Abstract: The invention provides a method for the protection of internal filters of a LTFT slurry bubble reactor. The method includes the step of activating an emergency back-flush procedure during low slurry level conditions and/or during increasing temperature of an internal filter.

Abstract: A method for delivering a scale treatment agent to a hydrocarbon producing system. The method includes the steps of contacting the system with a foam comprising the scale treatment agent, and shutting the scale treatment agent in the system for at least 0.5 hour.

Abstract: A coupling device for connection and disconnection of bottomhole equipment includes a male part having a stinger with locking grooves and a female part includes a receptacle and a housing. The female part further includes a hold open sleeve below the receptacle, locking dogs arrange between the housing and the hold open sleeve, a locking sleeve arranged below the locking dogs, and a verifying bolt. By joining the male and female parts, the coupling device will lock automatically, as the hold open sleeve is pushed into the locking sleeve by the stinger, after which the locking dogs are pushed into the grooves of the stinger, after which the locking sleeve is pushed up over the locking dogs locking the locking dogs, after which the verifying bolt once the locking sleeve is in locking position will be pushed into an adapted opening in the locking sleeve, thereby verifying correct locking.

Abstract: An assembly for drilling and logging includes a device for electro pulse drilling (EPD device), at least one device to receive acoustic signals generated by the EPD device, distinguished in that the assembly further includes at least one device to receive electromagnetic signals generated by the EPD device. A method for drilling and logging, and device for electro pulse drilling.

Abstract: A method for control of liquid or liquid slugs in multi phase fluid pipelines, including a multiphase pipeline for the transportation of a fluid, consisting of mainly gas and some liquid such as water an/or gas condensate. The gas is evacuated via a gas separation unit connected to the multiphase pipeline to a second gas transport pipe, and the liquid is fed to a dedicated pipeline section acting as a buffer volume pipeline. The separation unit includes one or several vertical pipes connected at a distance from one another along the multiphase pipeline, whereby the gas is transported separately to a downstream processing facility on a platform or onshore or the like, and whereby the liquid proceeds to the loop which may preferably be an extension of the multiphase pipeline, or the liquid and gas may be re-combined and led in a common transport pipeline to the desired destination.

Abstract: The invention relates to a system for loading of hydrocarbons from a floating vessel, such as a FPSO or FSO vessel, to an export tanker, where the floating vessel is spread moored to a sea bottom, and where the export tanker during the loading phase is moored in such a way that the export vessel to a greater or less degree can weathervane dependent upon the prevailing weather, wave and/or wind conditions. According to invention the floating vessel at least at one end is provided with a rotatable deck which can be turned when the heading of the export tanker changes.

Abstract: A method is provided for analyzing data from an electromagnetic survey of a region so as to indicate the presence of a hydrocarbon reservoir. The survey provides vertical magnetic dipole data and electric dipole data, or provides measurement data from which these dipole data may be determined. The amplitude of the vertical magnetic dipole data is determined, optionally after normalising the data with reference date relating to the same region. Similarly, the amplitude of the electric dipole data is determined, optionally after similarly being normalised. The amplitudes are then compared to provide an indication of the likelihood of the presence of hydrocarbons in the region.

Abstract: A device (1) for formation testing while drilling. The device includes a drill string (2) with a packer (3) arranged on the drill-string (2) above a drilling-bit (7). The packer can be expanded and thereby isolate a lower open part (6) of a well-bore, distinguished in that the packer is fastened sealingly but slideably over a distance (4) of the well-bore, such that the drill-string can be moved up and down, with or without rotation, within the distance while the packer remains stationary due to being expanded in the well-bore. Also, the device includes at least one pressure transmitter for measuring and transferring in real-time to the surface measured pressure in the isolated lower open part of the well-bore. Methods for formation testing utilizing the device and a device for formation testing of a production well.

Abstract: A method in connection with a wind turbine installation for damping tower vibrations, in particular a floating wind turbine installation comprising a floating cell, a tower arranged over the floating cell, a generator mounted on the tower that is rotatable in relation to the wind direction and fitted with a wind turbine, and an anchor line arrangement connected to anchors or foundations on the sea bed. The tower's eigenvibrations, ?eig, are damped by, in addition to control with the controller in the constant power or RPM range of the wind turbine, an increment, ??, being added to the blade angle of the turbine blades on the basis of the tower velocities, ?Z, so that the eigenvibrations are counteracted.

Abstract: A method calculates the boundary layer level between fluids, in particular the boundary layer level between oil and water in connection with the use of a segment-based boundary layer meter. The calculations are based on the use of measurement signals from a number of segments, n, and the boundary layer level, L, of the water is calculated as follows: L = ? _ - ? 0 ? v - ? 0 ? ( L u - L l ) + L l where: Lu Upper water range area Ll Lower water range area ?n Density of segment no. n from the profile meter {circumflex over (?)}n Corrected density for segment no. n ? Calculated mean density ?v Mean density of water from the profile meter ?o Mean density of oil from the profile meter N Total number of segments included.

Abstract: A method for controlling a wind turbine installation for the damping tower oscillations, in particular a buoyant wind turbine installation comprising a buoyant body, a tower arranged over the buoyant body, a generator mounted on the tower that is rotatable in relation to the wind direction and fitted with a wind turbine, and an anchor line arrangement connected to anchors or foundations on the sea bed. The tower oscillations are damped by the control with the blade angle controller in the constant power or RPM range of the wind turbine being performed by the rotor velocity (which is the input to the blade angle controller) being estimated in an estimator for the wind turbine. The input to the wind turbine estimator is the estimated incoming wind, so that the tower movements are not visible to the blade angle controller.

Abstract: An essentially cylindrical deadleg having a first cross sectional area at one end of the deadleg and a second cross sectional area, the first cross sectional area being smaller than the second cross sectional area.

Abstract: The present invention provides a method for increasing the retention of a scale inhibitor within a hydrocarbon producing system (e.g. a subterranean formation), said method comprising contacting said system with a polymer formed from a diallyl ammonium salt and with said scale inhibitor, wherein said polymer formed from a diallyl ammonium salt has a molecular weight of greater than 50,000 (e.g. a molecular weight of 55,000 to 2,000,000).

Abstract: A method of moving a floating wind turbine relative to a body of water, the floating wind turbine having a buoyant body with a nacelle at the upper end thereof, including the steps of floating the floating wind turbine in the body of water, and towing the floating wind turbine whilst holding the buoyant body in an inclined position, whereby the nacelle is held clear of the water. As the wind turbine is held in an inclined position, it can be towed through regions of shallower water than if it were in a vertical position.

Abstract: An assembly for transient and continuous testing of an open portion of a well bore arranged in a lower part of a drill string includes at least two packers fixed outside of the drill string, which are expandable for isolating a reservoir interval. The assembly includes a down-hole pump, sample chamber, sensors, closing valve, sensors and telemetry for measuring and realtime transmission of flow rate, pressure and temperature of fluid flow from the reservoir interval, from the down-hole pump, in the drill string and in an annulus above the packers, a mud driven turbine or electric cable, and a circulation unit. The circulation unit, independent of the circulation rate for mud to the annulus, can feed formation fluid from the reservoir interval into the annulus, so that at any time a well can be kept in over balance and the mud can solve the formation fluid from the reservoir interval.

Abstract: The invention relates to a microorganism growth substrate which comprises a sterile nutrient composition derived from the biomass of a culture of bacteria including methanotrophic bacteria and further containing at least one sterile nutrient. A preferred biomass material is that derived from a microbial culture comprising Methylococcus capsulatus (Bath) (strain NCIMB 11132), Ralstonia sp. DB3 (strain NCIMB 13287) and Brevibacillus agri DB5 (strain NCIMB 13289), optionally in combination with Aneurinibacillus sp. DB4 (strain NCIMB 13288).

Abstract: A method of estimating thickness of a geological layer includes selecting seismic reflection field data from a subsurface depth interval of interest; providing a plurality of geological models having different layer thicknesses and providing respective model responses from the plurality of geological models; comparing a frequency spectrum of the seismic reflection field data with each of the frequency spectra of the model responses to derive comparison data associated with the different layer thicknesses of the models; and deriving from the comparison data a model layer thickness that is indicative of the thickness of the geological layer.

Abstract: A method for control of liquid or liquid slugs in multi phase fluid pipelines, including a multiphase pipeline for the transportation of a fluid, consisting of mainly gas and some liquid such as water an/or gas condensate. The gas is evacuated via a gas separation unit connected to the multiphase pipeline to a second gas transport pipe, and the liquid is fed to a dedicated pipeline section acting as a buffer volume pipeline. The separation unit includes one or several vertical pipes connected at a distance from one another along the multiphase pipeline, whereby the gas is transported separately to a downstream processing facility on a platform or onshore or the like, and whereby the liquid proceeds to the loop which may preferably be an extension of the multiphase pipeline, or the liquid and gas may be re-combined and led in a common transport pipeline to the desired destination.

Abstract: A method is provided for processing marine controlled source electromagnetic data. Inline and broadside marine controlled source electromagnetic data are provided, for example by means of one or more horizontal electric dipoles and one or more receivers disposed in a water column above a subsurface to be surveyed. A linear combination of the inline and broadside data is formed so as to reduce the airwave content.

Abstract: The invention is a multi-purpose icebreaker having main propulsion devices in the front part of the vessel and steering device in the aft part of the vessel. This kind of icebreaking vessel has excellent steering characteristics and it can efficiently and constantly push the ice field. The main propulsion devices at the bow are azimuth propulsion devices or conventional shaft propulsion devices. The steering devices are tunnel thrusters or smaller azimuth thrusters.