| 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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| 01/17/2013 | US20130014576 High pressure and flow rate pump useful in formation fluid sample testing |
| 01/17/2013 | CA2841040A1 System and method for performing wellbore stimulation operations |
| 01/17/2013 | CA2839732A1 Estimating a wellbore parameter |
| 01/16/2013 | CN202673289U Visual simulation experiment device for fracture-cavity carbonate reservoir |
| 01/16/2013 | CN202673288U Novel six-arm sidewall contact device |
| 01/16/2013 | CN202673287U Miniature open hole well cable formation tester |
| 01/16/2013 | CN202673286U Novel water-flooded zone rock sample simulator |
| 01/16/2013 | CN202673285U Oiling device |
| 01/16/2013 | CN202673284U Spontaneous potential logging instrument |
| 01/16/2013 | CN202673283U Sidewall contact device |
| 01/16/2013 | CN202673272U Rotating sound wave probe |
| 01/16/2013 | CN202673267U Horizontal well underground physical simulation test device |
| 01/16/2013 | CN202673266U Experimental device for simulation of microwave heating of oil shale in real stratum situation |
| 01/16/2013 | CN202673238U Well mouth dual anti-theft sampler |
| 01/16/2013 | CN102877839A Acoustic transducer and logging device thereof |
| 01/16/2013 | CN102877834A Device and method for quickly testing bubble point pressure in well |
| 01/16/2013 | CN102877827A Acoustic system module of acoustic logging while drilling |
| 01/16/2013 | CN101975038B Device for sampling mud rock by cooling air and rock sample sampling method thereof |
| 01/16/2013 | CN101864952B Electronic coring and selecting transmitter |
| 01/15/2013 | US8353205 Measuring apparatus with AE sensor, installing method thereof, and set of the measuring apparatus |
| 01/10/2013 | WO2013004650A1 Sampling procedure for polymer-based solutions used in underground formations |
| 01/10/2013 | WO2012148688A3 A method of providing flow control devices for a production wellbore |
| 01/10/2013 | US20130008719 Coring Tools and Related Methods |
| 01/10/2013 | CA2835234A1 Sampling procedure for polymer-based solutions used in underground formations |
| 01/09/2013 | CN202661693U Arrangement structure of distributed optical fibers in freezing wall of shaft |
| 01/09/2013 | CN202659232U Coaxial array capacitance sensor for measuring low flow oil well moisture content |
| 01/09/2013 | CN202659231U Pressure maintaining device for underground sampling device |
| 01/09/2013 | CN102865071A Over-metal sleeve magnetosonic resistivity imaging logging method and device |
| 01/09/2013 | CN102865070A Positioned backup device |
| 01/09/2013 | CN102865069A Micro-column type focused logging instrument and micro-column type focused logging method thereof |
| 01/09/2013 | CN102865068A Probe |
| 01/09/2013 | CN102865067A Array coil system of azimuthal electromagnetic wave resistivity logging instrument while drilling |
| 01/09/2013 | CN102865064A Gas and water flow condition and effect simulation device of coal bed gas well discharging and mining process |
| 01/09/2013 | CN102865062A Physical analog device for electrical logging detector entity built by ultrafiltration |
| 01/09/2013 | CN102865060A Determining method of amount of shale oil deposit hydrofracture propping agent |
| 01/09/2013 | CN102865059A Method and device for predicting capacity of fissure-hole type oil deposit |
| 01/09/2013 | CN102080538B Neutron emission control method, device and short joint for while-drilling neutron porosity measurement |
| 01/09/2013 | CN101225739B Methods and apparatus to sample heavy oil in a subterranean formation |
| 01/09/2013 | CN101220743B 核磁共振模块 NMR module |
| 01/08/2013 | US8347963 Controlling transient underbalance in a wellbore |
| 01/08/2013 | US8347959 Method and system for increasing production of a reservoir |
| 01/08/2013 | CA2665929C Method and apparatus for geomodel uplayering |
| 01/08/2013 | CA2450598C Method and apparatus utilizing nmr measurements to gather information on a property of the earth formation surrounding a wellbore |
| 01/03/2013 | WO2013002803A1 Downhole sample module with an accessible captured volume adjacent a sample bottle |
| 01/03/2013 | WO2012101133A3 Apparatus for a fluid transport pipeline, related method and system |
| 01/03/2013 | WO2012001534A3 Sample carrier for single phase samplers |
| 01/03/2013 | US20130000989 Systems and methods of a collar bore for a sample bottle assembly |
| 01/03/2013 | CA2840355A1 Downhole sample module with an accessible captured volume adjacent a sample bottle |
| 01/02/2013 | EP2541284A1 System and method for generating fluid compensated downhole parameters |
| 01/02/2013 | CN202645551U Drilling fluid density wireless sensing device of petroleum engineering |
| 01/02/2013 | CN202645550U Flash-distillation preventing airtight sampling and metering device for high-temperature high-pressure saturated liquid |
| 01/02/2013 | CN202645549U Lateral log equipment with high resolution ratio |
| 01/02/2013 | CN202645548U High resolution bearing resistivity lateral logging instrument |
| 01/02/2013 | CN202645547U High-resolution azimuthal resistivity dual laterolog tool |
| 01/02/2013 | CN202645546U High-resolution dual laterolog tool |
| 01/02/2013 | CN202645536U Multipolar subarray sound wave sound insulator |
| 01/02/2013 | CN202645454U Straddle test caber perforation combination string |
| 01/02/2013 | CN102852517A Physical simulation method and device for formation temperature and pressure one-dimensional distribution |
| 01/02/2013 | CN102852516A Full-sew-length three-dimensional crushing data simulation method and device for oil and gas reservoir development |
| 01/02/2013 | CN102003177B Hydrogeological parameter observation instrument for underground single drill hole |
| 01/02/2013 | CN101761333B Multi-functional true triaxial stress cinder heart clamp holder |
| 01/02/2013 | CN101761328B Stratum geology interface instrument drilling induction recognition system |
| 12/27/2012 | WO2012178214A2 Pump drain arrangements for packer systems and methods for sampling underground formations using same |
| 12/27/2012 | WO2012175115A1 Computer-based method for real-time three-dimensional geological model calculation and reservoir navigation |
| 12/27/2012 | WO2012146970A3 Smart hydraulic pumping device for recovering oil and obtaining down-hole information |
| 12/27/2012 | WO2012129389A3 Measurement pretest drawdown methods and apparatus |
| 12/27/2012 | WO2012129214A3 Flow activated sensor assembly |
| 12/27/2012 | WO2012129098A3 Method for analyzing fluid properties |
| 12/27/2012 | WO2012125890A3 Controlled release biocides in oilfield applications |
| 12/27/2012 | WO2012122482A3 Electromagnetic viscosity sensor |
| 12/27/2012 | WO2012122377A3 Methods and devices for filling tanks with no backflow from the borehole exit |
| 12/27/2012 | WO2012118617A3 Dispersing separated hydrocarbon gas into separated oil during surface well testing for improved oil mobility |
| 12/27/2012 | WO2012096911A3 Scalable simulation of multiphase flow in a fractured subterranean reservoir as multiple interacting continua |
| 12/27/2012 | WO2012082481A3 Chemical scavenger for downhole chemical analysis |
| 12/27/2012 | US20120325559 Core capture and recovery from unconsolidated or friable formations and methods of use |
| 12/27/2012 | US20120325464 Early verification of a production well |
| 12/27/2012 | US20120325462 Method for Determining Spacing of Hydraulic Fractures in a Rock Formation |
| 12/27/2012 | CA2839712A1 Pump drain arrangements for packer systems and methods for sampling underground formations using same |
| 12/26/2012 | EP2537051A2 Apparatus and methods for providing information about one or more subterranean variables |
| 12/26/2012 | CN202633165U Elastic contact type low-oil-level detection switch for oil well logging apparatus |
| 12/26/2012 | CN202628088U 原油取样器 Crude Oil Sampler |
| 12/26/2012 | CN202628087U Shaft-mounted movable electrode plate of logger |
| 12/26/2012 | CN202628075U Visual multi-section combination sand filling tube for gas injection flooding experiment |
| 12/26/2012 | CN202628072U 5700 bridle assembly |
| 12/26/2012 | CN202628051U Physical simulation device for substitution of coal bed methane by carbon dioxide |
| 12/26/2012 | CN102839967A Multifunctional horizontal gas well simulation experiment device |
| 12/26/2012 | CN102839964A Coal and gas burst risk parameter drilling and predicting integrated method |
| 12/26/2012 | CN102220841B Submarine sampling drilling rig |
| 12/26/2012 | CN102080540B Spectrum fluid identification nipple of formation tester |
| 12/26/2012 | CN101832124B Dual laterolog equipment power transmitting control method |
| 12/26/2012 | CN101403300B Test method for arbitrary section of drill core |
| 12/26/2012 | CN101397907B Method and apparatus for eliminating directly coupling signal of induction logging tool |
| 12/26/2012 | CN101392645B Rapid phase discrimination and automatic transmission unit |
| 12/25/2012 | US8336622 Formation evaluation while drilling |
| 12/20/2012 | WO2012173797A2 Hydrocarbon detection in annulus of well |
| 12/20/2012 | WO2012173608A1 Systems and methods for measuring parameters of a formation |
| 12/20/2012 | WO2012141837A3 Apparatus and method for testing solids production in a wellbore |
| 12/20/2012 | WO2012123454A3 Mixing of a multiphase fluid |
| 12/20/2012 | WO2012116072A3 Multi-phase region analysis method and apparatus |
| 12/20/2012 | US20120318503 Carbon-based fluorescent tracers as oil reservoir nano-agents |