| 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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| 07/30/2002 | US6426917 Reservoir monitoring through modified casing joint |
| 07/25/2002 | WO2002057598A1 Retrieving a sample of formation fluid in a cased hole |
| 07/25/2002 | WO2002057597A1 Determining the viscosity of a hydrocarbon reservoir fluid |
| 07/25/2002 | WO2002057596A1 Determining the pvt properties of a hydrocarbon reservoir fluid |
| 07/25/2002 | WO2002057595A1 Measuring the in situ static formation temperature |
| 07/25/2002 | US20020096363 Method and apparatus for measuring mud and formation properties downhole |
| 07/25/2002 | US20020095984 Constant-head soil permeameter for determining the hydraulic conductivity of earthen materials |
| 07/10/2002 | CN1358289A Method of upscaling permeability for unstructured GRID |
| 07/09/2002 | US6415659 Method for analyzing purge water |
| 07/09/2002 | CA2031357C Method of analysing and controlling a fluid influx during the drilling of a borehole |
| 07/04/2002 | WO2001051768A3 Formation fluid side-wall sampler |
| 07/04/2002 | US20020084072 Reduced contamination sampling |
| 07/03/2002 | CN2498330Y Exploration sample fixer |
| 07/02/2002 | US6412575 Coring bit and method for obtaining a material core sample |
| 07/02/2002 | US6412558 Early formation evaluation tool |
| 06/25/2002 | US6408953 Method and system for predicting performance of a drilling system for a given formation |
| 06/25/2002 | US6408691 Well monitoring system |
| 06/20/2002 | WO2002048499A2 Method and apparatus for measuring mud and formation properties downhole |
| 06/18/2002 | US6408249 Method for determining a property of a hydrocarbon-bearing formation |
| 06/18/2002 | US6405588 Monitoring well |
| 06/13/2002 | WO2002046563A2 Method and device for determining the quality of an oil well reserve |
| 06/13/2002 | US20020070013 Method and apparatus for forcing an object through the sidewall of a borehole |
| 06/12/2002 | EP1212696A1 Method of upscaling permeability for unstructured grids |
| 06/12/2002 | EP1212514A2 System for enhancing fluid flow in a well |
| 06/11/2002 | US6401840 Method of extracting and testing a core from a subterranean formation |
| 06/06/2002 | US20020066563 Method and apparatus for continuously testing a well |
| 06/06/2002 | US20020066309 Monitoring of downhole parameters and tools utilizing fiber optics |
| 06/06/2002 | US20020066308 Borehole testing system |
| 06/04/2002 | US6400147 Downhole NMR tool having a programmable pulse sequencer |
| 05/30/2002 | WO2001062603A3 Integrated reservoir optimization |
| 05/29/2002 | CN2493747Y Blowout sampling device |
| 05/28/2002 | US6393906 Method to evaluate the hydrocarbon potential of sedimentary basins from fluid inclusions |
| 05/23/2002 | US20020060094 Method for fast and extensive formation evaluation using minimum system volume |
| 05/23/2002 | US20020060067 Formation fluid sampling apparatus and method |
| 05/21/2002 | US6389905 Method and apparatus for monitoring the compaction of a fill |
| 05/21/2002 | CA2236585C Sampling device |
| 05/16/2002 | US20020059048 Method of load and failure prediction of downhole liners and wellbores |
| 05/15/2002 | EP1205630A2 Sample chamber with dead volume flushing |
| 05/15/2002 | CN1349037A Apparatus and method for placing data testing device into under-ground rock stratum |
| 05/14/2002 | US6388251 Optical probe for analysis of formation fluids |
| 05/14/2002 | US6386297 Method and apparatus for determining potential abrasivity in a wellbore |
| 05/14/2002 | US6386044 Multi-depth deflectometer and method |
| 05/14/2002 | US6386026 Cuttings sample catcher and method of use |
| 05/14/2002 | CA2044330C Advanced method and device for enhancing production loggings of an activated noneruptive well |
| 05/08/2002 | EP1203140A1 Anti-wobbling bailer with high speed insertion |
| 05/08/2002 | DE10050431A1 Sealed drilling device has self-boring threaded pin with one end as drill bit and other end having recess for tool, and with sample taking device with bellows tightly fitted and sealed on drilling machine and positioned around tool |
| 05/07/2002 | US6382315 Method and apparatus for continuously testing a well |
| 05/02/2002 | WO2002035054A1 Method and apparatus for in-situ production well testing |
| 05/02/2002 | US20020050355 Method of early predicting paraffin deposition risks during production and transport |
| 05/02/2002 | EP1200709A1 Method for determining a fluid contact level in a formation |
| 05/01/2002 | CN1347186A Improved coring drill motor and method for obtaining core sample of matter |
| 04/30/2002 | US6378364 Downhole densitometer |
| 04/30/2002 | US6378363 Method for obtaining leak-off test and formation integrity test profiles from limited downhole pressure measurements |
| 04/30/2002 | US6378362 In-situ Vadose zone remote sensor |
| 04/25/2002 | WO2001094982A3 Determining stress parameters of formations from multi-mode velocity data |
| 04/25/2002 | US20020046835 Formation testing while drilling apparatus with axially and spirally mounted ports |
| 04/24/2002 | CN2487872Y Multifunctional core flow experiment device and its special extruding cylinder |
| 04/24/2002 | CN1346423A Actuation of downhole device |
| 04/23/2002 | US6374926 Method of assaying downhole occurrences and conditions |
| 04/18/2002 | WO2002031476A2 Methods and apparatus for downhole fluids analysis |
| 04/18/2002 | US20020043620 Down hole gas analyzer method and apparatus |
| 04/18/2002 | US20020043371 Downhole fluid sampler |
| 04/18/2002 | US20020043370 Evaluation of reservoir and hydraulic fracture properties in multilayer commingled reservoirs using commingled reservoir production data and production logging information |
| 04/18/2002 | CA2425423A1 Methods and apparatus for downhole fluids analysis |
| 04/17/2002 | EP1197633A1 Open-hole test method and apparatus for subterranean wells |
| 04/16/2002 | US6371221 Coring bit motor and method for obtaining a material core sample |
| 04/11/2002 | WO2002029196A2 Improved well testing system |
| 04/11/2002 | US20020041832 Method and device for taking a sample of an emulsion circulating in a line |
| 04/10/2002 | EP1194679A1 Method and system for testing a borehole by the use of a movable plug |
| 04/09/2002 | US6367565 Means for detecting subterranean formations and monitoring the operation of a down-hole fluid driven percussive piston |
| 04/04/2002 | WO2002027139A1 Method and system for wireless communications for downhole applications |
| 04/03/2002 | CN1082128C Method of assaying work of waderground bit |
| 04/02/2002 | US6364015 Method of determining fracture closure pressures in hydraulicfracturing of subterranean formations |
| 04/02/2002 | US6363803 Vehicle mounted soil sampler |
| 03/28/2002 | US20020036503 Method and apparatus for tuning an NMR coil |
| 03/27/2002 | CN1341803A Method for predicting drilling system performance for given formation and its system |
| 03/27/2002 | CN1081721C Method of assaying compressive strength of rock |
| 03/26/2002 | US6360829 Soil sampling device |
| 03/21/2002 | WO2002023011A1 Evaluation of multilayer reservoirs |
| 03/21/2002 | US20020033699 Downhole NMR tool |
| 03/20/2002 | EP1188265A1 Method and apparatus for determining position in a pipe |
| 03/20/2002 | CN2482584Y Support arm independent logging instrument |
| 03/19/2002 | US6357525 Method and apparatus for testing a well |
| 03/14/2002 | WO2002020944A1 Method and apparatus for well testing |
| 03/14/2002 | WO2000065199A9 Method and apparatus for continuously testing a well |
| 03/14/2002 | CA2447772A1 Method and apparatus for well testing |
| 03/12/2002 | US6355928 Fiber optic tomographic imaging of borehole fluids |
| 03/07/2002 | WO2002018747A1 Method of determining fluid flow |
| 03/07/2002 | US20020027006 Early formation evaluation tool |
| 03/07/2002 | US20020027004 Computer controlled injection wells |
| 03/06/2002 | CN1338561A Hydraulic spray pump with sampler |
| 03/05/2002 | US6353799 Method and apparatus for determining potential interfacial severity for a formation |
| 03/05/2002 | US6352110 Method and apparatus for continuously testing a well |
| 03/05/2002 | US6351991 Determining stress parameters of formations from multi-mode velocity data |
| 02/28/2002 | US20020023780 Early formation evaluation tool |
| 02/28/2002 | US20020023746 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 02/27/2002 | EP1182327A1 Apparatus and method for propelling a data sensing apparatus into a subsurface formation |
| 02/27/2002 | CN2479211Y Water finding pipe string |
| 02/27/2002 | CN1079888C Method and system for monitoring characteristic of earth formation in well |
| 02/26/2002 | US6350986 Analysis of downhole OBM-contaminated formation fluid |