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