Sampling

                     
1. Take cuttings from the shale shaker. (Note on Geo-Jar label if any gas “fizz” is noticed)
2. Rinse cuttings with water to remove as much drilling mud as possible.
3. Put cuttings in jar to line on label (about ½ full)
4. Only add water to just about ½ inch above the cuttings or to the water line. (Do not fill the bottle with water as the headspace is needed to allow gas to desorb into the gap).
5. Leave about a 1 inch gap between the water and top of the jar.
6. Add 5 drops of the bactericide, Zephiran Chloride, to the jar.
7. Wipe the top of the Geo-Jar top seal area and cap clean of any particulate matter such as cuttings chips.
8. Screw the lid on as tight as possible.
9. Tape the lid to keep it tight and from vibrating loose during shipment.
10. Tape in same direction (clockwise) that the lid is screwed on.

Recording Sample Information

1. Fill in the information on each jar.

The above is an example of the label on the jar – complete the label with all information available.

Packaging Geo-Jars

1. After jars are tightly sealed and taped, place them upside down in the original shipping box. If any water leaks are detected, retake the sample.
2. Complete the log sheet included in each box:
   List the samples being shipped in the box by operator, well name, depth interval, depth units (ft. or m.), date, and time.
3. Thoroughly seal the provided shipping box with tape.
4. Labels will indicate “THIS SIDE UP”, i.e., for shipping the bottles upside down as best as possible. This prevents any possible gas leakage if sealed correctly.
5. Return to:
   Humble Geochemical Services
   218 Higgins Street,
   Humble, Texas 77338.
   Telephone: 281.540.6050