| 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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| 01/12/2011 | CN201705321U Electric heating oil shale in-situ exploitation analog meter |
| 01/12/2011 | CN201705281U Cable through universal packer |
| 01/12/2011 | CN101942997A Cementing wall packer channeling checking instrument |
| 01/12/2011 | CN101942996A Underground corroding and sampling device and method |
| 01/12/2011 | CN101942995A Method for evaluating watered-out degree of ultralow-permeability water-drive reservoir sandstone oil layer |
| 01/12/2011 | CN101942994A Water-flooded layer water productivity quantitative forecasting method and system thereof |
| 01/12/2011 | CN101942993A Inter-well potential tomography imaging system and method while drilling |
| 01/12/2011 | CN101942992A Method for predicting pore pressure of regional high-pressure saltwater layer by utilizing curvature of face of geologic structure |
| 01/12/2011 | CN101942991A Method for modeling predictable physical model for fractured anisotropic oil reservoir water flooding development |
| 01/12/2011 | CN101942987A Simple sonic logger detection, calibration and ruling method |
| 01/12/2011 | CN101354362B Method for analyzing x-ray fluorescence shale content in petroleum well drilling |
| 01/11/2011 | CA2374089C Method for detecting and controlling the formation of hydrates at any point in a line in which polyphasic petroleum fluids circulate |
| 01/11/2011 | CA2242978C Method and apparatus for determining formation pressure |
| 01/09/2011 | CA2709369A1 Planning and performing drilling operations |
| 01/06/2011 | WO2010101980A3 Method of detecting gas in a formation using capture cross-section from a pulsed neutron device |
| 01/06/2011 | WO2009014932A3 Apparatus and methods to perform operations in a wellbore using downhole tools having movable sections |
| 01/06/2011 | WO2007019472A8 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 01/05/2011 | EP1991757B1 System for injecting a substance into the space surrounding a well tubular |
| 01/05/2011 | CN201696040U Spot sampling device |
| 01/05/2011 | CN201696039U Automatic filling device for long-pipe sand filling model |
| 01/05/2011 | CN201696038U Intelligent keyless electronic locking system |
| 01/05/2011 | CN201696023U Novel leaf spring-fixing structure |
| 01/05/2011 | CN101936929A X-ray fluorescent element analysis device and mud logging unit thereof |
| 01/05/2011 | CN101936159A Method for recognizing lithological characters while drilling |
| 01/05/2011 | CN101936158A Test method for wellbore multiphase flow under supercritical condition |
| 01/05/2011 | CN101936157A Method for detecting pore pressure of high pressure saltwater layer by using log information |
| 01/04/2011 | US7861801 Method to detect coring point from resistivity measurements |
| 01/04/2011 | CA2433211C Determining dew precipitation and onset pressure in oilfield retrograde condensate |
| 01/04/2011 | CA2424514C Method and apparatus for measuring mud and formation properties downhole |
| 01/04/2011 | CA2410967C Downhole measurement apparatus and technique |
| 12/30/2010 | US20100326727 Formation evaluation while drilling |
| 12/30/2010 | US20100326661 Well jet device and the operation method thereof |
| 12/29/2010 | WO2010151661A2 Sampling skid for subsea wells |
| 12/29/2010 | WO2010148435A1 A system for rapid logging of rock core sample data |
| 12/29/2010 | WO2010116250A3 Downhole sensor systems and methods thereof |
| 12/29/2010 | EP2267272A2 Single phase fluid sampling apparatus and method for use of same |
| 12/29/2010 | EP2267271A2 Single phase fluid sampling apparatus and method for use of same |
| 12/29/2010 | EP2267270A2 Single phase fluid sampling apparatus and method for use of same |
| 12/29/2010 | EP2004955B1 Improved probe for pressure meter |
| 12/29/2010 | CN201689183U Electrode used for measuring formation resistivity |
| 12/29/2010 | CN201687470U Dynamic filtration instrument of fracture acidizing working solution |
| 12/29/2010 | CN201687469U Multifunctional underground electromagnetic flaw detector |
| 12/29/2010 | CN201687468U Through casting resistivity logging instrument |
| 12/29/2010 | CN201687467U Sector sound-wave variable density logging instrument |
| 12/29/2010 | CN101929335A Focused sampling of formation fluids |
| 12/29/2010 | CN101929333A Drill-o-graph |
| 12/29/2010 | CN101769151B Resistivity data collecting and processing method based on oil-water front |
| 12/28/2010 | US7860654 Simulation method and apparatus for determining subsidence in a reservoir |
| 12/28/2010 | US7857049 System and method for operational management of a guarded probe for formation fluid sampling |
| 12/28/2010 | US7857048 Method for breaking fracturing fluids |
| 12/28/2010 | US7856872 Single phase fluid sampling apparatus and method for use of same |
| 12/23/2010 | WO2010144945A1 Remote installation of seabed instrument package |
| 12/23/2010 | US20100324868 Core Sample Preparation, Analysis, And Virtual Presentation |
| 12/23/2010 | US20100319935 Method and device for a running tool |
| 12/23/2010 | US20100319912 Focused sampling of formation fluids |
| 12/22/2010 | EP2263107A2 Method for characterizing a geological formation traversed by a borehole |
| 12/22/2010 | CN201679498U Cooling sealing sampling device used for heavy oil well production stream |
| 12/22/2010 | CN201679497U Ice blocking type pressure-maintaining and heat-preservation sampler |
| 12/22/2010 | CN201679492U Quick connector for logging tool |
| 12/22/2010 | CN201679458U Horizontal well sucker rod testing guiding protector |
| 12/22/2010 | CN1789656B Marking system and method |
| 12/22/2010 | CN101923173A Scintillator and detector assembly |
| 12/22/2010 | CN101922289A Temperature compensation structure of optical fiber detector for high-temperature oil well |
| 12/16/2010 | WO2010144546A2 Method of determining parameters of a layered reservoir |
| 12/16/2010 | WO2010142328A1 Tracer simulation tool and method for simulating tracers in sub-surface reservoirs. |
| 12/16/2010 | WO2009129289A4 Formation treatment evaluation |
| 12/16/2010 | WO2009086279A3 Acoustic measurements with downhole sampling and testing tools |
| 12/16/2010 | WO2009023698A3 Downhole gas detection in drilling muds |
| 12/16/2010 | US20100314105 Injection-backflow technique for measuring fracture surface area adjacent to a wellbore |
| 12/16/2010 | US20100314104 Method of using pressure signatures to predict injection well anomalies |
| 12/15/2010 | EP2260177A2 Monitoring of reservoir fluid moving along flow pathways in a producing oil field using passive seismic emissions |
| 12/15/2010 | CN201671627U Oil extraction three-dimensional simulation test formation temperature simulation device filled with polynary hot fluid |
| 12/15/2010 | CN201671626U Three-dimensional simulation test strata pressure simulator for extracting oil by injecting multielement thermal fluid |
| 12/15/2010 | CN201671625U Inductive probe with inductive coil array structure |
| 12/15/2010 | CN201671620U Down-hole monitoring device |
| 12/15/2010 | CN201671605U Injection-production simulator for depleted oil-gas reservoir and aquifer gas storage |
| 12/15/2010 | CN101915094A Continuous monitoring system of overburden rock displacement in ore bed mining process and structuring method thereof |
| 12/15/2010 | CN101915093A Time sequence design method for collecting double pulse neutron gamma spectrums |
| 12/15/2010 | CN101915092A Air-water mixer for pumping tests by air compressor |
| 12/15/2010 | CN101915091A Logging frequency matching thin-layer correction method and equipment |
| 12/15/2010 | CN101915088A Method and device for generating oil migration path |
| 12/14/2010 | US7849736 Method for calculating the ratio of relative permeabilities of formation fluids and wettability of a formation downhole, and a formation testing tool to implement the same |
| 12/09/2010 | WO2010141576A1 Apparatus and method for increasing the amount of dynamic underbalance in a wellbore |
| 12/09/2010 | WO2010101712A3 Method and system for calculating extent of a formation treatment material in a formation |
| 12/09/2010 | US20100307746 Methods of cleaning wellbores and analyzing wellbore fluids |
| 12/08/2010 | CN1696702B Fluids chain-of-custody |
| 12/08/2010 | CN101907725A Crack prediction method and device |
| 12/08/2010 | CN101906966A Method and device for forecasting reservoir yield |
| 12/08/2010 | CN101906965A Technology for identifying and analyzing stratums in VR (Virtual Reality) geological environment |
| 12/08/2010 | CN101906963A Method for determining saturation by using C/O and formation macro capture cross-section intersecting technique |
| 12/08/2010 | CN101906959A One-way cooling device of down-hole drilling tester |
| 12/08/2010 | CN101608545B Method and device for testing gas migration process in coal rock body |
| 12/08/2010 | CN101476458B Oil pool development simulation system, oil pool model body and its data processing method |
| 12/07/2010 | US7845410 Openhole perforating |
| 12/07/2010 | US7845405 Formation evaluation while drilling |
| 12/07/2010 | US7845404 Optical sensing system for wellhead equipment |
| 12/07/2010 | US7845219 Method and apparatus for sampling formation fluids |
| 12/07/2010 | CA2594925C Pump control for formation testing |
| 12/02/2010 | WO2010093774A3 Wellbore fluid testing apparatus and methods |
| 12/02/2010 | US20100305866 Estimating fluid flow in a reservoir |