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8826985 Open hole frac system  
A fracturing operation is done in open hole without annular space isolation. The annular space is spanned by telescoping members that are located behind isolation valves. A given bank of...
8807213 Pressure limiting device for well perforation gun string  
A perforation gun. The perforation gun comprises a tool body, the tool body defining at least one shouldered hole wherein the shouldered hole comprises a hole through a wall of the tool body and a...
8672027 In situ fluid reservoir stimulation process  
A method for stimulating a hydrocarbon-containing formation that includes the steps of: introducing a heat source in the formation; heating a portion of liquid hydrocarbons in the formation to...
8544544 Forming oriented fissures in a subterranean target zone  
A system for forming a subterranean oriented fissure in a target zone by utilizing a connection between two well bores and a flexible linear cutting device, such as a segmented diamond wire saw, to...
8534350 RF fracturing to improve SAGD performance  
A method of producing heavy oil from a heavy oil formation with steam assisted gravity drainage. The method begins by drilling a borehole into a heavy oil formation comprising a steam barrier...
8336621 Energy efficient, low emissions shale oil recovery process  
A process for the energy efficient, environmentally friendly recovery of liquid and gaseous products from solid or semi-solid hydrocarbon resources, in particular, oil shale or tar sands. The...
8312924 Method and apparatus to treat a well with high energy density fluid  
The invention relates to methods and apparatuses for the subterranean injection of reactive substances like propellants into wellbores and subterranean reservoirs. These methods and apparatuses...
8302688 Method of optimizing wellbore perforations using underbalance pulsations  
A perforating system and method for use in a wellbore. In operation, the perforating system is disposed in the wellbore and used to form perforations in the wellbore. Thereafter, the perforating...
8302690 Method of drilling and opening reservoir using an oriented fissure to enhance hydrocarbon flow  
A system and method for increasing hydrocarbon production from a subsurface reservoir by utilizing an intersection of two well bores and a flexible linear cutting device, such as a segmented...
8261820 Drilling and opening reservoirs using an oriented fissure  
A system and method for increasing hydrocarbon production from a subsurface reservoir and/or sequestering waste material such as carbon dioxide by utilizing a connection between two well bores and...
8082105 Method and apparatus for measuring in-situ stress of rock using thermal crack  
Disclosed is a method and apparatus for measuring in-situ stress in rock using a thermal crack. The method involves forming a borehole, cooling a wall of the borehole, applying tensile thermal...
7913758 Oil well perforators and method of use  
A method for completing an oil and gas well completion is provided. The perforators (10, 11) may be selected from any known or commonly used perforators and are typically deployed in a perforation...
7662275 Methods of managing water in oil shale development  
The present disclosure relates to a system and method of providing water management and utilization during the process of dewatering and retorting of oil shale. More specifically, the process...
7647967 Drilling and opening reservoir using an oriented fissure to enhance hydrocarbon flow and method of making  
A system and method for increasing hydrocarbon production from a subsurface reservoir by utilizing an intersection of two well bores and a flexible linear cutting device, such as a segmented...
7543638 Low temperature oxidation for enhanced oil recovery  
Methods and systems for enhancing oil recovery are disclosed. A method for enhancing oil recovery in a formation includes placing a catalyst in a wellbore; and introducing an oxidizing agent into...
7520325 Enhanced hydrocarbon recovery by in situ combustion of oil sand formations  
The present invention is a method and apparatus for the enhanced recovery of petroleum fluids from the subsurface by in situ combustion of the hydrocarbon deposit, from injection of an oxygen rich...
7431083 Sub-surface coalbed methane well enhancement through rapid oxidation  
A method of stimulating production of coalbed methane involves providing a perforation charge comprising a standard charge portion and a charge additive able to produce localized temporary...
7431090 Methods and apparatus for multiple fracturing of subterranean formations  
The invention relates to methods and apparatus for creating multiple fractures in subterranean formations. The apparatus is a jetting tool having a plurality of sets of jetting nozzles so that the...
7051809 Burn assisted fracturing of underground coal bed  
A method for fracturing subterranean coal formations by injecting air into the formation, igniting the coal, driving the fire away from the wellbore by injecting a cooling media into the burning...
7048051 Recovery of products from oil shale  
A process and system for recovering hydrocarbonaceous products from in situ oil shale formations. A hole is drilled in the oil shale formation and a processing gas inlet conduit is positioned...
7025139 Method and operation of a well jet device inkwell testing and development and the well jet device for carrying out said method  
The invention relates to jet device used for extracting oil from wells. The inventive method consists in the following: a pump, a connecting and disconnecting unit, a valve unit, a packer and a...
6880635 In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio  
A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the...
6732796 In situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio  
A hydrocarbon containing formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be...
6460619 Method and apparatus for creation and isolation of multiple fracture zones in an earth formation  
Following fracturing operations in a first zone of a well bore traversing an earth formation, a sealing assembly is lowered into the well bore to isolate the first zone from the remainder of the...
6328104 Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking  
A process is disclosed for the in situ conversion and recovery of heavy crude oils and natural bitumens from subsurface formations using either a continuous operation with one or more vertical...
6016867 Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking  
A process is disclosed for the in situ conversion and recovery of heavy crude oils and natural bitumens from subsurface formations using either a continuous operation with one or more injection and...
5452763 Method and apparatus for generating gas in a drilled borehole  
The present apparatus and method utilizes a downhole electrolysis process implemented by means of an elongated gas generating apparatus containing an array of cascaded electrolysis cells...
5402846 Unique method of hydraulic fracturing  
An improved method for hydraulically fracturing a formation or reservoir where a thermo-setting gellable mixture is utilized. This thermo-setting mixture is foamed either at the surface or in situ...
5360068 Formation fracturing  
An oxygenated foam is injected into a hydrocarbon-bearing reservoir within a diatomite-containing subsurface formation to hydraulically form a fracture within the reservoir. Combustion is initiated...
5024487 Method of creating an underground batch retort complex  
Complexes of underground batch retorts, designed to duplicate surface retort prototypes proven successful in use, which may extend for miles on branch drifts intersecting central main drifts above...
4966416 Fragmentation of an underground ore body  
The invention provides a process for converting subterraneous ore overlain by an adjacent formation of porous rock into an enclosed zone of fragmented ore by first blasting a void space in the...
4895206 Pulsed in situ exothermic shock wave and retorting process for hydrocarbon recovery and detoxification of selected wastes  
An active combustion zone is established in situ within a permeable hydrocarbon formation. The permeable formation is periodically charged with a combustible gas, and is thereafter subjected to a...
4787449 Oil recovery process in subterranean formations  
Oil recovery from a subterranean, oil-containing formation having relatively highly permeable and/or fractured zones and relatively low permeability zones is improved by first injecting a...
4718489 Pressure-up/blowdown combustion - a channelled reservoir recovery process  
A cyclic process is described for recovering heavy oil from a reservoir having a network of generally linear, narrow permeable communication channels interconnecting outlying producing wells with...
4676313 Controlled reservoir production  
This invention contemplates a method of enhancing oil and/or gas recovery by properly drilling injection and production wells into a reservoir, incorporating flow control valves and sensors in both...
4662439 Method of underground conversion of coal  
A method of converting coal and other solid carbonaceous material to gaseous and liquid products by heating the coal in the presence of the gaseous effluent to a sufficient temperature for...
4648456 Method for acidizing siliceous formations  
A method for improving the permeability in a subterranean formation by acid treatment is disclosed. In this method, an aqueous acidizing solution containing hydrofluoric acid and excess fluoride is...
4648450 Method of producing synthesis gas by underground gasification of coal using specific well configuration  
Underground coal gasification process containing a novel system of injection and production wells. Specifically, the injection well is positioned at an angle with respect to horizontal of less than...
4637464 In situ retorting of oil shale with pulsed water purge  
Product yield and quality is increased during in situ retorting of oil shale by pulsed combustion in which the flow of feed gas to the flame front is intermittently stopped while continuously...
4610303 Method of underground gasification of a series of gently dipping and inclined coal seams  
A method of underground gasification of a series of gently dipping and inclined coal seams comprises the steps of determining the depth of occurrence and the thickness of each coal seam in said...
4595056 Method for fully retorting an in situ oil shale retort  
A method is provided for operating an in situ oil shale retort in a subterranean formation containing oil shale. The retort contains a fragmented permeable mass of formation particles containing...
4585063 Oil shale retorting and retort water purification process  
An oil shale process is provided to retort oil shale and purify oil shale retort water. In the process, raw oil shale is retorted in an in situ underground retort or in an above ground retort to...
4573531 Method of underground gasification of coal seam  
A method of underground gasification of a coal seam comprises the steps of opening it by drilling injection and production wells, interconnecting said wells, setting the coal afire and gasifying...
4560205 Method for control of geometry of fragmented mass in an situ oil shale retort  
A method for forming an in situ oil shale retort in a subterranean formation containing oil shale is provided. The in situ retort contains a fragmented permeable mass of formation particles within...
4552214 Pulsed in situ retorting in an array of oil shale retorts  
Greater product yield and quality and continuous upgrading of shale oil with hydrogen-rich, purge mode off gases is attained by pulsing in situ retorts at different phases and intervals. In the...
4552409 In situ oil shale retort with controlled permeability for uniform flow  
An in situ oil shale retort containing a fragmented permeable mass of formation particles having a generally uniform permeability across horizontal cross-sections of the retort is provided. To form...
4545622 Method of rubblization for in-situ oil shale processing  
A method that produces a uniformly rubblized oil shale bed of desirable porosity for underground, in-situ heat extraction of oil. Rubblization is the generation of rubble of various sized...
4533181 Method for forming uniform flow rubble bed  
An in situ oil shale retort containing a fragmented permeable mass of formation particles having a generally uniform permeability across horizontal cross-sections of the retort is provided. To form...
4532991 Pulsed retorting with continuous shale oil upgrading  
One or more in situ oil shale retorts are alternately operated in a combustion mode and a purge mode with a steam or water purge to produce a greater yield of shale oil. Hydrogen-rich off gases...
4531783 Stability control in underground workings adjacent an in situ oil shale retort  
In situ oil shale retorts are formed in spaced-apart rows, with adjacent rows of such retorts being separated by load-bearing inter-retort pillars of unfragmented formation sufficiently strong for...
Matches 1 - 50 out of 310 1 2 3 4 5 6 7 >