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公开(公告)号：EP3135854A1
公开(公告)日：2017-03-01
申请号：EP15460053.0
申请日：2015-08-24
发明人： Szewczuk, Pawel , Bolewski, Lukasz , Lubinski, Jacek , Szkodo, Marek , Karpinski, Bartlomiej , Kmiec, Mateusz , Antoszkiewicz, Michal
CPC分类号： E21B10/42 , E21B10/54 , E21B10/602 , E21B17/14 , E21B31/03
摘要： The invention relates to a drilling tool (1) for maintaining a borehole and for cutting rock material, comprising a hollow elongated body (2) in a form of a pipe, provided with a plurality of cutting blades (3) arranged around the body (2) in such a way that they protrude from the external surface of the body (2). The tool is characterised in that the cutting blades (3) are shaped as bands (4), the ends of which are connected to the body (2), and the central part of the cutting blades (3) between the ends protrudes from the body (2), wherein the cutting blades (3) are grouped into sets (5) arranged on the periphery of the body and placed one above the other, and angularly offset relative to each other; each cutting blade (3) in the set (5) is remote from the axis of the body (2) of the drilling tool (1) by a dimension larger than the dimension of the distance from the axis of the body (2) of the cutting blade (3) located directly under it; the body (2) is provided with slots (6) connecting the interior of the body (2) to its external surface and arranged radially under the cutting blades (3), and not connected to the cutting blades (3); under the sets of the cutting blades (4), there is a lateral channel (11) through which the drilling fluid along with the cut rock material flow.
摘要翻译： 本发明涉及一种用于保持钻孔并用于切割岩石材料的钻孔工具（1），该钻孔工具包括呈管状形式的中空细长主体（2），该中空细长主体设置有围绕主体布置的多个切割刀片（3） 2）以使得它们从主体（2）的外表面突出。 该工具的特征在于，切割刀片（3）被成形为带（4），其端部连接到主体（2），并且切割刀片（3）的在端部之间的中央部分从 （2），其中所述切割刀片（3）被分组为布置在所述本体的周边上并且一个在另一个之上放置并且相对于彼此成角度地偏移的组（5）; 组件（5）中的每个切割刀片（3）远离钻具（1）的主体（2）的轴线的尺寸大于距离主体（2）的轴线的距离的尺寸 切割刀片（3）位于其正下方; 所述主体2设置有将所述主体2的内部连接到其外表面并且径向布置在所述切割刀片3下方并且不连接到所述切割刀片3的狭槽6。 在切割刀片组（4）的下面，有一个侧向通道（11），钻井液与切割的岩石材料一起流过。
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公开(公告)号：EP2823133B1
公开(公告)日：2016-09-28
申请号：EP13758073.4
申请日：2013-03-04
申请人： Well Technology AS
发明人： LARSEN, Arne, Gunnar , ANDERSEN, Patrick , JENSEN, Roy, Inge , DAHL, Arnt, Olav , MYHRE, Morten
CPC分类号： E21B31/16 , E21B29/002 , E21B31/03
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公开(公告)号：EP2603659A2
公开(公告)日：2013-06-19
申请号：EP11741245.2
申请日：2011-08-10
申请人： Mincon International
发明人： PURCELL, Joseph
CPC分类号： E21B4/14 , E21B10/38 , E21B21/103 , E21B31/03
摘要： The present invention provides an attachment (1) for a fluid-operated percussion drill tool (2), the drill tool having a backhead assembly (4) for attachment to a drill rod (10). The attachment comprises a shaft (3) attachable to the backhead assembly, wherein the shaft comprises a central bore (16) in fluid communication with a pressure bore of the drill rod. The attachment further comprises a sleeve (5) co-axially slidably mounted on the shaft, the sleeve comprising an outer shoulder (7) at a rear end thereof, and at least one rearwardly-directed exhaust passage. Pressurised air is supplied from the central bore of the shaft to urge the sleeve rearwards into a closed position in which air is prevented from exhausting through the exhaust passage. When a restriction is encountered at the shoulder, the sleeve moves forward to an open position in which air is permitted to exhaust through the exhaust passage adjacent the restriction.
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公开(公告)号：EP1540129B1
公开(公告)日：2008-12-17
申请号：EP03763429.2
申请日：2003-07-10
发明人： BAIRD, Jeffery, D.
IPC分类号： E21B31/00 , E21B31/03 , E21B17/05 , E21B17/10 , E21B31/107
CPC分类号： E21B31/03 , E21B17/05 , E21B17/1014 , E21B31/00 , E21B31/107 , E21B37/02
摘要： A method and apparatus for allowing a downhole drill string to be stuck at one location and continue to rotate above the stuck section. The apparatus provides a method for collapsing the stuck subassembly by reducing its outside diameter. Simultaneous with the subassembly collapse, a jarring action is initiated from within the drill string to further loosen the stuck sections. At the same time drilling fluid inside the string is allowed to circulate outside the string through a circulation sub. The fluid is forced around the stuck subassembly further increasing the likelihood that the subassembly will be freed.
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公开(公告)号：EP1015729B1
公开(公告)日：2004-10-20
申请号：EP99934833.7
申请日：1999-07-22
发明人： PIETRAS, Bernd-Georg
摘要： An apparatus for facilitating the connection of tubulars using a top drive, which apparatus comprises a body (2; 102) connectable to said top drive, said body (2; 102) comprising at least one gripping element (5; 105) radially displaceable by hydraulic or pneumatic fluid to drivingly engage said tubular (30; 110) to permit a screw connection between said tubular and a further tubular to be tightened to the required torque.
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公开(公告)号：EP1002932A3
公开(公告)日：2002-07-24
申请号：EP99122060.9
申请日：1999-11-17
CPC分类号： E21B31/03 , E21B7/18 , E21B7/28 , E21B29/10 , F16L55/1658
摘要： Ein Verfahren zum grabenlosen Leitungsaustausch umfaßt für jede zu sanierende Abschnittslänge die Schritte des Vorantreibens mehrerer verlaufsgesteuerter Bohrungen (18) entlang und nahe des Umfangs der auszutauschenden Leitung (60) bis zu einer Zielgrube (52) hin, das drehstarre Anbringen des Spülkopfes (20) am Bohrgestänge (56) in der Zielgrube (52) und das Zurückziehen des Spülkopfes unter gleichzeitigem Austritt von Spülflüssigkeit bis zu einer Startgrube (50). Anschließend wird die auszutauschende Leitung (60) aus dem Erdkanal herausgezogen und der Erdkanal mit einem Stabilisiermittel verfüllt. Abschließend wird eine neue Leitung (66) eingezogen. Der zur Verwendung gelangende Spülkopf umfaßt eine Anbringeeinrichtung (28) zur drehstarren Befestigung an einem Bohrgestänge, das eine Zugrichtung in Längsrichtung des Bohrgestänges definiert sowie mehrere Austrittsdüsen (24) für Spülflüssigkeit am Spülkopf. Der Spülkopf kann entweder eine im wesentlichen einem Kreissegment entsprechende Querschnittsform senkrecht der Zugrichtung besitzen oder aber im wesentlichen zylinderförmig ausgebildet sein, wobei die Austrittsdüsen im Zylindermantel des Spülkopfes angeordnet sind.
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公开(公告)号：EP0764709A1
公开(公告)日：1997-03-26
申请号：EP96115143.8
申请日：1996-09-20
发明人： Patel, Arvind D.
CPC分类号： C09K8/04 , C09K2208/02 , C09K2208/34 , Y10S507/94
摘要： An essentially non-polluting, substantially non-toxic drilling fluid composition has been discovered that is particularly useful as a lubricant or spotting fluid in drilling oil and gas wells. The fluid comprises silicone which may be is mixed with an emulsifier for application in the water base mud system.
摘要翻译： 已经发现基本上无污染，基本上无毒的钻井液组合物特别可用作钻井油气井中的润滑剂或点样液。 流体包括可与乳化剂混合以用于水基泥浆系统中的硅树脂。
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公开(公告)号：EP0209343B1
公开(公告)日：1993-06-16
申请号：EP86305395.5
申请日：1986-07-14
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公开(公告)号：EP0324887B1
公开(公告)日：1993-05-05
申请号：EP88103865.7
申请日：1988-03-11
CPC分类号： C09K8/02 , Y10S507/94
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公开(公告)号：EP0287155A3
公开(公告)日：1989-11-15
申请号：EP88200654.7
申请日：1988-04-06
摘要： A directional drilling assembly comprises a downhole drilling motor and stabilizing means which stabilize the assembly in such a manner in the borehole that the bit driven by the output shaft of the motor has a tilted orientation in the hole. The stabilizing means comprise a lowermost stabilizer which is connected to the output shaft of the motor so as to suppress any sticking tendency of said stabilizer to the boreholewall.
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