dave allison october 31, 2011 method to help improve long-term production following shale fracture...
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Dave AllisonOctober 31, 2011
Method to Help Improve Long-Term Production Following Shale Fracture Treatments
2© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
AccessFracSM Service
Method to Help Improve Long-Term Production Following Shale Fracture Treatments
Poor Proppant Distribution
Not Contacting Enough of the Reservoir
Hindered Hydrocarbon Production
3© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Dave Allison
Tenet Manager – MSRV
AccessFrac Service
4© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
AccessFrac Service
Method to Help Improve Long-Term Production Following Shale Fracture Treatments
Poor Proppant Distribution
Not Contacting Enough of the Reservoir
Hindered Hydrocarbon Production
5© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Improved Proppant Distribution
AccessFrac Service
Computer Modeling Studies
Analysis of Production Logs
Lower than Expected Initial Production
Faster than Expected Production Declines
Analysis of Microseismic Mapping
6© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Improved Proppant Distribution
7© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Improved Proppant Distribution
BioVert® NWB material
Self Removing
Environmentally Friendly
Highly Compatible
Temporary Blockage
Near Wellbore
8© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
AccessFrac ServiceTraditionally use drillable bridge plugs to isolate clusters
• Physical barrier• Means to deliver perforating guns• Highly reliable• Drillable
What other mechanism can we use to isolate clusters?
Improvement Opportunities / Risk Mitigation• Reduce time – installation• Reduce time – removal• Reduce risk – premature set or perforating• Reduce cost – displacement fluids
Biovert ® NWB Self-Degrading Diverting Agent
9© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Pump perforating gun and frac plug on depth Set the frac plug Correlate perforating gun and perforate Pull out of the hole Time requirements 3-5 hours Repeat the process 15 – 30 times Equipment standby time between 2 and 7 days At conclusion the plugs have to be drilled out using a rig
Traditional - Plug and Perforate
10© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Group 2 or 3 perforation clusters Pump perforating guns and frac plug on depth Pump frac treatments followed by diverters Repeat as needed to cover lateral Savings – Time 6-10 hours (perf & plug ops) per group Savings – Time 1-4 days (equipment stand-by ) per well Savings – Safety: reduce perforating exposure Reduce - Risk of bridge plug setting prematurely Savings – Cost of 66% of bridge plugs Savings – Time reduce drill out ops by 66% To clean well out:
– Diverter self degrades– Plugs drilled out using rig
Savings – Reduced displacement fluid by 66% Savings – Time (faster) for fluid flow back
AccessFrac Service
Achieve much better access to complex fracture networks
11© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Case History 21 - 2010
Treatment Chart:
1st Biovert NWB on perforations +60 psi increase
2nd Diverter gives 115 psi increase
3rd Diverter gives 1542 psi increase
1st
3rd
New Completion -
Denton County – Horizontal Well
Replace Pump Down Plug
2nd
12© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Case History 22 - 2010
Treatment Chart:
Biovert NWB agent on perforations +916 psi increase
Biovert NWB
New Completion -
Denton County – Horizontal Well
Replace Pump Down Plug
Results: Saved considerable time and expense. Production equals offsets.
13© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
AccessFrac Service
Method to Help Improve Long-Term Production Following Shale Fracture Treatments
Poor Proppant Distribution
Not Contacting Enough of the Reservoir
Hindered Hydrocarbon Production
14© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Enhanced Reservoir Contact
AccessFrac Service
Analysis of Production Logs
Lower than Expected Initial Production
Faster than Expected Production Declines
Analysis of Microseismic Mapping
15© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
1
23
4
Non Stimulated AreaStage 3
Non Stimulated AreaStage 4
Deep Reservoir Diversion Candidate
16© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Enhance Reservoir Contact
BioVert CF material
Self Removing
Environmentally Friendly
Highly Compatible
Temporary Blockage
Deep Reservoir
17© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
AccessFrac Service
Method to Help Improve Long-Term Production Following Shale Fracture Treatments
Poor Proppant Distribution
Not Contacting Enough of the Reservoir
Hindered Hydrocarbon Production
18© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Customizable Conductivity
26% Porosity48% Porosity
65+% Porosity 85+% Porosity
19© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Customizable Conductivity
SandWedge® ABC enhancer
Water Based System
Highly Compatible
Enhanced Conductivity
Surface Modification Agent
SandWedge Enhancer Family
100,000+ applications30% more conductivity
20© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
1 2 3 4 5 60
500000
1000000
1500000
2000000
2500000
3000000
6 Month Cumulative Production
W Chudleigh 3H-NW
TEEL 8H
BLACK 1H
ELY 6H
HUBBARD 5H
R SMITH 3H
HUBBARD 6H
GESFORD 7H-NW
BLACK 2H
B SEVERCOOL 2H-NW
R SMITH 1H
ELY 4H
J GRIMSLEY 2H-SE
HEITSMAN 4H-NW
RATZEL 2H
ELY 1H
Gas
(M
cf)
SandWedge Enhancer
SandWedge
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No. 11
No. 13
No. 12
No. 15
No. 16
21© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
AccessFrac Service
Method to Help Improve Long-Term Production Following Shale Fracture Treatments
Typical shale fracture without diversion
Complex fracture network with proppant using AccessFrac service
22© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
AccessFrac Service
Method to Help Improve Long-Term Production Following Shale Fracture Treatments
Poor Proppant Distribution
Not contacting enough of the reservoir
Hindered Hydrocarbon Production
BioVert NWB
BioVert CF
SandWedge ABC
23© 2011 HALLIBURTON. ALL RIGHTS RESERVED.
Thank you
Halliburton Energy Services
AccessFrac Service