| 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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| 09/11/2013 | CN103293555A Stratum dielectric constant and resistivity measuring instrument and method for applying same |
| 09/11/2013 | CN103291290A Slurry gas detecting method in pit |
| 09/11/2013 | CN103291289A Hydraulic sidewall contact device |
| 09/11/2013 | CN103291288A Mining wireless drilling stress sensor |
| 09/11/2013 | CN103291287A Effectiveness level measuring method for hole-type reservoirs |
| 09/11/2013 | CN103291281A Pressure-bearing outer shell of petroleum well logging instrument |
| 09/11/2013 | CN101466916B In-borehole gas monitor apparatus and method |
| 09/11/2013 | CN101309853B Apparatus for downhole fluids analysis utilizing micro electro mechanical systems (mems) or other sensors |
| 09/10/2013 | US8528396 Phase separation detection in downhole fluid sampling |
| 09/10/2013 | US8528394 Assembly and method for transient and continuous testing of an open portion of a well bore |
| 09/10/2013 | CA2676673C Method and apparatus for obtaining heavy oil samples from a reservoir sample |
| 09/10/2013 | CA2594948C Methods and apparatus to monitor contamination levels in a formation fluid |
| 09/06/2013 | WO2013130924A1 Sampling separation module for subsea and/or surface application |
| 09/05/2013 | US20130231867 System and method for modeling shale discontinuity |
| 09/04/2013 | CN203175551U Oil field oil well pipeline environment-friendly safety sampler |
| 09/04/2013 | CN203175550U 岩心密封装置 Core sealing device |
| 09/04/2013 | CN203175549U Core holding unit for simulation test of hierarchy steam injection |
| 09/04/2013 | CN203175548U Through casing pipe resistivity instrument scale detection system |
| 09/04/2013 | CN203175539U Three-component induction coil array probe line routing structure |
| 09/04/2013 | CN203175538U Lithological density logger detector |
| 09/04/2013 | CN203175534U Liquid level monitor |
| 09/04/2013 | CN203175531U Testing device used for debugging array induction |
| 09/04/2013 | CN203175480U Internal-pressure type RDS circulating valve |
| 09/04/2013 | CN203170258U Multiphase fluid disperser |
| 09/04/2013 | CN103280983A Power source system of cable formation tester for oil well logging |
| 09/04/2013 | CN103277094A Retractable full-automatic under-ice environment detector |
| 09/04/2013 | CN103277093A Formation testing method and formation tester |
| 09/04/2013 | CN103277092A Horizontal well multistage fracturing variable mass multiphase flow simulation experiment device |
| 09/04/2013 | CN103277091A High-temperature well temperature and pressure dynamic monitoring system |
| 09/04/2013 | CN101353950B On-site connection joint for downhole tool and downhole tool |
| 09/04/2013 | CN101351618B Downhole sampling device and usage method thereof |
| 09/04/2013 | CN101311495B X-ray tool for an oilfield fluid |
| 09/03/2013 | US8522870 Formation testing and sampling apparatus and methods |
| 09/03/2013 | US8522611 Method and apparatus for measuring pore pressure beyond the casing |
| 09/03/2013 | CA2621655C Method of drilling a stable borehole |
| 09/03/2013 | CA2606415C Device for extracting at least one type of gas contained in a drilling mud, an analysis arrangement and a related extraction method |
| 08/29/2013 | WO2013126710A1 Systems and methods of determining fluid properties |
| 08/29/2013 | WO2013072490A3 Well testing |
| 08/29/2013 | US20130220595 Downhole Fluid Filter |
| 08/29/2013 | US20130220594 Tube-in-tube device useful for subsurface fluid sampling and operating other wellbore devices |
| 08/28/2013 | EP2630333A2 System and method related to a sampling packer |
| 08/28/2013 | CN203161216U Quantitative simulation evaluation device of flushing efficiency of well cementing flushing fluid |
| 08/28/2013 | CN203161215U Coal seam simulator |
| 08/28/2013 | CN203161203U Triaxial quadrature coil system |
| 08/28/2013 | CN103266889A Method for predicting drillability grade values of rock in different drilling directions of shale stratum |
| 08/28/2013 | CN103266888A System and method for visualization fracturing simulation experiment |
| 08/28/2013 | CN103266870A Method and system for determining damage radius of oil and gas reservoir water blocking |
| 08/28/2013 | CN103266866A Key needle tube type anti-theft anti-freezing sampling valve |
| 08/27/2013 | US8521496 Systems and methods for improved positioning of pads |
| 08/27/2013 | US8521494 System and method for characterizing fractures in a subsurface reservoir |
| 08/22/2013 | WO2013122971A2 Systems and methods for computing surface of fracture per volume of rock |
| 08/22/2013 | WO2013122785A1 Optical fluid analyzer sampling tool using open beam optical construction |
| 08/22/2013 | WO2013122477A1 Apparatus and method for well testing |
| 08/22/2013 | WO2013039852A3 Nanostructured fluid sampling device |
| 08/22/2013 | US20130213714 Acoustic synchronization system, assembly, and method |
| 08/22/2013 | US20130213712 Coring Tool and Method |
| 08/22/2013 | US20130213648 Optical fluid analyzer sampling tool using open beam optical construction |
| 08/22/2013 | US20130213645 Downhole Formation Testing and Sampling Apparatus Having a Deployment Packer |
| 08/22/2013 | US20130213643 Consolidating Spacer Fluids and Methods of Use |
| 08/21/2013 | CN203145935U In-situ fluid sampling device in deep well |
| 08/21/2013 | CN203145934U Down-hole sampler |
| 08/21/2013 | CN203145933U Double-valve high pressure physical property sampling device |
| 08/21/2013 | CN203145932U Rock-soil sampling drill |
| 08/21/2013 | CN203145931U Experimental device and a special model system for stimulating gas-assisted steam thermal oil recovery of heavy oil reservoir |
| 08/21/2013 | CN203145930U Three-dimensional visual physical simulation experiment device |
| 08/21/2013 | CN203145919U Setting probe pedestal for formation tester |
| 08/21/2013 | CN203145918U Experimental apparatus for simulating heavy oil steam huff-and-puff recovery and model system thereof |
| 08/21/2013 | CN103257079A Three-dimensional simulating device of natural gas hydrate mining stratum stability |
| 08/21/2013 | CN103256047A Method for researching variable mass multiphase flowing regular in horizontal well fracturing completion method |
| 08/21/2013 | CN103256046A Unconventional oil and gas reservoir horizontal well section full-fracture-length fracturing parameter analog method and device |
| 08/21/2013 | CN103256045A Coal bed methane reservoir pulverized coal generation, migration, sedimentation, blocking dynamic evaluation instrument |
| 08/21/2013 | CN102322773B Ultra long blast hole detection method |
| 08/21/2013 | CN102094643B Di-gamma logging instrument |
| 08/21/2013 | CN102094641B Fracturing filling sand prevention model |
| 08/21/2013 | CN102031965B Oil-gas reservoir physical simulation wellbore radius processing method |
| 08/21/2013 | CN101798924B Icebound type pressure-maintaining and temperature-preserving sampler |
| 08/21/2013 | CN101709639B Mineshaft multiphase flow device for simulating deep-water oil and gas production |
| 08/21/2013 | CN101230780B Methods and apparatus to characterize stock-tank oil during fluid composition analysis |
| 08/20/2013 | US8511379 Downhole X-ray source fluid identification system and method |
| 08/20/2013 | CA2713396C Formation tester with fluid mobility enhancement to enable use of a low volume flow line for fluid sample collection and method of use thereof |
| 08/15/2013 | WO2013119685A1 Modeling and analysis of hydraulic fracture propagation to surface from a casing shoe |
| 08/15/2013 | WO2013102156A4 Scintillation detection device with an encapsulated scintillator |
| 08/15/2013 | WO2013019557A3 Systems and program product for performing a fully automated workflow for well performance model creation and calibration |
| 08/15/2013 | WO2013019546A3 Methods for performing a fully automated workflow for well performance model creation and calibration |
| 08/15/2013 | WO2012083068A3 Method of determining reservoir pressure |
| 08/15/2013 | US20130205887 Borehole logging system and method |
| 08/15/2013 | US20130205886 Method For Determining A Permeability Or Mobility Of A Radial Flow Response Of A Reservoir |
| 08/14/2013 | EP2625383A2 Formation sensing and evaluation drill |
| 08/14/2013 | CN203130082U Closed sampler |
| 08/14/2013 | CN203130081U Automatic high-temperature crude oil sampling system |
| 08/14/2013 | CN203130080U Experimental device of direction gamma logging instrument |
| 08/14/2013 | CN203130079U Logging while drilling resistivity near-bit measuring device |
| 08/14/2013 | CN203129999U Control system of electronically controlled hydraulically driven coiled tubing downhole tractor |
| 08/14/2013 | CN203129199U Pile hole mud sampler |
| 08/14/2013 | CN103244115A Three-dimensional relative permeability simulator |
| 08/14/2013 | CN103244114A Device for monitoring formation water out during gas drilling in real time based on microwave technology |
| 08/14/2013 | CN103244113A Hollow core model manufacturing device |
| 08/14/2013 | CN103244112A Method and device for testing flow conductivity of fracture network of shale |
| 08/14/2013 | CN103244101A Method for evaluating quality of rock stratum while drilling |
| 08/14/2013 | CN103241988A Lithologic density dual-parameter artificial stone standard module and manufacturing technique thereof |