| 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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| 11/10/2009 | CA2270833C Gas trap for drilling mud |
| 11/05/2009 | WO2009134835A2 Method of miscible injection testing of oil wells and system thereof |
| 11/05/2009 | WO2009085615A9 Borehole imaging and orientation of downhole tools |
| 11/05/2009 | US20090272530 Annular region evaluation in sequestration wells |
| 11/05/2009 | US20090272528 Method of miscible injection testing of oil wells and system thereof |
| 11/05/2009 | US20090272186 Enhanced process for preparing core sample thin sections |
| 11/05/2009 | CA2722174A1 Method of miscible injection testing of oil wells and system thereof |
| 11/04/2009 | EP2113082A1 Method and apparatus for obtaining heavy oil samples from a reservoir sample |
| 11/03/2009 | CA2558627C Methods and apparatus for using formation property data |
| 11/03/2009 | CA2385025C Method for determining a property of a hydrocarbon-bearing formation |
| 10/29/2009 | WO2009132274A2 Apparatus and method for discharging multiple fluids downhole |
| 10/29/2009 | WO2009130633A1 Rock stress modification technique |
| 10/29/2009 | WO2008107181A9 Detection of an element in a flow |
| 10/29/2009 | US20090266154 In-borehole gas monitor apparatus and method |
| 10/29/2009 | CA2722115A1 Apparatus and method for discharging multiple fluids downhole |
| 10/29/2009 | CA2721369A1 Rock stress modification technique |
| 10/28/2009 | EP2111596A2 Method for generating reservoir models utilizing synthetic stratigraphic columns |
| 10/28/2009 | CN101566061A Method and equipment for underground characteristics of stratum fluid |
| 10/28/2009 | CN100555000C Non-contact mine pressure observing and estimating method |
| 10/27/2009 | CA2546537C Apparatus and method for obtaining downhole samples |
| 10/27/2009 | CA2528817C Apparatus and method for formation evaluation |
| 10/27/2009 | CA2528393C Marking system and method |
| 10/27/2009 | CA2517543C Apparatus and method for formation evaluation |
| 10/25/2009 | CA2664713A1 Method for modeling recovery assisted by polymer injection |
| 10/22/2009 | WO2009129289A2 Formation treatment evaluation |
| 10/22/2009 | WO2009129185A2 Apparatus and method for obtaining formation samples |
| 10/22/2009 | WO2009129128A1 Tool and method for determining formation parameter |
| 10/22/2009 | WO2009102846A3 Nmr echo train compression |
| 10/22/2009 | US20090260430 Method and Apparatus for Measurement of Formation Fluid Loss |
| 10/22/2009 | CA2721589A1 Tool and method for determining formation parameter |
| 10/22/2009 | CA2721376A1 Formation treatment evaluation |
| 10/21/2009 | EP1926886B1 Apparatus and method for continuous measurement of a physical property of a drilling fluid |
| 10/21/2009 | CN201330604Y Needle type theft-proof sampling valve for oil well |
| 10/21/2009 | CN201330603Y Splashproof rainproof crude oil sampling barrel |
| 10/21/2009 | CN101560880A Supercritical well bore multi-phase flow test device |
| 10/21/2009 | CN101560879A Well test analysis control method for low permeability gas reservoir and method thereof |
| 10/21/2009 | CN101560872A Integral combined cable-passing packer for deep well |
| 10/21/2009 | CN100552184C Method for rapidly tracking and monitoring variation of oil production inpouring bacterium |
| 10/20/2009 | US7603897 Downhole probe assembly |
| 10/20/2009 | CA2544866C Fluid analysis method and apparatus |
| 10/15/2009 | WO2009126888A2 Method for characterizing a geological formation traversed by a borehole |
| 10/15/2009 | WO2009126775A1 Methods and apparatus for collecting a downhole sample |
| 10/15/2009 | WO2009126572A2 A method and apparatus for sampling and/or testing downhole formations |
| 10/15/2009 | WO2009126570A2 Method of finite-element discretization in heterogeneous and highly conductive grid cells |
| 10/15/2009 | WO2009125161A1 Geochemical surveillance of gas production from tight gas fields |
| 10/15/2009 | US20090255729 Methods and apparatus for collecting a downhole sample |
| 10/15/2009 | US20090255679 Valve, core sampling apparatus and method |
| 10/15/2009 | US20090255672 Apparatus and method for obtaining formation samples |
| 10/15/2009 | US20090255671 Methods and apparatus for collecting a downhole sample |
| 10/15/2009 | CA2720596A1 Geochemical surveillance of gas production from tight gas fields |
| 10/14/2009 | CN201326416Y Semi-automatic balanced electric degasser |
| 10/14/2009 | CN201326415Y Direct-push sampling drill with hydraulic vibrating impacter |
| 10/14/2009 | CN201326413Y Combined well logging probe |
| 10/14/2009 | CN201326412Y Dual-drive combined well logging probe |
| 10/14/2009 | CN201326410Y Tugger of logging tool |
| 10/13/2009 | US7603236 Method to determine fluid phase distribution and quantify holdup in a wellbore |
| 10/13/2009 | US7600580 Sealed core sample barrel |
| 10/13/2009 | CA2614576C Apparatus to recover sample gases from fluids |
| 10/13/2009 | CA2509604C Downhole formation testing tool |
| 10/08/2009 | US20090250214 Apparatus and method for collecting a downhole fluid |
| 10/08/2009 | US20090250211 Refracture-Candidate Evaluation and Stimulation Methods |
| 10/08/2009 | US20090250207 Method and apparatus for sampling and/or testing downhole formations |
| 10/07/2009 | EP2004953B1 Method for optimising the production of a cluster of wells |
| 10/07/2009 | CN201321859Y Drilling injection sampling device |
| 10/07/2009 | CN201321858Y Quantitative degasser |
| 10/07/2009 | CN201321857Y Borehole logging detector |
| 10/07/2009 | CN201321856Y Device for detecting hydrogen sulfide on oil drilling spot |
| 10/07/2009 | CN201321854Y Well logging instrument cable signal recovery processing unit |
| 10/07/2009 | CN201321823Y On-site connecting joint and downhole tool employing same |
| 10/07/2009 | CN101553076A 中子发生器 Neutron generator |
| 10/07/2009 | CN101550828A Device and method for implementing focus sampling of reservoir fluid |
| 10/06/2009 | US7596995 Single phase fluid sampling apparatus and method for use of same |
| 10/06/2009 | CA2523380C Device for analysing at least one gas contained in a liquid, particularly bore fluid |
| 10/01/2009 | WO2009120790A2 A four-terminal electric imager for resistive muds with localized current control |
| 10/01/2009 | WO2009038886A9 Method and system for cleat characterization in coal bed methane wells for completion optimization |
| 10/01/2009 | US20090241658 Single phase fluid sampling apparatus and method for use of same |
| 10/01/2009 | US20090241657 Single phase fluid sampling apparatus and method for use of same |
| 09/30/2009 | CN201318173Y Underground transducer device and transducer system |
| 09/30/2009 | CN201318172Y Double-cavity electric releaser |
| 09/30/2009 | CN101545980A Well logging detector device |
| 09/30/2009 | CN101545371A Oil field device of swellable elastic body provided with nano sensors inside and method using same in oil field application |
| 09/30/2009 | CN100545417C High-temperature high-pressure clay cake interface agglutination simulating-estimating device |
| 09/29/2009 | US7594763 Fiber optic delivery system and side pocket mandrel removal system |
| 09/29/2009 | US7594541 Pump control for formation testing |
| 09/29/2009 | CA2502797C Actuation system for a downhole tool |
| 09/29/2009 | CA2488783C Method for in-situ analysis of formation parameters |
| 09/24/2009 | WO2009117504A2 Management of measurement data being applied to reservoir models |
| 09/24/2009 | WO2009117470A2 Downhole fluid characterization based on changes in acoustic properties |
| 09/24/2009 | WO2009068302A3 Downhole, single trip, multi-zone testing system and downhole testing method using such |
| 09/24/2009 | US20090235731 Methods and apparatus for analysis of downhole compositional gradients and applications thereof |
| 09/24/2009 | US20090235729 Method of estimating the fracture density in a rock medium |
| 09/23/2009 | EP2103960A2 Method and apparatus for determining position in a pipe |
| 09/23/2009 | EP2102451A1 An apparatus for use when gathering parameters from a well flow and also a method of using same |
| 09/23/2009 | CN201314232Y Electronic lock with blue teeth wireless networking function |
| 09/23/2009 | CN101539018A Deep seafloor sampling device |
| 09/23/2009 | CN101539017A Device and method for analyzing oil-water-gas by using terahertz radiation |
| 09/22/2009 | US7591306 Enhanced hydrocarbon recovery by steam injection of oil sand formations |
| 09/22/2009 | CA2561257C Methods and apparatus for estimating physical parameters of reservoirs using pressure transient fracture injection/falloff test analysis |
| 09/22/2009 | CA2524749C System and method for placement of a packer in an open hole wellbore |
| 09/22/2009 | CA2485973C Equalizer valve |