Trenchless PRB Installation Projects, Kelly AFB --San Antonio · 2005-01-11 · Bench Scale...
Transcript of Trenchless PRB Installation Projects, Kelly AFB --San Antonio · 2005-01-11 · Bench Scale...
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GeoSierra LLC 1
Trenchless PRB Installation ProjectsTrenchless PRB Installation ProjectsKelly AFBKelly AFB -- San AntonioSan Antonio
Jim Ortman
GeoSierra Atlanta, GA
Website: www.geosierra.com
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GeoSierra LLC 2
Kelly AFBKelly AFBPRB Project ScopePRB Project Scope
5 PRBs totaling 3,650’
2,100’ on 2-Lane City Streets
1,550’ Within An Active Railroad Right-of-Way
Average Depth – 20 ft bgs to 40 ft bgs
1,000 Tons of Iron
Complex site circumstances
Minimum Footprint Requirements
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Drilling Frac Casing BoreholesDrilling Frac Casing Boreholes
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QA/QC ProcessesQA/QC Processes
Bench Scale Treatability Column Test
Pre-Construction Hydraulic Pulse Interference Test
Probabilistic Design
Active Resistivity Imaging
Inclined Profile Resistivity or Magnetometer
Post-Construction Hydraulic Pulse Interference Test
Ongoing Gel and Iron QA/QC Tests
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Ground Surface
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Pre and PostPre and Post--ConstructionConstructionHydraulic Pulse Interference TestHydraulic Pulse Interference Test
Observation Wells
Source Well
Plugs
Packers
High Precision Pressure Tranducers
Iron Reactive Barrier
Hydraulic Source
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Pulse Interference Setup and MonitoringPulse Interference Setup and Monitoring
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Navigating Around UtilitiesNavigating Around Utilities
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Handling and Logging CoresHandling and Logging Cores
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Gravel and Cobbles GeologyGravel and Cobbles GeologyCity of San AntonioCity of San Antonio
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Frac Casings and Iron FilingsFrac Casings and Iron Filings in Project Warehousein Project Warehouse
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Aligning Feeder Pipe and Frac CasingAligning Feeder Pipe and Frac Casing
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Setting and Aligning CasingSetting and Aligning Casing
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GeoSierra LLC 13
Confirming Casing Alignment WithConfirming Casing Alignment WithDownhole Camera and CompassDownhole Camera and Compass
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Surrounding Casing with Cement GroutSurrounding Casing with Cement Grout
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Placing Resistivity StringPlacing Resistivity Stringat Same Depth as Frac Casingat Same Depth as Frac Casing
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Frac Casings in Place Ready to FracFrac Casings in Place Ready to Frac
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Frac Equipment FootprintFrac Equipment Footprint Tinker AFB Kelly AFBTinker AFB Kelly AFB
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Iron Filings over Mixer Adding Iron to GelIron Filings over Mixer Adding Iron to Gel
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RealReal--Time Active ResistivityTime Active ResistivityImage of Frac InjectionImage of Frac Injection
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Inclined Profile Soil Resistivity Inclined Profile Soil Resistivity Probe to Verify PRB Thickness Probe to Verify PRB Thickness
Soil ResistivityProbe
IronPRB
Inclined Length (feet)
Res
istiv
ity(o
hm-c
m)
30 31 32 33 34 35 36 370
500
1000
1500
2000
2500
3000
3500
4000
PRB IntersectionLength= 9.6”PRB Thickness= 4.8”
5
4
32
167
98
N
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PulseWellPW-3at100-105'20gpmwith20secintervalPhase1Post-PRB 02/09/01
PulseWellPW-3at100'-105'20gpmwith20sec intervalPhase1Pre-PRB 11/04/00
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Pre and Post Construction ComparisonsPre and Post Construction Comparisons Verify the Permeability of the PRBVerify the Permeability of the PRB
Time(mins)
Rec
eive
r Pre
ssur
e (p
si)
Sou
rce
Flow
Rat
e (g
pm)
0 0.25 0.5 0.75 10
0.025
0.05
0.075
0.1
0
10
20
30
40
50
60
70
80
90
100
PW-1 PW-4 PW-2 PW-3
Time(mins)
Rec
eive
r Pre
ssur
e (p
si)
Sou
rce
Flow
Rat
e (g
pm)
0 0.25 0.5 0.75 10
0.025
0.05
0.075
0.1
0
10
20
30
40
50
60
70
80
90
100
PW-1 PW-2 PW-4 PW-3
Pulse Well PW-3 at 100’ – 105’ 20 gpm with 20 sec. interval Phase 1 Pre-PRB 11/04/00
Pulse Well PW-3 at 100’ – 105’ 20 gpm with 20 sec. Interval Phase 1 Post-PRB 02/09/01
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GeoSierra Installed PRBsGeoSierra Installed PRBs…Proven Technology…Proven Technology
Depth Length _______Site Name________ 65’ 360’ Caldwell Superfund Site - NJ
75’ 240’ McGraw Edison Superfund Site - IA
115’ 100’ DuPont - Oakley, CA
40’ 1200’ Arrowhead Superfund Site – VA
100’ 100’ BP - Gardena, CA
115’ 75’ Sierra Army Depot - Herlong, CA
95’ 500’ Tinker AFB – Oklahoma City
40’ 3650’ Kelly AFB (5 PRBs) Installation Underway