GENERAL47848

• Permit No: M1999002
• IBM Index Class Name: General Documents
• Doc Date: 7/30/2004
• Doc Name: Well 20-12: Coaxical Cable
• From: American Soda LLP
• To: DMG
• Media Type: D
• Archive: No

AMERICAN
S O D A, L L P Ed Cooley
Environmental Health and
Safety Manager
2717 County Road 215
Parachute. CO 81635
Wednesday, July 28, 2004
Elisabeth Evans
Director Technology Enforcement Program
U.S. Environmental Protection Agency
Region VIII
999 18'" Street, Suite 300
Mail Code BENF-T
Denver, Colorado 80202-2466
ENV.162.04
Re; Well 20-12 (C03858-04552)
Dear Elisabeth:
On June 7, 2004, ASLLP installed 1404' of 2 3/8 tubing with a 7/8" coaxial cable
strapped to the tubing into the long string 7" on well 20-12. The coaxial cable was
crimped at every second joint to provide a distance reference. Upon completing the
installation, time domain response readings on 6/7/2004 were inconclusive. Further
instrumentation testing indicated a problem with the time domain response
instrumentation. The instrument was returned to the manufacture for calibration,
On June 17, 2004, the cable was again tested, The cable indicated a short circuit at a
depth of 1209' feet. This corresponds very closely to a crimp at 1208.84,
187 sacks of 15.6 Ib/gallon type 6 cement with 35% SSA and 0.2% CFR-3 were
circulated down the 2 3/8" tubing and back to the surface. The inside volume of the
tubing was displaced with water and leff open for future temperature logging.
Upon completion of the cementing, the cable was again tested. The cable indicated
a short circuit at a depth of 1000' slightly above a crimp at 1075.09, Upon this result,
ASLLP decided to allow the cement to cure and test the cable again.
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