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11. 发明申请

WO2021125966A1 WIND TURBINE CONTROL 审中-公开
公开(公告)号：WO2021125966A1
公开(公告)日：2021-06-24
申请号：PCT/NO2020/000006
申请日：2020-12-21
申请人： EQUINOR ENERGY AS
发明人： SKAARE, Bjørn
IPC分类号： F03D7/02 , F03D13/25
摘要： A controller for a floating wind turbine comprising a rotor with a plurality of rotor blades connected to a generator is provided. The controller comprises: an active damping controller for calculating one or more outputs for damping both a first motion of the floating wind turbine in a first frequency range and a second motion of the floating wind turbine in a second frequency range based on an input of the first motion and an input of the second motion; wherein the controller is arranged to calculate an output for controlling a blade pitch of one or more of the plurality of rotor blades and/or for controlling a torque of the generator based on an actual rotor speed, a target rotor speed, and the one or more outputs from the active damping controller such that both the first motion and the second motion will be damped. A method of controlling a floating wind turbine is also provided.

12. 发明申请

WO2021054838A1 APPARATUS AND METHOD FOR DRILLING CUTTINGS CHARACTERISATION 审中-公开
公开(公告)号：WO2021054838A1
公开(公告)日：2021-03-25
申请号：PCT/NO2020/050236
申请日：2020-09-14
申请人： EQUINOR ENERGY AS
发明人： HJULSTAD, Åsmund
IPC分类号： E21B49/00 , G01N21/71 , G01V8/10 , G01N21/01 , G01N21/31
摘要： A system and a method of hyperspectral inspection of drill cuttings in the return path (1) from a downhole drilling process, the method comprising, imparting kinetic energy to the drill cuttings, performing hyperspectral imaging of the emission spectra of the drill cuttings to which kinetic energy has been applied.

13. 发明申请

WO2021040534A1 APPARATUS AND METHOD FOR REMOVING SOIL FROM A CONDUIT 审中-公开
公开(公告)号：WO2021040534A1
公开(公告)日：2021-03-04
申请号：PCT/NO2020/050218
申请日：2020-08-27
申请人： EQUINOR ENERGY AS
发明人： REINÅS, Lorents , SÆTHER, Morten , NESSE, Harald Sigurd , ELLINGSEN, Kjell Einar , STANGELAND, Jone , FUHR, Geir Gundersen
IPC分类号： E02D17/16 , E02D27/10
摘要： An apparatus for removing soil from a conduit for a subsea well that is forced or placed into a seabed is provided. The apparatus comprises a soil disturbance device to displace soil within the conduit before drilling is performed. A method of removing soil from a conduit for a subsea well that is forced or placed into a seabed is also provided. The method comprises using a soil disturbance device to displace soil within the conduit before drilling is performed.

14. 发明申请

WO2020246899A1 CONTROLLING THE TEMPERATURE OF INJECTION WATER FOR RESERVOIR PRESSURE SUPPORT 审中-公开
公开(公告)号：WO2020246899A1
公开(公告)日：2020-12-10
申请号：PCT/NO2020/050147
申请日：2020-06-08
申请人： EQUINOR ENERGY AS
发明人： JOHNSEN, Cecilie Gotaas , SVEBERG, Knut
IPC分类号： E21B43/16 , E21B43/20 , E21B43/40
摘要： A system 100 for supporting the pressure of a subsea hydrocarbon reservoir, the system comprising: an inlet 2 for receiving produced fluid from a subsea hydrocarbon reservoir; a seawater inlet for receiving seawater from the sea; a heat exchanger 14 for heating the seawater using heat from the produced fluid; and injectors 3a for injecting the heated seawater into the subsea hydrocarbon reservoir.

15. 发明申请

WO2020180191A1 ESTIMATING ELECTRICAL PERMITTIVITY 审中-公开
公开(公告)号：WO2020180191A1
公开(公告)日：2020-09-10
申请号：PCT/NO2020/050053
申请日：2020-02-28
申请人： EQUINOR ENERGY AS
发明人： STALHEIM, Stein Ottar
IPC分类号： G01V3/30 , E21B47/00 , G01V3/38 , G01V3/18
摘要： A method of determining the electrical permittivity (I) of a region of a subsurface formation surrounding a drilled borehole, the method comprises: obtaining an assumed electrical permittivity ε LWD ; obtaining resistivity data comprising a first resistivity value R p determined by analysing the phase delay δ of an electromagnetic signal traversing said region and a second resistivity value R a determined by analysing the attenuation α of the electromagnetic signal traversing said region; and calculating the electrical permittivity of the region from the first and second resistivity values and the assumed electrical permittivity by applying a plane wave approximation to the propagation of said electromagnetic signal across said region.

16. 发明申请

WO2020130846A1 POUR POINT AVOIDANCE IN OIL/WATER PROCESSING AND TRANSPORT 审中-公开
公开(公告)号：WO2020130846A1
公开(公告)日：2020-06-25
申请号：PCT/NO2019/050282
申请日：2019-12-18
申请人： EQUINOR ENERGY AS
发明人： SAMUELSBERG, Arild , JOHNSEN, Cecilie Gotaas , SOGGE, Jostein
IPC分类号： E21B43/12 , F17D1/17
摘要： A method of producing a fluid from a hydrocarbon well, the fluid comprising an emulsion of water and oil and where the proportion of water (water cut)6varies over time. The method comprises: determining whether the water cut of the produced fluid is within the oil/water inversion range; and when the water cut6is within the oil/water inversion range, adding water to the produced fluid in order to increase its water cut to above the oil/water inversion range. Thus, the fluid produced transitions from the water-in-oil phase to the oil-in-water phase without (at least significantly) entering the inversion phase.

17. 发明申请

WO2020055262A1 COILED TUBING OR SNUBBING STRING DRILLING 审中-公开
公开(公告)号：WO2020055262A1
公开(公告)日：2020-03-19
申请号：PCT/NO2019/050176
申请日：2019-09-05
申请人： EQUINOR ENERGY AS
发明人： NASVIK, Håvard
IPC分类号： E21B21/08
摘要： A method of drilling a borehole at an oil and gas installation uses a modified form of coiled tubing or snubbing string drilling. The method includes: circulating mud through a mud circuit during a drilling operation, wherein the mud circuit includes a topside mud lift pump 2 that elevates return mud up some or all of the height of a tower structure 6 of the installation before allowing it to flow under the influence of gravity around the mud circuit back to the borehole.

18. 发明申请

WO2019199173A1 METHODS AND SYSTEMS FOR FINITE-DIFFERENCE WAVE EQUATION MODELLING 审中-公开
公开(公告)号：WO2019199173A1
公开(公告)日：2019-10-17
申请号：PCT/NO2019/050059
申请日：2019-03-20
申请人： EQUINOR ENERGY AS
发明人： AMUNDSEN, Lasse , PEDERSEN, Ørjan
IPC分类号： G01V1/36
摘要： A computer implemented method of determining a seismic wavefield in a region of a subsurface of the Earth by eliminating temporal dispersion from a finite difference, FD, wavefield generated from seismic wave propagation data. The method comprises obtaining the FD wavefield containing temporal dispersion by solving a discretized wave equation using the seismic wave propagation data; transforming the FD wavefield from a time domain to a frequency domain using a Fourier transform; and inverse transforming the FD wavefield from the frequency domain using an inverse Fourier transform, wherein the inverse Fourier transform uses a modified frequency based on a temporal discretization of the FD wavefield, to give the seismic wavefield in the time domain.

19. 发明申请

WO2019182456A1 SUBSEA HYDROCARBON PRODUCTION SYSTEM 审中-公开
公开(公告)号：WO2019182456A1
公开(公告)日：2019-09-26
申请号：PCT/NO2019/050058
申请日：2019-03-19
申请人： EQUINOR ENERGY AS
发明人： BJORDA, Raimund , BUNÆS, Per Christian , MYHRE, Erling , NES, Hroar Andreas
IPC分类号： E21B43/01 , F16L1/16 , E21B41/08
摘要： A hydrocarbon production system comprises a foundation fixed to the sea floor, a manifold, a pipeline bundle connected to said manifold, and a guiding structure coupling the manifold to the foundation. The guiding structure is configured to allow the manifold to move in a given direction relative to the foundation while substantially preventing the manifold from moving in other directions.

20. 发明申请

WO2019103625A1 WELLHEAD LOAD RELIEF DEVICE 审中-公开
公开(公告)号：WO2019103625A1
公开(公告)日：2019-05-31
申请号：PCT/NO2018/050296
申请日：2018-11-27
申请人： EQUINOR ENERGY AS
发明人： OSEN, Per
IPC分类号： E21B33/038 , E21B33/037 , E21B41/08
摘要： A wellhead load relief device for reducing riser system induced load effects on a subsea wellhead is provided. The wellhead load relief device comprises: a receptacle for receiving a well control equipment, wherein the receptacle has an open top to permit the well control equipment to be received in the receptacle; and an adjustable support mechanism for rigidly supporting a well control equipment received in the receptacle, wherein the adjustable support mechanism is located within the receptacie of the wellhead load relief device and wherein the adjustable support mechanism has a lateral extent that is adjustable relative to the receptacle, and wherein the wellhead load relief device is for providing a load path for forces exerted on the well control equipment to the seabed without going via the subsea wellhead. A subsea wellhead assembly comprising the wellhead load relief device is also provided. A method of installing a subsea wellhead assembly onto a subsea wellhead using a wellhead load relief device, a method of moving a well control equipment from a first wellhead to a second wellhead together with the wellhead load relief device, and a method of uninstalling a well control equipment with the wellhead load relief device in place are also provided.

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