| 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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| 12/23/2009 | CN100572801C Stratum fluid test suction pump and method for sampling primary fluid in stratum |
| 12/22/2009 | US7634946 Testing of bottomhole samplers using acoustics |
| 12/22/2009 | US7634942 Tubing expansion |
| 12/22/2009 | CA2300888C Oil based drilling fluids suitable for drilling in the presence of acidic gases |
| 12/17/2009 | WO2009152337A2 Multi-resolution borehole profiling |
| 12/17/2009 | WO2009126572A3 A method and apparatus for sampling and/or testing downhole formations |
| 12/17/2009 | WO2009024202A3 A device and method for analyzing light chemical compounds |
| 12/17/2009 | US20090308604 Single Packer System for Collecting Fluid in a Wellbore |
| 12/17/2009 | US20090308600 Methods and apparatus to determine the compressibility of a fluid |
| 12/17/2009 | CA2727542A1 Multi-resolution borehole profiling |
| 12/16/2009 | CN201363142Y Damage evaluation instrument for high temperature and high pressure multifunctional horizontal well |
| 12/16/2009 | CN201363137Y Borehole compensation electromagnetic wave resistivity measurement device while drilling |
| 12/16/2009 | CN101603424A Drilling non-destructive sampling method for deep-buried rock |
| 12/16/2009 | CN101603423A Direct current method for bed-parallel advanced detection of water bearing structure in mine tunnel |
| 12/16/2009 | CN101603419A Detection method of mine direct current method for coal face coal seam perspecitivity |
| 12/16/2009 | CN100570335C Method and apparatus for a downhole refractometer and attenuated reflectance spectrometer |
| 12/16/2009 | CN100570124C Method of predicting deep oil-gas layer based on benzene and toluene abnormality of well drilling back gas |
| 12/15/2009 | US7631705 Enhanced screen auger sampling system |
| 12/15/2009 | CA2501736C Continuous wellbore drilling system with stationary sensor measurements |
| 12/15/2009 | CA2476396C Pressure controlled fluid sampling apparatus and method |
| 12/10/2009 | WO2009148843A1 Methods and apparatus to detect contaminants on a fluid sensor |
| 12/10/2009 | WO2009147564A1 Single packer system for use in a wellbore |
| 12/10/2009 | WO2008099249A3 Method and system for determining dynamic permeability of gas hydrate saturated formations |
| 12/10/2009 | US20090301781 Apparatus and system for geosteering and formation evaluation utilizing improved antennas |
| 12/10/2009 | US20090301716 Pump system for zonal isolation testing |
| 12/10/2009 | US20090301233 Method for actuating a pressure delivery system of a fluid sampler |
| 12/10/2009 | US20090301184 Apparatus for actuating a pressure delivery system of a fluid sampler |
| 12/10/2009 | CA2727137A1 Single packer system for use in a wellbore |
| 12/09/2009 | CN101598017A Device for measuring porosity of azimuth neutrons during drilling |
| 12/08/2009 | CA2416112C A method of determining properties relating to an underbalanced well |
| 12/03/2009 | WO2009146127A2 Tool and method for evaluating fluid dynamic properties of a cement annulus surrounding a casing |
| 12/03/2009 | WO2009146094A1 Apparatus and method for collecting a downhole fluid |
| 12/03/2009 | WO2009108876A3 Acoustic modified nmr (amnmr) |
| 12/03/2009 | WO2009094351A3 Apparatus and method for determining fluid properties |
| 12/03/2009 | WO2009082630A3 Fiber optic refractometer |
| 12/03/2009 | US20090296086 Terahertz analysis of a fluid from an earth formation using a downhole tool |
| 12/03/2009 | US20090294175 Downhole gas chromatograph |
| 12/03/2009 | US20090293606 Apparatus for actuating a pressure delivery system of a fluid sampler |
| 12/03/2009 | US20090293605 Device for Analyzing at Least One Gas Contained in a Liquid, in Particular a Drilling Fluid |
| 12/02/2009 | EP2126223A1 Solid body probe |
| 12/02/2009 | EP1461821B1 Method for measuring adsorbed and interstitial fluids |
| 12/02/2009 | CN201354636Y Well head polymer sampler |
| 12/02/2009 | CN201354635Y Pipeline polymer sampler |
| 12/02/2009 | CN101592031A A combined propagation and lateral resistivity downhole tool |
| 12/02/2009 | CN100565163C Method for determining the power of a test specimen, testing device and power test bench for the test specimen |
| 12/02/2009 | CN100564797C System for accommodating insert tool |
| 12/01/2009 | US7624630 Testing method and apparatus ground liquefaction and dynamic characteristics in original position utilizing boring hole |
| 12/01/2009 | CA2424228C Method and apparatus for integrated horizontal selective testing of wells |
| 11/26/2009 | WO2009142873A1 Downhole measurement of formation characteristics while drilling |
| 11/26/2009 | US20090288881 Methods and apparatus to form a well |
| 11/26/2009 | US20090288880 Method for estimating material properties of porous media using computer tomograpic images thereof |
| 11/26/2009 | US20090288824 Multi-zone formation fluid evaluation system and method for use of same |
| 11/26/2009 | US20090288820 Method Of Manufacture And The Use Of A Functional Proppant For Determination Of Subterranean Fracture Geometries |
| 11/25/2009 | EP2122120A1 Apparatus and methods of flow testing formation zones |
| 11/25/2009 | EP2122106A1 Drilling tool with fluid cleaner |
| 11/25/2009 | CN201351491Y Cored flexible nipple for horizontal well logging |
| 11/25/2009 | CN101586470A Advance drilling method for high-pressure water-rich filling cavity |
| 11/24/2009 | US7621325 Dual piston, single phase sampling mechanism and procedure |
| 11/24/2009 | CA2460687C Module for extracting gas from underground liquid and installation equipped therewith |
| 11/24/2009 | CA2377936C Sample extraction system for boreholes |
| 11/21/2009 | CA2646857A1 Method for estimating material properties of porous media using computer tomographic images thereof |
| 11/19/2009 | WO2009139992A2 Methods and apparatus to control a formation testing operation based on a mudcake leakage |
| 11/19/2009 | WO2009138911A2 Methods and apparatus for characterization of petroleum fluids contaminated with drilling mud |
| 11/19/2009 | US20090283329 Sonic latch mechanism |
| 11/19/2009 | US20090283328 Reamer with polycrystalline diamond compact inserts |
| 11/19/2009 | US20090283327 Jointed spearhead assembly |
| 11/19/2009 | US20090283266 Apparatus and method for formation evaluation |
| 11/19/2009 | US20090283265 Formation testing apparatus and methods |
| 11/19/2009 | US20090283258 Continuous fibers for use in hydraulic fracturing applications |
| 11/19/2009 | US20090282907 Methods and apparatus to control a formation testing operation based on a mudcake leakage |
| 11/19/2009 | CA2848671A1 Sonic drill bit for core sampling |
| 11/19/2009 | CA2775016A1 Sonic drill bit for core sampling |
| 11/19/2009 | CA2720810A1 Sonic drill bit for core sampling |
| 11/18/2009 | EP2120068A1 Method for estimating the physical parameters of a geological formation |
| 11/18/2009 | EP2118442A1 Fracture testing apparatus and method |
| 11/18/2009 | CN201347760Y Device for nuclear magnetic resonance measurement of high-temperature and/or high-pressure samples |
| 11/18/2009 | CN201347759Y Sidewall coring tool used in well hole formed in underground stratum |
| 11/18/2009 | CN101581222A Petroleum drilling fluid nuclear magnetic resonance while-drilling analytic |
| 11/18/2009 | CN101581219A Device and method for measurement while drilling of ground stress |
| 11/18/2009 | CN101581218A Device and method for convenient measurement while drilling of coal bed gas parameters |
| 11/18/2009 | CN101581217A Device and method for coal bed gas pressure/content measurement while drilling |
| 11/18/2009 | CN101581215A Collector capable of automatically controlling gas separation for measuring production profile of oil well |
| 11/18/2009 | CN100561195C Non-dispersed infra-red spectrometry method suitable for wide environmental temperature range |
| 11/12/2009 | WO2009137398A2 System, program product, and related methods for performing automated real-time reservoir pressure estimation enabling optimized injection and production strategies |
| 11/12/2009 | WO2009108254A3 Apparatus and method for sampling downhole fluids |
| 11/12/2009 | WO2009102526A3 Methods for the identification of bubble point pressure |
| 11/12/2009 | WO2009097510A3 Two dimensional t1/t2app-t2app processing of multi-gradient nmr data |
| 11/12/2009 | WO2008132415A9 Device for protecting a geotechnical or geophysical probe |
| 11/12/2009 | US20090277686 Analyzing Resistivity Images for Determining Downhole Events and Removing Image Artifacts |
| 11/12/2009 | DE102008001439A1 Probe determining integrity of annular borehole seals, includes ionizing radiation source and instrument detecting backscattered radiation |
| 11/11/2009 | EP2116690A1 Geochemical surveillance of gas production from tight gas fields |
| 11/11/2009 | CN201344016Y Lower sampling valve of reverse-circulation pipe string |
| 11/11/2009 | CN101575971A Stratum tester |
| 11/11/2009 | CN101575970A Lithology while drilling and reservoir characteristics recognizing method |
| 11/11/2009 | CN101575958A Electromagnetic pneumatic switch well valve of natural gas well |
| 11/10/2009 | US7617050 Method for quantifying resistivity and hydrocarbon saturation in thin bed formations |
| 11/10/2009 | US7614294 Systems and methods for downhole fluid compatibility |
| 11/10/2009 | CA2615909C Apparatus to recover sample gases from fluids |
| 11/10/2009 | CA2512480C Controlling transient pressure conditions in a wellbore |
| 11/10/2009 | CA2289333C Cuttings sample catcher and method of use |