Patents for E21B 45 - Measuring the drilling time or rate of penetration (257)
04/2009
04/16/2009WO2005050257A3 High temperature imaging device
04/02/2009WO2009043055A2 System and method for extraction of hydrocarbons by in-situ radio frequency heating of carbon bearing geological formations
04/02/2009WO2009042494A2 Modular power source for subsurface systems
04/02/2009WO2005062830A3 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
01/2009
01/27/2009CA2494144C Measurement-while-drilling assembly using real-time toolface oriented measurements
12/2008
12/16/2008CA2500382C Measurement-while-drilling assembly using real-time toolface oriented measurements
10/2008
10/02/2008WO2008118953A1 High pressure fracture tester
08/2008
08/26/2008CA2270637C A method for determining drill collar whirl in a bottom hole assembly and method for determining borehole size
08/12/2008US7412331 Method for predicting rate of penetration using bit-specific coefficient of sliding friction and mechanical efficiency as a function of confined compressive strength
08/07/2008WO2008094070A1 Bottom-hole condition recorder
07/2008
07/29/2008CA2324233C Method and system for optimizing penetration rate
06/2008
06/17/2008CA2482931C Method for improving drilling depth measurements
06/12/2008US20080137474 Apparatus and Method for Clock Shift Correction for Measurement-While-Drilling Measurements
05/2008
05/22/2008WO2008061033A2 Rotating fluid measurement device and method
04/2008
04/01/2008US7350410 System and method for measurements of depth and velocity of instrumentation within a wellbore
01/2008
01/09/2008CN100360763C Telescopic feed beam for rock drill and method of measuring rock drill travel
12/2007
12/26/2007CN101095239A High temperature memory device
12/19/2007EP1867829A1 Apparatus and method for downhole dynamics measurements
12/11/2007US7307425 Receiver electronics proximate antenna
12/04/2007CA2450653C Use of axial accelerometer for estimation of instantaneous rop downhole for lwd and wireline applications
11/2007
11/27/2007US7301223 High temperature electronic devices
09/2007
09/06/2007US20070204686 Well depth measurement using time domain reflectometry
08/2007
08/16/2007US20070186639 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
08/07/2007US7252144 Magnetometers for measurement-while-drilling applications
07/2007
07/31/2007CA2130460C Determination of drill bit rate of penetration from surface measurements
06/2007
06/14/2007DE4291022B4 Kurzstreckenübertragungsverbindung für ein Tiefen-MWD-System Short-range communication link for a depth-MWD system
04/2007
04/24/2007US7207215 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
04/24/2007CA2246315C An apparatus and system for making at-bit measurements while drilling
03/2007
03/27/2007US7195062 Measurement-while-drilling assembly using real-time toolface oriented measurements
03/08/2007WO2007026111A1 Method and apparatus for measuring velocity of tubulars
01/2007
01/23/2007CA2395771C Method of and system for optimizing rate of penetration based upon control variable correlation
12/2006
12/07/2006WO2005050714A3 High temperature electronic devices
11/2006
11/21/2006CA2209059C Method and system for real-time estimation of at least one parameter related to the performance of a drill bit
11/14/2006CA2209056C Method and system for real-time estimation of at least one parameter related to the displacement of a drill bit
11/01/2006CN1854460A Oil-well realtime monitoring system and its controlling method
10/2006
10/11/2006EP1709280A2 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
10/03/2006US7114565 Measurement-while-drilling assembly using real-time toolface oriented measurements
09/2006
09/13/2006EP1700002A2 High temperature environment tool system and method
08/2006
08/10/2006WO2005050777A3 Receiver electronics proximate antenna
08/09/2006EP1687837A2 High temperature electronic devices
08/02/2006EP1601854B1 Telescopic feed beam for rock drill and method of measuring rock drill travel
06/2006
06/28/2006EP1274922B1 Method of and system for optimizing rate of penetration based upon control variable correlation
06/06/2006US7058512 Downhole rate of penetration sensor assembly and method
05/2006
05/24/2006CN1777733A Telescopic feed beam for rock drill and method of measuring rock drill travel
05/02/2006CA2296003C Device and method for measuring the flow rate of drill cuttings
03/2006
03/28/2006US7017662 High temperature environment tool system and method
02/2006
02/21/2006US7000700 Measurement-while-drilling assembly using real-time toolface oriented measurements
12/2005
12/07/2005EP1601854A1 Telescopic feed beam for rock drill and method of measuring rock drill travel
11/2005
11/17/2005WO2005049957A3 High temperature environment tool system and method
09/2005
09/08/2005US20050197778 Downhole rate of penetration sensor assembly and method
09/07/2005CN1218114C Monitor system for drilling procedure
08/2005
08/11/2005WO2005050257A8 High temperature imaging device
08/04/2005US20050168224 Receiver electronics proximate antenna
07/2005
07/14/2005WO2005062830A2 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
07/14/2005US20050150691 High temperature environment tool system and method
06/2005
06/23/2005US20050132794 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit
06/02/2005WO2005050777A2 Receiver electronics proximate antenna
06/02/2005WO2005050714A2 High temperature electronic devices
06/02/2005WO2005050257A2 High temperature imaging device
06/02/2005WO2005049957A2 High temperature environment tool system and method
05/2005
05/24/2005CA2167676C Method for controlling the head of a drilling or core-drilling device and apparatus for carrying out this method
05/19/2005US20050104176 High temperature electronic devices
09/2004
09/02/2004WO2004074626A1 Telescopic feed beam for rock drill and method of measuring rock drill travel
08/2004
08/03/2004US6769497 Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications
03/2004
03/18/2004DE10241561A1 Method for remote control boring has the displacement of a pneumatically propelled boring head determined by monitoring the movement of the pneumatic supply hose
10/2003
10/28/2003US6637523 Drilling process monitor
12/2002
12/27/2002WO2002103158A1 Use of axial accelerometer for estimation of instantaneous rop downhole for lwd and wireline applications
12/26/2002US20020195276 Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications
09/2002
09/11/2002EP0708872B1 Method and apparatus for controlling the head of a drilling or core-drilling device
08/2002
08/07/2002EP1229172A1 Method and apparatus for making drilled piles in hard ground
07/2002
07/17/2002CN2500804Y Downhole sensor unit
06/2002
06/20/2002US20020074165 Drilling process monitor
05/2002
05/01/2002CN1346929A Monitor system for drilling procedure
10/2001
10/02/2001CA2081012C Device for measuring drilling mast swivel movement
12/1998
12/22/1998US5852235 Method and system for real-time estimation of at least one parameter linked with the displacement of a drill bit
12/01/1998US5844132 Method and system for real-time estimation of at least one parameter linked with the behavior of a downhole tool
01/1998
01/07/1998EP0816630A1 Method and system for real time estimation of at least one parameter connected to the performance of a downhole tool
01/07/1998EP0816629A1 Method and system for real time estimation of at least one parameter connected to the rate of penetration of a drilling tool
11/1997
11/26/1997EP0708872A4 Method and apparatus for controlling the head of a drilling or core-drilling device
02/1997
02/11/1997US5601148 Arrangement for measuring the position of a feed beam in a rock drilling apparatus and/or measuring the position of a rock drill
09/1996
09/03/1996US5551286 Determination of drill bit rate of penetration from surface measurements
05/1996
05/01/1996EP0708872A1 Method and apparatus for controlling the head of a drilling or core-drilling device
04/1996
04/17/1996EP0515652B1 Method and device for measuring the rate of penetration of equipment in a well
03/1996
03/26/1996US5501285 Method for controlling the head of a drilling or core-drilling device and apparatus for carrying out this method
12/1995
12/13/1995EP0626032B1 Determination of drill bit rate of penetration from surface measurements
04/1995
04/26/1995EP0528010B1 Device for measuring drilling mast swivel movement
03/1995
03/21/1995US5398546 Determination of drill bit rate of penetration from surface measurements
02/1995
02/02/1995WO1995003472A1 Method and apparatus for controlling the head of a drilling or core-drilling device
11/1994
11/22/1994US5365674 Device for measuring the displacement of a swivel of a drilling mast
07/1994
07/05/1994CA1330594C Procedure for measuring the rate of penetration of a drill bit
06/1994
06/22/1994CN2169687Y High precision parameter measurer for well depth, drilling time and suspension weight
06/21/1994US5321982 Method for measuring the rate of penetration of an equipment progressing in a well
05/1994
05/24/1994CA2026869C System and method for monitoring drill bit depth
03/1994
03/31/1994WO1994006999A1 Arrangement for measuring the position of a feed beam in a rock drilling apparatus and/or measuring the position of a rock drill
02/1994
02/16/1994CN2156473Y Displacement sensor with gearing spiral power spring
12/1993
12/28/1993US5274552 Drill string motion detection for bit depth calculation
10/1993
10/28/1993WO1993021545A1 Drill string motion detection for bit depth calculation
09/1993
09/02/1993WO1993017219A1 Determination of drill bit rate of penetration from surface measurements
08/1993
08/10/1993US5234053 Reeled tubing counter assembly and measuring method
12/1992
12/23/1992CN2125698U Automatic recorder for drilling time
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