Japan Oil, Gas and Metals National Corporation

Tokyo, Japan

Japan Oil, Gas and Metals National Corporation

Tokyo, Japan
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Patent
Japan Oil, Gas and Metals National Corporation | Date: 2016-11-18

A vibration detection system includes a seismic source device that generates a vibration wave repeated with a predetermined period, a vibration receiving device that receives a response wave due to the vibration wave transmitted via the ground, and a signal processing apparatus that processes measured vibration signals received by the vibration receiving device. The signal processing apparatus includes a separating part that separates individual periodic signals having a period according to a periodicity of the vibration wave generated by the seismic source from the measured vibration signals, the calculating part that calculates the standard periodic signal from the separated individual periodic signals, and the generating part that subtracts the standard periodic signal from the measured vibration signals and generates differential signals.


Patent
Japan Oil, Gas and Metals National Corporation | Date: 2015-05-19

The present invention seeks to decompose and remove various types of organic materials contained in oilfield water by one operation. To this end, this method for treating oilfield water is provided with: a step for obtaining primary treated water containing organic material by removing the solid content and oil content from oilfield water; and a step for decomposing the organic material by exposing the primary treated water to discharge plasma, wherein the discharge plasma is generated by a nanosecond pulse power source for outputting a pulse having a pulse width of 10 ns or less.


Patent
Japan Oil, Gas, Metals National Corporation, INPEX Corporation, Nippon Oil Corporation, Japan Petroleum Exploration Co., Cosmo Oil Co. and Nippon Steel & Sumikin Engineering Co. | Date: 2015-09-16

A start-up method for a hydrocarbon synthesis reaction apparatus, comprising: an initial slurry-loading step in which the slurry is loaded into the reactor at the initial stage of the Fischer-Tropsch synthesis reaction at a lower loading rate than that applied to the reactor in a steady-state operation; and a CO conversion ratio-increasing step in which the liquid level of the slurry in the reactor is raised by adding to the slurry the hydrocarbons synthesized at the early stage of the Fischer-Tropsch synthesis reaction so that the CO conversion ratio is increased in proportion to a rise in the liquid level of the slurry in the reactor.


Patent
Japan Oil, Gas, Metals National Corporation, INPEX Corporation, Nippon Oil Corporation, Japan Petroleum Exploration Co., Cosmo Oil Co. and Nippon Steel & Sumikin Engineering Co. | Date: 2015-02-04

A start-up method of a bubble column slurry bed reactor for producing hydrocarbons includes: a first step that fills into a reactor a slurry in which a Fischer-Tropsch synthesis reaction catalyst particles are suspended in a slurry preparation oil with a 5% distillation point of 120 to 270C, a 95% distillation point of 330 to 650C, and a sulfur component and an aromatic component of 1 mass ppm or less, and a second step that, in a state where synthesis gas that is primarily hydrogen and carbon monoxide is introduced into the slurry filled into the reactor, raises the temperature of the reactor and starts the Fischer-Tropsch synthesis reaction. As the slurry preparation oil, one containing predetermined components in preset amounts is used. In the first step, the slurry is filled into the reactor in an amount in which airborne droplets do not flow out.


Patent
Japan Oil, Gas, Metals National Corporation, INPEX Corporation, Nippon Oil Corporation, Japan Petroleum Exploration Co., Cosmo Oil Co. and Nippon Steel & Sumikin Engineering Co. | Date: 2016-09-22

Hydrocarbon oil obtained by Fischer-Tropsch (FT) synthesis reaction using a catalyst within a slurry bed reactor is fractionated into a distilled oil and a column bottom oil in a rectifying column, part of the column bottom oil is flowed into a first transfer line that connects a column bottom of the rectifying column to a hydrocracker, at least part of the column bottom oil is flowed into a second transfer line branched from the first transfer line and connected to the first transfer line downstream of the branching point, the amount of the catalyst fine powder to be captured is monitored while the catalyst fine powder in the column bottom oil that flows in the second transfer line are captured by a detachable filter provided in the second transfer line, and the column bottom oil is hydrocracked within the hydrocracker.


Patent
Japan Oil, Gas, Metals National Corporation, INPEX Corporation, Nippon Oil Corporation, Japan Petroleum Exploration Co., Cosmo Oil Co., Nippon Steel & Sumikin Engineering Co. and Chiyoda Corporation | Date: 2016-06-01

A synthesis gas production apparatus (reformer) to be used for a synthesis gas production step in a GTL (gas-to-liquid) process is prevented from being contaminated by metal components. A method of suppressing metal contamination of a synthesis gas production apparatus operating for a GTL process that includes a synthesis gas production step of producing synthesis gas by causing natural gas and gas containing steam and/or carbon dioxide to react with each other for reforming in a synthesis gas production apparatus in which, at the time of separating and collecting a carbon dioxide contained in the synthesis gas produced in the synthesis gas production step and recycling the separated and collected carbon dioxide as source gas for the reforming reaction in the synthesis gas production step, a nickel concentration in the recycled carbon dioxide is not higher than 0.05 ppmv.


Patent
Japan Oil, Gas, Metals National Corporation, INPEX Corporation, Nippon Oil Corporation, Japan Petroleum Exploration Co., Cosmo Oil Co. and Nippon Steel & Sumikin Engineering Co. | Date: 2016-02-03

The hydrocarbon synthesis reaction apparatus according to the present invention includes a reaction vessel that brings a synthesis gas having carbon monoxide gas and hydrogen gas as main components into contact with a slurry having a solid catalyst suspended in a liquid hydrocarbon compound to synthesize a liquid hydrocarbon compound using a Fischer-Tropsch reaction; a filter that is provided within the reaction vessel and is configured to separate the liquid hydrocarbon compound from the catalyst; and a powdered catalyst particles-discharging device configured to discharge powdered catalyst particles in the solid catalyst in the slurry to the outside of the reaction vessel.


This volume describes processes used in and results from laboratory measurements and analyses of core samples taken from methane hydrate-bearing sediments in a methane hydrate concentrated zone in the eastern Nankai Trough. The core analysis program was conducted under a Japan-US collaboration. Several pressure-preserved core samples were recovered as part of the research program that supported the world's first gas production trial from a marine gas-hydrate deposit in the area. To maintain physical properties of the core samples under in situ conditions and not allow the dissociation of the gas hydrates, preservation of the samples under pressure and temperature was necessary during sampling and analyses. To attain this goal, several new techniques were developed and employed for both core sampling and analysis operations. Multidisciplinary measurements for geological, geochemical, petrophysical, and mechanical data were performed on both pressure-preserved and conventional samples. The resulting data allow us to derive integrated and quantitative information about the nature of methane-hydrate-bearing sediments. This data and information are being used for reservoir characterization at the production test site and to improve our understanding of the behavior of methane-hydrate reservoirs during and after gas production. © 2015 The Author.


Patent
Japan Oil, Gas and Metals National Corporation | Date: 2015-09-03

An image processing apparatus comprises an acquiring section that acquires DEM data indicating digital elevation of each lattice-shaped area in a predetermined map region, a selecting section that selects at least one of a plurality of line filters that filters data which is continuous in one direction in the map region and a plurality of matrix filters that filters data constituting a two-dimensional region in the map region, a filter processing section that conducts filter processing of the DEM data acquired by the acquiring section by a filter selected by the selecting section, and an outputting section that outputs the DEM data after being filtered in the filter processing.


Patent
Japan Oil, Gas and Metals National Corporation | Date: 2015-10-23

A signal processing device includes a propagation speed calculating means for calculating strength and a direction of vibration in an underground structure region using a calculation model including data of a vibration propagation speed; a simulated propagation speed calculating means for inputting seismic source information to a calculation model and calculating the strength and the direction of the vibration in the underground structure region using the calculation model; and an update amount calculating means for calculating an update amount to update the calculation model, on the basis of propagation speed distribution information and simulated propagation speed distribution information. The calculation model is a solid model, the propagation speed calculating means calculates strength and a direction of first vibration using a first measurement signal input to the calculation model and calculates strength and a direction of second vibration using a second measurement signal input to the calculation model.

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