| 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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| 05/23/2000 | US6065538 Method of obtaining improved geophysical information about earth formations |
| 05/23/2000 | US6065355 Non-flashing downhole fluid sampler and method |
| 05/23/2000 | CA2290050A1 Intelligent down hole testing system |
| 05/16/2000 | US6064944 Method for simplifying the modeling of a geological porous medium crossed by an irregular network of fractures |
| 05/16/2000 | US6062073 In situ borehole sample analyzing probe and valved casing coupler therefor |
| 05/13/2000 | CA2275820A1 Determining contact levels of fluids in an oil reservoir using a reservoir contact monitoring tool |
| 05/11/2000 | WO2000026504A1 Method to reduce water saturation in near-well region |
| 05/11/2000 | CA2347786A1 Method to reduce water saturation in near-well region |
| 05/10/2000 | EP0999348A2 Fluid sample chamber with non-reactive lining |
| 05/10/2000 | EP0999340A2 Soil sampling device |
| 05/09/2000 | US6061634 Method and apparatus for characterizing earth formation properties through joint pressure-resistivity inversion |
| 05/09/2000 | US6058773 Apparatus and method for sampling formation fluids above the bubble point in a low permeability, high pressure formation |
| 05/09/2000 | US6058772 Sampling device |
| 05/09/2000 | CA2289732A1 Device for testing rock samples under relatively high pressure and temperature |
| 05/03/2000 | EP0997609A1 Method and apparatus for compactness control of a filling |
| 05/02/2000 | US6055874 Apparatus and method for simulating well bore conditions |
| 04/26/2000 | CN1251408A Stratum pressure measuring device provided with penetrating probe and measuring method thereof |
| 04/19/2000 | EP0994238A2 Earth formation pressure measurement with penetrating probe |
| 04/18/2000 | US6052520 Process for predicting behavior of a subterranean formation |
| 04/18/2000 | US6050141 Method and apparatus for acoustic logging of fluid density and wet cement plugs in boreholes |
| 04/18/2000 | CA2056966C Downhole measurements using very short fractures |
| 04/12/2000 | EP0991845A1 Earth formation surveying device |
| 04/11/2000 | US6047782 Assembly and method for extracting discrete soil samples |
| 04/11/2000 | US6047595 Method of determining the permeability of sedimentary strata using NMR data |
| 04/05/2000 | CN2372447Y Eight-arm telescoping ram of petroleum logging instrument |
| 04/05/2000 | CN1249392A Measurement of rock pressure using distance sensor in casing drilling |
| 04/04/2000 | US6047239 Formation testing apparatus and method |
| 03/29/2000 | EP0988520A2 Soil testing assemblies |
| 03/29/2000 | EP0988440A1 Control and monitoring system for chemical treatment of an oilfield well |
| 03/29/2000 | CN1248664A Rock formation pressure measuring made simultaneously by drilling with a no-rotary sleeve |
| 03/28/2000 | US6042715 Method for modeling the crystallization of paraffins in petroleum fluids |
| 03/28/2000 | US6041860 Apparatus and method for performing imaging and downhole operations at a work site in wellbores |
| 03/28/2000 | US6041856 Real-time pump optimization system |
| 03/21/2000 | US6039128 Method and system for obtaining core samples during the well-drilling phase by making use of a coring fluid |
| 03/16/2000 | WO2000014383A1 In situ borehole sample analyzing probe and valved casing coupler therefor |
| 03/15/2000 | CN1247270A Elongated logging and early trial production system for marine petroleum exploration |
| 03/15/2000 | CN1247269A Method and facilities for drilling well, logging and early trial production at same time |
| 03/14/2000 | US6038389 Method of modeling a physical process in a material environment |
| 03/14/2000 | US6035950 Method and apparatus for fluid and soil sampling |
| 03/14/2000 | US6035939 Wellbore anchor system |
| 03/09/2000 | WO2000013349A1 Drill string telemetry with insulator between receiver and transmitter |
| 03/09/2000 | DE19838200A1 System zur automatisierten Bodenprobenentnahme System for automated soil sampling |
| 03/08/2000 | EP0984135A2 Formation pressure measurement with remote sensors in cased boreholes |
| 03/01/2000 | EP0982471A2 Automated soil sampling system |
| 02/29/2000 | US6032102 Method and apparatus for measuring well characteristics and formation properties |
| 02/29/2000 | US6029744 Method and apparatus for retrieving fluid samples during drill stem tests |
| 02/24/2000 | WO2000009857A1 Method and apparatus for exploration drilling |
| 02/24/2000 | WO2000009854A1 Method and apparatus for anchoring a tool within a cased borehole |
| 02/22/2000 | US6028992 Method for constituting a model representative of multiphase flows in oil production pipes |
| 02/22/2000 | US6028534 Formation data sensing with deployed remote sensors during well drilling |
| 02/22/2000 | US6026915 Early evaluation system with drilling capability |
| 02/22/2000 | US6026900 Multiple liner method for borehole access |
| 02/09/2000 | EP0978630A2 Formation pressure measurement while drilling utilizing a non-rotating sleeve |
| 02/09/2000 | EP0977932A1 A method and an apparatus for use in production tests, testing an expected permeable formation |
| 02/08/2000 | US6023656 Method for determining the equivalent fracture permeability of a fracture network in a subsurface multi-layered medium |
| 02/08/2000 | US6023445 Determining contact levels of fluids in an oil reservoir using a reservoir contact monitoring tool |
| 02/08/2000 | US6021664 Automated groundwater monitoring system and method |
| 02/08/2000 | US6021662 Method for modeling fluid displacements in a porous medium |
| 02/04/2000 | CA2278266A1 Formation pressure measurement while drilling utilizing a non-rotating stabilizer |
| 02/02/2000 | EP0975855A1 Method and apparatus which uses a combination of fluid injection and resistivity measurements |
| 01/26/2000 | EP0973997A1 Method and apparatus for the downhole compositional analysis of formation gases |
| 01/13/2000 | WO2000001927A1 Method of determining in-situ stresses in an earth formation |
| 01/05/2000 | EP0839255A4 Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing |
| 01/05/2000 | CN2357131Y Petroleum logging electrode bridle |
| 01/04/2000 | US6012016 Method and apparatus for managing well production and treatment data |
| 01/04/2000 | US6009958 Soil sampling apparatus and a geological observation method using the same |
| 12/28/1999 | US6006834 Formation evaluation testing apparatus and associated methods |
| 12/28/1999 | US6006832 Method and system for monitoring and controlling production and injection wells having permanent downhole formation evaluation sensors |
| 12/28/1999 | CA2000665C Process and apparatus for logging of non eruptive producing well |
| 12/22/1999 | EP0618994B1 Sidewall rotary coring tool |
| 12/21/1999 | US6003620 Downhole in-situ measurement of physical and or chemical properties including fluid saturations of cores while coring |
| 12/21/1999 | US6003365 Characterization of organic contaminants and assessment of remediation performance in subsurface formations |
| 12/14/1999 | US6002985 Method of controlling development of an oil or gas reservoir |
| 12/14/1999 | US6002063 Apparatus and method for subterranean injection of slurried wastes |
| 12/14/1999 | US6000481 Method and apparatus for environmental sampling |
| 12/14/1999 | US6000470 Self-locking connector |
| 12/07/1999 | CA2200638C Acoustic pulse gun assembly |
| 12/01/1999 | EP0960261A1 Tool and method for drilling a lateral well |
| 12/01/1999 | EP0960260A1 Tool for making an opening in a tubular in a wellbore |
| 12/01/1999 | CN1236860A Apparatus and method for determining drilling mode to optimize formation evaluation measurements |
| 11/30/1999 | US5992228 Method for determining resistivity derived porosity and porosity derived resistivity |
| 11/30/1999 | US5992213 Method for testing soil contamination |
| 11/23/1999 | CA2087153C Adsorber device and process for using same |
| 11/16/1999 | US5984023 Downhole in-situ measurement of physical and or chemical properties including fluid saturations of cores while coring |
| 11/11/1999 | WO1999057418A1 Near wellbore modeling method and apparatus |
| 11/11/1999 | WO1999057417A2 Chemical actuation system for downhole tools and method for detecting failure of an inflatable element |
| 11/10/1999 | EP0750716B1 Milling tool |
| 11/09/1999 | US5979569 Method and apparatus for environmental sampling |
| 11/03/1999 | EP0953726A1 Apparatus and method for wellbore testing of formation fluids using acoustic signals |
| 11/02/1999 | US5974874 Method for testing gas wells in low pressured gas formations |
| 10/28/1999 | WO1999054591A1 Controlling multiple downhole tools |
| 10/20/1999 | EP0950795A2 Tool for and method of geological formation evaluation testing |
| 10/20/1999 | EP0646215B1 Method and apparatus for pressure, volume, and temperature measurement and characterization of subsurface formations |
| 10/20/1999 | CN2344544Y Sidewall contact hole diameter microelectrode combined logging instrument |
| 10/19/1999 | US5969241 Method and apparatus for measuring formation pressure |
| 10/19/1999 | US5967232 Borehole-conformable tool for in-situ stress measurements |
| 10/12/1999 | US5965810 Method for determining sedimentary rock pore pressure caused by effective stress unloading |
| 10/07/1999 | WO1999050528A1 Drillstring with stabilisers for re-entering a primary wellbore |
| 09/28/1999 | US5960369 Method and apparatus for predicting the fluid characteristics in a well hole |
| 09/28/1999 | US5960187 Method for forming a simulation model of transient two-phase flows in pipelines |