Case StudiesMicroseismic monitoring to optimize waterflood injectionsOctober 2, 2008 - 11:20am — danaAs the oil and gas industry continues the trend towards instrumented oilfields and smart well completions, more and more operators require real-time information on geomechanical processes taking place within the reservoir, in the areas remote from the actual wellbores. Passive monitoring of acoustic emissions (microseismicity) associated with stress changes within and around the reservoir can also be used to image the reservoir’s dynamic state, providing operators with real-time feedback of the reservoir’s response to EOR activities, including waterflooding or fluid injection. Microseismic monitoring of well casing and caprock integrity during Cyclic Steam Stimulation in Northern AlbertaOctober 2, 2008 - 10:37am — danaThe Cold Lake Oilsands deposits lie in Northern Alberta, near the border of Saskatchewan. The bitumen is located about 450 meters from the surface in the Clearwater sands and is overlain by the Colorado Shale and Grand Rapids formations. The Cold Lake area is home to many oil producers, including 2 major companies, one of whom operates the one of the largest in-situ thermal recovery operations in the world. Microseismic monitoring of a CO2 sequestration projectOctober 2, 2008 - 10:31am — danaThe Midwest Regional Carbon Sequestration Partnership (MRCSP) is one of seven nationwide partnerships formed by the U.S. Department of Energy (DOE) to help develop the technology, infrastructure, and regulations to implement large-scale CO2 sequestration in different regions and geologic formations within the U.S. The MRCSP encompasses eight states (Indiana, Kentucky, Maryland, Michigan, New York, Ohio, Pennsylvania and West Virginia), and is formed from a variety of stakeholders including research, energy industry, government and non-government organizations. Microseismic monitoring of a thermal steam injection in a heavy oil reservoir in Northwestern AlbertaOctober 2, 2008 - 11:15am — danaThermal recovery methods are used to produce the heavy oil (bitumen) located in a 30 meter thick sand layer in the Peace River fields of northwestern Alberta. An estimated 8-10 million barrels of bitumen lie in place in this field, at a reservoir depth of approximately 600 meters. Underground coal mining in Anhui Province, ChinaOctober 22, 2009 - 9:05am — KatieCurrently operated by the Huainan Coal Mining Group, the Xin Zhuang Zi and Wan Fang Gun coal mines in Huainan, China recently incorporated ESG microseismic monitoring systems into their operations. These systems are used to assess the microseismic activity associated with underground longwall coal excavation, and play a significant role in the management of hazard and risk associated with coal mine operation. Background Microseismic analysis to identify the caving front associated with cave mining operations in New South WalesOctober 22, 2009 - 8:38am — KatieOperated by Newcrest Mining Ltd., the Ridgeway gold mine uses a block-caving method to extract a gold-copper deposit in central New South Wales, Australia. An ESG microseismic system was implemented to compliment existing geomechanical monitoring tools, to study the ability of microseismic analysis to characterize the cave front over time. Background Use of a destress slot for underground gold mining in Northern OntarioOctober 22, 2009 - 9:36am — KatieOperated by the Newmont Mining Corporation until 2006, the Golden Giant gold mine was located in the Hemlo gold deposit approximately 40 km east of Marathon Ontario. Situated between the Williams and David Bell mines, the Golden Giant mine produced over 6 million ounces of gold over 21 years of operation. Background Rockburst re-entry protocol at a deep underground Nickel mine in Sudbury, OntarioOctober 23, 2009 - 9:00am — KatieCurrently operated by Vale Inco Limited, Creighton nickel mine in Sudbury, Ontario is Canada’s deepest mine. In operation since 1901, Creighton mine has a long history of rockburst events due to the geological structure of the mine. The microseismic monitoring system was expanded in 1999 to monitor mine-wide operations and provide insight into rockburst re-entry conditions, thus playing a significant role in the management of hazard and risk associated with deep mine operation. Background Controlled Solution Salt Mine Collapse in RomaniaOctober 27, 2009 - 8:46am — KatieThe Ocnele Mari salt deposit located in the sub-Carpathian hills of southern Romania actively extracted salt through dissolution in four fields beginning in 1954. Following the removal of 13.5 million tones of salt from Field II, operations were permanently halted after a major collapse in 1991. These events highlighted the risks associated with the presence of a dissolution chamber near to a densely populated area and provided an opportunity to safely monitor corrective actions to reduce risks using a microseismic system. Background Sub-level caving operations for gold extraction in the Abitibi region of QuebecOctober 30, 2009 - 10:29am — KatieOperated by Agnico Eagle Ltd., the Goldex mine uses a sub-level caving method employing three large stopes and long blast holes to extract gold particles contained within quartz-tourmaline veins. The site is located near Val-d’Or in the Abitibi region of Northwestern Quebec, Canada and has been in commercial production since mid-2008. Background
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