| 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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| 04/01/2009 | EP1623091B1 A method and apparatus for a downhole micro-sampler |
| 04/01/2009 | CN101397908A Method for simultaneous removing oil and salt in rock core |
| 04/01/2009 | CN101397907A Method and apparatus for eliminating directly coupling signal of induction logging tool |
| 04/01/2009 | CN101397901A A logging while producing apparatus and method |
| 03/31/2009 | US7511819 Light source for a downhole spectrometer |
| 03/31/2009 | CA2460831C Dual piston single phase sampling mechanism and procedure |
| 03/26/2009 | WO2009038886A1 Method and system for cleat characterization in coal bed methane wells for completion optimization |
| 03/26/2009 | US20090083009 Computer system and method for modeling fluid depletion |
| 03/26/2009 | US20090078467 Apparatus and Methods For Continuous Coring |
| 03/25/2009 | EP2039880A2 Multi-level static sampler |
| 03/25/2009 | EP2038514A1 Sampling tool for hydrocarbon-producing wells |
| 03/25/2009 | EP1427912B1 Dual piston single phase sampling mechanism and procedure |
| 03/25/2009 | CN101393188A Method for characterization research of depth fluid flowing diverting agent in oil field |
| 03/25/2009 | CN101392648A Probing ahead and sampling apparatus for coalbed gas in exploratory boring |
| 03/25/2009 | CN101392647A Borehole wall stability prediction method suitable for gas drilling |
| 03/25/2009 | CN101392646A Acoustic logging instrument of novel acoustic array structure |
| 03/25/2009 | CN101392645A Rapid phase discrimination and automatic transmission unit |
| 03/25/2009 | CN101392644A Experimental method and apparatus for detecting oil and water distribution in strata by laser light conducting fiber |
| 03/24/2009 | CA2505293C Method and apparatus for using pulsed field gradient nmr measurements to determine fluid properties in a fluid sampling well logging tool |
| 03/20/2009 | CA2639578A1 Circulation pump for circulating downhole fluids, and characterization apparatus of downhole fluids |
| 03/20/2009 | CA2639577A1 Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids |
| 03/19/2009 | US20090071721 Drill core extractor |
| 03/19/2009 | US20090071239 Methods for optimizing petroleum reservoir analysis |
| 03/19/2009 | CA2639313A1 Method and system to improve engineered system decisions and transfer risk |
| 03/18/2009 | EP2037080A1 Method for determining the permeability of a network of fractures based on a connectivity analysis |
| 03/18/2009 | CN201209445Y Lithology density-microballoons focused device composite probe |
| 03/12/2009 | US20090066959 Apparatus and Method for Estimating a Property of a Fluid in a Wellbore Using Photonic Crystals |
| 03/12/2009 | US20090065253 Method and system for increasing production of a reservoir |
| 03/12/2009 | US20090065252 System and Method for Stress Field Based Wellbore Steering |
| 03/12/2009 | US20090065198 Method and system for increasing production of a reservoir using lateral wells |
| 03/11/2009 | EP2032795A2 Device for channeling solids and fluids within a reverse circulation drill |
| 03/11/2009 | EP1397579B1 Method, system and tool for reservoir evaluation and well testing during drilling operations |
| 03/11/2009 | CN101382071A Core clamping device |
| 03/11/2009 | CN101382070A Electromagnetical method for dynamically monitoring oil reservoir injection-production |
| 03/11/2009 | CN101382069A Continuous tube horizontal borehole process and device |
| 03/11/2009 | CN100467828C Construction method of optical fiber television logging instrument for detecting fish top detection |
| 03/10/2009 | US7500517 Kerogen extraction from subterranean oil shale resources |
| 03/10/2009 | US7500389 Tubing expansion |
| 03/10/2009 | US7500388 Method and apparatus for in-situ side-wall core sample analysis |
| 03/10/2009 | CA2545492C Method and apparatus for downhole fluid analysis using molecularly imprinted polymers |
| 03/05/2009 | WO2009029521A1 Automated formation fluid clean-up to sampling switchover |
| 03/04/2009 | CN201202473Y Magnetic nuclear resonance logger |
| 03/04/2009 | CN201202464Y Ground system operation console of well logging instrument |
| 03/04/2009 | CN101379271A Methods, systems, and computer-readable media for real-time oil and gas field production optimization using a proxy simulator |
| 03/04/2009 | CN101377130A Experiment well for testing multiple-component induction logging instrument |
| 03/04/2009 | CN101377129A Transducer assemblies for subsurface logging use |
| 03/04/2009 | CN101377128A Downhole tools with solid-state neutron monitors |
| 03/03/2009 | US7497256 Method and apparatus for collecting fluid samples downhole |
| 02/26/2009 | WO2009026357A2 Determination of point of sand production initiation in wellbores using residual deformation characteristics and real time monitoring of sand production |
| 02/26/2009 | WO2009026051A1 Apparatus and methods to control fluid flow in a downhole tool |
| 02/26/2009 | WO2009025688A1 Apparatus and method for fluid property measurements |
| 02/26/2009 | WO2009024545A1 Method for controlling production and downhole pressures of a well with multiple subsurface zones and/or branches |
| 02/26/2009 | WO2009024202A2 A device and method for analyzing light chemical compounds |
| 02/26/2009 | WO2009009409A4 Methods of calibrating a fluid analyzer for use in a wellbore |
| 02/26/2009 | US20090050373 Providing a rechargeable hydraulic accumulator in a wellbore |
| 02/26/2009 | US20090050369 Downhole measurement of formation characteristics while drilling |
| 02/26/2009 | US20090049904 Automated formation fluid clean-up to sampling switchover |
| 02/26/2009 | US20090049889 Downhole measurement of formation characteristics while drilling |
| 02/26/2009 | CA2697455A1 A device and method for analyzing light chemical compounds |
| 02/26/2009 | CA2696816A1 Apparatus and method for fluid property measurements |
| 02/26/2009 | CA2692996A1 Method for controlling production and downhole pressures of a well with multiple subsurface zones and/or branches |
| 02/25/2009 | EP2028341A1 A device and method for analyzing light chemical compounds |
| 02/25/2009 | EP2027365A2 Measurement while drilling tool with interconnect assembly |
| 02/25/2009 | CN201198757Y Early-warning system for avoiding collision of oil gas well drilling neighboring wellbores |
| 02/25/2009 | CN101372890A Creep determination technique |
| 02/24/2009 | US7493954 Systems and methods for installation, design and operation of groundwater monitoring systems in boreholes |
| 02/24/2009 | US7493803 Ball penetrometer for soft soils testing |
| 02/19/2009 | WO2009023852A2 Apparatus and methods for pulse testing a formation |
| 02/19/2009 | WO2007100564A4 A method and apparatus for a downhole spectrometer based on tunable optical filters |
| 02/19/2009 | US20090047181 Determining fluid chemistry of formation fluid by downhole reagent injection spectral analysis |
| 02/18/2009 | CN201196624Y Gaseous hydrocarbon component measuring apparatus suitable for wide environment temperature range |
| 02/18/2009 | CN201196092Y Shaft mouth low-pressure sampler for injection shaft |
| 02/18/2009 | CN201196091Y Lateral pressure apparatus |
| 02/18/2009 | CN201196089Y Communication circuit used for down-hole instrument |
| 02/18/2009 | CN201196088Y High-speed data transmission apparatus used for petroleum logging |
| 02/18/2009 | CN201196078Y Friction force reinforced logging cable clamper |
| 02/18/2009 | CN201196051Y Sampling anti-theft device for intelligent remote control type shaft mouth |
| 02/18/2009 | CN101368481A Quantitative analysis method for oil-containing abundance of nuclear magnetic resonance rock in petroleum well drilling |
| 02/18/2009 | CN101368480A Boring elastic modulus instrument probe |
| 02/17/2009 | US7490664 Drilling, perforating and formation analysis |
| 02/17/2009 | CA2406794C Methods for improving oil production |
| 02/12/2009 | WO2009021010A2 System and method for stress field based wellbore steering |
| 02/12/2009 | WO2009018883A1 Drainage method for multilayer reservoirs |
| 02/12/2009 | WO2008149240A3 Bit for drilling wells and associated drilling method |
| 02/12/2009 | US20090038853 Mini Core Drilling Samples for High Resolution Formation Evaluation on Drilling Cuttings Samples |
| 02/12/2009 | US20090038390 Method and system for monitoring soil properties |
| 02/12/2009 | US20090038389 Formation gas pore pressure evaluation on drilling cuttings samples |
| 02/11/2009 | EP2022935A1 Drainage method for multilayer reservoirs |
| 02/11/2009 | EP2021769A1 Method and system for monitoring a fluid flowing through a conduit, and method of producing a hydrocarbon fluid |
| 02/11/2009 | EP2021768A1 Terahertz analysis of a fluid from an earth formation using a downhole tool |
| 02/11/2009 | CN201193523Y Liquid metering device for oil well |
| 02/11/2009 | CN101363315A Method for quantifying resistivity and hydrocarbon saturation in thin bed formations |
| 02/10/2009 | US7490028 Method, apparatus and system for pore pressure prediction in presence of dipping formations |
| 02/10/2009 | CA2790208A1 Removing effects of near surface geology from surface-to-borehole electromagnetic data |
| 02/10/2009 | CA2638399A1 Removing effects of near surface geology from surface-to-borehole electromagnetic data |
| 02/06/2009 | CA2638227A1 Method for evaluating a flow sheet for an underground deposit taking uncertainties into account |
| 02/05/2009 | WO2009018376A1 Method and system to obtain a compositional model of produced fluids using separator discharge data analysis |
| 02/05/2009 | WO2009016386A1 Methods and systems for evaluating and treating previously-fractured subterranean formations |
| 02/05/2009 | WO2008152345A3 Multi-zone formation fluid evaluation system and method for use of same |
| 02/05/2009 | US20090032258 Openhole perforating |