| 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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| 01/03/2001 | EP1064452A1 Formation testing apparatus and method |
| 01/02/2001 | US6167964 Method of determining in-situ stresses |
| 01/02/2001 | US6167962 Anti-wobbling bailer with high speed insertion |
| 12/28/2000 | WO2000079423A1 Method of upscaling permeability for unstructured grids |
| 12/27/2000 | EP0620893B1 Formation testing and sampling method and apparatus |
| 12/26/2000 | US6166546 Method for determining the relative clay content of well core |
| 12/26/2000 | US6164127 Well flowmeter and down-hole sampler |
| 12/26/2000 | US6164126 Earth formation pressure measurement with penetrating probe |
| 12/20/2000 | EP0777813A4 Formation isolation and testing apparatus and method |
| 12/12/2000 | US6158509 Method and apparatus for gathering liquid sample using a submersible pump |
| 12/06/2000 | EP0883729B1 Moling apparatus and a ground sensing system therefor |
| 12/05/2000 | US6157893 Modified formation testing apparatus and method |
| 12/05/2000 | US6155608 Self-locking connector |
| 11/28/2000 | US6154705 System for attenuating high order free surface multiples from a seismic shot record using a genetic procedure |
| 11/21/2000 | US6150822 Sensor in bit for measuring formation properties while drilling |
| 11/21/2000 | US6148933 Steering device for bottomhole drilling assemblies |
| 11/21/2000 | US6148914 Sampling hydrocarbons in a well using a flexible bag |
| 11/21/2000 | US6148912 Subsurface measurement apparatus, system, and process for improved well drilling control and production |
| 11/21/2000 | US6148664 Method and apparatus for shutting in a well while leaving drill stem in the borehole |
| 11/20/2000 | CA2272476A1 A method of taking soil samples and a soil sampling apparatus |
| 11/14/2000 | US6147437 Pressure and temperature transducer |
| 11/08/2000 | CN2405011Y Device for sampling fluid from well |
| 11/07/2000 | US6142229 Method and system for producing fluids from low permeability formations |
| 11/07/2000 | CA2018493C Apparatus for extracting a liquid from a long tube |
| 11/02/2000 | WO2000065200A1 Method and apparatus for testing a well |
| 11/02/2000 | WO2000065199A1 Method and apparatus for continuously testing a well |
| 10/31/2000 | US6138752 Method and apparatus to determine subterrranean formation stress |
| 10/31/2000 | US6138522 Sample collecting apparatus of space machine |
| 10/25/2000 | CN1271056A Expandable sensor device and method |
| 10/18/2000 | EP1045113A1 Deployable sensor apparatus and method |
| 10/17/2000 | US6133204 Selectively inhibiting gelation of polymer solutions in hydrocarbon-bearing zones of formation and/or selectively removing polymer gels from said zones |
| 10/17/2000 | US6131673 Method of assaying downhole occurrences and conditions |
| 10/17/2000 | US6131451 Well flowmeter and down-hole sampler |
| 10/11/2000 | CN1269455A Stratum-fluid sampling apparatus and method thereof |
| 10/10/2000 | US6128949 Phase change analysis in logging method |
| 10/05/2000 | WO2000058604A1 Method and system for testing a borehole by the use of a movable plug |
| 10/04/2000 | EP1041244A2 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 10/04/2000 | CN2399510Y One-hole multi-mark layering mark |
| 10/04/2000 | CN2399509Y Large pass multi-flow analyzer |
| 10/03/2000 | US6128579 Automated material balance system for hydrocarbon reservoirs using a genetic procedure |
| 10/03/2000 | US6125948 Soil sampling device with frangible section |
| 09/27/2000 | CN2398423Y Double-deck water distribution core for water injection well |
| 09/27/2000 | CN1267781A Plate for high-temperature, high-pressure and micro-resistivity scanning and imaging logging instrument |
| 09/20/2000 | CN2397257Y Drill for taking sample of sandy soil |
| 09/20/2000 | CN1267366A Soil testing assemblies |
| 09/19/2000 | US6119782 Method and apparatus for anchoring a tool within a cased borehole |
| 09/14/2000 | WO2000053887A2 Wellbore primary barrier and related systems |
| 09/13/2000 | CN1266142A Method for obtaining survey of leakage and structum integrity by finite downhole pressure test |
| 09/12/2000 | US6116353 Method and apparatus for installing a micro-well with a penetrometer |
| 09/12/2000 | US6116340 Downhole build-up pressure test using coiled tubing |
| 09/08/2000 | WO2000032905A3 Improved methods for performing reservoir simulation |
| 09/06/2000 | CN1265471A Evaluation of stratigraphic structure for well-logging using mangetic resonance |
| 09/05/2000 | US6112812 Wellbore milling method |
| 09/05/2000 | CA2235970C Method of efficient drawdown and buildup testing of a completed producing well |
| 08/31/2000 | WO2000050876A1 Analysis of downhole formation fluid contaminated by oil-based mud |
| 08/31/2000 | WO2000050737A1 Method and apparatus for determining potential interfacial severity for a formation |
| 08/31/2000 | WO2000050736A1 Apparatus and method for controlling well fluid sample pressure |
| 08/31/2000 | WO2000050735A1 Method and apparatus for determining potential abrasivity in a wellbore |
| 08/31/2000 | WO2000050728A1 Method and apparatus for determining potential for drill bit performance |
| 08/31/2000 | WO2000036438A3 Hydrocarbon reservoir testing |
| 08/30/2000 | EP0736131A4 A method for real time process control of well stimulation |
| 08/29/2000 | US6109368 Method and system for predicting performance of a drilling system for a given formation |
| 08/24/2000 | WO2000049274A1 Actuation of downhole devices |
| 08/22/2000 | US6108608 Method of estimating properties of a multi-component fluid using pseudocomponents |
| 08/17/2000 | WO2000047870A1 A method for use in sampling and/or measuring in reservoir fluid |
| 08/17/2000 | WO2000034624A3 Apparatus and method for well fluid sampling |
| 08/15/2000 | US6102122 Control of heat injection based on temperature and in-situ stress measurement |
| 08/15/2000 | US6101871 In-ground vapor monitoring device and method |
| 08/08/2000 | US6101447 Oil and gas reservoir production analysis apparatus and method |
| 08/08/2000 | US6098725 Soil sampling device with frangible section and method of sampling |
| 07/27/2000 | WO2000043812A1 Focused formation fluid sampling probe |
| 07/26/2000 | EP0858583A4 Strain-sensing device |
| 07/25/2000 | US6092416 Downholed system and method for determining formation properties |
| 07/20/2000 | WO2000042416A1 Optical tool and method for analysis of formation fluids |
| 07/20/2000 | WO2000042288A1 Method and apparatus for forcing an object through the sidewall of a borehole |
| 07/19/2000 | EP1019459A1 Oil based drilling fluids suitable for drilling in the presence of acidic gases |
| 07/19/2000 | CN1260857A Earth formation surveying device |
| 07/19/2000 | CN1260497A Underground nulcear magnetic resonance logger with programmable pulse serial generators |
| 07/11/2000 | CA2093041C System and method for controlling drill bit usage and well plan |
| 07/05/2000 | EP1012443A4 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 06/29/2000 | WO2000037898A1 A method of estimating properties of a multi-component fluid using pseudocomponents |
| 06/28/2000 | EP1012443A1 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 06/22/2000 | WO2000036438A2 Hydrocarbon reservoir testing |
| 06/21/2000 | EP1010974A1 Sampling probe for the in-situ extraction of organic micropollutants |
| 06/21/2000 | EP0815344B1 Whipstock |
| 06/21/2000 | CN2383977Y Layer testing working drum for water injection well |
| 06/16/2000 | CA2256255A1 Quantification of drilling mud cuttings characteristics as a measure of relative permeability |
| 06/16/2000 | CA2256248A1 Quantification of the characteristics of porous formations while drilling - hydrocarbon saturation index ("hcsi") |
| 06/15/2000 | WO2000034624A2 Apparatus and method for well fluid sampling |
| 06/15/2000 | CA2292159A1 Sampling probe for the in situ extraction of organic micropollutants from groundwater |
| 06/14/2000 | EP1008720A1 Method for creating a model for fluid flows in a fractured porous multi-layered medium |
| 06/08/2000 | WO2000032905A2 Improved methods for performing reservoir simulation |
| 06/06/2000 | US6070662 Formation pressure measurement with remote sensors in cased boreholes |
| 06/02/2000 | WO2000031654A2 Apparatus and method of well management |
| 06/02/2000 | CA2351728A1 Apparatus and method of well management |
| 05/31/2000 | EP1004747A2 Intelligent downhole testing system |
| 05/31/2000 | EP0890014B1 Method and system for monitoring a characteristic of an earth formation in a well |
| 05/31/2000 | CN2380686Y Cable-type layerd-detection water-searching instrument |
| 05/24/2000 | EP1003053A2 Formation evaluation using magnetic resonance logging measurements |
| 05/24/2000 | EP0753161B1 Acoustic sensor |