STATOIL ASA Patent applications |
Patent application number | Title | Published |
20150322758 | SOLVENT INJECTION RECOVERY PROCESS - A process for the recovery of hydrocarbons from a hydrocarbon bearing formation and in which are situated an upper injection well and a lower production well is presented. The region between the wells is preheated by circulating hot solvent through at least part of both of the wells until hydraulic communication between both wells is achieved. Solvent is injected into the upper injection well at or above its critical temperature and the solvent is pentane or a mixture of butane and pentane. A hot solvent chamber is created consisting of solvent vapour and liquid. Bitumen and solvent are mixed at the boundary of the solvent chamber so formed. The hydrocarbon and solvent are caused to be mixed to drain downwards by gravity and sideways by pressure gradient towards the lower production well. The mixture is produced to the surface through the lower production well. | 11-12-2015 |
20140196895 | IN SITU COMBUSTION PROCESS WITH REDUCED C02 EMISSIONS - The present invention provides a method of recovering a hydrocarbon mixture from a subterranean formation comprising: (i) injecting an oxygen-rich gas into said formation; (ii) combusting said oxygen-rich gas in said formation thereby heating and reducing the viscosity of said hydrocarbon mixture and generating CO | 07-17-2014 |
20140116692 | Well Treatment - The present invention provides a method for the treatment of a subterranean formation which contains sand particles, said method comprising contacting said formation with a material capable of increasing the residual matrix strength of said particulate fine whereby to reduce or prevent their migration whilst minimizing any decrease in their permeability. Preferred materials include organosilanes and enzyme systems. | 05-01-2014 |
20130259575 | METHODS FOR STORING CARBON DIOXIDE COMPOSITIONS IN SUBTERRANEAN GEOLOGICAL FORMATIONS AND AN APPARATUS FOR CARRYING OUT METHOD - A method and arrangement are proposed for introducing a CO | 10-03-2013 |
20130229892 | METHOD OF PREDICTING THE PRESSURE SENSITIVITY OF SEISMIC VELOCITY WITHIN RESERVOIR ROCKS - A method of predicting the pressure sensitivity of seismic velocity within reservoir rocks includes defining the degree of cementation of rock as at least one of friable sand, partially cemented rock and cemented rock. For rock including friable sand, a first model specifying a dependence of seismic velocity upon pressure is defined. For rock including partially cemented rock, a second model specifying a dependence of seismic velocity upon pressure and a weighting function accounting for a degree of cementation of the rock is defined. For rock including cemented rock, a third model demonstrating an insensitivity of seismic velocity to pressure is defined. For a given dry rock moduli and porosity, the method includes determining a degree of cementation, selecting the appropriate model, and using the selected model to predict the sensitivity of seismic velocity to pressure. | 09-05-2013 |
20130170952 | METHOD AND APPARATUS FOR COMPOSITION BASED COMPRESSOR CONTROL AND PERFORMANCE MONITORING - A method and apparatus controls a compressor, where the compressor inlet gas may contain water and/or non-aqueous liquid. The method includes the steps of measuring temperature at the compressor inlet and/or outlet side, measuring pressure at the compressor inlet and outlet side in order to determine a compressor pressure ratio, measuring fluid mixture density at the compressor inlet and/or outlet side, measuring individual volume fractions of gas, water and non-aqueous liquid at the compressor inlet and/or outlet side, measuring fluid velocity at the compressor inlet and/or outlet side, and determining individual flow rates of gas, water and non-aqueous liquid on the basis of the measured individual volume fractions of gas, water and non aqueous liquid and the fluid velocity at the compressor inlet and/or outlet side. | 07-04-2013 |
20130072344 | MULTIPLE-ROW EPICYCLIC GEAR - A multiple-row epicyclic gear includes a carrier with planet gears arranged in rows, as well as a composite central ring gear, having major crowns, with friction spacer rings disposed there between, are also mounted in the housing. The elements of the central ring gear are axially spring loaded. The end faces of the frictional spacer rings and counter-oriented end faces of the major crowns have tapered surfaces being in frictional contact. The friction spacer rings are spliced and arranged to bring their outer cylindrical surfaces into frictional contact with the inner cylindrical surface of the housing. The planet gears are disposed on the carrier in rows in corresponding apertures (or through openings) formed in the carrier. The optimal cone apex angle (δ) of the contacting tapered end faces of the major crowns and tapered end faces of the friction spacer rings is in the range 60-90°. | 03-21-2013 |
20130056221 | FLOW CONTROL DEVICE AND FLOW CONTROL METHOD - A method and apparatus is disclosed for controlling the flow of fluid in oil and/or gas production, involving a control device or an autonomous valve ( | 03-07-2013 |
20130025858 | SOLVENT AND GAS INJECTION RECOVERY PROCESS - A process for the recovery of hydrocarbon such as bitumen/EHO from a hydrocarbon bearing formation in which are situated an upper injection well and a lower production well, the method comprising the steps: preheating an area around and between the wells by circulating hot solvent through the completed interval of each of the wells until sufficient hydraulic communication between both wells is achieved; injecting one of more hydrocarbon solvents into the upper injection well at or above critical temperature of the solvent or solvent mixture, thereby causing a mixture of hydrocarbon and solvent to flow by gravity drainage to the lower production well; and producing the hydrocarbon to the surface through the lower production well. A non-condensable gas may be injected into the solvent chamber created by the hydrocarbon solvent. | 01-31-2013 |
20130000894 | SOLVENT INJECTION RECOVERY PROCESS - A process for the recovery of hydrocarbon such as bitumen/EHO from a hydrocarbon bearing formation in which are situated an upper injection well and a lower production well, the method comprising the steps: preheating an area around and between the wells by circulating hot solvent through the completed interval of each of the wells until sufficient hydraulic communication between both wells is achieved; injecting one of more hydrocarbon solvents into the upper injection well at or above critical temperature of the solvent or solvent mixture, thereby causing a mixture of hydrocarbon and solvent to flow by gravity drainage to the lower production well; and producing the hydrocarbon to the surface through the lower production well. | 01-03-2013 |
20120247831 | CONTROL METHOD AND APPARATUS FOR WELL OPERATIONS - A method of controlling the annular pressure in a well during a well construction operation. The operation comprises pumping a fluid down a tubing located within the well and extracting the fluid that flows back through an annulus within said well and surrounding the tubing. The method comprises defining a set pressure pref, determining a desired extraction flow rate qc of fluid from said annulus in dependence upon the set pressure pref and a pumped flow rate into the annulus, and configuring an extraction path to achieve said desired extraction flow rate. | 10-04-2012 |
20120208728 | WELL TREATMENT - The present invention provides a method for inhibiting scale formation within a hydrocarbon producing system (e.g. a subterranean formation), said method comprising contacting said system with a clay mineral, an organosilane and a scale inhibitor. | 08-16-2012 |
20120173149 | METHOD OF ASSESSING HYDROCARBON SOURCE ROCK CANDIDATE - A method of assessing a hydrocarbon source rock candidate uses seismic data for a region of the Earth. The data are analysed to determine the presence, thickness and lateral extent of candidate source rock based on the knowledge of the seismic behaviour of hydrocarbon source rocks. An estimate is provided of the organic content of the candidate source rock from acoustic impedance. An estimate of the hydrocarbon generation potential of the candidate source rock is then provided from the thickness and lateral extent of the candidate source rock and from the estimate of the organic content. | 07-05-2012 |
20120163742 | AXIAL GAS THRUST BEARING FOR ROTORS IN ROTATING MACHINERY - An axial gas thrust bearing for rotors in rotating machinery includes at least one radial disk, integral with or fastened to the rotor and one fixed seal facing each disk or two fixed seals positioned to surround each disk, lower portions of the seals being situated at a distance from the rotor to allow the inflow of compressed fluid passing in the gap between the respective disk and seals, thereby combining the properties of a balance piston and thrust bearing disk. | 06-28-2012 |
20120160737 | PROCESS - The present invention provides a process for simultaneously extracting and upgrading a heavy hydrocarbon mixture, said process comprising: i) injecting supercritical or near-supercritical CO | 06-28-2012 |
20120160479 | EXPANDABLE PIPE SECTION - An expandable pipe section, intended to be joined with a corresponding pipe section for use in connection with a well casing of a production well for hydrocarbons, where the pipe section is configured to be screwed on or off an adjoining expandable pipe section, the pipe section at one end being provided with a male end having externally arranged threads and where the adjoining expandable pipe section is provided with a correspondingly shaped female end having corresponding internal threads. The distance between adjacent threads at their widest point is less than the maximum width of a thread. Those parts of the pipe being provided with threads are provided with at least two step wise arranged parts with a cylindrical surface being coaxially arranged with the pipe wall(s). | 06-28-2012 |
20120123683 | CSEM SURVEY METHOD - There is disclosed a method of performing a controlled source electromagnetic survey, which includes in one embodiment deploying a receiver and an electric dipole source. The source defines a dipole axis. An electromagnetic field is transmitted from the electric dipole source. First and second horizontal components of an electromagnetic field response are detected using the receiver. A vertical component of the electromagnetic field response is then estimated using the detected first and second horizontal components of the electromagnetic field response. | 05-17-2012 |
20120111578 | EQUIPMENT AND METHOD FOR REINFORCING A BOREHOLE OF A WELL WHILE DRILLING - The equipment for drilling and reinforcing a borehole of a well comprises a drill pipe string carrying a drill tool at its lowermost end and a downhole treatment device held on the drill pipe string for applying a liner of polymer material at the surface of the borehole. The polymer material is a fusible and/or curable material dissolved and/or emulsified and/or dispersed in drilling fluid or mud circulated through the drill pipe string and an annulus between the drill pipe string and the wall of the borehole. The treatment device is adapted to concentrate energy for fusing and/or curing the polymer material contained in the drilling fluid in a limited space at the vicinity of the wall of the borehole. The treatment device thus focuses its energy in the vicinity of the wall and allows a continuous reinforcing of the borehole simultaneously while drilling. | 05-10-2012 |
20120091705 | PRESSURE JOINT - A pressure joint is provided for use with a floating installation ( | 04-19-2012 |
20120080184 | APPARATUS AND METHOD FOR EVALUATING A WELLBORE, IN PARTICULAR A CASING THEREOF - The apparatus for evaluating a wellbore while drilling includes a logging toolheld on a drill string and is adapted to obtain data from the wellbore while moving the drill string including the logging tool uphole and out of the wellbore. The logging tool includes a memory for storing obtained data and an on-board power supply battery. A computer being positioned at a surface level of the wellbore is adapted to obtain the data from the memory when the logging tool is also positioned at the surface level. The logging tool is adapted to perform a minimum power-consuming sleep mode with a data obtaining and storing function being disabled and the computer is adapted to transmit a wake-up signal downhole to enable the data obtaining and storing function of the logging tool just prior to tripping out the drill string from the wellbore. The wake-up signal preferably is a mud pulse signal sent through the drilling fluid used when drilling the wellbore. | 04-05-2012 |
20120043081 | SINGLE WELL STEAM ASSISTED GRAVITY DRAINAGE - The present invention provides a method for recovering hydrocarbons from a sub-surface reservoir having present therein a wellbore in which a production conduit and an injection conduit are located, said method comprising injecting a heating fluid into the reservoir via said injection conduit, characterised in that said heating fluid is released via a plurality of discrete permeable sections (injection sections) located along the length of the injection conduit and produced hydrocarbons are collected via a plurality of discrete permeable sections (production sections) located along the length of the production conduit. | 02-23-2012 |
20120029702 | WELLBORE MACHINING DEVICE - A wellbore machining device is proposed for machining a tubular component of a wellbore. The device includes a control unit at the surface level of the wellbore and a down-hole tool unit connected to the control unit through a wire line. The tool unit includes an elongated guide member, a tool member movably supported on the guide member with respect to at least three axes of motion and a plurality of actuators controlled by the control unit and adapted to move the tool member with respect to the axes of motion. The tool unit further includes two anchor members each mounted to an axial end of the guide member and adapted to releasably clamp the tool unit to the tubular component. The control unit and the tool unit form a computer numerical control device (CNC device) wherein the actuators are electric servo motors controlling an actual position of the tool member with respect to a path and/or a sequence of desired position defined by the control unit. | 02-02-2012 |
20120013335 | METHOD OF ADJUSTING PROPERTIES OF DRILLING FLUIDS AND APPARATUS FOR USE IN SUCH METHODS - The present invention provides a method of determining a physiochemical property of a drilling fluid at a drilling site during a drilling phase, said method comprising detecting a nuclear magnetic resonance signal from out-of-hole drilling fluid at said site and calculating therefrom a value indicative of said property. | 01-19-2012 |
20120011130 | METHOD OF AND APPARATUS FOR PROCESSING CSEM DATA, PROGRAM, STORAGE MEDIUM, COMPUTER AND USE OF METHOD - A method of processing controlled source electromagnetic (CSEM) data is provided for reducing the airwave contribution. CSEM data are acquired, for example using a conventional towed source ( | 01-12-2012 |
20120000643 | GAS-LIQUID SEPARATOR - The gas-liquid separator separates a variable multi-phase flow of gas and liquid in a gas dominated flow and a liquid dominated flow. The separator includes a housing which encloses a separation chamber, an inlet port for feeding the multi-phase flow into the separation chamber, a liquid outlet port for discharging the liquid dominated flow from the separation chamber and a gas outlet port provided at a position above both the inlet port and the liquid outlet port for discharging the gas dominated flow from the separation chamber. Both the inlet port and the liquid outlet port are positioned adjacent to an elongated lower bottom wall of the housing and define a flow direction into the and out of the separation chamber approximately aligned along the bottom wall, wherein the separation chamber extends above the bottom wall in between the inlet port and the liquid outlet port. The liquid outlet port is provided with a gas seal to prevent entrainment of free gas from the separation chamber into the liquid outlet port. The gas-liquid separator is compact and is preferably used at an offshore sub-sea position. | 01-05-2012 |
20110316277 | Blade Pitch Control in a Wind Turbine Installation - The present invention relates to a blade pitch controller for a floating wind turbine structure, wherein the floating wind turbine structure may include a support structure supporting a rotor having a number of blades. The controller may include standard blade pitch control means and active damping means. The standard blade pitch control means is arranged to control a blade pitch using a transfer function between a rotor speed error and the blade pitch. The active damping means is arranged to further control the blade pitch on the basis of a speed of a point on the wind turbine structure by converting the speed of a point on the wind turbine structure into a rotor speed error and using the same transfer function that is used in the standard blade pitch control means to convert the rotor speed error into a correction to the blade pitch. | 12-29-2011 |
20110308548 | METHOD AND DEVICE FOR MEASURING DEPOSIT THICKNESS - The present invention concerns a method for measuring the thickness of any deposit of material on the inner wall of a structure conducting a fluid stream of hydrocarbons, the method comprising the steps of: applying a first heat pulse or continuous heating to at least one first section of the structure removing deposits on the inner wall of the first section of the structure; applying a second heat pulse to both the first section of the structure and at least one second section of the structure, the first and second sections being spaced apart, which heat pulse does not loosen any deposit of material in the second section; measuring the temperature of the wall of the structure or the fluid during the second heat pulse at both the first and second sections; and determining the thickness of any deposit of material on the inner wall of the structure at the second section based on the measured temperatures. The present invention also relates to a corresponding device and arrangement. | 12-22-2011 |
20110303012 | METHOD AND DEVICE FOR MEASURING THE THICKNESS OF ANY DEPOSIT OF MATERIAL ON AN INNER WALL OF A STRUCTURE - A method of measuring the thickness of any deposit of material ( | 12-15-2011 |
20110264423 | METHOD OF PROCESSING MEASURED DATA - A method is provided for processing measured data to provide information on the structure of a region of the earth. The method comprises providing a flexural rigidity distribution of the region, providing a Young's modulus distribution of the region, and modifying the flexural rigidity distribution with the Young's modulus distribution to obtain an equivalent elastic thickness distribution of the region indicative of the structure thereof. | 10-27-2011 |
20110220354 | POLYMER GELS AS FLOW IMPROVERS IN WATER INJECTION SYSTEMS - A water injection system that includes a primary water injection line; an injection fluid supply tank; a high pressure injection pump in fluid communication with the injection fluid supply and primary water injection line for pumping injection fluid in injection fluid supply tank through the primary water injection line; a polymer gel supply tank; and a high pressure chemical injection pump in fluid communication with the polymer gel supply tank and the water injection line configured to pump polymer gel having a viscosity of at least about 50,000 cP (at 20° C. measured using a Bohlin Rheometer CSR 50, cone and plate measuring system CP 4°/40 mm, single shear rate 1/s) in the polymer gel supply tank into the water injection line for mixture with injection fluid is disclosed. | 09-15-2011 |
20110171705 | PROCESS FOR THE PRODUCTION OF ALCOHOL - The invention provides a process for the production of an alcohol which comprises cleaving polysaccharides in a cellulosic material in an aqueous medium at a temperature of at least 45° C. using a thermophilic microorganism to yield fermentable sugars, fermenting an aqueous solution of said sugars at a temperature of at least 45° C. with a thermophilic microorganism to yield an alcohol or an alkanoate, if necessary reducing said alkanoate to yield an alcohol, and removing said alcohol from said aqueous solution. | 07-14-2011 |
20110113825 | DUAL NITROGEN EXPANSION PROCESS - A method of natural gas liquefaction comprising first and second nitrogen refrigerant streams, each stream under-going a cycle of compression, cooling, expansion and heating, during which the first nitrogen stream is expanded to a first, intermediate pressure and the second nitrogen stream is expanded to a second, lower pressure, and the heating occurs in one or more heat exchangers in which at least one of the expanded nitrogen streams is in heat exchanging relationship with natural gas, wherein, in at least one of said one or more heat exchangers, the first and second expanded nitrogen streams are in a heat exchanging relationship with the natural gas and both the first and second compressed nitrogen streams. The liquefaction can occur in three stages: in an initial stage the heated, expanded first nitrogen stream and the heated, expanded second nitrogen stream are used to cool the natural gas; in an intermediate stage the compressed first nitrogen stream is expanded to an intermediate pressure and used to cool the natural gas; and in a final stage the compressed, second nitrogen stream is expanded to a low pressure and used to cool the natural gas. | 05-19-2011 |
20110102806 | IMPROVED INTERFEROMETRIC METHODS AND APPARATUS FOR SEISMIC EXPLORATION - A interferometer apparatus for studying the surface of an object, the apparatus comprising a source producing an object beam of coherent light, a source producing a reference beam which is coherent with the object beam, and a detector or a plurality of detectors arranged in a line or array, wherein the apparatus is arranged such that the object beam is diverging or substantially collimated, and wherein, in use the diverging or substantially collimated object beam is directed towards the surface of the object to produce a reflected object beam reflected from the surface of the object, the detector(s) is/are focused to a point beneath the surface of the object, and the reflected object beam is combined with the reference beam and detected by the detector(s). Also provided is a corresponding method for conducting an interferometric study of the surface of an object. The surface of the object may be a sea floor, and the interferometer apparatus may be for studying the movement of particles on the sea floor in response to a seismic event. | 05-05-2011 |
20110085420 | METHOD OF AND APPARATUS FOR EXPLORING A REGION BELOW A SURFACE OF THE EARTH - A passive method for exploring a region below the surface of the earth. The method comprises using a single sensor located in turn at a plurality of locations to obtain seismic data obtained by recording ambient seismic interface waves in a frequency range whose lower limit is greater than 0 Hz, and whose upper limit is less than or equal to substantially 1 Hz. The data are processed so as to obtain a measure of the energy in a frequency band within the frequency range. For example, the seismic data may be filtered and may be subjected to amplitude normalization before being transformed into the frequency domain. The energy measure may then be calculated by integrating the spectrum in the frequency domain over a desired frequency range. The resulting calculated energy provides information about the region of the earth being explored. | 04-14-2011 |
20110075515 | ESTIMATION OF TIME SHIFT BASED ON MULTI-VINTAGE SEISMIC DATA - The invention is a method of calculating seismic time shifts Δ{right arrow over (t)}(t), comprising:
| 03-31-2011 |
20110073313 | DEVICE FOR FIXING A VALVE TO A TUBULAR MEMBER - A device for fixing a valve ( | 03-31-2011 |
20110072975 | SEPARATION AND CAPTURE OF LIQUIDS OF A MULTIPHASE FLOW - Assembly to separate a multiphase flow, comprising at least one compact separation unit chosen among an in-line deliquidiser and an in-line phase splitter, said compact separation unit is arranged to receive the multiphase flow for separation therof to a gas flow and a mainly liquid containing flow, an outlet for gas, arranged to receive the gas flow from the compact separation unit and possible additional gas flows, one or more conduit separators, arranged to receive the mainly liquid containing flow from the compact separation unit and any additional liquid containing flows, having an outlet for liquid from the at least one conduit separator in a low-lying part thereof. | 03-31-2011 |
20110057528 | BEARING SYSTEM FOR HIGH SPEED ROTARY MACHINE IN A SUB SEA ENVIRONMENT - The present invention discloses a bearing system for a high speed rotary machine, said bearing system comprising a rotor shaft ( | 03-10-2011 |
20110056700 | SYSTEM AND METHOD FOR RECOMPLETION OF OLD WELLS - A system for recompletion of an old well in order to achieve an increased oil recovery from a reservoir, said system comprising a pipe inserted into the old well, at least two constrictors or swell packers being arranged along the length of the recompleted well and defining a well section between two successive constrictors or swell packers, said system further comprising at least one autonomous valve arranged in said well section defined between said two successive swell packers or constrictors. Disclosed is also a method for recompletion of an old well in order to achieve an increased oil recovery from a reservoir. | 03-10-2011 |
20110056578 | TUBULAR MEMBER HAVING SELF-ADJUSTING VALVES CONTROLLING THE FLOW OF FLUID INTO OR OUT OF THE TUBULAR MEMBER - A tubular member having at least one drainage section ( | 03-10-2011 |
20110052375 | BEARING SYSTEM FOR ROTOR IN ROTATING MACHINES - A bearing system for a rotor in rotating machines, such as compressors, pumps, turbines, expanders, has points of bearing and sealing for the rotor each being in the form of a combined bearing and sealing formed by a stator situated within a rotating machine house and surrounding the rotor. The stator is formed with a bore, whereby an annular clearance is created between stator and rotor, and the bore is having sectional area gradually increasing in the direction of larger pressure within the rotating machine. | 03-03-2011 |
20110048732 | SYSTEM AND METHOD FOR CONTROLLING THE FLOW OF FLUID IN BRANCHED WELLS - A system for controlling the flow of fluid in a branched well from a reservoir ( | 03-03-2011 |
20110048696 | GAS-LIQUID SEPARATOR - A gas-liquid separator separates free water at a downhole position of a gas well. The separator includes a centrifugal separator within a tubular portion defining a gas inlet and a gas outlet. Upstream of the centrifugal separator, the tubular portion is provided with a plurality of drain holes through which free water which was centrifugated to the tubular portion enters an annular duct allowing the collected water to flow off due to gravity. Upstream of the drain holes, a jet pump is arranged. The jet pump is driven by the gas stream to create underpressure in the duct and to suck back gas which has entered the annular duct through the drain holes. The gas-liquid separator has no moving parts and avoids monitoring or controlling of the separating process. | 03-03-2011 |
20110048546 | GAS COMPRESSION SYSTEM - The invention relates to a wet gas compression system comprising a compact flow conditioner ( | 03-03-2011 |
20110046885 | METHOD OF AND APPARATUS FOR EXPLORING A REGION BELOW A SURFACE OF THE EARTH - A passive method for exploring a region below the surface of the earth. The method comprises using a plurality of sensors to obtain seismic data obtained by recording ambient seismic interface waves in a frequency range whose lower limit is greater than 0 Hz, and whose upper limit is less than or equal to substantially 1 Hz. The sensors may be sensitive to three orthogonal components. Recordings may be made simultaneously by all sensors and normalization of data is unnecessary. The sensors may be moved and clean data may be selected. Local dispersion curves may be determined to improve vertical resolution. The data are processed so as to obtain a measure of the energy in a frequency band within the frequency range. The energy measure may be calculated by integrating the spectrum in the frequency domain over a desired frequency range. The resulting calculated energy provides information about the region of the earth being explored. | 02-24-2011 |
20110027107 | POWER PLANT, METHOD FOR PRODUCING POWER, AND APPLICATION OF SAID POWER PLANT - Power plant comprising: a lower level reservoir, a feed-through (line, hose, pipe, channel) for fluid communication from the lower level reservoir to a higher level reservoir, characterised by a pump arranged in connection with the feed-through in order to pump water from the lower level reservoir to the higher level reservoir in order to store energy by emptying the lower level reservoir, and a turbine/generator for power production arranged in or at the lower level reservoir in connection with said feed-through, or additional feed-through, for fluid communication between the lower level reservoir and the higher level reservoir for power production during flow of water from the higher level reservoir to the lower level reservoir. A method for power production. Use of the power plant. | 02-03-2011 |
20110024127 | ASSEMBLY AND METHOD FOR PRODUCTION OF GAS OR GAS AND CONDENSATE/OIL - An underwater placed assembly produces gas or gas and oil/condensate from a subsea gaseous reservoir, where at least one production well is provided from the seabed to a production zone and at least one water injection well is provided from the seabed to an injection zone. The assembly includes: a pressure increasing device connected to the outlet of the production well in order to increase the pressure in a production flow from the production well, and a water turbine that is connected to and driving the pressure increasing device. | 02-03-2011 |
20110021384 | DRILLING FLUID ADDITIVE AND METHODS OF STABILIZING KAOLINITE FINES MIGRATION - A method of drilling is disclosed and includes pumping a wellbore fluid into a wellbore through an earth formation, wherein the wellbore fluid comprises a base fluid and a surface active agent capable of altering wettability of fines located in the earth formation, and allowing filtration of at least a portion of the wellbore fluid into the earth formation. | 01-27-2011 |
20110017311 | ALTERNATIVE DESIGN OF SELF-ADJUSTING VALVE - A method for flow control and a self-adjusting valve or flow control device, in particular useful in a production pipe for producing oil and/or gas from a well in an oil and/or gas reservoir, which production pipe includes a lower drainage pipe preferably being divided into at least two sections each including one or more inflow control devices which communicates the geological production formation with the flow space of the drainage pipe. The fluid flows through an inlet ( | 01-27-2011 |
20100332139 | FORMING A GEOLOGICAL MODEL - A method of forming a geological model of a region of the earth includes obtaining seismic data relating to the region, the seismic data including seismic traveltime uncertainty. A seismic velocity model of the region may also be provided and includes velocity uncertainty. Ray tracing may be performed on the seismic data using the velocity model to determine the three dimensional positions of a plurality of points of the region. The three dimensional positional uncertainties (7-12) of at least some of the points can be calculated from the traveltime uncertainty, the velocity uncertainty, and uncertainty in the ray propagation direction. This can be combined with the positions determined by the ray tracing to form a geological model. | 12-30-2010 |
20100300486 | METHOD FOR WAX REMOVAL AND MEASUREMENT OF WAX THICKNESS - A method for removal of wax deposited on an inner wall in contact with a fluid stream. The method includes the steps of cooling the inner wall and the fluid stream to a temperature of or below the wax appearance temperature, enabling wax to dissolve and precipitate on the inner wall, and heating of the inner wall for a short period of time to release the deposited wax from the surface of the inner wall, mainly in the form of solid parts. The thickness of wax deposits in a pipe section can be determined by computing the temperatures obtained upstream and downstream in the said pipe section, before and after applying heat pulse. | 12-02-2010 |
20100292349 | PROCESS - A process for the preparation of at least one ARN acid or salt thereof comprising: (I) allowing at least one ARN acid salt to form during the production of crude oil in the presence of water; (II) removing at least 5 wt % of the formed at least one ARN acid salt, e.g. from the oil water interface; and optionally (III) converting said salt into an acid. | 11-18-2010 |
20100262387 | METHOD AND EQUIPMENT FOR DETERMINING THE INTERFACE BETWEEN TWO OR MORE FLUID PHASES - A method and equipment are provided for determining the level/height, of one or more interfaces between two or more fluid phases of different density that are contained in a vessel, tank or the like. The position of the different interfaces in a tank is determined by measuring the pressure thereby determining the density of the fluid over the height of the tank by using a pressure measuring rod, equipped with pressure sensors, positioned in the tank. A mathematical model or algorithm is used which calculates how the density and hence the pressure vary over the height of the tank as a function of the fluid properties of the respective fluids in the tank, the interface, on the basis of the density being the same within each layer of the respective fluid, as a respective point at which the density changes from one layer to the next in the tank. | 10-14-2010 |
20100186591 | SYSTEM AND PROCESS FOR HANDLING A CO2 COMPRISING WASTE GAS AND SEPARATION OF CO2 - A system and method for handling waste gas including separation of CO | 07-29-2010 |
20100128561 | SEAFLOOR-FOLLOWING STREAMER - Seismic exploration techniques and the seismic imaging of subsurface layers, particularly apparatus for seismic exploration near the seafloor, are disclosed. The apparatus enables controlled depth towing of detectors to be carried out a short distance above the seafloor. The apparatus includes a streamer depth controller and at least one altitude keeper device, attached at intervals along the length of a towed streamer. The streamer carries detectors for measuring, for example, P- and S-waves in the seafloor. | 05-27-2010 |
20090291030 | Method and apparatus for the production of particulate carbon products - This invention relates to a method for the production of particulate carbon products in a reactor vessel wherein gas flow between a gas inlet port and a gas outlet port suspends a bed of catalyst-containing particulate material in said vessel and wherein the product is discharged from said vessel by falling from the bed. | 11-26-2009 |
20090280912 | COUPLING DEVICE - Coupling device ( | 11-12-2009 |
20090263877 | METHOD OF FERMENTATION - The invention provides a process for the production of biomass by culturing a microorganism in an aqueous liquid culture medium circulating in a loop reactor having an effluent gas removal zone where from carbon dioxide-containing effluent gas is removed from the reactor and upstream thereof a degassing zone in which a driving gas is introduced to drive carbon dioxide in the liquid phase into a separable effluent gas phase and having upstream of said degassing zone a nutrient gas introduction zone in which oxygen is introduced into the reactor and mixed with the liquid culture medium therein, characterized in that oxygen introduction in said nutrient gas introduction zone is effected at a plurality of locations along the flow path through said loop reactor at a rate such that the average dissolved oxygen content of said liquid culture medium measured using a polarographic oxygen electrode does not exceed 25 ppm. | 10-22-2009 |
20090219783 | Method of Conducting a Seismic Survey - A method of conducting a seismic survey of an area including a region of high seismic velocity regimes in a shallow overburden. According to the method, a zone is identified in which the boundary of the high seismic velocity region has a substantially constant critical angle and a course is plotted through the identified zone. A zone based directional seismic source is applied sequentially, with a directivity angle equal to or close to the measured critical angle. The response is detected using receivers. | 09-03-2009 |
20090200202 | Ring opening process - A single stage process for desulfurization and ring opening of a sulphur containing hydrocarbon feedstock comprising:
| 08-13-2009 |
20090163385 | Well Treatment Process - The invention provides a method for the treatment of a hydrocarbon well which method comprises administering, down said well, polymeric particles having covalently bound to a polymeric component thereof a well treatment chemical or a precursor thereof, wherein the particles contain covalent bonds scissile in an aqueous environment to release or expose said chemical or precursor. | 06-25-2009 |
20090014178 | Well treatment - The present invention provides a method for the treatment of a subterranean formation which contains sand particles, said method comprising contacting said formation with a positively charged polymer capable of increasing the residual matrix strength of said sand particles whereby to reduce or prevent their migration whilst minimising any decrease in the permeability of said formation. Polymer materials suitable for use in the method of the invention include polyaminoacids, poly (diallyl ammonium salts) and mixtures thereof. | 01-15-2009 |
20090001727 | Process for Production of Electric Energy and Co2 From a Hydrocarbon Feedstock - The present invention relates to a process for production of electric energy and CO | 01-01-2009 |
20080316496 | Method and Apparatus For Studying Surface Vibrations by Moving Speckle Interferometer - A method of studying a surface using an interferometer, in which there is relative motion between the surface and the interferometer, the motion having a total velocity V | 12-25-2008 |
20080283254 | METHOD FOR INCREASED OIL RECOVERY FROM AN OIL FIELD - A method for increasing oil recovery from an oil reservoir in which method surplus gas streams from a plant for synthesis of higher hydrocarbons from natural gas is injected into the reservoir, is described. The surplus streams from the plant is the tailgas from the synthesis and optionally nitrogen from an air separation unit which delivers oxygen or oxygen enriched air to the plant for synthesis of higher hydrocarbons. | 11-20-2008 |
20080256959 | Vessel - A water-going liquefied carbon dioxide (LCD) transport vessel comprising a pressurised and refrigerated LCD container, a cargo discharge pump within said container for pumping LCD out of said container along a conduit, a booster pump for pumping LCD along the conduit to a platform, a first backflow line downstream of the cargo pump to the container, a second backflow line from downstream of the booster pump to the container, and optionally a heater arranged to heat LCD flowing from said vessel along the conduit. | 10-23-2008 |
20080221795 | Processing Electromagnetic Data - A method for processing multi-component, multi-offset electromagnetic data measured at at least one multi-component receiver, the data representative of electric and magnetic fields due to a source, the at least one multi-component receiver being disposed at a depth greater than that of the source. The method includes decomposing the measured multi-offset electric and magnetic fields into upgoing and downgoing components; and formulating a noise removal operator from the downgoing components and the properties of the medium surrounding the at least one receiver. | 09-11-2008 |
20080210856 | Fingerprinting of Complex Hydrocarbon Containing Mixtures - The invention provides a method of analysing a complex hydrocarbon-containing mixture, the method comprising the steps of: obtaining a liquid sample of the complex hydrocarbon-containing mixture; injecting the sample into a liquid carrier flowing to a mass spectrometer, wherein the mass spectrometer is set so as to ionise molecules in the sample without causing fragmentation thereof; recording a mass spectrum for ions obtained from the sample; and using the mass spectrum to obtain fingerprint of the mixture. {dot over (a)}In one embodiment, two or more mass spectra are recorded and are combined to obtain a fingerprint of the mixture. | 09-04-2008 |