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

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MERICAN
ODA, LAP
Direct une [phone]
IntemaSOnal Telephone [phone]
General Facsimile [phone]
Safety Manager
2717 County Road 215
Parachute, CO 81635
Wednesday, July 28,2004
Kent Walter
U.S. Bureau of Land Management
73544 Highway 64
Meeker, Colorado 81641
Dear Kent;
Ed Cooley
Envlronmenta! Health and
ENV.160,04
Re: Well 20-12 (C03858-04552)
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. f=urther
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 G cement with 35% SSA and 0.2% CFR-3 were
circulated down the 2 3/8" tubing and back to the surface. The inside volurne of the
tubing was displaced with water and left 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 1015.09. Upon this result,
ASLLP decided to allow the cement to cure and test the cable again.
On July 1, 2004, the cable was again tested. The cable indicated a short cir~~uit at a
depth of 1000' identical to the second test on 6/17/2004.
Attached is a graphical representation of the TDR test with the coaxial cable crimps
indicated.
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