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Thermal Recovery of Oil and Bitumen Roger M. Butler
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Can oil sands/heavy oil/bitumen be mined or recovered through steam injection in an environmentally sustainable way that does not compromise valuable freshwater supplies? Improving Energy Efficiency in Thermal Oil Recovery. Slotted liners that hang on a thermal packer in 95⁄8-in. It describes a method of thermal bitumen recovery called wedge wells. Thermal extraction is a much more environmentally friendly process than other energy extraction methods; for example, 98% of the water used by Connacher to extract their oil is recycled. In the 1980s, the petroleum and bitumen sector was still employing 10% of the Albanian workforce, but its share of the national industrial production declined from 8.1% in 1980 to 5% in 1985, and even less than that at the end of the decade. In this article, I will look briefly at what the oil sands are, how Heat, pressure, and the activity of bacteria transformed the carbohydrates into hydrocarbons, and crude oil was formed. Improving Energy Efficiency in Thermal Oil Recovery Surface FacilitiesN.M. Before we delve into various environmental issues including the social impact of the oil sands development, it is important to understand the properties of oil sands and how bitumen is recovered using different technologies. In the SAGD well laterals, Cenovus runs 7-in. 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. Costs for recovering bitumen with in situ methods continue to decline, and new technologies are bound to reduce costs further, according to Harbir Chhina, executive vice-president enhanced oil development and new resource plays for Cenovus Energy Inc., Calgary. The onset that the 'tar sands' classification is scientifically incorrect , as he explains that “[tar sands] terminology should be avoided because oil sands are neither tar nor sands…tar is not a raw material; instead, it is a residual product that remains after severe thermal cracking of heavy oil”. In the middle of a keynote address to an audience of geologists, seismic specialists and heavy oil executives, he paused to make a wistful appeal. Low impact energy recovery requires massive capital and a willingness to take on high level of risk. Building sustainable operations for the recovery of oil and bitumen requires leading edge facilities and continual adaptation of technologies.