| 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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| 10/09/2013 | EP2646650A1 Method for measuring pressure in an underground formation |
| 10/09/2013 | CN203232770U Receiving and transmitting sensor coil framework made of silicon nitride ceramic |
| 10/09/2013 | CN203232769U Receiving and transmitting coil framework made of silicon nitride ceramic |
| 10/09/2013 | CN203230849U Turntable sealing device of drilling rig |
| 10/09/2013 | CN203230417U On-line wellhead water content analysis device |
| 10/09/2013 | CN203230416U Small high-pressure-fluid-resistant resistivity sensor |
| 10/09/2013 | CN203230415U Subsection simultaneous sampling and water exploration pipe column of multi-section fracturing horizontal well |
| 10/09/2013 | CN103343687A Method for obtaining degree of mineralization of equivalent sodium chloride of sandstone brine layer through well logging materials |
| 10/09/2013 | CN103343686A Intelligent quantitative degasser |
| 10/08/2013 | US8550184 Formation coring apparatus and methods |
| 10/08/2013 | US8550160 Apparatus and methods for pulse testing a formation |
| 10/08/2013 | US8549906 Tubing expansion |
| 10/08/2013 | US8549905 Simulating downhole flow through a perforation |
| 10/08/2013 | CA2698618C Variable position gas trap |
| 10/08/2013 | CA2676270C Measuring properties of low permeability formations |
| 10/08/2013 | CA2455466C Nuclear magnetic resonance apparatus and methods for analyzing fluids extracted from earth formation |
| 10/03/2013 | WO2013148623A1 Dynamic to static elastic property transforms for tiv rock material |
| 10/03/2013 | WO2013148026A1 Igniter and method of making |
| 10/03/2013 | WO2013147790A1 Method and apparatus for formation testing and sampling when performing subterranean operations |
| 10/03/2013 | WO2013147616A1 Method and device for subsea sampling |
| 10/03/2013 | US20130255367 Apparatus, method and system for measuring formation pressure and mobility |
| 10/03/2013 | CA2811024A1 Logging tool for determination of formation density and methods of use |
| 10/02/2013 | CN203225150U 5a5b silicon chloride ceramic receiving and transmitting coil frame |
| 10/02/2013 | CN203225149U Silicon nitride ceramic receiving and emitting coil framework for oil field underground oil extraction device |
| 10/02/2013 | CN203225148U Receiving-emitting silicon nitride ceramic coil former used for undersea oil extraction equipment |
| 10/02/2013 | CN203225147U Silicon nitride ceramic receiving and transmitting coil former |
| 10/02/2013 | CN203223218U Underground fluid sampler test simulation device |
| 10/02/2013 | CN103339347A Method and arrangement to establish during down-the-hole drilling communication between the cavity of the drill string and the surrounding material |
| 10/02/2013 | CN103334895A High-pressure fluid pump of underground formation tester |
| 10/02/2013 | CN103334746A Probe of FDT (Formation Dynamic Test) module type formation tester |
| 10/02/2013 | CN103334745A Automatic debris collection and washing machine |
| 10/02/2013 | CN103334744A Cable formation tester |
| 10/02/2013 | CN103334743A Formation tester ground control system |
| 10/02/2013 | CN103334742A Water sample extraction device for oilfield well-to-well tracer technology |
| 10/02/2013 | CN103334736A Probing pipe capable of measuring while drilling |
| 10/02/2013 | CN103334726A Variable high-temperature high-pressure visual rock core model holding device |
| 10/02/2013 | CN101451434B Downhole imaging tool utilizing X-ray generator |
| 10/02/2013 | CN101358526B Downhole tool and method for unsticking tool shell from wellhole wall |
| 10/02/2013 | CA2773339A1 Casing integrity pressure test system |
| 10/01/2013 | US8544543 Consolidating spacer fluids and methods of use |
| 10/01/2013 | CA2713995C Method for evaluating subterranean formation fluid |
| 09/26/2013 | WO2013142869A1 Transporters of oil sensors for downhole hydrocarbon detection |
| 09/26/2013 | WO2013141748A1 Device for determining the component composition of a product from an oil and gas well |
| 09/26/2013 | WO2013140239A1 Drilling system failure risk analysis method |
| 09/26/2013 | WO2013022574A3 Methods for monitoring fluids within or produced from a subterranean formation during fracturing operations using opticoanalytical devices |
| 09/26/2013 | WO2013022570A3 Methods for monitoring fluids within or produced from a subterranean formation during acidizing operations using opticoanalytical devices |
| 09/26/2013 | WO2013022568A3 Methods for monitoring the formation and transport of a fracturing fluid using opticoanalytical devices |
| 09/26/2013 | WO2013022556A3 Methods for monitoring the formation and transport of a treatment fluid using opticoanalytical devices |
| 09/26/2013 | US20130248251 Mathematical Modeling of Shale Swelling in Water Based Muds |
| 09/26/2013 | US20130248173 Downhole Formation Tester Apparatus And Methods |
| 09/26/2013 | DE102012204496A1 Drilling device for producing well bore, has conduit emerged from rear end of drilling element, which comprises primary cable end arranged in drilling element and secondary cable end arranged outside the drilling element |
| 09/25/2013 | CN203214055U Three-dimensional simulation measuring device of oil reservoir remaining oil saturation |
| 09/25/2013 | CN203214054U Bypass-type tertiary oil recovery online sampling device |
| 09/25/2013 | CN203214053U Measuring device for measuring phase flow in downhole multiple phase flows |
| 09/25/2013 | CN203214052U Stratum crack simulation device |
| 09/25/2013 | CN203214043U Well drilling simulation device |
| 09/25/2013 | CN103328949A System and method for coupling an extendable element to an actuator |
| 09/25/2013 | CN103328768A Logging-while-drilling tool incorporating electronic radiation generator and method for using same |
| 09/25/2013 | CN103321637A Single rock fragment stress analysis experiment device and experiment method |
| 09/25/2013 | CN103321634A Method for calculating stratum pressure by aid of liquid level process |
| 09/25/2013 | CN103321631A Microspheric focusing polar plate and manufacturing method thereof |
| 09/25/2013 | CN101501298B Methods and devices for analyzing and controlling the propagation of waves in a borehole generated by water hammer |
| 09/24/2013 | CA2648257C Input deck migrator for simulators |
| 09/24/2013 | CA2583029C Method and system for production metering of oil wells |
| 09/24/2013 | CA2568593C Method and apparatus for performing chemical treatments of exposed geological formations |
| 09/24/2013 | CA2448172C Oil and gas well tubular inspection system using hall effect sensors |
| 09/19/2013 | WO2013138119A1 Pressure-corrected density of a fluid |
| 09/19/2013 | WO2013137861A1 Method and device for interfacing with subsea production equipment |
| 09/19/2013 | US20130245953 Wellbore real-time monitoring and analysis of fracture contribution |
| 09/19/2013 | US20130245952 System and method for characterizing a flow property of a production well site in a reservoir |
| 09/19/2013 | US20130239672 Apparatus for extracting, analyzing, and storing gas in drilled core on ship |
| 09/19/2013 | US20130239671 Pressure-corrected density of a fluid |
| 09/19/2013 | US20130239664 Fluid Density From Downhole Optical Measurements |
| 09/18/2013 | EP2639401A1 Wellbore real-time monitoring and analysis of fracture contribution |
| 09/18/2013 | CN203201550U Double-hydraulic-motive-power module |
| 09/18/2013 | CN203201549U Drill collar type gamma gauge |
| 09/18/2013 | CN203201544U Testing device for simulation detecting of position of water rich area of mine coal rock layer |
| 09/18/2013 | CN203201543U Gamma short section connecting protecting device |
| 09/18/2013 | CN103306672A Method for predicting abrasiveness of shaly stratum in different drilling directions |
| 09/18/2013 | CN103306671A Four-quadrant reservoir stratum type identification method and system |
| 09/18/2013 | CN103306670A Formation resistivity measuring instrument and using method thereof |
| 09/18/2013 | CN103306669A Multi-mode multi-depth resistivity measurement instrument and application method of multi-mode multi-depth resistivity measurement instrument |
| 09/18/2013 | CN103306665A Testing device for geological storage of carbon dioxide in coal seams |
| 09/18/2013 | CN103306663A Uranium ore logging method |
| 09/18/2013 | CN103306651A Multi-angle displacement CT scanning system based on top gas injection |
| 09/18/2013 | CN102359350B Centering device |
| 09/18/2013 | CN102220866B Pressure relief and consolidation synergizing prevention and control method for rock burst in deep coal drift |
| 09/18/2013 | CN102162358B Soundwave-while-drilling well logging device |
| 09/18/2013 | CN101975075B Method for determining coal mass gas content by advancing face gas emission parametric inversion |
| 09/18/2013 | CN101915094B Structuring method of continuous monitoring system of overburden rock displacement in ore bed mining process |
| 09/18/2013 | CN101443531B Method for determining filtration properties of rocks |
| 09/18/2013 | CN101255793B Impulse neutron complete spectrum saturability logging instrument variable parameter neutron pulse timing mode |
| 09/17/2013 | US8538701 Fluid conductivity measurement tool and methods |
| 09/17/2013 | US8538697 Core sample preparation, analysis, and virtual presentation |
| 09/17/2013 | US8534124 Sensor housing apparatus |
| 09/12/2013 | US20130233622 Sealed Core |
| 09/11/2013 | CN203189013U Hydraulic suction device |
| 09/11/2013 | CN203189012U Formation tester and supporting arm thereof |
| 09/11/2013 | CN203189009U Microballoon density borehole diameter combination sidewall contact device based on hydraulic principle and logger |
| 09/11/2013 | CN203188923U Manual-operated portable drill rod in water conservancy irrigation area |