| 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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| 04/24/2013 | CN202900157U Oil field sampling cipher antitheft apparatus |
| 04/24/2013 | CN103069102A Small core generation and analysis at-bit as lwd tool |
| 04/24/2013 | CN103061751A Microballoon density hole diameter combination sidewall contact device based on hydraulic principle and logger |
| 04/24/2013 | CN103061729A Anaerobic simple core flooding simulation system simulating method |
| 04/24/2013 | CN102061912B Four-antenna cyclic transmitting control circuit |
| 04/24/2013 | CN101949289B Multi-medium coupling device for stratigraphic simulation experiment |
| 04/24/2013 | CN101892830B Deep ground stress measurement while drilling (MWD) system |
| 04/24/2013 | CN101876245B Shell of electromagnetic wave resistivity instrument |
| 04/24/2013 | CN101864953B Pushing device for extraction of formation fluid |
| 04/24/2013 | CN101845951B Method for quickly analyzing components of drilling liquid by using ultrasonic molecular beams |
| 04/24/2013 | CN101575971B Stratum tester |
| 04/24/2013 | CN101525996B Leapfrog neutron tube target voltage control method |
| 04/23/2013 | US8424377 Monitoring the water tables in multi-level ground water sampling systems |
| 04/23/2013 | CA2683673C Method and apparatus for remote characterization of faults in the vicinity of boreholes |
| 04/19/2013 | CA2792056A1 Sample chamber for laser ablation analysis of fluid inclusions and analyzing device thereof |
| 04/18/2013 | WO2013052996A1 Formation pressure sensing system |
| 04/18/2013 | US20130094325 Look-ahead seismic while drilling |
| 04/18/2013 | US20130092443 Formation Evaluation While Drilling |
| 04/18/2013 | US20130092442 Full closure core catcher |
| 04/18/2013 | US20130092372 Apparatus and methods of flow testing formation zones |
| 04/18/2013 | US20130091941 Determination of oil saturation in reservoir rock using paramagnetic nanoparticles and magnetic field |
| 04/18/2013 | CA2851874A1 Formation pressure sensing system |
| 04/17/2013 | CN202882908U Drilling water collector |
| 04/17/2013 | CN202882907U Polymer injection well mouth decompressing and sampling integrated device |
| 04/17/2013 | CN202882906U Cable annular space sampler |
| 04/17/2013 | CN202882905U Portable geological exploration sampling drill |
| 04/17/2013 | CN202882904U Deformation monitoring device for frozen walls of shafts |
| 04/17/2013 | CN202882903U Enhancement type compensation neutron logging instrument |
| 04/17/2013 | CN202882902U Enhanced digital sound wave logging instrument |
| 04/17/2013 | CN202882901U Experimental device for evaluating damage of rock core |
| 04/17/2013 | CN202882900U Coded lock capable of glowing and sounding |
| 04/17/2013 | CN202882894U Sealed probe pressure measuring device based on parallelogram backup arm mechanism |
| 04/17/2013 | CN202882884U Pumping unit simulation test table |
| 04/17/2013 | CN202882882U Enhancement type three-parameter logging instrument |
| 04/17/2013 | CN103046925A Binomial-based method and binomial-based system for acquiring absolute open-flow potential of condensate gas reservoir |
| 04/17/2013 | CN103046924A Exponential-based method and exponential-based system for acquiring absolute open-flow potential of condensate gas reservoir |
| 04/17/2013 | CN103046923A Method for fast recognizing low-resistivity oil and gas reservoirs through optimizing drilling mud |
| 04/17/2013 | CN103046920A Sealing insulating mechanism |
| 04/17/2013 | CN103046868A Integrated horizontal well geosteering method |
| 04/17/2013 | CN102151421B Float type quantitative degasser |
| 04/17/2013 | CN102128026B Formation pressure measuring device while drilling |
| 04/17/2013 | CN102022113B Test method for monitoring stresses of flow field and interlayer during cavity constructing period of oil depot |
| 04/17/2013 | CN101952704B Method of analyzing a number of hydrocarbons contained in a drilling fluid, and associated device |
| 04/17/2013 | CN101328804B Downhole tool having an extendable component and method for disengaging from well bore wall |
| 04/17/2013 | CN101144805B Drilling fluid high-temperature high pressure multifunctional dynamic evaluation tester |
| 04/16/2013 | US8418760 Sampling system and method |
| 04/11/2013 | WO2013052437A1 Applications based on fluid properties measured downhole |
| 04/11/2013 | WO2013050989A1 Testing while fracturing while drilling |
| 04/11/2013 | WO2013050746A1 A well fluid heat exchange system, a control assembly and method thereof |
| 04/11/2013 | WO2013022233A3 Compound sample extraction apparatus |
| 04/11/2013 | WO2013019523A3 Method and system for sampling multi-phase fluid at a production wellsite |
| 04/11/2013 | WO2012028848A3 Systems and methods for monitoring a parameter of a subterranean formation using swellable materials |
| 04/11/2013 | US20130087329 Method of tracing flow of hydrocarbon from a subterranean reservoir |
| 04/11/2013 | US20130087327 Using dielectric properties of an insulated conductor in a subsurface formation to assess properties of the insulated conductor |
| 04/11/2013 | CA2850231A1 Method and apparatus for using velocity profile measurements in recovering bitumen from a coarse tailings line |
| 04/10/2013 | EP2576981A1 Through the drill string or core bit dst system |
| 04/10/2013 | CN202866803U High-temperature thick-film integrated circuit for temperature measurement of resistivity log |
| 04/10/2013 | CN202866802U Medium-pressure water loss meter for monitoring petroleum well drilling in real time |
| 04/10/2013 | CN202866801U Gas-liquid-ratio regulation device for rock core displacement physical simulation experiment |
| 04/10/2013 | CN202866800U Horizontal well plugging simulation experiment device |
| 04/10/2013 | CN202866785U Circuit switching and mud flow guiding integrated device of measuring instrument while drilling |
| 04/10/2013 | CN202864770U Combustion arm vertical lifting system |
| 04/10/2013 | CN103032065A Simulation test device and test method for well completion of horizontal well |
| 04/10/2013 | CN101761311B Underwater geotechnical drilling equipment and underwater geotechnical exploration method |
| 04/10/2013 | CN101603424B Drilling non-destructive sampling method for deep-buried rock |
| 04/09/2013 | CA2665125C Apparatus and method for manipulating fluid during drilling or pumping operations |
| 04/09/2013 | CA2640125C Method of treating a subterranean formation using a rheology model for fluid optimization |
| 04/04/2013 | WO2013049158A2 Methods of evaluating rock properties while drilling using downhole acoustic sensors and a downhole broadband transmitting system |
| 04/04/2013 | WO2013049140A2 Apparatus, computer readable medium, and program code for evaluating rock properties while drilling using downhole acoustic sensors and a downhole broadband transmitting system |
| 04/04/2013 | WO2013049111A2 Apparatus, computer readable medium, and program code for evaluating rock properties while drilling using downhole acoustic sensors and telemetry system |
| 04/04/2013 | WO2013048386A1 Formation fluid sample container apparatus |
| 04/04/2013 | WO2013048291A1 Method for determining the acoustic characterisitics of a mud filter cake |
| 04/04/2013 | WO2013048290A1 Method for determining the acoustic characteristics of a mud filter cake |
| 04/04/2013 | US20130085675 Applications Based On Fluid Properties Measured Downhole |
| 04/04/2013 | US20130081878 Methods and Apparatus for Coring |
| 04/04/2013 | US20130081875 Umbilical technique for robotic mineral mole |
| 04/04/2013 | US20130081805 System and method for microseismic analysis |
| 04/04/2013 | US20130081803 Centralizing Mechanism Employable with a Downhole Tool |
| 04/04/2013 | CA2849314A1 Methods of evaluating rock properties while drilling using downhole acoustic sensors and a downhole broadband transmitting system |
| 04/04/2013 | CA2849310A1 Apparatus, computer readable medium, and program code for evaluating rock properties while drilling using downhole acoustic sensors and a downhole broadband transmitting system |
| 04/04/2013 | CA2849305A1 Apparatus, computer readable medium, and program code for evaluating rock properties while drilling using downhole acoustic sensors and telemetry system |
| 04/03/2013 | EP2574920A1 Real-Time Compositional Analysis of Hydrocarbon Based Fluid Samples |
| 04/03/2013 | EP2574722A1 A downhole sampling tool |
| 04/03/2013 | CN202856693U Power amplifying circuit of underground nuclear magnetic resonance logging instrument |
| 04/03/2013 | CN202850992U Pluggable optical spectrum fluid identification sensor |
| 04/03/2013 | CN202850991U Three-dimensional well pattern model for in-situ extraction of shale oil |
| 04/03/2013 | CN202850979U Measuring electrode for cased-hole resistivity logging instrument |
| 04/03/2013 | CN202850976U Gas and water flowing state and effect simulator in coalbed methane well discharging and mining process |
| 04/03/2013 | CN202850972U Descending boosting device of oil well test instrument |
| 04/03/2013 | CN103015998A In-situ sampling device applied to drilling process |
| 04/03/2013 | CN103015997A Filtration plugging testing apparatus and simulation method for process of fracture temporary plugging by ice crystals |
| 04/03/2013 | CN103015996A Method for predicting high steep structure stratum leakage velocity before drilling |
| 04/03/2013 | CN103015995A Method and device for measuring stratigraphic dip by resistivity device with tilt coil |
| 04/03/2013 | CN103015994A Pushing and jam-releasing short section of formation tester and device |
| 04/03/2013 | CN103015993A Water and gas disperse injection device for core gas-injection flooding experiment |
| 04/03/2013 | CN103015992A Lifting constant flow quantitative degasser |
| 04/03/2013 | CN103015988A Wireless data exchange formation test system and test method thereof |
| 04/03/2013 | CN103015985A Two-dimensional visual simulation device for inflow performances of horizontal well and vertical well |
| 04/03/2013 | CN103015978A Mine video scanning data acquiring system |
| 04/03/2013 | CN103015977A Panoramic video scanning device for jack shaft |