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Thermal Recovery of Oil and Bitumen Roger M. Butler
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Vast stretches of Canada's boreal forests cover a mixture of clay, sand, water, and bitumen – a heavy, black viscous oil. Taking just those that relate to oil sand production roughly 70% plan on using thermal methods to recover deeper oil (mainly SAGD, though there are small amounts of THAI, cyclic steam and electrothermal). This distinguishes in situ recovery from surface mining, which requires removing topsoil and other overburden and Another common form of thermal recovery is cyclic steam stimulation (CSS). Which breaks the rock into small fragments. These fragments (with waste rock largely removed) are then mixed with hot water and pumped to large tanks at the primary upgrader, where the sand, water, and bitumen are separated. With some experts predicting peak oil as early as 2030, there is more and more interest in so called "unconventional resources" such as heavy oil and bitumen. In situ oil sands production means extracting bitumen from underground by drilling wells into the reservoir, as with conventional oil and natural gas production. To even access these deposits, the forest must first be drained of its water, and then clear D. Method of in-situ recovery of viscous oils or bitumen utilizing a thermal recovery fluid and carbon dioxide. Viscosity is a major obstacle in the recovery of low API gravity oil resources from heavy oil and bitumen reservoirs. Over the past year Excelsior Energy Limited has investigated various bitumen recovery mechanisms that could potentially reduce the large requirements for capital, fuel gas and process water associated with thermal recovery. STEAM ASSISTED GRAVITY DRAINGE (SAGD) The most promising thermal recovery technology is the Steam Assisted Gravity Drainage (SAGD) process. Baytex's current asset portfolio includes thermal recovery projects at Seal in the Peace River Oil Sands and at Kerrobert in southwest Saskatchewan. Regulatory approval has been received for the construction and operation of a two-stage bitumen recovery scheme using steam-assisted gravity drainage. Baytex plans a pilot study in 2013. Patent #: Gaseous and solvent additives for steam injection for thermal recovery of bitumen from tar sands. There are currently two primary different types of processes for in situ—i. If successful, a commercial project would begin in 2014 with expected production in 2016. Jaques – California heavy oil from thermal recovery is bad, unsustainable and is as well prohibited by the same legislation for use by the US government Mr. Technology in the recovery of such reserves is advancing rapidly and suddenly this huge country with produced oil rates and reduced production costs. , underground, devoid of mining—thermal recovery of bitumen and heavy oil: steam injection and combustion.