| 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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| 07/03/2008 | WO2008078060A1 A system and method for robustly and accurately obtaining a pore pressure measurement of a subsurface formation penetrated by a wellbore |
| 07/03/2008 | US20080156537 Core Barrel Capacity Gauge |
| 07/03/2008 | US20080156487 Formation Fluid Sampling Apparatus and Methods |
| 07/03/2008 | US20080156486 Pump Control for Formation Testing |
| 07/03/2008 | DE102007036410A1 Fluidprobennahmesystem und Bohrlochwerkzeug Fluid sampling system and downhole tool |
| 07/02/2008 | EP1937937A2 A method and apparatus for elemental analysis of a fluid downhole |
| 07/02/2008 | CN201080821Y Flexible rotating combined instrument |
| 07/02/2008 | CN101210546A Pump control for formation testing |
| 07/02/2008 | CN101210492A Formation fluid sampling apparatus and methods |
| 07/02/2008 | CN101210491A Gas pretreatment device with alarm mechanism |
| 07/01/2008 | US7392719 Devices and methods for sampling groundwater |
| 06/28/2008 | CA2594948A1 Methods and apparatus to monitor contamination levels in a formation fluid |
| 06/28/2008 | CA2593943A1 Integrated electrode resistivity and em telemetry tool |
| 06/26/2008 | WO2008077142A2 Acoustic fluid analysis method |
| 06/26/2008 | WO2008076909A2 Acoustic fluid analysis method |
| 06/26/2008 | WO2008035215A3 Device for channeling solids and fluids within a reverse circulation drill |
| 06/26/2008 | US20080149332 Multi-probe pressure test |
| 06/25/2008 | EP1936113A1 2d Well Testing with Smart Plug Sensors |
| 06/25/2008 | EP1936112A2 Method, system and tool for reservoir evaluation and well testing during drilling operations |
| 06/25/2008 | CN201078226Y Density calibrations apparatus with auto hydraulic pressure pulling and leaning equipment |
| 06/25/2008 | CN201078211Y New type testing bulkhead |
| 06/19/2008 | WO2008051900A3 High accuracy contamination estimation in hydrocarbon samples using gc x gc |
| 06/19/2008 | US20080142214 Pore fluid sampling system with diffusion barrier |
| 06/18/2008 | EP1931858A1 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 06/18/2008 | EP1313931B1 Method of determining fluid flow |
| 06/18/2008 | CN201075864Y Thick film circuit for remote indicating instrument analogue signal gathering |
| 06/18/2008 | CN201074515Y Anti-theft sampling valve for oil extractor |
| 06/18/2008 | CN201074514Y Anti-theft sampler of oil well head |
| 06/18/2008 | CN101201003A Methods and systems for sampling heavy oil reservoirs |
| 06/18/2008 | CN101201002A Long-range single-cord well logging bus control system |
| 06/18/2008 | CA2614563A1 Devices, systems and methods for assessing porous media properties |
| 06/17/2008 | US7387175 Window reaming and coring apparatus and method of use |
| 06/17/2008 | CA2491192C Method for determining pressure of earth formations |
| 06/17/2008 | CA2482931C Method for improving drilling depth measurements |
| 06/17/2008 | CA2482922C Method and apparatus for determining drill string movement mode |
| 06/17/2008 | CA2456107C Fracture closure pressure determination |
| 06/17/2008 | CA2438134C Process for predicting porosity and permeability of a coal bed |
| 06/17/2008 | CA2435945C Combining nmr, density, and dielectric measurements for determining downhole reservoir fluid volumes |
| 06/15/2008 | CA2739599A1 High voltage x-ray generator and related oil well formation analysis apparatus and method |
| 06/15/2008 | CA2615144A1 Spectrograph tool |
| 06/12/2008 | WO2008070170A2 Portable gas monitor |
| 06/12/2008 | US20080135299 Apparatus and Method for Characterizing a Reservoir |
| 06/12/2008 | US20080135239 Methods and Systems for Sampling Heavy Oil Reservoirs |
| 06/12/2008 | US20080135236 Method and Apparatus for Characterizing Gas Production |
| 06/11/2008 | CN201071719Y Device for sampling fluid from well |
| 06/11/2008 | CN201071718Y Tubular pile type desander |
| 06/11/2008 | CN201071717Y Crude sampler |
| 06/11/2008 | CN201071716Y Neutron logging instrument for minor diameter oil well |
| 06/10/2008 | US7386430 Method of correcting triaxial induction arrays for borehole effect |
| 06/10/2008 | CA2397409C Downhole densitometer |
| 06/05/2008 | WO2008066545A1 Apparatus and methods for sidewall percussion coring using a voltage activated igniter |
| 06/05/2008 | WO2008064402A1 Downhole fluid property chromatography |
| 06/05/2008 | WO2007098221A3 A method and apparatus for ion-selective discriminaion of fluids downhole |
| 06/05/2008 | US20080128166 Method to Improve Downhole Instruments |
| 06/05/2008 | US20080128127 Method and apparatus for long term seismic monitoring |
| 06/05/2008 | US20080127726 Portable gas monitor |
| 06/04/2008 | EP1926988A1 Electro-chemical sensor |
| 06/04/2008 | EP1926886A1 Apparatus and method for continuous measurement of a physical property of a drilling fluid |
| 06/04/2008 | CN100392207C Method for predicting drilling system performance for given formation and its system |
| 06/03/2008 | US7380615 Core sample extraction system |
| 06/03/2008 | US7380599 Apparatus and method for characterizing a reservoir |
| 06/03/2008 | US7380598 Method for detecting fluid leakage from a subterranean formation |
| 06/03/2008 | US7380597 Deployment of underground sensors |
| 05/29/2008 | WO2008032196A3 Downhole fluid analysis for production logging |
| 05/29/2008 | WO2007109772A3 Method and apparatus for detecting water in a fluid media |
| 05/29/2008 | WO2007048991A8 Downhole sampling apparatus and method for using same |
| 05/29/2008 | US20080125973 System and method for real-time management of formation fluid sampling with a guarded probe |
| 05/29/2008 | US20080123470 Gas minimization in riser for well control event |
| 05/29/2008 | US20080121394 Downhole Sampling Tool and Method for Using Same |
| 05/29/2008 | DE202008004286U1 System zur Entnahme von Grundwasserproben aus definierten Tiefenbereichen System for the collection of groundwater samples from defined depth ranges |
| 05/28/2008 | CN101189409A Methods and apparatus of downhole fluid analysis |
| 05/28/2008 | CN101187961A Output prediction system for emission hole complete well |
| 05/27/2008 | US7379819 Reservoir sample chain-of-custody |
| 05/27/2008 | US7377169 Apparatus and methods for acoustically determining fluid properties while sampling |
| 05/24/2008 | CA2612392A1 Centrifugal pump with screw pump accelerator and reverse flow vane |
| 05/22/2008 | WO2008029232A3 Method in an oil and/or gas production system for parameter testing. |
| 05/22/2008 | US20080115575 Apparatus and Methods to Perform Downhole Measurements associated with Subterranean Formation Evaluation |
| 05/22/2008 | US20080115574 Apparatus and Methods to Perform Downhole Measurements associated with Subterranean Formation Evaluation |
| 05/21/2008 | CN201063586Y Petroleum logging telegauge cable transmission driving thick film circuit |
| 05/21/2008 | CN101182770A Capacitance-type sensor used for horizontal well moisture percentage measurement |
| 05/21/2008 | CN101182769A Reservoir sample chain-of-custody |
| 05/21/2008 | CA2594950A1 Apparatus and methods to perform downhole measurements associated with subterranean formation evaluation |
| 05/20/2008 | US7373994 Self cleaning coring bit |
| 05/20/2008 | US7373812 Apparatus for sampling and logging on all producing zones of a well |
| 05/15/2008 | WO2007145841A3 A method and apparatus for collecting fluid samples downhole |
| 05/15/2008 | CA2668625A1 Apparatus and method for estimating filtrate contamination in a formation fluid |
| 05/14/2008 | EP1920136A2 Rotary coring device and method for acquiring a sidewall core from an earth formation |
| 05/14/2008 | EP1920135A2 Multi-purpose downhole tool |
| 05/14/2008 | EP1604187B1 A method and apparatus for downhole quantification of methane using near infrared spectroscopy |
| 05/14/2008 | CN201060934Y Centered nuclear magnetic resonance logging instrument probe antenna |
| 05/14/2008 | CN201060270Y Test device used for petroleum well logging instrument |
| 05/14/2008 | CN201059188Y Flexible connector base-piece and flexible connector |
| 05/14/2008 | CN201059167Y Round spindle telescopic joint |
| 05/14/2008 | CN101180446A Method for drilling stable borehole |
| 05/13/2008 | US7372264 Contamination estimation using fluid analysis models |
| 05/08/2008 | WO2008021743A3 Facilitating oilfield development with downhole fluid analysis |
| 05/08/2008 | US20080105425 Electromagnetic surveying for hydrocarbon reservoirs |
| 05/08/2008 | US20080105424 Method of drilling and producing hydrocarbons from subsurface formations |
| 05/07/2008 | EP1917619A2 Well modeling associated with extraction of hydrocarbons from subsurface formations |
| 05/07/2008 | CN201057044Y Sliding plate of lithology density logger with variable structure parameter |