Groundwater monitoring technologies for CCS projects

By Gonzalo ZambranoGeological Storage Research Group, University of Alberta

Downhole Fluid Recovery System (FRS) Deployment at PennWest

CO2 -EOR Monitoring Project

Outline

Surface monitoringDownhole monitoringDownhole Fluid Recovery System Application at PennWest CO2-EOR

Surface Monitoring

Reservoir fluid sampling at ground level: Geochemestryof production fluid and gases (Weyburn)

• Economic

• Portable laboratory equipment

• Depressurization effects and chemistry change

CONSIDERATIONS

Downhole monitoring

Downhole sample ports

-Permanent Installation System

-Packer System

• High initial cost

• Well dedicated for monitoring

• Expertise in downhole installation

CONSIDERATIONS ADDED VALUE

• Sample at multiple horizons @ reservoir level@ Cap rock (seal) level

• Samples at in-situ conditions

Zambrano, G. and Chalaturnyk, R. 2007

Downhole Monitoring Technology

Permanent installation system

Zambrano, G. and Chalaturnyk, R., 2007

CL Casing

Tubing

Cement

Formation

Perforations

Sample port

Permanent Installation of Multi-instrument System

Zambrano, G. and Chalaturnyk, R., 2007

Options for Openhole Completions – U-Tube

Packer system

Freifeld, B. et al, 2005

Application of Multi-instrument String in CCS projects

Gas Seal System Multi-instrument’s GeometryWell Integrity Monitoring Completion Issues : Borehole Stability Cement Job

Considerations

Penn West CO2 -EOR PilotPenn West CO2-EOR Pilot

Pennwest CO2 -EOR Pilot

100/7-11 well (the OBS Well)

102/7-11 well (the newly drilled production well)

P2P2

I1I1

100/7-11 well (the OBS Well)

102/7-11 well (the newly drilled production well)

100/7-11 well (the OBS Well)

102/7-11 well (the newly drilled production well)

100/7-11 well (the OBS Well)

102/7-11 well (the newly drilled production well)

P1P1P1P1

P2P2

I1I1

Pennwest CO2 -EOR Pilot 6 Producers, and 2 injectors

Observation Well Specifications

Well depth: 1600 m (5250 ft)Casing: 139.7 mm (5.5 in) @ 25.3 kg/mBHP: approximately 19 MPa (2700 psi)BHT: approximately 50°C (122 °F)Deviation: none (vertical well)Other: well is sweet

Geology and Design Completion

1619.51619

1599

1291.4

1023

506494434Ardley Coal

Knee Hill Tuff

Edmonton

Belly River

Lea Park

Cardium Zone

Cardium Conglomerate

Upper Cardium Sandstone

Middle Cardium Sandstone

Lower Cardium Sandstone

0Ground Surface

1622

1630.5

110011201140116011801200122012401260128013001320134013601380140014201440146014801500152015401560158016001620

Cement Top at 1200 mDFluid Sampling Port #1at 1301 mD. Port located within Upper Lea Park zones whereporosity is ~ 7%

Fluid Sampling Port #2at 1622 mD. Port located within Upper/MiddleCardium SST

Two (2) pressure/temp. gauges at 1621 mD.

Two (2) pressure/temp. gauges at 1610 mD. Inthe middle of the CardiumZone.

Two (2) pressure/temp. gauges at 1302 mD.

All fluid sampling tubing, geophone cables and gauge cables run to surface. From surface to 1200 mD filled with inhibited fluid (water). All instrumentation strapped to 2 3/8 “ tubing string.

Completion Configuration for Obs Well (100/7-11-48-9W5)

1637.2

8 Geophone String. Bottom phoneat 1640 mD and phone spacing is20 m.

2 downhole2 downholefluid samplingfluid samplingportsports

8 phone 8 phone Geophone Geophone stringstring

Shale

3 pairs of 3 pairs of pressure/ pressure/ temperature temperature gaugesgauges

Ground Surface

Ardley CoalKnee Hill Tuff

Belly River

Lea Park

Cardium Zone

Cardium Conglomerate

Upper Cardium Sandstone

Middle Cardium Sandstone

Lower Cardium Sandstone

Knee Hill Tuff

1100110011201140116011801200122012401260128013001320134013601380140014201440146014801500152015401560158016001620

0

434494506

1023

1291.1

1599

16191919.5

1622

1630.5

1637.2

Pressure/temp. gauges at 1611 mkb. In the middle of the Cardium Zone

Fluid Sampling Port #2 at 1622 mkb. Port located within Upper/Middle Cardium SST

Fluid Sampling Port #1 at 1301mkb. Port located within Upper Lea Park zones where porosity is ~ 7%

Pressure/temp. gauges at 1302 mkb.

Cement Top at 1200 mkb

All fluid sampling tubing, geophone cables and gauge cables run to surface. From surface to 1200 mkb filled with inhibited fluid (water). All instrumentation strapped to 2 38" tubing string.

Compleation Configuration for Obs Well (100/7-11-48-9W5)Geology(Top) for 1002/7-11-48-9W5 (approx. 35 m from Obs Well)

8 Geophone String. Bottom phone at 1640 mkb and phone spacing is 20 m.

FRS

Return

Sample

State #1 State #2

Inject Return

Sample

Inject

Poppet with 0.022" hole Very light spring (~1psi crack pressure)

Operate at low ΔP

Fluid Recovery System (FRS)

Zambrano, G. and Chalaturnyk, R. 2007

FRS 2006 Preliminary results

Zambrano, G. and Chalaturnyk, R. 2007

Work Plan 2007 - 2008

Groundwater monitoring technologies for CCS projects

By Gonzalo ZambranoGeological Storage Research Group, University of Alberta

Downhole Fluid Recovery System (FRS) Deployment at PennWest

CO2 -EOR Monitoring Project

QUESTIONS ?