| Patents for E21B 49 - Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells (11,875) |
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| 04/29/2003 | CA2409884A1 Single tube downhole densitometer |
| 04/29/2003 | CA2231613C Downhole system and method for determining formation properties |
| 04/24/2003 | WO2003034175A2 Methods and systems for offering and servicing financial instruments |
| 04/24/2003 | US20030075361 Well system |
| 04/23/2003 | CN1413285A Three dimensional steerable system |
| 04/22/2003 | CA2359522A1 Sample catcher for underbalanced drilling operations |
| 04/16/2003 | EP1301688A1 Method for fast and extensive formation evaluation |
| 04/16/2003 | EP0858550B1 Sampling device |
| 04/15/2003 | US6549879 Determining optimal well locations from a 3D reservoir model |
| 04/15/2003 | US6547004 Method and apparatus for sampling low-yield wells |
| 04/10/2003 | WO2003029602A2 Methods for determining characteristics of earth formations |
| 04/10/2003 | US20030066646 Dual piston, single phase sampling mechanism and procedure |
| 04/10/2003 | US20030066643 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 04/09/2003 | CN1408987A Sampling method capable of reducing pollution |
| 04/09/2003 | CN1408984A Method for determining stratum diameter of well hole of projection hole finished well |
| 04/08/2003 | US6543540 Method and apparatus for downhole production zone |
| 04/08/2003 | US6543281 Downhole densitometer |
| 04/03/2003 | US20030062472 Methods and apparatus for downhole fluids analysis |
| 04/03/2003 | US20030062158 Methods for determining characteristics of earth formations |
| 04/02/2003 | EP1242881A4 Method and system for simulating a hydrocarbon-bearing formation |
| 04/02/2003 | EP0960261B1 Tool and method for drilling a lateral well |
| 04/02/2003 | EP0960260B1 Tool for making an opening in a tubular in a wellbore |
| 04/01/2003 | US6539795 Method for determining a fluid contact level in a hydrocarbon fluid bearing formation |
| 03/27/2003 | WO2003025326A2 Dual piston single phase sampling mechanism and procedure |
| 03/27/2003 | WO2003012434A9 Variable depth automated dynamic water profiler |
| 03/27/2003 | WO2002014907A9 Apparatus and method for synchronized formation measurement |
| 03/27/2003 | US20030058125 Reservoir management system and method |
| 03/27/2003 | US20030057366 Method of kick detection and cuttings bed buildup detection using a drilling tool |
| 03/27/2003 | US20030056950 Method for determining formation characteristics in a perforated wellbore |
| 03/26/2003 | EP1296020A1 Apparatus for sampling with reduced contamination |
| 03/25/2003 | US6538958 Method and apparatus for acoustics logging of fluid density and wet cement plugs in boreholes |
| 03/25/2003 | CA2235196C Method for taking a soil sample from a horizontal borehole |
| 03/20/2003 | WO2003023188A1 Well completion method, including integrated approach for fracture optimization |
| 03/20/2003 | US20030051916 Method of drilling, analyzing and stabilizing a terrestrial or other planetary subsurface formation |
| 03/18/2003 | US6534980 Downhole NMR tool antenna design |
| 03/13/2003 | US20030050758 Well completion method, including integrated approach for fracture optimization |
| 03/12/2003 | EP0988520A4 Soil testing assemblies |
| 03/11/2003 | US6531694 Wellbores utilizing fiber optic-based sensors and operating devices |
| 03/11/2003 | US6530428 Method and apparatus for in-situ production well testing |
| 03/06/2003 | WO2002075114B1 Method and apparatus to provide miniature formation fluid sample |
| 03/06/2003 | US20030042021 Reduced contamination sampling |
| 03/05/2003 | EP1287229A1 Real-time method for maintaining formation stability |
| 03/05/2003 | CN1401046A Wellbore logging system |
| 03/05/2003 | CN1400377A Method for defining serious sand sedimentation section in drilling process and its equipment |
| 03/04/2003 | US6527052 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 03/04/2003 | US6526818 Seabed analysis |
| 02/27/2003 | WO2003016953A1 Downhole nmr processing |
| 02/27/2003 | US20030037602 Variable depth automated dynamic water profiler |
| 02/26/2003 | EP1285250A1 Device for taking samples from a material of granular or powdery composition |
| 02/26/2003 | CN2537815Y Small well bore measuring tool |
| 02/26/2003 | CN2537810Y Full path measurer |
| 02/26/2003 | CN1399127A Drilling fluid rationing fluorescent logging method |
| 02/20/2003 | WO2003014524A1 Fracture closure pressure determination |
| 02/20/2003 | WO2003013875A1 Contingent convertible financial instruments |
| 02/20/2003 | WO2002046563A3 Method and device for determining the quality of an oil well reserve |
| 02/20/2003 | US20030033866 Receptacle for sampling downhole |
| 02/13/2003 | WO2003012434A2 Variable depth automated dynamic water profiler |
| 02/13/2003 | WO2001073400A9 Method and apparatus for determining fluid viscosity |
| 02/13/2003 | US20030029640 Method for determining drilling fluid properties downhole during wellbore drilling |
| 02/13/2003 | US20030029241 Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties |
| 02/12/2003 | EP1282760A1 A method of conducting in situ measurements of properties of a reservoir fluid |
| 02/12/2003 | CN2535559Y Locking type shrink-fit pressure controlling tester |
| 02/07/2003 | CA2392969A1 Method for determining real-time downhole mud properties while drilling |
| 02/06/2003 | DE10164648C1 Computer-controlled melting probe for detecting different measurement parameters in an area of ice has a melting head, a vertical control tube and sensors with very small recording areas for obtaining good local definition |
| 02/05/2003 | EP1153320A4 Focused formation fluid sampling probe |
| 01/29/2003 | EP1082691A4 Improved process for predicting behavior of a subterranean formation |
| 01/23/2003 | US20030016020 Method and apparatus using antennas to measure electrical anisotropy |
| 01/23/2003 | US20030015351 Method and system for predicting performance of a drilling system of a given formation |
| 01/16/2003 | DE20213085U1 Apparatus for taking ground or earth samples by means of a probe inserted through a sample removal opening |
| 01/14/2003 | CA2073290C Fracturing method and apparatus |
| 01/09/2003 | WO2002093126A3 Method and apparatus for downhole fluid characterization using flxural mechanical resonators |
| 01/09/2003 | WO2002048499A3 Method and apparatus for measuring mud and formation properties downhole |
| 01/08/2003 | WO2002090716A1 Method for characterising parameters of wells, well bottom zone and formation, and device for carrying out said method |
| 01/08/2003 | CA2415500A1 Method for characterising parameters of wells, well bottom zone and formation, and device for carrying out said method |
| 01/02/2003 | EP1269149A1 Method and apparatus for determining fluid viscosity |
| 01/02/2003 | EP0858583B1 Strain-sensing device |
| 01/02/2003 | DE20213568U1 Device for removal of ground air comprises at least one packer unit inserted in ground hole where it seals bore hole inner wall |
| 12/31/2002 | US6499344 Apparatus and method to obtain representative samples of oil well production |
| 12/27/2002 | WO2002103159A1 An apparatus for sampling and logging on all producing zones of a well |
| 12/26/2002 | US20020195247 Well-bore sensor apparatus and method |
| 12/26/2002 | US20020194907 Method and apparatus for the detection of bubble point pressure |
| 12/26/2002 | US20020194906 Fluid property sensors |
| 12/25/2002 | CN2527700Y Variable multistage testing fluid gathering device |
| 12/25/2002 | CN1097138C Borehole tool and method for collecting undergound rock formation data |
| 12/24/2002 | US6497290 Method and apparatus using coiled-in-coiled tubing |
| 12/19/2002 | US20020189339 Apparatus and method for measuring formation pressure using a nozzle |
| 12/19/2002 | US20020189338 Apparatus and method for syncronized formation measurement |
| 12/18/2002 | EP1266121A1 Methods for improving oil production |
| 12/18/2002 | EP0877912B1 Strain monitoring system |
| 12/12/2002 | US20020188431 Method of determining by numerical simulation the restoration conditions, by the fluids of a reservoir, of a complex well damaged by drilling operations |
| 12/12/2002 | US20020185313 Apparatus and method for formation testing while drilling with minimum system volume |
| 12/12/2002 | US20020184940 Single tube downhole densitometer |
| 12/11/2002 | EP1264962A1 Open hole formation testing |
| 12/10/2002 | US6491104 Open-hole test method and apparatus for subterranean wells |
| 12/10/2002 | US6490916 Method and system of fluid analysis and control in a hydrocarbon well |
| 12/10/2002 | CA2165113C Portable well testing apparatus |
| 12/05/2002 | US20020183939 Measuring device for determining physical and chemical properties of gases , liquids and solids |
| 12/05/2002 | US20020178805 Method and apparatus for downhole fluid characterization using flexural mechanical resonators |
| 12/05/2002 | US20020178804 Open hole formation testing |
| 12/05/2002 | US20020178803 Downhole densitometer |