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公开(公告)号：GB2332461B
公开(公告)日：2002-10-30
申请号：GB9827666
申请日：1998-12-17
Applicant: BAKER HUGHES INC
Inventor： ZAHRADNIK ANTON F , SULLIVAN ERIC CHARLES , LIN CHIH , KOLTERMANN TERRY , SCHMIDT SCOTT RAY
Abstract: An earth-boring bit has a bit body and at least one bearing shaft depending inwardly and downwardly from the bit body. The bearing shaft has a base where it joins the bit body. At least one cutter is mounted for rotation on the bearing shaft and has radial and axial surfaces that cooperate with the base of the bearing shaft to define a bearing seal gland. A bearing is defined between the cutter and bearing shaft. A seal element is disposed in the seal gland. A secondary seal is disposed in the seal gland opposite the cutter axial surface and cooperates with the seal element to at least partially seal the gland against entry of debris from the exterior of the bit.
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公开(公告)号：ITTO20011026A1
公开(公告)日：2003-04-28
申请号：ITTO20011026
申请日：2001-10-26
Applicant: BAKER HUGHES INC
Inventor： ZADRAPA GLENN R , SULLIVAN ERIC CHARLES , ZALESKI THEODORE EDWARD JR , SCHMIDT SCOTT RAY , NGUYEN DON QUY , MARVELL TIMOTHY K , RUFF DANIEL K
Abstract: An improved drill bit for use in drilling operations in a wellbore comprising a bit body including a plurality of bit legs, each supporting a rolling cone cutter, a lubrication system for a rolling cone cutter, at least one lubrication sensor for monitoring at least one condition of said lubricant during drilling operations, and an electronics member in the bit body for recording data obtained form said lubrication sensor.
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公开(公告)号：GB2377723B
公开(公告)日：2003-04-02
申请号：GB0225148
申请日：2001-10-26
Applicant: BAKER HUGHES INC
Inventor： SULLIVAN ERIC CHARLES , ZALESKI JR THEODORE EDWARD , SCHMIDT SCOTT RAY , RUFF DANIEL E , NGUYEN DON QUY , ZADRAPA GLENN R , MARVEL TIMOTHY K
Abstract: A roller cone drill bit 511 has at least one sensor 207 monitoring its behaviour during drilling. A monitoring circuit 529 housed in an electronics bay 530 in the shank 525 of the bit processes data from the sensor. Power may be supplied from a battery (4020, figure 38A) located within a cavity in the bit and connected to the electronics bay by a conduit. The electronics bay may be partially defined by, and protected by, a fluid tight sealing cap. The sensors may identify imminent seal failure by detecting changes in bit lubricant composition using an annular capacitor to measure the dielectric constant of the lubricant.
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公开(公告)号：GB2410277A
公开(公告)日：2005-07-27
申请号：GB0507277
申请日：2001-05-14
Applicant: BAKER HUGHES INC
Inventor： SULLIVAN ERIC CHARLES , ZALESKI JR THEODORE EDWARD , SCHMIDT SCOTT RAY , NGUYEN DON QUY , ZADRAPA GLENN R , LIN CHIH
Abstract: A drill bit (26, fig 1) having a bit condition sensor system to relay information on downhole conditions during drilling has an oscillator 901, capacitor 903 and resistor 905. The resistor 905 (which may be a thermocouple temperature sensor) changes with temperature which changes the oscillation frequency of oscillator 901. The output of oscillator 901 is fed to a sampling circuit 907 and recording circuit 909 which uses the information to determine and record information, eg, temperature in a drill bit leg (fig 3).
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公开(公告)号：GB2377724B
公开(公告)日：2003-04-02
申请号：GB0225149
申请日：2001-10-26
Applicant: BAKER HUGHES INC
Inventor： SULLIVAN ERIC CHARLES , ZALESKI JR THEODORE EDWARD , SCHMIDT SCOTT RAY , NGUYEN DON QUY , ZADRAPA GLENN R , MARVEL TIMOTHY K , RUFF DANIEL E
Abstract: A roller cone drill bit 511 has at least one sensor 207 monitoring its behaviour during drilling. A monitoring circuit 529 housed in an electronics bay 530 in the shank 525 of the bit processes data from the sensor. Power may be supplied from a battery (4020, figure 38A) located within a cavity in the bit and connected to the electronics bay by a conduit. The electronics bay may be partially defined by, and protected by, a fluid tight sealing cap. The sensors may identify imminent seal failure by detecting changes in bit lubricant composition using an annular capacitor to measure the dielectric constant of the lubricant.
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Patent Agency Ranking
公开(公告)号：GB2375554A
公开(公告)日：2002-11-20
申请号：GB0111708
申请日：2001-05-14
Applicant: BAKER HUGHES INC
Inventor： SULLIVAN ERIC CHARLES , ZALESKI THEODORE EDWARD , SCHMIDT SCOTT RAY , NGUYEN DON QUY , ZADRAPA GLENN R , LIN CHIH
Abstract: A roller cone drill bit(26 Fig2) has at least one sensor mounted inside each leg, more particularly, a temperature sensor or lubrication condition sensor which monitors one or more downhole conditions regarding the bit, drilling fluid etc. and has a series of tubes running through the legs for electrical conductors. Monitoring, sampling and memory devices(not shown) may also be fitted as well as a signalling system in the form of an erodible ball which is introduced into the fluid flow path to impart a pressure difference.
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公开(公告)号：ITTO20010452A1
公开(公告)日：2002-11-15
申请号：ITTO20010452
申请日：2001-05-15
Applicant: BAKER HUGHES INC
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公开(公告)号：GB2368360A
公开(公告)日：2002-05-01
申请号：GB0125802
申请日：2001-10-26
Applicant: BAKER HUGHES INC
Inventor： SULLIVAN ERIC CHARLES , ZALESKI JR THEODORE EDWARD , SCHMIDT SCOTT RAY , NGUYEN DON QUY , ZADRAPA GLENN R , MARVEL TIMOTHY K , RUFF DANIEL E
Abstract: A roller cone drill bit 511 has at least one sensor 207 monitoring its behaviour during drilling. A monitoring circuit 529 housed in an electronics bay 530 in the shank 525 of the bit processes data from the sensor. Power may be supplied from a battery also located within the bit (figure 38A) and protected by a sealing cap. The monitoring circuit communicates with the surface via a mud pulse actuation system (figure 39) located between two mud flow ports (4083, 4085) in the bit and comprising a piston (4092) and cylinder (4094) connected to a signal nozzle (4088). The sensors may identify imminent seal failure by detecting changes in bit lubricant composition using an annular capacitor to measure the dielectric constant of the lubricant. Also disclosed is an erodible or dissolvable ball (1003, figure 32) that is released by the monitoring system to temporarily block the mud flow, sending a mud pressure pulse signal to the surface.
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公开(公告)号：GB2398091B
公开(公告)日：2005-06-29
申请号：GB0408974
申请日：2001-05-14
Applicant: BAKER HUGHES INC
Inventor： SULLIVAN ERIC CHARLES , ZALESKI THEODORE EDWARD , SCHMIDT SCOTT RAY , NGUYEN DON QUY , ZADRAPA GLENN R , LIN CHIH
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公开(公告)号：GB2375554B
公开(公告)日：2005-06-15
申请号：GB0111708
申请日：2001-05-14
Applicant: BAKER HUGHES INC
Inventor： SULLIVAN ERIC CHARLES , ZALESKI THEODORE EDWARD , SCHMIDT SCOTT RAY , NGUYEN DON QUY , ZADRAPA GLENN R , LIN CHIH
Abstract: A drill bit for use in drilling operations in a wellbore, the drill bit having a bit body including a plurality of bit legs, each supporting a rolling cone cutter; a coupling member formed at an upper portion of said bit body; at least one temperature sensor for monitoring at least one temperature condition of said improved drill bit during drilling operations; and at least one temperature sensor cavity formed in said bit body and adapted for receiving, carrying, and locating said at least one temperature sensor in a particular position relative to said bit body which is empirically determined to optimize temperature sensor discrimination.
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