deployment monitoring & drill logging (offline) at pole
DESCRIPTION
Deployment Monitoring & Drill Logging (offline) at Pole. Kurt Woschnagg IceCube collaboration meeting, Berkeley, March 2005. Some more about. Drill logging in 04/05 season. The plan Monitor drilling, hole quality Produce hole profile for string geometry What was done - PowerPoint PPT PresentationTRANSCRIPT
Deployment Monitoring&
Drill Logging (offline) at PoleKurt Woschnagg
IceCube collaboration meeting, Berkeley, March 2005
Drill logging in 04/05 season• The plan
– Monitor drilling, hole quality– Produce hole profile for string geometry
• What was done– Drill data transferred to public disk in 5 min chunks– Real-time logging analysis in North…
• Bob Morse, Varun Gopalakrishna at UW (Bob’s talk)• Jack Ambuel, Bruce Koci, others• Example: hole profile (x, y)
– …and at Pole• Cindy Mackenzie: data transfer• KW: logging, analysis• Communication: web, email, phone• Example 1: web based drill depth/speed info (Steffen Richter)• Example 2: caliper data for final go
– Logging and analysis scripts run in both places
Some more about
Hole profile (x, y) for geometry
From the archives: Actual plot used in final go/no-go decision
Drilling (down)
Ream (up)
hole
dia
met
er [
cm]
hole
dia
met
er [
cm]
depth [m]
depth [m]
Suggestions for Next Season
• Faster codes (perl instead of java)• Integrate into drill monitoring• …also keep independent
– Crucial for cross-checks
• Define standard plots• Define procedure & plots for hole hand-over• Bob M to Pole!
Deployment Monitoring
1
60
59
dust logger
Paro2 (pressure, temp)
Paro1 (pressure, temp)
29Keller (pressure)Thermistor (temp)
Thermistors (temp)not read out during deployment
39
47
55
Readout (Data Deployment Box):Jack Ambuel, PSL
Monitoring system (chucknet):Chuck Rentmeesters, UW
Cables/breakouts/connectors:Jim Baccus, UWHarold Mattison, PSL
Sensors:Michael Solarz, UCB
Pole support:Mark ThomaSteffen Richter
Data transfer:Cindy Mackenzie, UW
2435.8 m
Project Phase TransitionManagement-
densePhysics
dominated
Water Compressibility Correction
The compressibility of pure water is tiny,
κ0 = 3.4456e-6 (PSI)-1
but not negligible in a 2500 m hole!
Slightly higher for aerated water.
Use depth difference between Parosto fit effective compressibility:
κ = 3.78e-6 (PSI)-1
Then (after integration):
depth[m] = C/(Dκ)·(exp(- κP0)-exp(- κP))
P,P0 in PSI D = 0.99987 g/cm3; C = 0.7030696
Not implemented in monitoring system, so final depth is 2435.8 m (not 2450.8)
Deployment Monitoring
1
60
59
29
39
47
55
Monitored during deployment:Depth (bottom DOM) from pressure sensors - Paro1 - Paro2 - Keller
Pressure differences - Paro2-Paro1 - Paro2-Keller - Paro1-Keller
Payout
Drop speed
Well depth (by hand, with laser ranger)
Monitored during freeze-in:Pressures (x3)Temperatures (x3)
deployment
drop
Density of oil column changes with temperature
Pressure build-up when hole closed off at OM – pressure release when water breaks through
A typical Paro pressure profile in AMANDA
Water frozen at Paro -Oil column volume fixed
Freeze-in begins
Total pressure release corresponds to change in density between water and ice
Freeze-in Monitoring
1
60
59Paro2 (pressure, temp)
Paro1 (pressure, temp)
29Keller (pressure)Thermistor (temp)
39
47
55