Abrégé

A method of reducing sulfur compounds from an incoming gas stream, comprising: i. flowing the gas stream over a hydrolysis catalyst to convert COS and CS2 to H2S and reduce SO2 to elemental sulfur to form an effluent stream; ii. providing an acidic gas removal unit comprising an absorbent; iii. flowing said effluent stream over said absorbent to produce a stream free of acidic gases; iv. applying an acidic-gas desorption mode to said acidic-gas rich absorbent to produce an acidic gas stream; v. introducing oxygen to said acidic gas-rich stream; vi. providing a direct oxidation vessel containing catalyst suitable for catalyzing the oxidation of the H2S to sulfur wherein the temperature of the vessel is at or above the sulfur dew point at the reaction pressure, and flowing said acidic gas-rich stream over said catalyst to produce a processed stream having a reduced level of sulfur compounds.

Classes IPC  ?

• B01D 53/46 - Élimination des composants de structure définie
• B01D 53/86 - Procédés catalytiques

Abrégé

An in situ combustion process entailing the simultaneous production of liquids and combustion gases that combines fluid drive, gravity phase segregation and gravity drainage to produce hydrocarbons from a subterranean oil-bearing formation, comprising initially injecting a gas through a horizontal well placed high in the formation and producing combustion gas and oil through parallel and laterally offset horizontal wells that are placed low in the formation. wherein the reservoir exploitation proceeds with sequential conversion of production wells to injection wells in a line-drive mode of operation. The process may also be employed without in situ combustion, using instead a gaseous solvent or steam injection.

Classes IPC  ?

• E21B 43/30 - Disposition particulière des puits, p. ex. disposition rendant optimum l'espacement des puits
• E21B 43/24 - Procédés de récupération assistée pour l'extraction d'hydrocarbures utilisant la chaleur, p. ex. injection de vapeur

Abrégé

An in situ combustion process entailing the simultaneous production of oil and combustion gases that combines fluid drive, gravity phase segregation and gravity drainage to produce hydrocarbons from a subterranean oil-bearing formation, comprising initially injecting a gas through a pair of horizontal wells placed high in the formation and producing combustion gas and oil through parallel and laterally offset horizontal wells that are placed low in the formation intermediate the pair of horizontal wells placed high in the formation.

Classes IPC  ?

• E21B 43/243 - Combustion sur place
• E21B 43/24 - Procédés de récupération assistée pour l'extraction d'hydrocarbures utilisant la chaleur, p. ex. injection de vapeur
• E21B 43/30 - Disposition particulière des puits, p. ex. disposition rendant optimum l'espacement des puits

Abrégé

An method entailing the simultaneous production of oil and combustion gases that combines gravity phase segregation and gravity drainage to produce hydrocarbons from a subterranean oil-bearing formation, comprising initially injecting a fluid such as a solvent, steam, or an oxidizing gas through a pair of horizontal wells placed high in the formation and producing oil through a plurality of parallel lower horizontal wells situated low in the reservoir, each lower horizontal well perpendicularly disposed to said upper horizontal wells. In a preferred embodiment well liner segments in lower horizontal wells, which well liner segments are provided with apertures therein to allow oil to flow into said lower horizontal wells, at locations where an upper horizontal well traverses a lower horizontal well, possess no apertures to thereby prevent oxidizing gas injected in said upper horizontal wells from flowing directly into said lower horizontal wells at such point at which said lower wells are traversed by said upper wells.

Classes IPC  ?

• E21B 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
• E21B 43/10 - Mise en place de tubages, filtres ou crépines dans les puits
• E21B 43/24 - Procédés de récupération assistée pour l'extraction d'hydrocarbures utilisant la chaleur, p. ex. injection de vapeur
• E21B 43/243 - Combustion sur place

Abrégé

An in-situ combustion process which process does not employ one or more separate gas venting wells. At least one vertical production well having a substantially vertical portion extending downwardly into the reservoir and a horizontal leg portion extending horizontally outwardly therefrom completed relatively low in the reservoir is provided. At least one vertical oxidizing gas injection well, positioned above and in spaced relation to the horizontal well, is positioned laterally along the horizontal well approximately midsection thereof. Oxidizing gas is injected therein and combustion fronts are caused to progress outwardly from such injection well in mutually opposite directions along the horizontal well. Preferably a plurality of injection wells are provided along the direction of the horizontal well, and oxidizing gas is injected in each and combustion fronts caused to progress outwardly and in opposite directions from each, and oil is caused to drain down into the horizontal well, which oil along with hot combustion gases is produced to surface.

Classes IPC  ?

• E21B 43/243 - Combustion sur place
• E21B 43/28 - Dissolution de matières minérales autres que des hydrocarbures, p. ex. par un agent de lessivage alcalin ou acide

Abrégé

A well liner segment for use in hydrocarbon recovery processes. An elongate, typically cylindrical outer liner member, and an inner elongate liner member concentrically located therewithin is provided. Hydrocarbon upgrading catalyst is provided in the interstitial space between the two members. The outer liner members may be threadably coupled together. A slidable seal is provided between the outer liner and the inner liner to accommodated differential thermal growth between the two liners. A process for use of well liner segments having hydrocarbon upgrader catalyst pre- installed therein, is also provided, as is a method for manufacture of a well liner segment.

Classes IPC  ?

• E21B 43/08 - Tubes filtres ou crépines
• E21B 43/10 - Mise en place de tubages, filtres ou crépines dans les puits
• E21B 43/243 - Combustion sur place

Abrégé

A modified method of in situ recovery of hydrocarbon from an underground hydrocarbon-containing formation. An "L" shaped production well, having a vertical upper section, and a lower horizontally-extending leg which is positioned low in the hydrocarbon formation, is provided. The horizontal leg connects to the vertical section of the production well at a heel portion and has a toe portion at an opposite end thereof. An oxidizing gas is injected into the formation proximate the vertical section of the production well. A vertical combustion front is created which is caused to sweep outwardly therefrom and laterally within the formation above the horizontal leg, from the heel to the toe of the horizontal leg, causing hydrocarbons in the formation above the horizontal leg to be upgraded and liquify, and thereafter to drain downwardly into the horizontal leg which is permeable, where such liquified hydrocarbons are then delivered to surface via production tubing. A non-oxidizing gas is injected into the heel portion of the horizontal leg via injection tubing contained within the vertical section of the production well. Benefits of the modified method of in situ recovery include decreased costs and lessened environmental impact.

Classes IPC  ?

• E21B 43/243 - Combustion sur place