专利检索_ 钻头专利检索_ 钻头专利检索查询

子分类：

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	METHODS OF ATTACHING A SHANK TO A BODY OF AN EARTH BORING DRILLING TOOL, AND TOOLS FORMED BY SUCH METHODS	EP07862650.4	2007-12-07	EP2102445A1	2009-09-23	SMITH, Redd H.; STEVENS, John H.
Earth-boring rotary drill bits including a bit body (44) attached to a shank (48). In some embodiments, the bit body and the shank may have abutting surfaces (54, 56) concentric to an interface axis (A1) offset relative to a longitudinal axis (L42) of the drill bit. In additional embodiments, the bit body and the shank may have generally frustoconical abutting surfaces (98, 100). Methods for attaching a shank and a bit body of an earth-boring rotary drill bit include abutting a surface of a shank against a surface of a bit body, and causing the abutting surfaces to be concentric to an axis that is offset or shifted relative to a longitudinal axis of the drill bit.
242	MODULAR FIXED CUTTER EARTH-BORING BITS, MODULAR FIXED CUTTER EARTH-BORING BIT BODIES, AND RELATED METHODS	EP07761022.8	2007-04-20	EP2024599A1	2009-02-18	MIRCHANDANI, Prakash, K.; WALLER, Michale, E.; WEIGOLD, Jeffrey, L.; MOSCO, Alfred, J.
A modular fixed cutter earth-boring bit body includes a blade support piece and at least one blade piece fastened to the blade support piece. A modular fixed cutter earth-boring bit and methods of making modular fixed cutter earth-boring bit bodies and bits also are disclosed.
243	MOLDS AND METHODS OF FORMING MOLDS ASSOCIATED WITH MANUFACTURE OF ROTARY DRILL BITS AND OTHER DOWNHOLE TOOLS	EP07761422.0	2007-04-27	EP2019905A2	2009-02-04	CALNAN, Barry D.; SILLEN, Valerie R.c.m.j.
Three dimensional printing equipment and techniques may be used in combination with three dimensional design data associated with, well drilling equipment and well completion equipment to form molds (200) associated with manufacture of such equipment. For example, such molds may be used to form a bit body or other components associated with a rotary drill bit. For some applications composite or matrix materials may be placed in the mold to form a matrix bit body. Heat transfer characteristics of the mold may be optimized for heating and/or cooling of the matrix materials to provide optimum fracture resistant (toughness) and optimum erosion, abrasion and/or wear resistance for portions of the bit body. Such molds may also be used to form steel bit bodies associated with fixed cutter rotary drill bits and other components associated with a wide variety of well drilling equipment and well completion equipment.
244	METHODS FOR DESIGNING AND FABRICATING EARTH-BORING ROTARY DRILL BITS HAVING PREDICTABLE WALK CHARACTERISTICS AND DRILL BITS CONFIGURED TO EXHIBIT PREDICTED WALK CHARACTERISTICS	EP07755361.8	2007-04-13	EP2007969A1	2008-12-31	STAUFFER, Bruce; HEUSER, William; JACOBSEN, Jim, L.
Walk characteristics of an earth-boring rotary drill bit may be predicted by measuring locations and orientations of cutting elements thereof and calculating the magnitude and direction of an imbalance force of the drill bit using the measurements obtained. The calculated imbalance force may be compared to the imbalance force of at least one other drill bit having a calculated imbalance force and observed walk characteristics. An earth-boring rotary drill bit may be designed by constructing a database including the magnitude and direction of a calculated imbalance force and observed walk characteristics for a number of drill bits. Desired walk characteristics are selected, the database is referenced, and the bit may be configured to exhibit an imbalance force selected to impart desired walk characteristics to the drill bit. Drill bits are configured to exhibit an imbalance force oriented in a predetermined direction relative to a blade of the drill bit. A system may be employed to monitor the imbalance force of an operating drill bit and to provide or implement desirable operational parameters to compensate for same.
245	SONDE ATTACHMENT MEANS	EP05814861.0	2005-11-28	EP1819900A1	2007-08-22	JAQUES, Paul Steven; JONES, Robert Hughes
A sonde for installation in a well including a clamp (2) for engaging with the inner wall of a well casing (3) and securing device for securing the clamp to inner tubing of the well, whereby the securing device includes an attachment device (5, 6) for connection to the inner tubing and a rod (4) connected between the clamp and the attachment device.
246	Entscheidungshilfe für die Auswahl von Bohr- und/oder Schneidelementen	EP03405382.7	2003-05-27	EP1369550B1	2006-03-29	Goedickemeier, Martin; Schindler, Reinhard

247	Method and apparatus for drilling and completing a well	EP01130066.2	2001-12-18	EP1217166B1	2005-08-24	Chavez, Juan Carlos; Douglas, ALexander Espin; Genolet, Luis Charlos; Jimenez, Maria Alejandra; Ranson, Aaron

248	ROTARY-TYPE EARTH DRILLING BIT, MODULAR GAUGE PADS THEREFOR AND METHODS OF TESTING OR ALTERING SUCH DRILL BITS	EP00904323.3	2000-01-13	EP1163420B1	2004-09-22	MILLER, Brian, E.; SCOTT, Danny, E.; BEEMAN, Daniel; COOLEY, Craig, H.; HANSEN, Wayne, R.
An earth boring drill bit (10) including replaceable gage pads (28). The gage pads and the corresponding surface of the earth boring drill bit may include complementary securing elements (40,46) which mutually engage one another. The gage pad may be removably affixed to the earth boring drill bit an affixation elements, such as a bolt, a mechanical locking element, brazing, welding, mechanical affixation, or another known technique. The invention also includes a method of testing differently configured gage pads employing a single earth boring drill bit, a method of replacing the gage pads of an earth boring drill bit at the drilling site, a method of customizing an earth boring drill bit to include one or more gage pads of desired configuration, and a method of altering the balance or net imbalance of an earth boring drill bit by replacing at least one gage pad thereof.
249	Rotary drill bit with rotatably mounted gauge section for bit stabilisation	EP95306939.0	1995-09-29	EP0707131B1	2002-12-11	Newton, Alex; Fuller, John M.; Murdock, Andrew; Sarik, Daniel J.

250	ROTARY-TYPE EARTH DRILLING BIT, MODULAR GAUGE PADS THEREFOR AND METHODS OF TESTING OR ALTERING SUCH DRILL BITS	EP00904323.3	2000-01-13	EP1163420A2	2001-12-19	MILLER, Brian, E.; SCOTT, Danny, E.; BEEMAN, Daniel; COOLEY, Craig, H.; HANSEN, Wayne, R.
An earth boring drill bit (10) including replaceable gage pads (28). The gage pads and the corresponding surface of the earth boring drill bit may include complementary securing elements (40,46) which mutually engage one another. The gage pad may be removably affixed to the earth boring drill bit an affixation elements, such as a bolt, a mechanical locking element, brazing, welding, mechanical affixation, or another known technique. The invention also includes a method of testing differently configured gage pads employing a single earth boring drill bit, a method of replacing the gage pads of an earth boring drill bit at the drilling site, a method of customizing an earth boring drill bit to include one or more gage pads of desired configuration, and a method of altering the balance or net imbalance of an earth boring drill bit by replacing at least one gage pad thereof.
251	DRILL BIT AND OTHER DOWNHOLE TOOLS	EP94914856.3	1994-04-21	EP0697057B1	2001-09-26	PASKE, William, C.; RODNEY, Paul, F.; ORMSBY, Ronald, D.
Various steel, downhole tools and components of drill string, including as examples, a PDC drill bit (10), a rotary rock bit (100), a cross-over sub (40), a stabilizer (51), a reamer or hole enlarger (70), and coring bit (120), are selectively treated to cause certain of their parts to be electro-negative with respect to steel, and certain other parts to either have the same electro-negativity as steel, or to be treated electro-positive with respect to steel.
252	Outil de forage avec amortisseurs de chocs	EP97403045.4	1997-12-15	EP0851092B1	2000-02-02	Besson, Alain; Delwiche, Robert; Lecour, Pierre

253	DRILLING BIT ASSEMBLY AND APPARATUS	EP95907065.7	1995-01-30	EP0742867B1	1999-06-02	DEFOURNY, Paul M.J.L.V.G.; ABBASSIAN, Fereidoun
A drill bit comprises a shank member (31), a bit body (32) provided with cutters (33) and flexible material (35) between the shank (31) and the bit body (32) allowing relative tilting movement therebetween to reduce adverse effects caused by vibration of the bit. In other embodiments, flexible material is provided between the bit body and the cutters. In further embodiments, the flexible material may be provided in a tiltable sub-assembly for incorporation in a drill-string above the drill bit. An apparatus for simulating drilling conditions is also provided.
254	DRILL BIT AND OTHER DOWNHOLE TOOLS	EP94914856	1994-04-21	EP0697057A4	1998-09-09	PASKE WILLIAM C; RODNEY PAUL F; ORMSBY RONALD D
Various steel, downhole tools and components of drill string, including as examples, a PDC drill bit (10), a rotary rock bit (100), a cross-over sub (40), a stabilizer (51), a reamer or hole enlarger (70), and coring bit (120), are selectively treated to cause certain of their parts to be electro-negative with respect to steel, and certain other parts to either have the same electro-negativity as steel, or to be treated electro-positive with respect to steel.
255	Rotary drill bit with rotatably mounted gauge section for bit stabilisation	EP95306939.0	1995-09-29	EP0707131A2	1996-04-17	Newton, Alex; Fuller, John M.; Murdock, Andrew; Sarik, Daniel J.
A rotary drill bit comprises a bit body (10), a shank (11) for connection to a drill string, a plurality of cutters (14) mounted on the bit body, and a gauge structure (20) which extends around the bit body and, in use, engages the surrounding formation forming the sides of the borehole being drilled. At least a section of the gauge structure (20) is rotatably mounted on the bit body so that, in use, the gauge section may remain substantially non-rotating in engagement with the formation while the bit body rotates relative to it. The external surface of the non-rotating gauge section (20) may be formed with longitudinal grooves (25) to permit the flow of drilling fluid past the gauge section to the annulus. Alternatively the outer surface of the gauge section may be generally cylindrical, in which case internal passages (9) are provided through the gauge section, and/or the bit body, for the flow of drilling fluid past the gauge section to the annulus.
256	DRILL BIT AND OTHER DOWNHOLE TOOLS	EP94914856.0	1994-04-21	EP0697057A1	1996-02-21	PASKE, William, C.; RODNEY, Paul, F.; ORMSBY, Ronald, D.
Various steel, downhole tools and components of drill string, including as examples, a PDC drill bit (10), a rotary rock bit (100), a cross-over sub (40), a stabilizer (51), a reamer or hole enlarger (70), and coring bit (120), are selectively treated to cause certain of their parts to be electro-negative with respect to steel, and certain other parts to either have the same electro-negativity as steel, or to be treated electro-positive with respect to steel.
257	Method and apparatus for directional drilling using sonic energy	EP89306916.1	1989-07-07	EP0406492A1	1991-01-09	Bodine, Albert G.
A sonic boring tool which employs sonic energy in implementing it its boring action is lowered down a well to a region thereof where the flow of effluent is restricted by clogging and contamination. A curved bend (20A) is provided in the string (20) above the tool (10) such that the tool is oriented for drilling into the formation laterally from the well. The drill string employed is flexible so that it can follow the curved path of the tool. The tool may comprise a drill bit, sonically driven by means of an oribiting mass oscillator (25) coupled to the drill string or may comprise a hydraulic drilling tool in which hydraulic pulsating jets are generated in response to sonic energy developed in an orbiting mass oscillator and coupled to the tool through a resonantly driven drill string. In one embodiment a rotary table (13) is provided to enable the rotation of the tool in one direction or the other or alternatively in opposite directions to obtain a variety of drilling patterns.
258	Nach dem Bodenentnahmeprinzip arbeitende Einrichtung zum unterirdischen Vorpressen von Rohren	EP85102008.1	1985-02-23	EP0155540B1	1987-05-06	Bosse, Carl B.; Wehling, Fritz

259	Nach dem Bodenentnahmeprinzip arbeitende Einrichtung zum unterirdischen Vorpressen von Rohren	EP85102008.1	1985-02-23	EP0155540A1	1985-09-25	Bosse, Carl B.; Wehling, Fritz
Bei dieser Einrichtung zum unterirdischen Vorpressen von Rohren ist im Kopfende des zusammen mit der Rohrtour von der Startgrube aus mit einem Preßgestänge vorgetriebenen Abstützrohres (1) ein mit einem eigenen Antrieb (12) versehener Schneidkranz (5, 6) drehbar gelagert. In der Rohrtour und dem Abstützrohr (1) befindet sich die Förderschnecke (2), die kopfendig ein Bohrwerkzeug (4) trägt. Der Schneidkranz (5, 6) umgibt das Bohrwerkzeug (4) abständig. Ein wesentlicher Teil des manchmal erforderlichen hohen Drehmomentes kann nun über den Schneidkranz und seinen Antrieb aufgebracht werden und belastet nicht mehr den langen Förderschneckenstrang.
260	METHOD FOR REVEALING ANOMALOUS DISCONTINUITY INTERFACES IN PORE PRESSURES IN NON-DRILLED GEOLOGICAL FORMATIONS AND A SYSTEM IMPLEMENTING IT	EP14704661.9	2014-01-14	EP2946071B1	2018-11-28	FERRARA, Paolo; TUROLLA, Axel; ZAMPATO, Massimo
A method for revealing anomalous discontinuity interfaces in pore pressures in non-drilled geological formations and an implementing system. The method includes generating, by an electroacoustic transducer, first pressure sound waves and receiving a reflected signal of such first pressure sound waves generated by at least one discontinuity interface due to passage from first to second different geological formations situated successively along an emission direction of the electroacoustic transducer; calculating speed of the first pressure sound waves generated and distance between the electroacoustic transducer and the at least one discontinuity interface; generating, by the electroacoustic transducer, second pressure sound waves and revealing the electrical impedance induced at terminals of the electroacoustic transducer; estimating, based on the electrical impedance revealed, plural parameters characteristic of the first and second geological formation; estimating pressure of the second geological formation based on the sound speed and distance calculated and the plural characteristic parameters estimated.

8 9 10 11 12 13 14 15 16 17

该功能需要专业版企业版VIP权限，您可以：