| 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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| 07/13/2011 | CN201896612U Downhole temperature sensor |
| 07/13/2011 | CN102124185A Systems and methods for utilizing cell based flow simulation results to calculate streamline trajectories |
| 07/13/2011 | CN102121381A Shearing simulative device for near wellbore zone with circular platform barrel body |
| 07/13/2011 | CN102121380A Combined cylindrical barrel near wellbore area shear simulation device |
| 07/13/2011 | CN102121377A Pressure-while-drilling measuring device and measurement method thereof |
| 07/13/2011 | CN102121374A Borehole time domain pulse electromagnetic method for detecting electrical resistivity of stratum out of metal bushing |
| 07/12/2011 | CA2594597C High voltage x-ray generator and related oil well formation analysis apparatus and method |
| 07/07/2011 | WO2011080586A2 Formation sampling |
| 07/07/2011 | US20110162836 Elongated Probe for Downhole Tool |
| 07/06/2011 | CN201891412U Sampling valve for oil well |
| 07/06/2011 | CN201891382U Device for acquiring pressured parameters of drill bit during forward movement of drilling machine |
| 07/06/2011 | CN1900483B Apparatus and method to measure fluid resistivity |
| 07/06/2011 | CN102116150A Testing device for simulating influence law of sand on productivity of reservoir |
| 07/06/2011 | CN102116149A Round-table-barrel-shaped near-well-bore shear simulating device with three layers of compaction sand bodies |
| 07/06/2011 | CN102116148A Machine exploitation test pipe string for floating drilling rig |
| 07/06/2011 | CN101092874B Method for measuring formation properties with a time-limited formation test |
| 06/30/2011 | WO2011077271A1 Methods and apparatus for characterization of a petroleum reservoir employing compositional analysis of fluid samples and rock core extract |
| 06/30/2011 | WO2011076848A1 Determining a property of a formation material |
| 06/30/2011 | US20110161010 Testing additives for production enhancement treatments |
| 06/30/2011 | US20110155464 Method for the identification of the formation fluid invasion moment |
| 06/30/2011 | US20110155369 Method for optimizing reservoir production analysis |
| 06/30/2011 | US20110154895 Method for a formation properties determination |
| 06/30/2011 | CA2785067A1 Electric hydraulic interface for a modular downhole tool |
| 06/30/2011 | CA2784989A1 Determining a property of a formation material |
| 06/30/2011 | CA2726506A1 An apparatus for a borehole influx fluid parameters' measurement |
| 06/29/2011 | EP2339113A2 Gas lift method with fine lifting stream |
| 06/29/2011 | CN201883954U Coal-bed core-taking drilling rod |
| 06/29/2011 | CN201883726U Positive-voltage explosion-proof instrument room |
| 06/29/2011 | CN102108861A Underground layered gas-liquid two phase fluid pressure and temperature-retaining sampling device |
| 06/29/2011 | CN102108860A Visualized fracture network oil displacement model and manufacturing method thereof |
| 06/29/2011 | CN102108858A Ground simulation measuring device and method for formation pressure while drilling |
| 06/29/2011 | CN101182770B Capacitance-type sensor used for horizontal well moisture percentage measurement |
| 06/28/2011 | US7967067 Coiled tubing deployed single phase fluid sampling apparatus |
| 06/28/2011 | US7966876 Single phase fluid sampling apparatus and method for use of same |
| 06/28/2011 | US7966875 Methods and apparatus for measuring formation properties |
| 06/28/2011 | CA2644051C Methods and compositions relating to the reduction of volatile phosphorus from crude |
| 06/23/2011 | WO2011073855A1 Methods for allocating commingled oil production |
| 06/22/2011 | EP2334904A1 Method for testing an engineered geothermal system using one stimulated well |
| 06/22/2011 | EP2220487B1 System and method of analyzing fluids at a drilling location |
| 06/22/2011 | CN201874568U Rock power extractor |
| 06/22/2011 | CN201874567U Multi-sample experimental box for coal-layer and shale gas-content testing |
| 06/22/2011 | CN201874566U Special sample can for isothermal adsorption instrument |
| 06/22/2011 | CN201874565U Core permeability damage flow test device |
| 06/22/2011 | CN201874564U Liquid supply device for simulation of flow of oil reservoir |
| 06/22/2011 | CN201874552U Portable lifting-instrument bracket device |
| 06/22/2011 | CN201874548U Core successive elutriator and equipment comprising same |
| 06/22/2011 | CN201874521U Anti-theft box for sampling gate |
| 06/22/2011 | CN102102515A Coring selector with gear indication function for well wall |
| 06/22/2011 | CN102102514A Technology for determining coal bed intensity by using coal ash |
| 06/22/2011 | CN102102513A Through casting resistivity logging instrument |
| 06/22/2011 | CN102102510A Folding ultrasonic borehole imaging tool |
| 06/22/2011 | CN102102508A Wellhead assembling table for safety logging instrument |
| 06/22/2011 | CN101201002B Long-range single-cord well logging bus control system |
| 06/21/2011 | US7966273 Predicting formation fluid property through downhole fluid analysis using artificial neural network |
| 06/21/2011 | CA2653587C A system and method for estimating supercharge pressure and initial pressure of a formation |
| 06/16/2011 | WO2010050840A8 An integrated coring system |
| 06/16/2011 | US20110139509 Pressure and flow control in drilling operations |
| 06/16/2011 | US20110139450 Adjustable testing tool and method of use |
| 06/16/2011 | US20110139448 Formation fluid sampling |
| 06/16/2011 | US20110139442 Method of determining end member concentrations |
| 06/16/2011 | DE102008001439B4 Vorrichtung und Verfahren zur Durchführung einer azimutalen Prüfung von in Bohrlöchern eingebauten Ringraumabdichtungen auf vorhandene Hohlräume, Kanäle und Strömungen Apparatus and method for performing an azimuthal examination of built-in wells annulus seals on existing cavities, channels and currents |
| 06/15/2011 | CN201865666U Petroleum deposit sand-production simulating sand filling experimental facility |
| 06/15/2011 | CN201865659U Hydrogen sulphide early warning measuring equipment |
| 06/15/2011 | CN1624295B stratum measuring apparatus and stratum measuring method |
| 06/15/2011 | CN102096107A Method for evaluating permeability of reservoir layer according to interval transit time and density inversed pore flat degree |
| 06/15/2011 | CN102096096A Multi-stage oriented logging wave detector device |
| 06/15/2011 | CN102094645A Small-bore microspherically-focused logging instrument |
| 06/15/2011 | CN102094644A Method for evaluating TNIS sleeve-penetrating imaging reservoir fluid |
| 06/15/2011 | CN102094643A Di-gamma logging instrument |
| 06/15/2011 | CN102094642A Intraformationally heterogeneous model oil-water displacement efficiency evaluation system |
| 06/15/2011 | CN102094641A Fracturing filling sand prevention model |
| 06/15/2011 | CN102094640A Combined cylindrical barrel near-wellbore area shearing simulator with sand control compact sand body |
| 06/15/2011 | CN102094639A Method for correcting natural gamma ray spectral logging of barite mud well |
| 06/15/2011 | CN102094638A Winch panel system |
| 06/15/2011 | CN102094634A Method for correcting porosity of compensated neutrons |
| 06/15/2011 | CN102094628A LaBr3(Ce) crystal-based multi-channel gamma energy spectrum logging instrument |
| 06/15/2011 | CN102094625A Constant power dual laterolog equipment circuit and control method thereof |
| 06/15/2011 | CN102094624A Power supply circuit of main current for microsphere focused logging |
| 06/15/2011 | CN102094623A Voltage and current measuring circuit of micro-spherically focused logging instrument |
| 06/15/2011 | CN102094622A Thick film circuit of main micro-spherically focused logging current circuit |
| 06/15/2011 | CN102094621A Thick film circuit of voltage and current measuring circuit of micro-spherically focused logging instrument |
| 06/15/2011 | CN102094620A Multi-angle eccentric mechanism for petroleum logging |
| 06/15/2011 | CN102094610A Experiment simulation system for exploiting natural gas hydrate by using CO2 |
| 06/15/2011 | CN101324176B Spring self-switching type Y-shaped joint |
| 06/15/2011 | CN101285381B Process for inversing soft ground horizontal wave velocity by leaky mode waves |
| 06/15/2011 | CN101280682B Complete hydraulic self-drilling type side pressure equipment |
| 06/15/2011 | CN101250999B Terra-imitating borehole and manufacture method thereof |
| 06/14/2011 | US7958936 Downhole formation sampling |
| 06/09/2011 | US20110137618 Geotechnical horizontal directional drilling |
| 06/09/2011 | US20110132082 Measuring probe for oil and gas wells and/or casings |
| 06/08/2011 | EP2329104A1 Single packer system for fluid management in a wellbore |
| 06/08/2011 | CN201857963U Bubbling umbrella for logging for low-production liquid horizontal well |
| 06/08/2011 | CN201857962U Automatic rock debris sampling mechanical device for geological logging |
| 06/08/2011 | CN201857961U Imager provided with double-layer radial distributed array conducting probe sensor |
| 06/08/2011 | CN201857960U Device for directly measuring content of gas |
| 06/08/2011 | CN201857959U Ultraviolet reflection spectral oil-gas on-line detection and logging device |
| 06/08/2011 | CN201857954U Twelve-arm dual sidewall contact device used for micro-resistivity scanning, imaging and logging instrument |
| 06/08/2011 | CN102089497A Monitoring of reservoir fluid moving along flow pathways in a producing oil field using passive seismic emissions |
| 06/08/2011 | CN102086764A Supercritical fluid well drilling and completion simulation test device |
| 06/08/2011 | CN101295012B NMR measuring device for borehole |