the drift with the present equipment.  Rhodamine-B sorbs to the 0.45 um filters preventing us to obtain uncontaminated samples for analysis.  This test will have to be conducted in a laboratory that has access to a centrifuge to settle the rock fines.

 

Fluorescein sorption tests – An initial test indicates that fluorescein does not sorb on filters. A kinetic test was performed to assess if fluorescein absorbs onto the crushed rock. A 30-minute batch test was conducted with 5 ppm fluorescein and crushed Poorman Formation rock at a 1:1 ratio.  Results indicate that fluorescein also absorbs to the Poorman Formation rock and is not a good candidate to use as a conservative tracer.

 

Other   -     Carlo acquired DNA samples.

 

Lead Researcher:  Earl Mattson and Hari Neupane

 

Documents or Procedures: JHAs: EGS-009 and EGS-016.

 

Inspections: none

 

Materials Receiving/Shipping: N/A

 

Comments:  N/A

 

Recommendations: N/A

 

Irregularities: N/A

 

Acts of Safety: A discussion was held with Paul S. on the projected need of tracer testing at the 4850.  We decided that much of the tracer equipment can be removed from the 4850 early next week to facilitate the ultimate dismantling of Experiment 1.

 

Near Misses or Incidents:  N/A

 

EGS Collab Personnel Hours (Surface and Underground):

 

 

Name

Surface Hours

Underground Hours

Time In

Time Out

Time In

Time Out

1

Earl Mattson

6:30

18:00

7:30

17:30

2

Hari Neupane

6:30

18:00

7:30

17:30

3

Carlo Primo

6:30

18:00

7:30

17:30

5

George Vandine

6:30

18:00

7:30

17:30

 

1 31 1.png

Tool Box

1 31 2.jpg

Break through curves (not time corrected)