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41. 发明授权

US11428560B2 Estimating flow rate at a pump 有权
公开(公告)号：US11428560B2
公开(公告)日：2022-08-30
申请号：US15765381
申请日：2016-10-05
申请人： STATOIL PETROLEUM AS
发明人： Kjetil Fjalestad , Dinesh Krishnamoorthy
IPC分类号： G01F1/88 , G01F1/74 , G01F1/34 , G01F1/86 , F04D13/10 , F04D15/00 , G01F15/02 , G01F25/10
摘要： A method for determining an estimated flow rate of fluid flow in a pump comprises: obtaining measurements of the pressure and temperature of fluid at the intake to the pump, the pressure and temperature of the fluid at the discharge from the pump, and the electrical power supplied to the pump; determining values representing either the density of the fluid and the specific heat capacity of the fluid, or the specific fluid enthalpy based on measurements and/or historical data; and calculating an estimated efficiency of the pump and an estimated flow rate of the fluid based on the measured electrical power, the measured temperatures, the measured pressures, the determined value for density and the determined value for specific heat capacity or the determined value for specific fluid enthalpy.

42. 发明授权

US11092707B2 Determining a component of a wave field 有权
公开(公告)号：US11092707B2
公开(公告)日：2021-08-17
申请号：US16871771
申请日：2020-05-11
申请人： STATOIL PETROLEUM AS
发明人： Sheng Xu , Hongbo Zhou
IPC分类号： G01V1/30 , G01V99/00
摘要： There is described embodiments relating to a method of determining a wave field in an anisotropic subsurface of the Earth. The method includes numerically solving a decoupled quasi-acoustic single wave mode wave equation based on spatially varied anisotropic parameters, to determine the wave field in the anisotropic subsurface.

43. 发明授权

US11085274B2 Method and system for the optimisation of the addition of diluent to an oil well comprising a downhole pump 有权
公开(公告)号：US11085274B2
公开(公告)日：2021-08-10
申请号：US15769997
申请日：2015-10-22
申请人： STATOIL PETROLEUM AS
发明人： Alexey Pavlov , Kjetil Fjalestad
IPC分类号： E21B41/00 , E21B43/12 , E21B43/25 , E21B47/00
摘要： A system for optimising injection of a diluent to one, some or all of one or more wells comprising a downhole pump and holding means for the diluent, said holding means being connected to the or each well via one or more injection lines through which the diluent may be pumped by diluent injection means, characterised in that said system comprises measurement means for real time measurement of one or more production performance parameters, and measurement of the rate of injection of the diluent; and means for optimising the injection of the diluent to at least one of said one or more wells on the basis of: (i) means for making controlled variations of the diluent injection into the at least or each well; (ii) means for the processing of the real time measurements of the production performance parameters affected by these variations to determine any necessary adjustment of the injection of the diluent towards an optimal value; and (iii) if required, making the corresponding physical adjustment of the injection of the diluent in order to bring production performance closer to the optimal point, as well as a method for said optimisation.

44. 发明授权

US10895121B2 System and method for monitoring the state of a choke valve in a managed pressure drilling system 有权
公开(公告)号：US10895121B2
公开(公告)日：2021-01-19
申请号：US15756874
申请日：2016-09-02
申请人： STATOIL PETROLEUM AS
发明人： Henrik Manum , Qin Li
IPC分类号： E21B21/08 , E21B21/10 , F16K37/00 , G01F1/74 , G01F15/00 , G01L13/00 , G01L19/00 , G01N9/36
摘要： A method of monitoring the state of a choke valve in a managed pressure drilling system using a valve state parameter to represent the state of the choke valve includes measuring the flow rate of a material across the choke valve, measuring the pressure differential of the material across the choke valve, obtaining a valve characteristic of the choke valve, and calculating the valve state parameter using the flow rate, the pressure differential and the valve characteristic.

45. 发明授权

US10571048B2 Direct tie-in of pipelines by added curvature 有权
公开(公告)号：US10571048B2
公开(公告)日：2020-02-25
申请号：US15548046
申请日：2016-02-22
申请人： Statoil Petroleum AS
发明人： Geir Endal , Jens Haugen
IPC分类号： F16L1/26 , F16L1/24 , E21B43/01 , F16L1/23 , F16L1/20
摘要： A method and apparatus for direct tie-in of pipelines are disclosed. An apparatus is attached to a portion of a pipeline, the apparatus including a tensioning member and a buoyancy element attached to the tensioning member such that, when submerged, the pipeline is deflected as a result of a buoyancy force tensioning the tensioning member, and on releasing the buoyancy element, direct tie-in of the pipeline is performed.

46. 发明授权

US10556210B2 Prevention of surge wave instabilities in three phase gas condensate flowlines 有权
公开(公告)号：US10556210B2
公开(公告)日：2020-02-11
申请号：US15120909
申请日：2014-02-24
申请人： STATOIL PETROLEUM AS
发明人： Magnus Nordsveen , Robert Orr , Bjørn Meland , Terje Sira
IPC分类号： B01D47/00 , B01D53/14 , B01F17/00
摘要： There is provided a process for the prevention or reduction of surge wave instabilities during the transport in a flowline of a three phase gas condensate comprising a gas phase, an aqueous phase and a condensate phase, characterized in that a dispersing agent is added to the three phase gas condensate which is able to disperse the aqueous phase in the condensate phase or the condensate phase in the aqueous phase, and a means for the prevention or reduction of surge wave instabilities during the transportation of a three phase gas condensate.

47. 发明授权

US10481289B2 Logging system and method for evaluation of downhole installation 有权
公开(公告)号：US10481289B2
公开(公告)日：2019-11-19
申请号：US15539308
申请日：2015-12-21
申请人： STATOIL PETROLEUM AS
发明人： Ioan-Alexandru Merciu
IPC分类号： G01V1/50 , E21B47/00 , E21B33/14 , G01V1/44 , G01V1/48
摘要： A downhole installation comprises: a first pipe layer 8, a second pipe layer 10 about the first pipe layer 8, an annulus 12 between the first pipe layer 8 and the second pipe layer, and a geological formation outside of the second pipe layer 10. A logging system for evaluation of the downhole installation comprises: a logging tool 4 including an angled acoustic transmitter 20 for exciting a flexural wave in the first pipe layer 8, and three or more 10 angled acoustic receivers 14, 16, 38, 40, 42 spaced apart along the tool 4 such that, in use, the receivers are at different locations along the length of the pipe layers 8, 10, the receivers 4, 16, 38, 40, 42 each being for obtaining third interface echo data from the second pipe layer 10; and a processor arranged to process acoustic data from the receivers in order to: identify trends in the amplitude of the third interface echo as it propagates along the length of 1 the pipes, calculate an estimated exponential decay for the third interface echo when reinforcement from other acoustic energy is disregarded, use this estimation to predict if the material behind the second pipe layer 10 is fluid or solid, and analyze the third interface echo data in light of the determined material state in order to thereby evaluate material conditions in the annulus 12 outside the second pipe layer 10.

48. 发明授权

US10457849B2 Method for controlling scale formation 有权
公开(公告)号：US10457849B2
公开(公告)日：2019-10-29
申请号：US15112029
申请日：2014-01-16
申请人： Statoil Petroleum AS
发明人： Nasser Ghorbani , Tore Tjomsland , Arnd Wilhelms
IPC分类号： C09K8/528 , E21B37/06 , E21B33/12 , E21B34/06 , E21B43/34
摘要： The present invention provides, a method of controlling scale formation in a hydrocarbon producing system, comprising; (i) injecting nanoparticles into said system to function as nuclei for scale growth; (if) allowing scale growth to occur on said nanoparticles to produce nanoparticles comprising scale; and. (in) optionally recovering said nanoparticles comprising scale.

49. 发明授权

US10385642B2 Method of lowering an apparatus 有权
公开(公告)号：US10385642B2
公开(公告)日：2019-08-20
申请号：US15529808
申请日：2015-11-26
申请人： STATOIL PETROLEUM AS
发明人： Kjell Einar Ellingsen
IPC分类号： E21B33/037 , E21B41/00 , E21B19/00
摘要： A method of lowering an apparatus (1) through a body of water comprising lowering a guiding element (25) and a weight (27) through the body of water, the lower end of the guiding (element 25) being attached to the weight (27) such that the guiding element (25) is under tension and is maintained in a generally vertical orientation when in its lowered position, and lowering the apparatus (1) through the body of water while being guided by the guiding element.

50. 发明授权

US10384288B2 Underwater connection operations 有权
公开(公告)号：US10384288B2
公开(公告)日：2019-08-20
申请号：US15025133
申请日：2013-09-27
申请人： STATOIL PETROLEUM AS
发明人： Kjell Edvard Apeland , Jan Olav Berge , Greg Firth , Michael Armstrong
IPC分类号： B23K9/00 , F16L1/26 , B23K9/028 , B23K9/32 , B23K101/10
摘要： There is described a method and associated apparatus for connecting a structure to equipment underwater, in particular for connecting a flange to a pipe under water. The pipe is provided under water, and a welding machine is provided in a welding space provided through a section of the pipe, and used to weld the flange to the end of the pipe, for example by internal metal inert gas welding.

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