2009
DOI: 10.2118/110634-pa
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Monitoring SAGD Steam Injection Using Microseismicity and Tiltmeters

Abstract: A combination of microseismic and surface-deformation monitoring with an array of tiltmeters was used to monitor the warm-up phase of a steam-assisted-gravity-drainage (SAGD) well pair. A sequence of microseismic events was recorded with signal characteristics that suggested deformation associated with thermal expansion of the wellbore, in addition to events apparently associated with induced fracturing in the reservoir. Integration of the microseismic data with volumetric strain, inverted from the measured su… Show more

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Cited by 16 publications
(6 citation statements)
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“…For thermal recovery projects, permanent downhole geophone arrays are used to monitor steam injection (Maxwell et al, 2009) and overburden deformation and casing integrity (Smith et al, 2006). For thermal recovery projects, permanent downhole geophone arrays are used to monitor steam injection (Maxwell et al, 2009) and overburden deformation and casing integrity (Smith et al, 2006).…”
Section: Passive Microseismic Monitoringmentioning
confidence: 99%
“…For thermal recovery projects, permanent downhole geophone arrays are used to monitor steam injection (Maxwell et al, 2009) and overburden deformation and casing integrity (Smith et al, 2006). For thermal recovery projects, permanent downhole geophone arrays are used to monitor steam injection (Maxwell et al, 2009) and overburden deformation and casing integrity (Smith et al, 2006).…”
Section: Passive Microseismic Monitoringmentioning
confidence: 99%
“…6 First, the distribution of volume changes in reservoir blocks was found by inverting the surface tilt measurements. A detailed description about the monitoring project could be found from paper SPE 110634.…”
Section: Application and Discussionmentioning
confidence: 99%
“…Then we will show how the induced stress is calculated and apply it to a field case study, where arrays of surface tiltmeters and downhole microseismic sensors were installed to monitor the warming up phase of a SAGD operation 6 . Then we will show how the induced stress is calculated and apply it to a field case study, where arrays of surface tiltmeters and downhole microseismic sensors were installed to monitor the warming up phase of a SAGD operation 6 .…”
Section: Introductionmentioning
confidence: 99%
“…They investigated different variables for operating strategy development including; steam circulation rate and pressure, the magnitude and timing of pressure differential implementation between the injector and producer, and optimum timing for SAGD conversion. Maxwell et al (2007) used a combination of microseismic and surface deformation monitoring with an array of tiltmeters to monitor warm-up phase of SAGD well pair. For the case studied, they reported a possibility of fracture network creation which is then filled with steam at later stages.…”
Section: Sagd Operationmentioning
confidence: 99%