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公开(公告)号：EP0787270A1
公开(公告)日：1997-08-06
申请号：EP95935622.0
申请日：1995-09-20
申请人： NORSK HYDRO a.s.
CPC分类号： F17C1/14 , B23K10/00 , B23K2201/12 , B23K2203/10 , F17C2201/0128 , F17C2203/0607 , F17C2203/0619 , F17C2203/0646 , F17C2203/0648 , F17C2205/018 , F17C2205/0308 , F17C2205/0329 , F17C2205/0394 , F17C2205/0397 , F17C2209/221 , F17C2209/232 , F17C2221/035 , F17C2223/0123 , F17C2223/0153 , F17C2223/033 , F17C2227/044 , F17C2260/011 , F17C2260/012 , F17C2270/0118 , F17C2270/0136
摘要： Pressure vessel made of aluminium for transport and storage of fluids. The vessel comprises two mainly semi-spherical, forged parts (2), that are joined together along their periphery by means of plasma welding. Each semi-spherical part is provided with a boss (4) that is formed under the forging operation, one or both of the bosses may be provided with passing bores (5) having internal threads for attaching a valve/valves thereto. Further, one or both of the bosses may be equipped with external threads for the attachment of protective caps (8), or one protective cap and a support leg.
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2.发明公开
公开(公告)号：EP0760897A1
公开(公告)日：1997-03-12
申请号：EP95921176.0
申请日：1995-05-30
申请人： NORSK HYDRO a.s.
CPC分类号： E21B27/02 , E21B33/138
摘要： Injector (1) for injecting a traceable material into an oil and/or gas reservoir, the injector being lowered down in a bore hole that is in communication with the reservoir, followed by activating an electro-hydraulic system to inject a traceable material stored in a container into the reservoir. The injector is provided with a gland plate (7) that seals the space between the injector and the wall of the bore hole (16) in a manner that pevents traceable material to be distributed in the bore hole, but secures direct injection of the material into the reservoir. The injector is adapted to be positioned at a specific depth level in the bore hole, and to be cleaned by pressurised liquid after the injection operation is fulfilled.
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3.发明公开
公开(公告)号：EP0858548A1
公开(公告)日：1998-08-19
申请号：EP96937595.0
申请日：1996-10-28
申请人： NORSK HYDRO a.s.
CPC分类号： E21B34/06 , E21B43/086
摘要： Inflow regulation device for a production pipe for production of oil or gas from an oil- and/or gas reservoir (9), where the production pipe comprises a lower drainage pipe with drainage pipe sections (5) with one or more drainage pipe elements (2; 2a, 2b) having opening(s) (3; 3a, 3b) for inflow of oil and/or gas to an inner space (8) of the drainage pipe section. The inflow may be regulated by a movable sleeve (1) that abuts one adjacent side surface of the drainage pipe section (2; 2a, 2b) and where the sleeve is provided with a portion(s) (6) being able to cover/uncover the opening(s) in the drainage pipe element. The sleeve further comprises helical spurs/recesses (14, 15) that in conjunction with one adjacent abutting surface (18, 21) of the drainage pipe element (2; 2a, 2b) forms channels (16, 17) that may connect the reservoir (9) with the inner space (8) of the drainage pipe. The helical spurs/recesses (14, 15) may be constituted by one or more pair(s) of left- and/or right-oriented spurs/recesses. The sleeve (1) is axially movable by a double-acting ring piston device (21, 22) or by thread means (12, 13) arranged between the sleeve (1) and the drainage pipe element (2; 2a, 2b).
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公开(公告)号：EP0772728A1
公开(公告)日：1997-05-14
申请号：EP95910021.0
申请日：1995-02-14
申请人： NORSK HYDRO a.s.
CPC分类号： E21B23/00 , E21B4/00 , E21B4/18 , E21B2023/008
摘要： A locomotive or tractor (3) for pulling wire/cable-operated equipment such as measuring, logging and processing equipment in a borehole, pipe etc., comprising a long body with means of propulsion, including one or more motors for propelling the tractor. The means of propulsion consist of at least one set of rollers (13), which can be rotated and are axially inclined in relation to the tractor, with a rounded surface which has a number of sharp parts or edges; the set of rollers (13) are arranged in connection with a driven unit (8), which rotates externally in relation to the support structure (16) of the tractor and which is provided with means (14) which are designed to move the rollers in a radial direction and press them (13) against the wall of the borehole or pipe wall. The tractor is also provided with at least one set of control wheels (31), which are freely supported in relation to the tractor, which can be moved, by means of other means (32, 33), in a radial direction in relation to the tractor and which are designed to roll along the pipe wall or wall of the borehole and keep the tractor centrically oriented in relation to the pipe or borehole and prevent the tractor from rotating.
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