50 results about "Natural gas" patented technology

The present invention provides a method for recovering a natural gas contaminated with high levels of carbon dioxide. A gas containing methane and carbon dioxide is extracted from a reservoir containing natural gas, where carbon dioxide comprises at least 50 vol. % of the extracted gas. The extracted gas is oxidized with an oxygen containing gas in the presence of a partial oxidation catalyst at a temperature of less than 600° C. to produce an oxidation product gas containing hydrogen, carbon monoxide, and carbon dioxide. The oxidation product gas is then utilized to produce a liquid hydrocarbon or a liquid hydrocarbon oxygenate.

A water evaporation system and method for disposing of excess water left over from oil or gas drilling, fracturing, and production operations and from other wastewater producing operations. The system comprises a pumping system for pumping the wastewater from a pond through a filtration system and then to one or more nozzle arrays attached to cables suspended over the pond.

The invention belongs to the technical field of marine gas hydrate resource development project, and particularly relates to a test method for the transport law of hydrate layer output fine sand in a gravel layer and a test device thereof. A simulated pack stratum sand sub-tube and a simulated pack gravel layer sub-tube are adopted to be connected through a quick connector to form a sand pack model for testing. A shunting steel block is installed at the inlet end, and an online laser particle analyzer and an electronic scale are connected at the outlet end through a porous mesh board. Sampling holes and pressure measurement holes are relatively arranged on the sand pack model. A differential pressure gauge is installed between the two adjacent pressure measurement holes, and all the hardware equipment is connected with a data acquisition and processing module. The change law of the output and the output particle size of the stratum fine sand under the gravel pack condition can be monitored in real time so that the test technology and experimental data support can be provided for the research of the transport mechanism of the fine sand in the pack gravel layer induced by hydrate depressurizing exploitation, and the test method and the test device have an important reference meaning for designing reasonable gravel pack parameters and extending trial exploitation duration.

The invention discloses a natural gas pressure regulator station system. The natural gas pressure regulator station system is characterized by comprising an inlet insulation and fire alarm cut-off unit, a cyclone separation unit, a filter separation unit, a measuring unit, a pressure regulating unit and an outlet unit, which are sequentially connected together. A pressure regulator station is far away from a gas user, a front module of the natural gas pressure regulator station system is arranged in front of the gas user, the front module comprises a front measuring unit, a front fine filter unit and a front insulation and fire alarm cut-off unit. The natural gas pressure regulator station system has advantages that the investment and operation cost can be reduced, and the stability and safety for supplying the natural gas can be improved; a complete auxiliary facility is also provided on the basis of a heating unit and a front unit for the gas consumption characteristics and upstream gas source parameters of the gas user, so that the safety and stability of the pressure regulator station system in operation can be guaranteed, and the requirements of the gas user on high natural gas parameter accuracy and high response speed can be met.

The invention discloses an ignition system of an energy-saving eternal lamp utilizing exhaust gas. The ignition system comprises eternal lamp ignition units and natural gas sources which are connected with the ignition unit, wherein the eternal lamp ignition unit comprises an eternal lamp igniting device; each eternal lamp igniting device comprises an eternal lamp loop and an ignition loop; the multi-gas-source eternal lamp ignition system is characterized by also comprising a flammable exhaust gas source, a liquid separation tank and a classified water sealed tank, wherein the flammable exhaust gas source is connected with the liquid separation tank and then connected with the classified water sealed tank; the eternal lamp ignition unit comprises at least two sets of eternal lamp igniting devices; the classified water sealed tank is connected with the ignition loop of at least one set of eternal lamp igniting device; the natural gas sources are connected with the ignition loops of all sets of eternal lamp igniting devices in the eternal lamp ignition unit; the flammable exhaust gas source is connected in parallel with the natural gas sources. The ignition system disclosed by the invention can be used for igniting an eternal lamp by utilizing exhaust gas, and also utilizing the gas sources in a multi-stage manner, and is safer and more reliable.

The invention relates to the field of oil and gas exploration and development, and provides an analytical method for the particle size in a conglomerate core particle structure. The method combining conglomerate core macroscopic finely described image analysis with representative region microcosmic slice image analysis is adopted. Features of the particle size in the conglomerate core particle structure are accurately acquired, used for analysis of the physic-geographical environment and hydrodynamic conditions during conglomerate deposition, also used for research of original accumulation physical properties of conglomerate reservoirs and evolution laws of accumulation physical properties during a burial process, and then used for giving guidance to oil and gas exploration and development.

The invention provides an inhibitor-combined natural gas hydrate replacement mining method, and belongs to the technical field of marine natural gas hydrate mining. Firstly, a plurality of mining wells are drilled in a mining area to the interior of a natural gas hydrate mineral deposit, and each mining well comprises a vertical well section and a horizontal well section; during exploitation, an inhibitor is injected into a reservoir through an injection well, a pore channel is opened, the stratum permeability is improved, and then carbon dioxide is injected for replacement exploitation. Diffusion of the inhibitor and carbon dioxide between two mining wells is facilitated by controlling the pressure difference between the injection well and a collection well. In a replacement mining process, the inhibitor can prolong the generation time of carbon dioxide hydrate injected into the periphery of a shaft, so that the carbon dioxide diffusion distance is increased, the contact area of replacement reaction is increased, and the mining depth and efficiency are improved. The method is easy to implement, the replacement depth and speed can be greatly increased, and the method can be used for large-scale exploitation of natural gas hydrates.

The invention relates to a method for biologically synthesizing natural gas from coke oven gas. The method comprises the following steps: (1) introducing organic wastes, the coke oven gas and aerobic activated sludge into a sealed deoxidization bio-reactor to perform a microaerobic biological deoxidization reaction; (2) introducing a nitrogen-free culture medium, the deoxidized coke oven gas and free-living anaerobic nitrogen-fixing bacteria into a sealed denitriding bio-reactor to perform an anaerobic biological denitriding reaction; (3)introducing the organic wastes subjected to the microaerobic biological deoxidization reaction from the sealed deoxidization bio-reactor, and a biogas producing inoculum into a sealed biogas producing reactor to perform biogas production by anaerobic fermentation; (4) performing solid-liquid separation on fermentation residues after biogas production by anaerobic fermentation, wherein a filtered biogas liquid contains rich nutriments and serves as a culture medium for subsequent methane production by anaerobic fermentation; and (5) introducing the deoxidized/denitrified coke oven gas, the biogas, the filtered biogas liquid and methane producing bacteria into a sealed methane producing reactor to perform methane production by anaerobic fermentation.

The invention relates to the technology of natural gas extraction, in particular to a device and method for exploiting seafloor combustible ice. The device comprises a sea surface operation platform and is characterized in that a traction rope is connected to the bottom of the sea surface operation platform, a ceiling curtain is connected to the tail end of the traction rope, and a supporting structure is arranged in the curtain; a bearing column is connected to the supporting structure and vertically arranged on an exploitation operation area, the ceiling curtain covers the upper portion of the exploitation operation area, and the ceiling curtain and the bearing column form a closed space. The device has the advantages that leakage of volatile combustible ice gas is avoided, the possibility of mining area collapse is reduced, and the device is beneficial to guarantee of ecological balance of the earth and life safety of operation personnel.

The invention relates to a hydraulic cutting device for a deep sea cutting sleeve and belongs to technical field of repairing tools for natural gas pipes. The cutting device comprises a shell, a connecting drum, a joint, a hollow shaft, an upper sleeve, a middle sleeve and a lower sleeve, wherein the joint is screwed at the top end of the shell through the connecting drum; a flow baffle hole is formed in the joint; the upper sleeve and the middle sleeve are arranged in the shell under the flow baffle hole; the lower sleeve is arranged at the lower end of the middle sleeve; cutting holes are uniformly distributed on the periphery of the lower sleeve. The cutting device has a simple structure, is convenient in use and can solve the problems of the present tools that the structure is complex, the operation is complex, if the sleeve is fully cut cannot be confirmed, the cutting accident is easily caused and the cutting efficiency is low. The cutting device can be used for more effectively, quickly and safely cutting the deep sea sleeve and is especially suitable for cutting the deep sea cutting sleeve.

The invention provides an ionic liquid dehumidifying method and an ionic liquid dehumidifying system for regulating gas humidity. The ionic liquid dehumidifying method comprises the following steps: enabling gas with higher humidity to sufficiently contact with a gas dehumidifying agent barren liquor, thus at least enabling moisture in the gas to be absorbed by the gas dehumidifying agent barren liquor to obtain a gas with lower humidity and a gas dehumidifying agent rich liquor; the gas dehumidifying agent barren liquor contains ionic liquor at least capable of absorbing water. Preferably, ionic liquid is adopted as the gas dehumidifying agent barren liquor. Preferably, the ionic liquid can also absorb volatile organic compounds. Water in the gas can be efficiently and fast removed by adopting the ionic liquid as a dehumidifying agent, the needed equipment is simple, and the system can stably and reliably run, and is safe and environment-friendly. The ionic liquid dehumidifying method and system are especially applicable to manufacturing shops needing to control air humidity, such as lithium battery, medicament manufacturing shops, and dried warehouses; and also, the ionic liquid dehumidifying method and system can also be applied to dewatering and purification technology of natural gas, associated gas and the like.

The invention aims to provide a method for improving euryops pectinatus oil aroma quality and application thereof. The method includes: subjecting euryops pectinatus to low temperature superfine comminution, then adding a certain amount of acid, an oxidant and enzyme and mixing the substances evenly in an aqueous solution, conducting incubation fermentation for a certain period of time under a synergistic effect, and carrying out steam distillation to extract volatile oil. The method improves the extraction rate and aroma quality of euryops pectinatus oil, the euryops pectinatus oil has composite, natural and rich aroma, besides chrysanthemum characteristic aroma, also has flower fragrance, fruit sweet aroma, slightly cool sense feel and other natural smell, the irritation is reduced, andthe aroma quality is improved. The prepared euryops pectinatus oil can be applied in cigarette formula cut tobacco, reconstituted tobacco, and cut stems, the prepared cigarette has clear aroma, chrysanthemum characteristic note, rich and pure aroma, and clean aftertaste, and overcomes the defects of too strong chrysanthemum characteristic aroma, increased irritation, little miscellaneous qi, and slightly bitter aftertaste.

The invention discloses a steam waste heat gradient utilization system for a carbon capture absorbent regeneration system. A reboiler in the steam waste heat gradient utilization system is communicated with a low-pressure cylinder of a steam turbine through a low-pressure supersaturated steam supply pipeline, a temperature reducing unit cools low-pressure supersaturated steam, the reboiler is communicated with a low-pressure flash evaporation unit through a condensed water supply pipeline, the low-pressure flash evaporation unit is communicated with a low-temperature multi-effect distillationunit through a low-temperature steam supply pipeline, and condensed water in the low-pressure flash evaporation unit returns to a steam-water circulation system of a waste heat boiler at the temperature of 70 DEG C or below. According to the invention, under the condition that carbon capture is carried out, seawater desalination or high-salinity wastewater treatment is carried out by utilizing thewaste heat of the capture unit, the natural gas-steam combined cycle-CO2 capture unit energy gradient utilization is achieved, meanwhile, co-production is achieved, the overall economy is improved, the temperature of condensate water returning to a steam-water circulation system of the waste heat boiler is reduced, and then flue gas waste heat in a waste heat boiler system is fully utilized.

The invention relates to a tubular column lowering power tractor with a well grinding and repairing function, wherein the tubular column lowering power tractor is used for the oil and gas cement job. According to the technical scheme, a screw motor is used as a driving mechanism; a motor rotor and the crown portion of the tractor are connected together through a transmission shaft and a fluid director; a flow guide hole is formed in the fluid director, and water holes are formed in the crown portion of the tractor to drain drilling fluid. Hard alloy teeth are inlaid on the crown portion of the tractor. The tubular column lowering power tractor with the well grinding and repairing function can guide and lower a sleeve in under the condition that the sleeve column is not rotated, the crown portion of the tractor can break rock and broaden a hole, and the tractor ensures that the sleeve can be lowered into a designed position safely and efficiently. The rotatable and asymmetrical crown portion of the tractor has strong capacity for crossing ledge barriers in a well, after the sleeve is lowered into the designed position, a tool can be drilled with a milling bit in about a dozen minutes, and then cement is injected in to fix the well. The tubular column lowering power tractor with the well grinding and repairing function can provide an output torque which is large enough, and can be used even under the working conditions when the well conditions are very complex.

New methods for determining the volumetric composition and saturation of methane and NGLs (natural gas liquids: ethane, propane, butane, and pentane) in a petroleum reservoir combining NMR (nuclear magnetic resonance) logging and NMR core analysis and for determining the mean pore-size and tortuosity of the light hydrocarbon-filled porosity in a petroleum reservoir using NMR core analysis.

The invention belongs to the technical field of injectors, particularly to a natural gas and diesel injector of a novel control mode. The natural gas and diesel injector of the novel control mode comprises an injector shell body, a natural gas magnetic valve, a diesel magnetic valve and a valve body. The injector shell body is provided with the natural gas magnetic valve, the diesel magnetic valveand the valve body. Joint of valve body and injector shell body is provided with a middle body. The valve body is internally provided with a needle valve and a gas valve. The injector shell body is provided with a diesel high pressure oil inlet, a natural gas high pressure inlet and a diesel return channel. The natural gas high pressure inlet is communicated with a ring belt through a connectingair passage and an air passage in the shell body pass through a middle body air passage and a valve body air passage on the middle body. The natural gas and diesel injector of the novel control mode has the beneficial effects that control flexibility is wide, independent control and independent injection of double fuel of diesel and the natural gas can be achieved, lengths of the needle valve andthe gas valve are reduced in design and is convenient to machine , meanwhile a coupled structure and synchronous movement which a gas valve guide sleeve drives the gas valve are introduced to avoid complicated technology and improve production consistency and reliability of products, and cost is reduced.

The invention relates to a tail gas after-treatment assembly. The tail gas after-treatment assembly is used for treating tail gas of a natural gas engine and comprises a tail gas after-treatment package; the tail gas after-treatment package comprises a shell and a catalyst carrier packaged into the shell; the tail gas after-treatment assembly further comprises a natural gas burner mounted on the upstream of the tail gas after-treatment package; and the natural gas burner is used for heating tail gas of the natural gas engine to increase the temperature of the tail gas during flowing through the catalyst carrier. The invention further relates to a system for the natural gas engine. The system for the natural gas engine comprises the natural gas engine and the tail gas after-treatment assembly. Compared with the prior art, the natural gas burner is arranged to heat the tail gas of the natural gas engine so that the catalyst carrier can be quickly heated up at the cold starting stage of the engine, and the converting efficiency of the tail gas is improved.

The invention discloses a metering device for condensate natural gas pipelines facilitating use of a turbine flowmeter. The metering device comprises a fluid pipeline and a metering device arranged on the fluid pipeline. A separation tank is connected with the fluid pipeline in series and disposed at the front end of the metering device. The fluid pipeline on the outlet side of the separation tank is connected to the top or the side surface of the separation tank, in which a spiral separator is arranged. The spiral separator is in the barrel-shaped structure that the lower end of the spiral separator is provided with an inlet, the side surface of the spiral separator is provided with an outlet and a spiral flow channel is arranged between the inlet and the outlet. The fluid pipeline on the outlet side of the separation tank is connected with an outlet of the spiral separator. A liquid outlet pipe is arranged on the separation tank and connected with a block valve in series. The metering device for condensate natural gas pipelines facilitating use of the turbine flowmeter has following beneficial effects: the metering device has a simple structure and can be accurately metering a gaseous fluid of condensate natural gas; gas-liquid separation is achieved so that collection and disposal of subsequent condensed liquid are conveniently performed; and corrosion of gas-phase fluid downstream equipment is minimized or avoided.

A process is disclosed for the removal of hydrogen sulfide (H2S) from natural. This process provides for passing a natural gas feedstream comprising H2S though a regenerable adsorbent media which adsorbs H2S to provide an H2S-lean natural gas product and H2S. The regenerable adsorbent media of the present invention is a cross-linked macroporous polymeric adsorbent media

The invention relates to a small-scale movable distributed energy system. The system includes a car unloading device and a micro-combustion engine. A filtering device, a metering device, a primary pressure regulating device, The thermal device, the secondary pressure regulating device and the buffer device, the micro-combustion engine generates electric energy and heat energy, and the electric energy is connected to the regional power grid for output to the electrical equipment, part of the heat energy is output to the heat exchange device for heat exchange with incoming air, and the other part is used for Heating or domestic hot water. The invention realizes cascaded utilization of energy, natural gas power generation increases energy quality, waste heat utilization improves overall energy utilization efficiency, achieves the purpose of efficient energy utilization, and greatly reduces carbon dioxide emissions and dependence on municipal power grids. Simple, high degree of automation, less maintenance, safe and reliable, strong system adaptability.