Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › 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
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)
10/2012
10/24/2012CN102748004A Method for determining hydrocarbon saturation of gas logging
10/24/2012CN101886540B Lateral multi-lens composite imaging video well-logging device
10/24/2012CN101446193B Device and method for detecting coal seam gas pressure and coal wall stress
10/23/2012US8294084 Methods, systems, and computer program products for measuring the density of material including a non-nuclear moisture property detector
10/23/2012US8292004 Downhole marking apparatus and methods
10/23/2012CA2691918C Method and apparatus for centrifugal separation
10/18/2012WO2012142441A2 Undisturbed core sampler
10/18/2012WO2012142259A2 Self-propelled simultaneous platform
10/18/2012WO2012141837A2 Apparatus and method for testing solids production in a wellbore
10/18/2012WO2012116204A3 Integrated reaming and measurement system and related methods of use
10/18/2012WO2012109063A3 Seismic-scale reservoir simulation of giant subsurface reservoirs using gpu-accelerated linear equation systems
10/18/2012US20120261192 Core Drill and Coring Method
10/18/2012CA2831077A1 Self-propelled simultaneous platform
10/17/2012CN202493267U Antiwear rolling-type detection device
10/17/2012CN202493266U In-situ soil sampler
10/17/2012CN202493265U Portable sampling drill
10/17/2012CN202493264U Probe shell driving structure of lithologic density logging instrument
10/17/2012CN202493263U Module-type dynamic simulation experimental device of multiphase flow in horizontal well
10/17/2012CN202493256U Managed pressure drilling data acquisition and monitoring device
10/17/2012CN202493255U Novel energy spectrum logger crystal installation structure
10/17/2012CN202493253U Portable adjustment device of comprehensive logging sensor
10/17/2012CN202493252U Current-collecting capacitive composite sensor of specific retention and flow rate
10/17/2012CN202493251U Umbrella-opening aiding device for horizontal well logging
10/17/2012CN102741504A System for analysing gas from strata being drilled under high mud flows
10/17/2012CN102734511A Core pushing control valve
10/17/2012CN102733801A Hot-pressing simulation experimental facility for whole process of rock formation, hydrocarbon generation and hydrocarbon discharge
10/17/2012CN102733800A Graduation system and method for lithologic density instrument
10/17/2012CN102141637B Method for continuously quantitative evaluation of pore structures of reservoir strata by utilizing nuclear magnetic resonance well logging data
10/17/2012CN102096096B Multi-stage oriented logging wave detector device
10/17/2012CN101581219B Device and method for measurement while drilling of ground stress
10/16/2012US8290711 Method of estimating the fracture density in a rock medium
10/16/2012US8286703 Apparatus and methods of flow testing formation zones
10/16/2012CA2594086C Methods and apparatus for the downhole characterization of formation fluids
10/11/2012US20120255781 Determining a property of a formation material
10/10/2012CN202486330U Well logging exploring pipe
10/10/2012CN202483567U Storage type geostress test device
10/10/2012CN202483566U High temperature small-hole well testing system
10/10/2012CN202483550U Multi-arm spring type roller centralizer
10/10/2012CN102720490A Measuring method and measuring apparatus of vertical well drilling fluid gas-oil information
10/10/2012CN102720489A Method for formation lithology analysis while drilling in gas drilling
10/10/2012CN102720488A Testing device and method for simulating flat carbonate rock reaction
10/10/2012CN102720487A System for acquiring gas reservoir formation pressure and method thereof
10/10/2012CN102720486A Device for testing shale gas fracture network diversion capacity and working method of device
10/10/2012CN102720485A Prediction method of water cut increasing rate of water field with medium-high water content
10/10/2012CN102720484A While-drilling acoustic well-logging apparatus and well-logging method
10/10/2012CN102720481A Oil-gas migration and accumulation physical simulation experiment apparatus
10/10/2012CN102720479A Physical simulation device for gas-cap reservoir
10/10/2012CN101793147B Online nuclear magnetic resonance type analysis and detection device of oil content of drilling fluid
10/10/2012CN101525993B Method for monitoring and controlling hydrogen sulfide in sulfur-containing stratum underbalanced drilling
10/10/2012CN101408102B Total hydrocarbon intelligent logging system
10/09/2012US8283174 Formation fluid sampling tools and methods utilizing chemical heating
10/04/2012WO2012129972A1 Electrode structure and apparatus for use in measuring oil-water constituents
10/04/2012WO2012097280A3 Rotational wellbore test valve
10/04/2012US20120253679 Measurement pretest drawdown methods and apparatus
10/04/2012CA2831645A1 Electrode structure and apparatus for use in measuring oil-water constituents
10/03/2012EP2504524A2 Probabilistic earth model for subterranean fracture simulation
10/03/2012CN202467834U Intelligent online measuring device of drilling fluid comprehensive parameter
10/03/2012CN202467833U Electrically controlled high-pressure physical property sampling system
10/03/2012CN202467832U Novel oil well sampler
10/03/2012CN202467823U Automatic-reducing guide mounting device for ground stress hollow inclusion
10/03/2012CN202467813U Measuring electrode pushing mechanism for through casing resistivity logging instrument
10/03/2012CN202460203U Degassing device
10/03/2012CN102713143A Pump-in seal
10/03/2012CN102713142A Reservoir architecture and connectivity analysis
10/03/2012CN102713141A Electric hydraulic interface for modular downhole tool
10/03/2012CN102704926A Manufacture method for hypotonic and ultra-hypotonic three-dimensional sand-packing model
10/03/2012CN102704925A Interwell electromagnetic logging system
10/03/2012CN102704924A Effective dry layer determining method and device
10/03/2012CN102704923A Underground physical simulation test device for horizontal well
10/03/2012CN102704922A Supercritical carbon dioxide carrying sand flow mechanism researching experiment device
10/03/2012CN102704921A Measuring device for electrical resistivity of electromagnetic waves while drilling and measuring method thereof
10/03/2012CN102704911A Multilateral well experimental model, system and sand filling method
10/03/2012CN102704901A Apparatus and method for multipoint pressure measuring long-core deep profile control experiment
10/03/2012CN101915088B Method and device for generating oil migration path
10/03/2012CN101793145B Method for determining calcareous interbed and formation porosity by neutron lifetime and compensated neutron combination logging
10/03/2012CN101482015B Root-soil drill integrated sampling instrument
10/02/2012US8276688 Downhole casing cutting tool
10/02/2012US8276662 Systems and methods to filter and collect downhole fluid
10/02/2012US8276657 Well fluid sampling system for use in heavy oil environments
10/02/2012CA2667365C Apparatus and methods for estimating a characteristic of a fluid downhole using thermal properties of the fluid
10/02/2012CA2635384C Downhole tool having an extendable component with a pivoting element
10/02/2012CA2499638C Borehole conductivity profiler
09/2012
09/27/2012WO2012129389A2 Measurement pretest drawdown methods and apparatus
09/27/2012WO2012129214A2 Flow activated sensor assembly
09/27/2012WO2012129098A2 Method for analyzing fluid properties
09/27/2012WO2012128921A2 Measuring gas losses at a rig surface circulation system
09/27/2012US20120241149 Method for measuring rock wettability
09/27/2012CA2830789A1 Measurement pretest drawdown methods and apparatus
09/27/2012CA2830201A1 Measuring gas losses at a rig surface circulation system
09/26/2012EP2501899A1 System for analysing gas from strata being drilled under high mud flows
09/26/2012CN202451149U Gas sampling device for oil-gas well
09/26/2012CN202451148U Downhole formation fluid analyzer
09/26/2012CN202451147U Integrated electric degasser
09/26/2012CN202451142U Subsurface environment simulator
09/26/2012CN202451131U Self-positioning orientation gamma measuring system
09/26/2012CN102692655A Crack indicator and application method thereof
09/26/2012CN102691498A Instrument for measuring electrical parameters of mud-while-drilling in horizontal well
09/26/2012CN102691497A Method for predicting drillable level value of rock under different well bottom differential pressures
09/26/2012CN102691496A Safety control method for well logging system
09/26/2012CN101787867B Drilling mud forced cooling and circulating system
1 ... 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 ... 119