The site monitoring of the Lacq industrial CCS project. CSLF Storage and Monitoring Projects Workshop. Marc LESCANNE - R&D CCS

Transcription

1 DGEP/SCR/RD The site monitoring of the Lacq industrial CCS project CSLF Storage and Monitoring Projects Workshop 1-2 March 2011 Marc LESCANNE - R&D CCS

2 CCS pilot, Lacq, SW France Objectives An integrated carbon capture, transportation and geological storage in a depleted gas field project Industrial scale within existing facilities Official authorization: May 2009 for 5 years (2 y. injection and 3 y. observation) Up to120,000 t CO 2 injection in 2 years Start up injection: January 2010 Project budget: 60 M LACQ PARIS 800 km To demonstrate technical feasibility and reliability of an integrated onshore CCS scheme for steam production at a reduced scale (1/10th of future facilities). To design and operate a 30MWth oxycombustion boiler for CO 2 capture To bring oxy-combustion from laboratory to industrial scale ( MW) in To develop geological storage qualification methodologies, monitoring and verification techniques to prepare future larger scale long term storage projects. 2

3 CCS pilot, Lacq, France An integrated carbon capture, transportation and geological storage in a depleted gas field project CO 2 injection CO 2 transportt CO 2 capture Nt Natural lgas production Compression CO 2 injection CO 2 storage m 8 CO 2 Transportation 7 Purification / CO 2 dehydration Commercial gas Utilities Boiler oxycombustion Steam 5 4 Natural gas Lacq gas treatment plant 3 10 Compression 6 Oxygen Production Unit Natural gas inlet 2 CO 2 Rousse reservoir Lacq gas production 4000 m Lacq deep gas reservoir

4 CCS pilot, Lacq, France Capture description Air separation unit Oxy-combustion Boiler Flue gas cooling tower Cryogenic unit (Air Liquide) id O 2 : 240 t/d Existing 1957 boiler revamped by Alstom to oxy-combustion boiler. Oxyburners developed by Air Liquide (30 MWth, 40 t/h 60b, 450 C) Cooling of flue gases From to 200 C to 30 C Transport Dehydration Unit Wet CO 2 compressor 4 CO 2 composition (@98% O 2 purity) CO 2 : 92.0 % O 2 : 4.0% Ar: 3.7% N 2 : 0.3% Outlet : < 20 ppm of water From 1barg to 27 barg

5 CCS pilot, Lacq, France Transport / Compression / Injection Rousse site City of PAU Transport 27km long pipe (12 and 8 diameter) CO 2 in gas phase Lacq Existing right of way Saint-Faust Rousse 5 km Pont d As Rousse storage RSE-1 injection well head Rousse compressor 5 Depleted gas 4500m/GL Pinlet: 27bar Poutlet: 51bar

6 Transportation and storage CO 2 injection into Rousse depleted gas reservoir City of PAU (140,000 inhabitants) Injection well ROUSSE-1

7 Transportation and storage CO 2 injection into Rousse depleted gas reservoir S Jurassic fractured dolomitic reservoir Depth # 4500m/MSL Tertiary Temp. # 150 C Initial P: 485 bar P before inj: #40b bar Upper Cretaceous Final pressure: # 80 bar Initial CO 2 = 4,6% Initial H2S < 1% Injection well Low Cretaceous Av. Porosity: 3% Rousse Av. matrix Perm. < 1mD depleted gas field Av. SW: 40% Only one well: RSE-1, Cumulated injected CO 2 = 10kt (end 2010) CO 92t/d producing since 1972, 2 flowrate: Reservoir pressure increases as simulated transformed into injector 7 in N

8 Potable aquifer Potable aquifer Storage complex : Overburden, water ressources Well (injector) Deep saline aquifer Caprock Storage site Trap Reservoir Structure OF ROUSSE STORAGE 8 ELEMENTS

9 Objectives of the monitoring program Specific geologic configuration of the storage (deep and low porosity reservoir, final P << initial P, gas into gas) Objectives: Parameters of injection (flow rate, gas composition) Well performance Reservoir behaviour Well and Site integrity: confirmation that gas remains confined in the reservoir no leak upward out of the reservoir through the well and caprock no impact to water resources, to biosphere and human health. 9

10 Monitoring at Rousse Four compartments to be monitored Atmosphere Ecosystems (rivers, fauna, flora) & Soils SURF FACE Vadose Zone Groundwater aquifers WELL Secondary seal COMP PLEX Official (French Administration) Additional R&D Saline aquifer Primary seal Reservoir SITE 10

11 Rousse storage monitoring plan Monitored parameters: CO 2 stream composition & flow rate CO 2 concentration at well site (detectors) Well annulus pressure P&T: borehole and reservoir (optical fiber) Cap rock integrity (micro-seismicity ) Environment: Soil gas concentrations ti and fluxes Groundwater quality Surface water quality Biodiversity - Fauna and flora 3 periods: Parameters prescripted by the Official Authorization R&D project on groundwater/surface/atmosphere monitoring (French National Research Agency) Pre-injection (baseline ante 2010) Pilot: Injection + 3 year observation Post pilot: to be defined

12 Injection Flow rate, composition Flow rate and Composition measured at Lacq plant, before transport. CO 2 composition (@98% O 2 purity): CO 2 : 92.0 % O 2 : 4.0% Ar: 3.7% N 2 : 0.3% Flow rate Q: 52 ksm3/day (95 ton/d) Injection in gas phase Pressure (Bar) Liquid CP Dense Well Head Reservoir L+G Pipeline Gas Temperature ( C) 12

13 Injection Well Rousse-1 Specific completion Objective: To have sensors in the well and check well integrity Completion changed in February Well Logging to check casing and cement (Sonic Scanner and Isolation Scanner) 4 P-T sensors in hole on optical fiber: P and T profiles Calibration of well flow and reservoir models Monitoring of well injectivity Micro-seismic array with 3 triaxial sensors: 150m -350m above top of reservoir Detection mechanical effect of injection on caprock and reservoir Top 4545m 13 Perforations (Mano reservoir): m 13

14 Microseismic monitoring Objective: To monitor caprock integrity One deep array (3 triaxial sensors) in injection well. Seven subsurface arrays with 4 triaxial sensors in 7 shallow wells (TD: 200m/GL): 6 wells on a 2km radius circle around the injection well; 1 well on the injection site. One sismometer for natural sismicity Online and continuous information Minimum detection: magnitude -2 Localization: m 9 month baseline survey before injection Shallow well

15 Environmental monitoring Soil gas, Water, Fauna & flora To detect changes that could be linked to the effect of a CO2 leakage 30km City of PAU Baseline surveys in Soil gas : CO 2 and CH 4 concentration and flux. C isotopy. Inert gas. Autumn and winter. Groundwater (perched aquifer springs) Chemical and mineral content, every 6 months Indicators: ph, conductivity, carbonates, bicarbonates. RSE-1 Idem for shallow and deep saline aquifers sampled at selected existing water wells (drinking water supply of Pau) Surface water (small rivers): Standardized bio- indicators (diatoms and benthic macro invertebrates) and chemical and mineral content. Every 6 months. Fauna and Flora: Annual inventory of: 15 Flora of representative ecosystems (33 sites); Several amphibians and insects species (50 sites). Microseismic shallow wells 1 km

16 Conclusions The Lacq CCS pilot is a challenging project as it integrates both capture facilities, transport, injection and storage into an onshore depleted reservoir. It has required not only engineering and subsurface studies but dialogue with the French Administration as well as with the public and stakeholders. Even if the risk of a CO2 leakage is very low, the monitoring program deployed at Rousse for 5 years, on the basis of the Total qualification studies and taking account of the requirements of the Administration, is very complete. One of our R&D task for the coming years is to define what are the parameters and tools for an optimal long term monitoring program, economically and technically viable 16

17 DGEP/SCR/RD Thank you!