| 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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| 06/25/2009 | US20090159276 Methods and Apparatus for Communicating Across Casing |
| 06/24/2009 | EP2072749A2 Monitoring Apparatus for Core Barrel Operations |
| 06/24/2009 | EP1877646B1 Methods and apparatus of downhole fluid analysis |
| 06/24/2009 | CN201262084Y Anti-theft sampling device |
| 06/24/2009 | CN201262083Y Double-flow passage current collector |
| 06/23/2009 | US7549473 Liquid removal system and method |
| 06/23/2009 | CA2434659C Retrieving a sample of formation fluid in a cased hole |
| 06/23/2009 | CA2319789C Improved process for predicting behavior of a subterranean formation |
| 06/22/2009 | CA2646782A1 Measurement tool and method of use |
| 06/18/2009 | US20090151937 Well thermal insulation for formation sampling of viscous fluids |
| 06/18/2009 | US20090151443 High pressure screen flow-through testing device |
| 06/18/2009 | CA2702965A1 Parallel adaptive data partitioning on a reservoir simulation using an unstructured grid |
| 06/17/2009 | EP2069607A1 Methods and systems for well stimulation using multiple angled fracturing |
| 06/17/2009 | EP2069605A1 Core barrel capacity gauge |
| 06/17/2009 | CN201258737Y 测井仪器 Logging equipment |
| 06/17/2009 | CN100501122C Fluorescent logging method under non-toxic water system |
| 06/16/2009 | US7546885 Apparatus and method for obtaining downhole samples |
| 06/11/2009 | WO2009073354A1 Sidewall coring tool and method for marking a sidewall core |
| 06/11/2009 | US20090145599 Method System and Program Storage Device for Simulating A Multilayer Reservoir and Partially Active Elements In A Hydraulic Fracturing Simulator |
| 06/10/2009 | EP2068263A2 Method and apparatus for estimating the physical state of a physical system |
| 06/10/2009 | EP2067927A2 Single phase fluid sampling apparatus and method for use of same |
| 06/10/2009 | CN201254990Y Downhole tool |
| 06/10/2009 | CN201254989Y On-line detection device for water content of oil well |
| 06/10/2009 | CN101451434A Downhole imaging tool utilizing x-ray generator |
| 06/10/2009 | CN101451433A Hermetically sealed packaging and neutron shielding for scintillation-type radiation detectors |
| 06/10/2009 | CN100497885C Deuterium-deuterium controllable compensating neutron well logging instrument during drilling |
| 06/09/2009 | US7543635 Fracture characterization using reservoir monitoring devices |
| 06/09/2009 | CA2539861C Modular downhole tool system |
| 06/09/2009 | CA2385427C Method and system for simulating a hydrocarbon-bearing formation |
| 06/09/2009 | CA2351109C Method for evaluating the physical parameters of an underground deposit from collected rock cuttings |
| 06/04/2009 | WO2009070672A1 In-situ formations strength testing with formation sampling |
| 06/04/2009 | WO2009070175A1 Screened valve system for selective well stimulation and control |
| 06/04/2009 | WO2009068957A1 Methods and apparatus to determine a concentration of nitrogen in a downhole fluid |
| 06/04/2009 | WO2009068302A2 Downhole, single trip, multi-zone testing system and downhole testing method using such |
| 06/04/2009 | WO2009068191A1 Retrievable downhole testing tool |
| 06/04/2009 | WO2009048768A3 Modular connector and method |
| 06/04/2009 | WO2009042774A3 Apparatus and methods for continuous coring |
| 06/04/2009 | US20090139768 Apparatus and Methods for Continuous Tomography of Cores |
| 06/04/2009 | US20090139712 Conductive Cement Formulation and Application for use in Wells |
| 06/04/2009 | CA2707134A1 Retrievable downhole testing tool |
| 06/04/2009 | CA2707088A1 Downhole, single trip, multi-zone testing system and downhole testing method using such |
| 06/04/2009 | CA2705909A1 In-situ formation strength testing with formation sampling |
| 06/04/2009 | CA2704834A1 Screened valve system for selective well stimulation and control |
| 06/03/2009 | EP2065556A1 Retrievable downhole testing tool |
| 06/03/2009 | CN101446198A Apparatus for automatic and continuous measurement of delivery capacity, specific gravity and viscosity of drilling mud |
| 06/03/2009 | CN101446197A Sidewall coring tool and method for marking a sidewall core |
| 06/03/2009 | CN101446196A Well test analysis method and device of treble medium oil pool branch horizontal well |
| 06/03/2009 | CN101446195A Synchronous observation seismic logging method for multiple observation systems |
| 06/02/2009 | US7540165 Downhole sorption cooling and heating in wireline logging and monitoring while drilling |
| 06/02/2009 | CA2552514C Formation evaluation system and method |
| 06/02/2009 | CA2541190C Apparatus and method for sensing downhole parameters |
| 06/02/2009 | CA2447468C Simplified antenna structures for logging tools |
| 05/28/2009 | WO2009067440A1 Formation evaluation while drilling |
| 05/28/2009 | WO2009065793A1 In-situ fluid compatibility testing using a wireline formation tester |
| 05/28/2009 | US20090138202 Method and apparatus for imaging bed boundaries using azimuthal propagation resistivity measurements |
| 05/28/2009 | US20090133871 Drilling, perforating and formation analysis |
| 05/28/2009 | US20090133486 In-situ formation strength testing |
| 05/28/2009 | CA2703889A1 In-situ fluid compatibility testing using a wireline formation tester |
| 05/27/2009 | CN201246164Y Sampling anti-freeze valve of oil pumping machine well head |
| 05/27/2009 | CN201246160Y Inner graduation circuit of high-frequency electromagnetic wave well logging instrument |
| 05/27/2009 | CN101441185A High pressure/high temperature magnetic resonance tool |
| 05/27/2009 | CN101440705A Super-deep well wireless transmission well testing system |
| 05/22/2009 | WO2009064899A2 Downhole x-ray source fluid identification system and method |
| 05/22/2009 | WO2009064691A1 Formation evaluation method |
| 05/22/2009 | WO2009064557A1 Apparatus and methods to analyze downhole fluids using ionized fluid samples |
| 05/22/2009 | WO2009064556A1 Apparatus and methods to analyze downhole fluids using ionized fluid samples |
| 05/22/2009 | WO2009023852A4 Apparatus and methods for pulse testing a formation |
| 05/21/2009 | US20090132458 Intelligent Drilling Advisor |
| 05/21/2009 | US20090126996 Formation evaluation while drilling |
| 05/21/2009 | US20090126928 Apparatus and methods to analyze downhole fluids using ionized fluid samples |
| 05/21/2009 | US20090126475 Determining Permeability Using Formation Testing Data |
| 05/20/2009 | EP2059653A2 Method in an oil and/or a gas production system |
| 05/20/2009 | CN201241701Y Anti-theft sampling valve of oil well |
| 05/20/2009 | CN201241700Y Natural gamma energy spectrometer with miniaturized circuit |
| 05/20/2009 | CN201241699Y Casing tube deformation logger |
| 05/20/2009 | CN201241691Y Cable brittle failure-proof pressured well logging construction apparatus |
| 05/20/2009 | CN201241689Y Five-parameter combination logging tool |
| 05/20/2009 | CN201241632Y Spring self-switching type Y-shaped joint |
| 05/20/2009 | CN101435750A Non-interfering type deep sea hydrate probe boring sampling apparatus |
| 05/20/2009 | CN101435749A Drill stem type hydrate probe boring sampling apparatus |
| 05/20/2009 | CN101435748A Cable rotary type hydrate probe boring sampling apparatus |
| 05/20/2009 | CN101435331A Method for making cracking rock core |
| 05/20/2009 | CN101435330A Method for making man-made rock core target |
| 05/20/2009 | CN100489489C Method and system for estimating gas produced by a landfill or other subsurface source |
| 05/20/2009 | CN100489267C Logging instrument of natural potential in high resolution |
| 05/20/2009 | CN100489266C Method for detecting fluid-channeling channel of oil field |
| 05/19/2009 | CA2481639C Improving reservoir communication by creating a local underbalance and using treatment fluid |
| 05/15/2009 | CA2768031A1 Modular apparatus for production testing |
| 05/14/2009 | WO2009061869A1 Subterranean formation properties prediction |
| 05/14/2009 | US20090125288 Hydrocarbon Recovery From a Hydrocarbon Reservoir |
| 05/14/2009 | US20090125238 Method for Mechanical and Capillary Seal Analysis of a Hydrocarbon Trap |
| 05/14/2009 | CA2702827A1 Subterranean formation properties prediction |
| 05/13/2009 | CN201236703Y Anti-theft sampling cock for Christmas tree shaft mouth |
| 05/13/2009 | CN201236702Y Anti-freezing sampler |
| 05/13/2009 | CN201236701Y Multifunctional combined logging instrument for petroleum exploration |
| 05/13/2009 | CN201236700Y Sector cement bond logging instrument |
| 05/13/2009 | CN201236694Y Total hydrocarbon intelligent logging instrument |
| 05/13/2009 | CN201236693Y Rotating halter apparatus |
| 05/13/2009 | CN101430402A Hydrocarbon monitoring cable |
| 05/13/2009 | CN101429866A Wing rib telescopic while-drilling density logger |