专利检索_ .磨损防护器;扶正装置例如稳定器专利检索_ .磨损防护器;扶正装置例如稳定器专利检索查询

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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
241	Decentring method and apparatus, especially for multilateral wells	EP95305916.9	1995-08-24	EP0701042B1	2003-04-02	Williamson, Jimmie Robert; Reesing, David Lynn; Gano, John C.

242	Multilateral well drilling and completion method and apparatus	EP02077722.3	1995-08-24	EP1249574A2	2002-10-16	Longbottom, James R.; Cox, Don C.; Gano, John C.; Welch, William R.; White, Pat M.; Nivens, Harold Wayne; Jacquier, Richard Charles; Holbrook, Paul David; Freeman, Tommie Austin; Mills, David H.
Multilateral wells and improved multilateral well structures are made by setting a diverter (332) at a prescribed position and a prescribed orientation in a main well flow conductor (120) located within a main wellbore (110), boring through a sidewall of the main well flow conductor (120) and into a material (112) surrounding the main well flow conductor (120), the boring creating a window (324) having a particular shape in the sidewall, the orientation of the diverter (332) determining a lateral position of the window in the main well flow conductor (120), a lateral wellbore (150) thereby being formed in the material and extending from the main wellbore (110), and lining the lateral wellbore (150) with a liner (340), the liner having an interface end (342), the interface end being adapted to contact a periphery of the window (342) in the sidewall, and cementing the liner (340) in place within the lateral wellbore (150). The step of cementing creates a pressure-bearing seal between the periphery of the window and the interface end (342) of the liner (340). The method allows multiple lateral wellbores to be joined to the main wellbore and provides for connectivity among main and lateral wellbores, pressure-bearing sealing of joints to allow selective isolation of one or more wellbores or portions thereof and subsequent wellbore access for rework or other purposes.
243	Locating and orienting system and use in multilateral wells	EP02076706.7	1995-08-24	EP1233144A2	2002-08-21	Williamson, Jimmie Robert; Reesing, David Lynn; Gano, John C.
A downhole diverter (130) is decentralized by sliding first (116) and second (118) coaxial tubes relatively, one tube (118) having a conical ramp (115) thereon and the other (116) having a shoulder (119) thereon and a decentralizing ring (112,114) between the shoulder (119) and the ramp (115) so that, as the ring is urged by the shoulder (119) onto the ramp (115), it expands eccentrically to decentralize the two tubes, thereby decentralizing the diverter (130) to which they are attached. A centralizing guide, and a downhole deployable locating and orienting sub-system are also described.
244	Guide bushing and use in multilateral wells	EP02076707.5	1995-08-24	EP1233142A2	2002-08-21	Williamson, Jimmie Robert; Reesing, David Lynn; Gano, John C.
A downhole diverter (130) is decentralized by sliding first (116) and second (118) coaxial tubes relatively, one tube (118) having a conical ramp (115) thereon and the other (116) having a shoulder (119) thereon and a decentralizing ring (112,114) between the shoulder (119) and the ramp (115) so that, as the ring is urged by the shoulder (119) onto the ramp (115), it expands eccentrically to decentralize the two tubes, thereby decentralizing the diverter (130) to which they are attached. A centralizing guide, and a downhole deployable locating and orienting sub-system are also described.
245	A DRILL PIPE AND METHOD OF FORMING AND RECONDITIONING A DRILL PIPE	EP99901246.1	1999-01-05	EP1045958A1	2000-10-25	MURRAY, Geoffrey Neil
A drill pipe (1; 12) has a journal (2; 15) formed thereon. Integrally formed stop collars (10, 11; 16, 17) are provided at each end of the journal (2; 15). The arrangement enables rotatable tools (18) to be fitted directly to a journal (2; 15) to reduce friction between the rotatable tool (18) and the journal (2; 15). The journal (2; 15) may be of a substantially greater length than the length of the rotatable tool (18) to facilitate lubrication and cooling. Alternatively removable stop collars (30; 31) are secured adjacent the ends of a journal (28) formed on the drill pipe (25). Methods of forming the journal surface (2; 15) during manufacture of a drill pipe are disclosed. There are also disclosed methods for reconditioning an existing drill pipe (20) to form a journal (21) thereon.
246	REAMING APPARATUS WITH ENHANCED STABILITY AND TRANSITION FROM PILOT HOLE TO ENLARGED BORE DIAMETER	EP97911656.0	1997-10-08	EP0865561A1	1998-09-23	DOSTER, Michael, L.; PESSIER, Rudolph, C., O.; SCHNELL, David, M.; MCDONALD, Bart, T.
A method and apparatus for reaming or enlarging a borehole with enhanced stability. A pilot stabilization pad (PSP) having an axially and circumferentially tapered entry surface (226) and a circumferential transition surface (222) above is employed to enhance the transition from the smaller diameter borehole to be enlarged while accommodated the side force vector generated by the cutting assembly used to effect the enlargement. In addition, one or more eccentric stabilizers are employed above the reaming apparatus to laterally or radially stabilize the bottomhole assembly, which may comprise either a straight-hole or steerable, motor-driven assembly.
247	Downhole diverter and retrieving tool therefor	EP95305918	1995-08-24	EP0701040A3	1998-05-06	WALTER JEFFREY S; JONES DESMOND; GANO JOHN C
A diverter for use in a subterranean well has a body (12) having a lower portion (14) adapted to be coupled to a diverter anchoring structure and an upper portion (16) having a slanted diverting surface (18), the slanted diverting surface (18) being adapted to redirect an object lowered in the borehole and coming into contact therewith into a lateral borehole. The diverter includes a compliant spring member (26) associated with the slanted diverter surface (18), the spring member being resiliently retractable toward the slanted diverter surface to allow the object to traverse the junction and enter the lateral borehole. The diverter (10) is configured to receive a flexible finger of a retrieving tool into a central longitudinal shaft (22) therein to engage and retrieve the diverter (10) without having to orient the retrieving tool.
248	Eccentric fluid displacement sleeve	EP94308186.9	1994-11-07	EP0654583A3	1995-10-18	Harvey, Peter R.; Biglin, Denis P.; Babek, James; Findlay, George S.
An eccentric fluid displacement sleeve (40',40'') is disclosed for use with a measurement-while-drilling instrument (10), to convert the instrument for use in different size boreholes. The sleeve is made eccentric by either increasing or decreasing the thicknesses of positioning blades (44',44'',46',46'') on the periphery of the sleeve, while maintaining the thickness of the fluid displacement blade (42',42'') aligned with the detectors (14,16).
249	PIPE SYSTEM WITH ELECTRICAL CONDUCTORS	EP90917182.9	1990-11-23	EP0500709B1	1994-04-20	MOHN, Frank
A pipe system comprises a plurality of pipe members (2), mechanical connections at the end regions of the pipe members whereby the pipe members can be connected together into end-to-end relationship to provide at least one fluid flow path along them, and electrical conductors (10; 110) carried by the pipe members, the electrical conductors having contract areas (19) exposed at the end regions of the pipe members so that electrical connection between the conductors of adjacent pipe members can be effected by bridging members (25) spanning the end regions of the pipe members.
250	Assembly for directional drilling of boreholes	EP88200654.7	1988-04-06	EP0287155B1	1992-11-25	Steiginga, Abe; Worrall, Robert Nicholas

251	DRUCKROHRSTRANG ZUM KONTINUIERLICHEN SCHMELZBOHREN FÜR TIEFBOHRUNGEN SOWIE VERFAHREN UND VORRICHTUNG ZU DESSEN HERSTELLEN, VORTREIBEN UND ABBRECHEN	EP90906112.0	1990-05-03	EP0426788A1	1991-05-15	FOPPE, Werner
Les canalisations d'alimentation (10, 11, 16), les canalisations de mesure et les canalisations de commande des équipements de forage sont logées à l'intérieur de la colonne de tubes de pression (48) en vue du forage thermique en continu de puits profonds. La colonne de tubes renferme au moins deux composants (4) en forme de coquille dont chacun forme un segment longitudinal (4) d'un tube, ainsi que des moyens pour assembler un tube étanche extérieurement lisse qui résiste aux efforts de tension et de compression. Dans le procédé pour fabriquer, guider et ensuite démonter une colonne de tubes de pression en vue du forage thermique en continu de puits profonds, les canalisations d'alimentation (10, 11, 16), de mesure et de commande sont passées en continu le long de la profondeur à forer. A cet effet, pendant le guidage du forage, plusieurs composants (1, 4) sont assemblés en tronçons autour des canalisations d'alimentation (10, 11, 12), de mesure et de commande afin de former une colonne hermétique de tubes de pression (48), résistante aux efforts de tension et de compression et qui est ensuite guidée en continu. Le dispositif permettant la mise en oeuvre de ce procédé comprend un carrousel d'alimentation (60) pour chaque canalisation d'alimentation (10, 11, 16), sur lequel est enroulée cette dernière. Ledit carrousel (60) comporte une plateforme (62) circulaire montée rotative et motorisée pour maintenir les enroulements. En outre, le dispositif comprend une tour d'installation (40) à plusieurs étages (41 - 44) dans lesquels sont répartis des moyens (50, 51; 46, 47) permettant le montage par tronçons, le guidage en continu et le démontage ultérieur de la colonne de tubes de pression (48).
252	Apparatus for optional straight or directional drilling underground formations	EP85105353.8	1985-05-02	EP0163946B1	1989-04-05	Panzke, Rolf; Krüger, Volker, Dr.-Ing.

253	Apparatus for optional straight or directional drilling underground formations	EP85105353.8	1985-05-02	EP0163946A1	1985-12-11	Panzke, Rolf; Krüger, Volker, Dr.-Ing.
A device for selective straight or directional drilling in subterranean rock formations consists of a rotary drilling tool having a tool main axis (8) and comprising a housing (3) which comprises several sections and can be connected to a drill string (4), the housing (3) having a down-hole motor for driving a drill bit (13) by means of a driven shaft (12). For straight drilling, the housing (3) can be set in independent, slow rotation about the tool main axis (8) by being turned by the drill string (4), and for directional drilling can be aligned and fixed against turning. The lower section (10) of the housing adjacent to the drill bit and mounting the driven shaft is deflected relative to the tool main axis, and this section (10) is connected to an upper section (11) by an intermediate section which has an axis which intersects the axes of the upper and lower section. The device may include a plurality of interchangeable intermediate sections.
254	Method and means for controlling the course of a bore hole	EP83200027.7	1983-01-10	EP0085444B1	1985-10-02	Feenstra, Robijn; Kamp, Anthony Willem

255	Method and means for controlling the course of a bore hole	EP83200027.7	1983-01-10	EP0085444A2	1983-08-10	Feenstra, Robijn; Kamp, Anthony Willem
The invention relates to a method and means for controlling the course of a bore hole during drilling thereof. The means comprises a down-hole motor and at least two stabilizers mounted on the housing of the down-hole motor wherein at least one of said stabilizers is mounted eccentrically on the motor housing. Controlling the course of a bore hole that is being drilled with the down-hole motor driving the drill bit is done by successively not rotating the drill string and rotating the drill string.
256	METHOD OF CENTRALISING TUBING IN A WELLBORE	PCT/EP2014069874	2014-09-18	WO2015040103A2	2015-03-26	GRIMSBO GJERMUND; GODØY RUNE; HEMMINGSEN PÅL VIGGO
A method of centralising tubing in a wellbore comprises either providing one or more expandable elements between a tubing and a surrounding casing located in a wellbore and expanding the expandable elements against the casing so as to cause the tubing to centre within the casing; or expanding one or more portions of a tubing against a surrounding casing located in a wellbore so as to cause the tubing to centre within the casing.
257	ANCHOR RING ASSEMBLY	PCT/GB2014051210	2014-04-17	WO2014170685A2	2014-10-23	ALLEN MIKE; HARE DAVID MATTHEW; BARNES CHRISTOPHER GEORGE
An anchor ring assembly (10) for anchoring to a mandrel (12) comprises an annular housing (14) which defines a through bore (15) to permit mounting on a mandrel (12). A plurality of slips (16) are circumferentially arranged within the through bore (15) of the housing (14), and a plurality of activator members (28) extend from an external surface of the housing (14) to engage the slips (16), wherein the activator members (28) are adjustable relative to the housing to extend the slips (16) radially inwardly to engage and grip a mandrel (12).
258	FLOW THROUGH SUBASSEMBLY FOR A DOWNHOLE DRILL STRING AND METHOD FOR MAKING SAME	PCT/US2006016776	2006-05-04	WO2006121699A3	2009-04-16	BAIRD JEFFERY
A subassembly for a downhole drill string has a hollow outer body or barrel with a plurality of blade openings. A plurality of blade sets extends outwardly through the openings. Fluid flow inlets are provided in the lower section of the body below the blade openings and flow outlets are provided in an upper section above the blade openings. An annular spaced apart support mandrel extends through the hollow section of body and supports and retains the blades in the openings. An annular fluid flow passage is provided through the annular space. Drilling fluids outside of the subassembly may flow through the inlet, up the annular fluid flow passage, and out the outlet thereby bypassing any plug or pack-off formed between the subassembly and the well bore. An existing subassembly may be retrofitted to provide a fluid flow bypass channel around the blades. The existing subassembly is provided with inlets below and outlets above the blades. The bypass channel is then formed between the blades.
259	DRILLING STRING STABILISER TOOL AND STABILISER BLADE ASSEMBLY	PCT/EP2005055402	2005-10-20	WO2006045741A2	2006-05-04	NEWMAN MICHAEL THOMAS
A drilling string stabiliser tool comprising a cylindrical stabiliser body and a plurality of stabiliser blade assemblies mounted on the outer surface of said cylindrical body, wherein said stabiliser assembly comprises a stabiliser blade having an upper surface and side walls, wherein the stabiliser blade has an elongated shape with a front half having a front end and a back half having a back end, and wherein the average width of the back half of the stabiliser blade is substantially smaller than the average width of the front half.
260	WEAR RESISTANT TUBULAR CONNECTION	PCT/CA0201114	2002-07-18	WO03008755A8	2004-02-19	SLACK MAURICE WILLIAM; WARREN TOMMY M; ANGMAN PER G; TESSARI ROBERT M
Wear resistant connection (3) for joining lenghts of casing tubulars (2, 4) into assemblies referred to as strings. The wear resistant connection (3) provides a means to substantially prevent loss of material from the exterior surface of the tube wall, in the region of the connection, caused by rotating wear mechanisms present where such strings are placed in boreholes and rotated. In one embodiment, this wear resistant connection (3) provides resistance to eccentric rotating wear mechanisms arising from the bend angle either accidentally or deliberately present in casing connections.

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