| 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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| 04/21/2005 | US20050082468 Drilling Cutting Analyzer System and methods of applications. |
| 04/21/2005 | US20050082091 Clean-mole™ real-time control system and method for detection and removal of underground minerals, salts, inorganic and organic chemicals utilizing an underground boring machine |
| 04/21/2005 | US20050082059 Downhole sampling apparatus and method for using same |
| 04/21/2005 | US20050081654 Lysimeter apparatus |
| 04/20/2005 | EP1356189A4 Method to evaluate the hydrocarbon potential of sedimentary basins from fluid inclusions |
| 04/14/2005 | WO2005033739A2 Characterizing connectivity in reservoir models using paths of least resistance |
| 04/14/2005 | US20050077086 Multiple zone testing system |
| 04/14/2005 | CA2539249A1 Apparatus and method for fluid flow measurement with sensor shielding |
| 04/13/2005 | EP1461821A4 Method for measuring adsorbed and interstitial fluids |
| 04/13/2005 | CN2692349Y Large pore diameter testing instrument |
| 04/13/2005 | CN2692348Y New style transposition mechanism |
| 04/12/2005 | US6877965 Mechanical bladder pump |
| 04/12/2005 | US6877559 Retrieving a sample of formation fluid in as cased hole |
| 04/12/2005 | US6877332 Downhole sorption cooling and heating in wireline logging and monitoring while drilling |
| 04/12/2005 | CA2164442C Apparatus for use in a wellbore |
| 04/07/2005 | US20050075853 Methods for determining characteristics of earth formations |
| 04/07/2005 | US20050072565 MWD formation tester |
| 04/05/2005 | US6876959 Method and apparatus for hydraulic fractioning analysis and design |
| 04/05/2005 | US6874579 Creating an underbalance condition in a wellbore |
| 04/05/2005 | CA2385376C Drawdown apparatus and method for in-situ analysis of formation fluids |
| 04/05/2005 | CA2251870C Method and apparatus for measuring volumetric water flow rates in highly inclined wellbores |
| 03/31/2005 | DE102004043151A1 Verfahren und Vorrichtung zum Bestimmen der Geschwindigkeit und von Eigenschaften von strömenden Fluiden unter Verwendung von magnetischen Kernresonanzmessungen Method and apparatus for determining the velocity and of properties of flowing fluids using nuclear magnetic resonance measurements |
| 03/30/2005 | EP1518038A1 System for detecting gas in a wellbore during drilling |
| 03/30/2005 | CN2689207Y Long-rang pore water pressure measuring apparatus under dynamic loading action |
| 03/30/2005 | CN1601304A Ground stress multifrequency reverse demonstration method of dipole trans verse wave well logging |
| 03/30/2005 | CN1601303A Selection method of sound source frequency in dipole transverse wave well logging of bushing well |
| 03/29/2005 | US6871713 Apparatus and methods for sampling and testing a formation fluid |
| 03/29/2005 | US6871532 Method and apparatus for pore pressure monitoring |
| 03/29/2005 | CA2356576C An improved coring bit motor and method for obtaining a material core sample |
| 03/24/2005 | WO2004104560A3 Formation-based interpretation of nmr data for carbonate reservoirs |
| 03/24/2005 | US20050065759 Lumping and delumping method for describing hydrocarbon-containing fluids |
| 03/24/2005 | US20050061506 Well Treatment System and Method |
| 03/23/2005 | EP1228290A4 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 03/22/2005 | US6871118 Continuous detection, at any point of a pipe carrying a multiphase mixture of petroleum fluids, of thermodynamic hydrate formation conditions using a mechanistic hydrodynamic module and an integrated compositional module |
| 03/22/2005 | CA2229800C Apparatus and method for performing imaging and downhole operations at work site in wellbores |
| 03/19/2005 | CA2654524A1 Improving reservoir communication by creating a local underbalance and using treatment fluid |
| 03/17/2005 | WO2004034089A3 Borehole conductivity profiler |
| 03/16/2005 | EP1514009A1 Mwd formation tester |
| 03/16/2005 | EP1226336A4 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 03/16/2005 | CN1594831A Sampling detection method for underground state of oilfield oil displacement chemical agent |
| 03/15/2005 | US6865933 Multi-level monitoring well |
| 03/15/2005 | CA2190898C Method and apparatus for installing electronic equipment below soft earth surface layer |
| 03/10/2005 | WO2004106942A3 Method for measuring fluid chemistry in drilling and production operations |
| 03/10/2005 | WO2004081334A3 Formation testing and sampling apparatus and methods |
| 03/10/2005 | US20050055293 Methods and systems for offering and servicing financial instruments |
| 03/10/2005 | US20050053473 Well jet device for testing and studying formations and the operating method thereof |
| 03/10/2005 | US20050051718 Neutron measurement method for determining porosity of a formation surrounding a borehole |
| 03/10/2005 | US20050051329 Method and apparatus for gas displacement well systems |
| 03/09/2005 | EP1512152A1 Method and apparatus for mwd formation testing |
| 03/09/2005 | EP1511917A1 Method and apparatus for a high resolution downhole spectrometer |
| 03/09/2005 | EP1511914A2 Equalizer valve and method of use |
| 03/09/2005 | CN1591042A Method and apparatus for testing fluid speed and characters using NMR |
| 03/08/2005 | US6864801 Reservoir monitoring through windowed casing joint |
| 03/08/2005 | US6863137 Well system |
| 03/08/2005 | US6863136 Smart-ultrasonic/sonic driller/corer |
| 03/03/2005 | DE102004035783A1 Bohrlochwerkzeug und Verfahren zum Verringern von Schutt in einer Perforation in einem Bohrloch The downhole tool and method for reducing debris in a perforation in a wellbore |
| 03/02/2005 | EP1509758A1 Apparatus and method for analyzing well fluid sag |
| 03/02/2005 | EP1509669A2 Method for regression analysis of formation parameters |
| 03/02/2005 | CN2682206Y Borehole geophone string |
| 03/02/2005 | CN2682205Y Borehole geophone string pushing device |
| 03/02/2005 | CN1191422C Stratum-fluid sampling apparatus and method thereof |
| 03/01/2005 | US6860147 Process for predicting porosity and permeability of a coal bed |
| 02/24/2005 | WO2005017514A1 System and method for sensing using diamond based microelectrodes |
| 02/24/2005 | WO2005017316A1 A method and apparatus for a downhole fluorescence spectrometer |
| 02/24/2005 | US20050039909 Groundwater well sample device |
| 02/24/2005 | US20050039527 Determining the pressure of formation fluid in earth formations surrounding a borehole |
| 02/23/2005 | CN2680856Y Bi-electrode induced polarization potential logging tool |
| 02/23/2005 | CN2680855Y Frequency domain complex resistivity logging tool |
| 02/22/2005 | CA2167491C Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing |
| 02/17/2005 | WO2004097175A3 Device for analysing at least one gas contained in a liquid, particularly bore fluid |
| 02/16/2005 | EP1506388A1 Method for evaluating capillary pressure curve of an underground deposit rocks based on rock cuttings measurements |
| 02/16/2005 | EP1506344A1 Method for determining by strata reserve quality of an oil well |
| 02/16/2005 | CN2679364Y Electronic high pressure substance sampler for downhole |
| 02/16/2005 | CN2679363Y Tooth contacting soil sampling drum |
| 02/16/2005 | CN1580488A Retrievable subsurface nuclear logging system |
| 02/15/2005 | US6854537 Portable placer exploration and sampling apparatus |
| 02/10/2005 | WO2004099564A3 A method and apparatus for a downhole micro-sampler |
| 02/10/2005 | US20050030034 Method for determining properties of formation fluids |
| 02/10/2005 | US20050029125 System and method for sensing using diamond based microelectrodes |
| 02/10/2005 | US20050028974 Apparatus for obtaining high quality formation fluid samples |
| 02/10/2005 | US20050028973 Pressure controlled fluid sampling apparatus and method |
| 02/10/2005 | CA2783273A1 Geosteering detectors for boring-type continuous miners |
| 02/09/2005 | EP1389298A4 Determining optimal well locations from a 3d reservoir model |
| 02/09/2005 | CN1576514A Downhole sampling apparatus and method |
| 02/08/2005 | CA2314061C Reservoir management system and method |
| 02/04/2005 | CA2476532A1 Apparatus for obtaining high quality formation fluid samples |
| 02/03/2005 | WO2005010362A2 Improved method and apparatus for gas displacement well systems |
| 02/02/2005 | EP1502005A1 Method and apparatus for determining drill string movement mode |
| 02/02/2005 | EP1502004A1 System and method for interpreting drilling data |
| 02/02/2005 | EP1502003A2 Method for improving drilling depth measurements |
| 02/02/2005 | CN2675862Y Constant efficiency degassing device |
| 02/02/2005 | CN1573317A Optical fluid analysis signal refinement |
| 02/02/2005 | CN1573011A Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore |
| 01/27/2005 | US20050016727 [downhole sampling apparatus and method] |
| 01/27/2005 | US20050016302 Traction apparatus |
| 01/27/2005 | US20050016295 Method for determining the power of a test specimen and power test bench for the test specimen |
| 01/25/2005 | US6845677 Device for taking samples from a material of granular or powdery composition |
| 01/25/2005 | US6845657 Apparatus for sampling drill hole cuttings |
| 01/25/2005 | CA2133297C Method for evaluating the damage of the rock structure surrounding a well |
| 01/20/2005 | WO2004092633A3 Spoolable composite coiled tubing connector |