3783 results about "Thermal recovery" patented technology

A combination of SAGD with cogeneration technology for exploiting shallow heavy oil and bitumen reservoirs under primary, secondary and tertiary thermal recovery. Superheated steam is generated by the heat recovery from the exhaust of an above-ground hydrocarbon powered turbine driven electric generator cogeneration plant and is injected through well bores into the hydrocarbon bearing reservoir that is traversed by at least one horizontal producing well bore and one injection well bore to heat the reservoir formation and to induce gravity drainage of the hydrocarbons and allowing their recovery from the horizontal producing well bore. Electrical power that is generated is sold to the electric grid and can be used to offset the fuel costs for the above ground hydrocarbon turbine-driven elector generators.

A method of controlling operation of a train (T) for passage of the train through a tunnel. The train has a plurality of locomotives (L1-Ln) pulling the train. The position of the lead locomotive relative to the tunnel entrance is determined, as is the amount of time before the train enters the tunnel. Each locomotive is separately configured for passage through the tunnel as a function of performance characteristics of the locomotive and the locomotive's current operating status, as the train approaches the tunnel. Once the train enters the tunnel, the performance characteristics of each locomotive are continually monitored. The performance requirements for one or more of the locomotives are then dynamically changed as a function of conditions within the tunnel and the current performance characteristics of each locomotive. This is done to maintain a sufficient combined performance capability from the locomotives to move the train through the tunnel. Upon exiting the tunnel, the locomotives' full operating capabilities are quickly restored by enhancing their thermal recoveries.

A method of forming a pyrolysed biocarbon from a pyrolyzable organic material is delineated. The method involves the conversion of pyrolyzable organic materials to biocarbon for subsequent use. A carbonization circuit is employed with individual feedstock segments being advanced through the circuit. The method facilitates user manipulation of rate of advancement of the feedstock through the circuit, selective collation of volatiles from pyrolyzing feedstock, selective exposure of predetermined feedstock segments to collated volatiles as well as thermal recovery and redistribution as desired by the user. This results in the capacity for a customizable biocarbon product, the latter being an auxiliary feature of the methodology.

The invention provides a cement slurry with long-term-integrity cement sheath for a heavy-oil thermal-recovery well. The cement slurry comprises, by weight, 100 parts of thermally responsive cement, 25 to 65 parts of water and 0.2 to 8 parts of a cement slurry aid. The thermally responsive cement comprises 30 to 60 parts of oil well cement, 10 to 20 parts of active silicon powder, 0 to 10 parts of hollow glass beads and 10 to 50 parts of a thermally responsive composite material. The thermally responsive composite material comprises 20 to 30 parts of clay mineral, 10 to 20 parts of fly ash and/or vulcanic ash, 5 to 20 parts of rubber powder and/or latex powder, 3 to 10 parts of carbon fiber, 10 to 15 parts of nanometer silicon dioxide, 5 to 10 parts of calcined magnesia, 10 to 20 parts of ultrafine superfine slag powder and 5 to 10 parts of inorganic whiskers. The cement slurry provided by the invention can solidify at normal temperature; and set cement can resist long-term high temperature, and the mechanical properties and thermal properties of the set cement in a high temperature environment are integrally adaptive to strata and casing pipes.

In connection with thermal recovery projects, a system determines temperature gradients for a heat affected zone associated with a subterranean hydrocarbon reservoir. An exemplary system includes a plurality of temperature sensors distributed in the wellbore at least partially along the heat affected zone. A downhole processor positioned proximate and substantially outside of the heat affected zone receives and digitizes the temperature measurements. A data link such as a data cable coupled to the downhole processor conveys the temperature measurements to a surface interface.

The present invention relates to a thermochemistry assistant strengthening steam drive method for thermal recovery of horizontal well using oil-soluble compound viscosity reducer and carbon dioxide. The technique scheme is that: Drilling an horizontal well below the heavy oil reservoir layer, injecting periodically oil-soluble compound viscosity reducer, carbon dioxide liquid and steam in slug injection forms to horizontal well, after shutting in well and opening to blow, continuous oil extraction is operated by the inner lower pump in horizontal well. The present invention can reduce base oil viscosity of super heavy oil reservoir in lower or middle deep layers greatly, reduce steam injection pressure greatly, enhance steam hot wave and range, and enhance period exploitation effect. The scene experiment proves that the average period oil-steam ratio reaches to 0.75, average period oil production is 1800t, the room experiment proves that developing thermochemistry assistant strengthening steam drive in the late period of middle deep layer of super heavy oil reservoir, the final oil reservoir recovery can reach about 40%.

The invention relates to a blast furnace slag heat recycle system and relative production, wherein it is formed by cooling-breaking, gas-slag heat exchanger, and left-heat boiler units; the slag outlet has cooling-braking unit which will cool the slag to the solidify point 1200-1300Deg. C, to be broken into the slag particles whose diameter is less than 100mm; the transmitter is connected to the gas-slag heat exchanger to heat the air to 700-800Deg. C; the slag will be cooled under 150Deg. C; the heated air will be transmitted to the left-heat boiler; the water of heating tube of boiler will adsorb the heat of gas, to generate the steam whose pressure at 0.3-0.4MPa and temperature at 260-350Deg. C. The invention can improve the energy recycle efficiency more than 70%, to reduce the energy consumption of steel production, reduce the consumption of cooling water, and reduce the environment pollution.

In an exhaust heat recovery system, electric power generation efficiency of a thermoelectric conversion element can be improved, and warming-up of a catalyst can be completed early, without using a complicated device. The exhaust heat recovery system according to the invention includes an exhaust pipe in which exhaust gas discharged from an internal combustion engine flows; a catalyst which purifies the exhaust gas; a heat recovery portion which is fitted to the exhaust pipe, and which recovers heat contained in the exhaust gas; a thermoelectric conversion element which generates electric power using thermoelectric conversion; and a heat pipe which connects the heat recovery portion to the thermoelectric conversion element, and which transfers the heat recovered in the heat recovery portion to the thermoelectric conversion element. An operation starting temperature of the heat pipe is set so as to be higher than an activation temperature of the catalyst.

A variety of methods for thermal recovery of natural gas and bitumen from a formation containing the latter. In general, the methods incorporate a series of existing, but previously uncombined technologies. A modified flue gas from the steam generators conventionally used in a SAGD recovery operation is injected into the formation to enhance recovery with the produced fluids, natural gas, bitumen, inter alia are further processed. The injection of the flue gas conveniently is disposed of and further acts to repressurize the formation which otherwise becomes depressurized when depleted of natural gas. Accordingly, environmental and economic advantages are realized with the methodology.

The invention relates to a new coalbed gas thermal production process which is characterized in that full hot coke is arranged on the lower part of a coalbed gas production well or a gasification well, a gasification agent is pressed in so as to ignite a hole bottom coalbed; and the heat released from the combustion of part of the coalbed can heat up the adjacent coalbed, and improve the analysis capability, permeability coefficient and osmotic pressure of the coalbed, thereby improving the gas yield of the coalbed.

The invention relates to a high-precision constant-temperature and humidity air conditioner operated in a wide temperature range. The air conditioner comprises an outdoor machine and an indoor machine, wherein the outdoor machine is provided with a condenser and a condensing fan; the indoor machine comprises an evaporator, a thermal recovery exchanger, an electric heater, a humidifier and a blower; and a compressor is formed by connecting in parallel a constant-frequency compressor and a variable-frequency compressor (or a digital scroll compressor) and is arranged in the indoor machine. As the system adopts frequency conversion technology or digital vortex technology and electronic expansion valve technology and unique classified evaporator control, condenser fan frequency-conversion control technology and evaporator frostless structural design, the air condition broadens the use environment range, indoor temperature control environment (between 7 and 30 DEG C) and relative humidity control environment (between 35 and 70 percent RH), can be reliably operated in the outdoor high-temperature environment of 45 DEG C, also improves the controlling precision of indoor temperature and humidity, and is applicable to places with severe requirements on temperature and humidity and large environmental temperature change.

The waste heat recovery system includes a Rankine cycle device in which working fluid circulates through a pump, a boiler, an expander and then through a heat exchanging device, heat exchange occurs in the boiler between the working fluid and intake fluid that is introduced into an internal combustion engine while being cooled. The heat exchanging device includes a condenser condensing the working fluid, a receiver connected downstream of the condenser and storing liquid-phase working fluid, a subcooler connected downstream of the receiver and subcooling the liquid-phase working fluid, and a selector device serving to change the ratio of the condenser to the subcooler. The waste heat recovery system further includes a determination device for determining required cooling load for the intake fluid, and a controller for controlling the selector device depending on the required cooling load determined by the determination device.

The invention relates to the technical field of heavy oil recovery, in particular to a foam agent system used for switching water drive into steam drive of a heavy oil reservoir or steam huff and puff to improve the oil recovery efficiency. According to the technical scheme, the temperature-resistant and salt-tolerant foaming agent system for thermal recovery of the heavy oil reservoir is characterized by comprising a foaming agent base, a foam stabilizer, a foam fixing agent, a foam promoter, an alkali substance, inorganic salt and a solvent. The foaming agent system can resist the temperature of 350 DEG C and has good thermal stability and better foamability; the foaming agent base in the system is lower than the critical micelle concentration and can produce more foam, the apparent viscosity is substantially increased, and the cost is saved; the foaming agent system has better solubility, causes little damage to formation and is environment-friendly.

The invention discloses a graphene/thermoplastic polyurethane composite and a preparation method and application thereof. The improved Hummers method is adopted to prepare graphene oxide which is dispersed in DMF to be subjected to ultrasonic treatment, TPU (Thermoplastic polyurethanes) swollen in DMF is poured in, and the solution coating film-forming process is adopted to prepare a GO (Graphene Oxide)/TPU composite film which is subjected to in-situ thermal recovery treatment for 2 h at 200 DEG C to prepare the graphene/thermoplastic polyurethane composite. The prepared graphene/thermoplastic polyurethane composite has the excellent electrical property, is uniform in filler dispersion, can be used for preparing TPU medical cushions, TPU biogas storage bags, TPU wading products and TPU water and oil storage bags, and can also be used in the field demanding relatively much on the obstructing and antistatic performance of materials.

A combined cycle process that includes gas turbines, a steam turbine train, a heat recovery unit, and a gasification unit that produces low or mid BTU fuel gas from coal, lignite, coke, biomass, or other suitable hydrocarbon containing material wherein the fuel gas is burned in the heat recovery unit at one or more points to increase steam rate to the steam turbine train.

The fuel gas injection flow rates into the heat recovery unit are controlled to avoid exceeding peak temperatures in the heat recovery unit of about 2500 F.

Optionally, the fuel gas from the gasification unit is cooled by transferring sensible heat to condensate from the steam turbine train to convert the condensate to high pressure steam for driving the steam turbine train.

Optionally, a steam boiler unit is integrated into the combined cycle process to raise additional high pressure steam for the steam turbine train. The steam boiler feed water is condensate from the steam turbine train. The steam boiler produces saturated high pressure steam that is superheated in the heat recovery unit.

A heat recovery and pollution abatement process with stackless operation for removing the products of combustion from hot boiler flue gas (45) comprising the steps of passing said hot boiler flue gas through a cloud of steam or mist (46), cooling the hot moist flue gas and recovering the heat therefrom (47), passing the partly cooled hot moist flue gas through a second cloud of mist comprised of cold water to total saturation (48), collecting the resulting stream of acid water, forcing the treated flue gas, mixing the treated flue gas with outside air, directing the forced treated air to atmosphere, shutting off the process in the absence of boiler flue gas.

The invention relates to a thermal recovery technology of a multielement thermal fluid of a thickened oil well, comprising the step of injecting a multielement thermal fluid and annular injection nitrogen into an oil layer together. The invention relates to a thermal recovery technology of a multielement thermal fluid of an offshore thickened oil well.

A waste heat recovery system comprising ducting to which hot gas is communicated, means to supply lower temperature diluent gas to the ducting, to mix with the hot gas, and produce a reduced temperature mixed gas stream, a vaporizer in communication with the ducting, to receive the stream and to transfer heat from the stream to a working fluid in the vaporizer to vaporize said fluid, and a blower operating to displace the stream through the vaporizer.

The invention relates to a conveyor dishwasher having at least one washing zone (3, 4), at least one rinsing zone (5, 6), a suction-extraction location (23) and/or a heat-recovery device (11). The dishwasher also comprises at least one drying zone (7). The flow direction (30) of the exhaust air within the dishwasher runs from the outlet (8) to the inlet (1), counter to the transporting direction (9) of the wash ware (10) through the dishwasher, the suction-extraction location (23) being arranged in the region of the inlet (1) of the dishwasher, and volumes of air (28, 33) which are withdrawn from the drying zone (7) being dependent on positions (34, 35) of exit nozzles (26) for hot air within the drying zone (7).