28 Aug 2014 pronounced effect on flotation of low grade oil shale; Almost 95% of ash forming minerals were removed to enrich oil shale concentrate by factor of 2-4 with 60-95 % kerogen recovery and approximately 50-300 % increase in from oil shale and the weight loss of oil shale, so the MCR test can facilitate the rapid screening of a large number of oil shale c) First 10 min. Table 2 Recovery of Oil Shales by Fischer Assay. Sample. Recovery [wt%]. Oil. Water. Spent shale. Underlying most definitions of oil shale is its potential for the economic recovery of energy, including shale oil and combustible gas, as well as a number of byproducts. A deposit of oil shale having economic potential is generally one that is at 6 Dec 2019 The pros and cons of enhanced oil recovery. EOR can recover up to 60 percent of the oil in a reservoir. much in EOR discussions, the “next frontier” for the oil industry is to use CO2 to boost unconventional shale oil and Using conventional gas processing technology, Enefit is developing a gasoline recovery unit to recover six tons per hour of shale gasoline from semi-coke gas streams from the oil plant. Hydrotreating Shale Gasoline. Shale oil refining complex The project goal is to evaluate the oil recovery potential of cyclic gas injection. Detailed project objectives include: Studying the dominant mechanisms of gas injection in shale reservoirs (e.g., pressure maintenance or miscibility); Finding the lies in in situ processes for recovery of the resource [3], [4], [28], [34], [46], [47]. In these processes the oil shale bed is fractured or rubblized [13], a flame front is initiated and driven through the shale deposit, as oil is formed through thermal.
The oil recovery in oil-bearing shale reservoirs like the Bakken formation is believed to be less than 10%. Clark (2009) showed that the results from several methods indicate that the most likely value for recovery factor in the Bakken shale is approximately 7%. US3437378A US617562A US3437378DA US3437378A US 3437378 A US3437378 A US 3437378A US 617562 A US617562 A US 617562A US 3437378D A US3437378D A US 3437378DA US 3437378 A US3437378 A US 3437378A Authority US United States Prior art keywords shale tunnel oil mining formation Prior art date 1967-02-21 Legal status (The legal status is an assumption and is not a legal conclusion. I claim: 1. A process of recovering petroleum products from oil shale in situ, 2. The procescs of claim 1, including pulsating the gas into intimate contact with the shale. 3. The process of claim 1, including separating decomposition vapors from 4. The process of claim 2, including Shale oil and gas is defined as oil and natural gas, respectfully from a fine grained rock known as shale. The shale acts as the source, reservoir and seal for the oil and natural gas. Wells are primarily horizontal and are stimulated to produce oil and gas by hydraulic fracturing.
Underlying most definitions of oil shale is its potential for the economic recovery of energy, including shale oil and combustible gas, as well as a number of byproducts. A deposit of oil shale having economic potential is generally one that is at or near enough to the surface to be developed by open-pit or conventional underground mining or by in-situ methods. recover natural gas and oil from low-permeability geologic plays—particularly, shale plays. Application of fracturing techniques to stimulate oil and gas production began to grow rapidly in the 1950s, although experimentation dates back to the 19th century. During primary recovery, the natural pressure of the reservoir or gravity drive oil into the wellbore, combined with artificial lift techniques (such as pumps) which bring the oil to the surface. But only about 10 percent of a reservoir's original oil in place is typically produced during primary recovery. Key Takeaways. Hydraulic fracturing, or fracking, opened up more natural gas for production, but the technology added costs to the oil extraction process. Shale oil costs more than conventional oil to extract, ranging from a cost-per-barrel of production from as low as $40 to over $90 a barrel. To recover this volume of oil or gas in the past many vertical wells would have been drilled from the surface requiring the use of more surface land. In order to access the oil or natural gas trapped within the shale, the formation is hydraulically fractured (see our hydraulic stimulation section). This technology could help unlock 800 billion barrels of recoverable oil from oil shale in the USA. For tarsands and heavy oil the process could yield 10-15 barrels per barrel consumed (EROEI 10-15). Hat tip to Al Fin. Brian Wang is a prolific business-oriented writer of emerging and disruptive technologies.
Recovery of oil from oil shale Minimum organic requirement As is stated above ( see Organic content ), the organic matter present in oil shale is principally kerogen ; no oil and little extractable bitumen is naturally present in oil shale. The composition of the oil shale may lend added value to the extraction process through the recovery of by-products, including ammonia, sulfur, aromatic compounds, pitch, asphalt, and waxes. [11] Heating the oil shale to pyrolysis temperature and completing the endothermic kerogen decomposition reactions require a source of energy. The in situ process involves drilling into oil shale rock and blasting the area to form fractures. After this, two sets of wells are sunk into the rocks; one set used to inject a hot medium into the shale, the other set brings the oil to the surface. Surface retorting requires the oil shale rock to be mined by open pit or underground methods. The reactivity of Jordan oil shale (organic content 24.2%, db) was investigated at temperatures in the range 300-425°C, in the presence of varying amounts of water, in varying gas environments (N 2 , CO, H 2 ) and, in some cases, with additives (catalysts for the water gas shift reaction), but without added organic solvent. As can be seen, our 15-21-month estimate isn't abnormal for a recovery in oil prices. Most recoveries have been around that. It's also worth noting a shorter decline tends to lead to a shorter Shale oil is a high-quality crude oil that lies between layers of shale rock, impermeable mudstone, or siltstone. Oil companies produce shale oil by fracturing the layers of rock that contain the layers of oil. Don't confuse shale oil with oil shale. That is rock suffused with kerogen, a precursor to oil.
Understanding physics could lead to big gains in shale oil recovery. Date: January 15, 2019; Source: Penn State; Summary: Oil companies are missing out on vast sums of recoverable oil in unconventional reservoirs, according to experts. 8 Apr 2019 Summary During the past decade, enhanced oil recovery (EOR) by CO2 in shale oils has received substantial attention. In shale oil reservoirs, CO2 diffusion into the resident oil has been considered to be the dominant 25 Sep 2006 Oil shale bed. Chevron Corporation and Los Alamos National Laboratory (LANL) have created a joint research project to improve the recovery of hydrocarbons trapped in oil shales and slow-flowing oil formations. The goal of 28 Aug 2014 pronounced effect on flotation of low grade oil shale; Almost 95% of ash forming minerals were removed to enrich oil shale concentrate by factor of 2-4 with 60-95 % kerogen recovery and approximately 50-300 % increase in