| 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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| 09/02/2008 | CA2503816C Formation imaging while drilling in non-conductive fluids |
| 08/28/2008 | US20080202811 Drilling Cutting Analyzer System and Methods of Applications |
| 08/28/2008 | US20080202748 Tubingless Electrical Submersible Pump Installation |
| 08/27/2008 | EP1960633A1 Improvements in and relating to hydrocarbon recovery from a hydrocarbon reservoir |
| 08/27/2008 | CN201107310Y Rotating feeler inspection cart |
| 08/27/2008 | CN201107208Y Cable rotary type hydrated compound probe boring sampling apparatus |
| 08/27/2008 | CN201107207Y Non-jam type deep sea hydrated compound probe boring sampling apparatus |
| 08/27/2008 | CN201106450Y Device for sampling anti-theft oil |
| 08/27/2008 | CN201106449Y Prospecting spade for artificial matter |
| 08/27/2008 | CN201106445Y Reducing tow device for casing horizontal well logging dragging device |
| 08/27/2008 | CN101253309A Rotary coring device and method for acquiring a sidewall core from an earth formation |
| 08/27/2008 | CN101251010A Single phase fluid sampling apparatus and method for use of same |
| 08/27/2008 | CN101251007A Inserting-mounting type electrohydraulic integration device |
| 08/27/2008 | CN101250999A Terra-imitating borehole and manufacture method thereof |
| 08/27/2008 | CN101250987A Method for testing and dislodging oil well intelligent delamination |
| 08/26/2008 | US7416023 Formation pressure testing apparatus with flexible member and method of formation pressure testing |
| 08/21/2008 | WO2008100964A1 Apparatus and methods of flow testing formation zones |
| 08/21/2008 | WO2008100156A1 Assembly and method for transient and continuous testing of an open portion of a well bore |
| 08/21/2008 | WO2008099249A2 Method and system for determining dynamic permeability of gas hydrate saturated formations |
| 08/21/2008 | WO2008098359A1 Method and apparatus for obtaining heavy oil samples from a reservoir sample |
| 08/21/2008 | US20080196942 Wellbore monitor |
| 08/21/2008 | CA2677603A1 Assembly and method for transient and continuous testing of an open portion of a well bore |
| 08/21/2008 | CA2677478A1 Apparatus and methods of flow testing formation zones |
| 08/21/2008 | CA2676673A1 Method and apparatus for obtaining heavy oil samples from a reservoir sample |
| 08/20/2008 | CN201103393Y Anti-theft sampling device |
| 08/20/2008 | CN101245702A Constant-power dual side-direction well measuring equipment |
| 08/20/2008 | CN101245701A Down-hole guiding height viewer and its observation method |
| 08/19/2008 | CA2488144C Method for determining sonde error for an induction or propagation tool with transverse or triaxial arrays |
| 08/14/2008 | WO2008098035A1 Downhole rock scratcher and method for identifying strength of subsurface intervals |
| 08/14/2008 | WO2007098221B1 A method and apparatus for ion-selective discriminaion of fluids downhole |
| 08/14/2008 | US20080190664 Soil testing apparatus |
| 08/14/2008 | US20080190190 Method and computer program product for drilling mud design optimization to maintain time-dependent stability of argillaceous formations |
| 08/13/2008 | EP1956185A2 Single phase fluid sampling apparatus and method for use of same |
| 08/13/2008 | CN201100127Y Well-mouth theft-prevention sampler |
| 08/13/2008 | CN101240707A Geological borehole wall rock strain measurement device |
| 08/13/2008 | CN101240706A Annular space logging process of neutron gamma-ray logging instrument for well gadolinium-injecting labelling |
| 08/13/2008 | CN100410681C Nuclear magnetic resonance measuring device for wellbore |
| 08/13/2008 | CN100410489C Method and device for measuring resistivity by device near bit |
| 08/12/2008 | US7410011 Method to determine the concentration of deuterium oxide in a subterranean formation |
| 08/12/2008 | CA2467671C Methods to detect formation pressure |
| 08/12/2008 | CA2337803C Method of determining in-situ stresses in an earth formation |
| 08/07/2008 | WO2008094050A2 Measurements of rock parameters |
| 08/06/2008 | CN201096769Y Multi-function sand prevention testing device |
| 08/06/2008 | CN201096768Y An oil-hiding big hole simulation visual model testing device |
| 08/06/2008 | CN201095983Y High-temperature high pressure sampler for SAGD oil extraction technology |
| 08/06/2008 | CN101236664A Method and system to display well properties information |
| 08/06/2008 | CN101236141A Underground gas collection spiral drill |
| 08/06/2008 | CN101235716A Prealarming method and method for avoiding oil gas well drilling neighbouring wellbore collision |
| 08/06/2008 | CN101235715A Logging method for recognizing hydrocarbon reservoir in air medium and instrument |
| 08/06/2008 | CN100408806C Method and apparatus for determining an optimal pumping rate based on a downhole dew point pressure determination |
| 08/05/2008 | US7408645 Method and apparatus for a downhole spectrometer based on tunable optical filters |
| 08/05/2008 | US7407566 System and method for sensing using diamond based microelectrodes |
| 07/31/2008 | WO2008091423A1 Borehole tester apparatus and methods using dual flow lines |
| 07/31/2008 | WO2008091155A1 An apparatus for use when gathering parameters from a well flow and also a method of using same |
| 07/31/2008 | WO2007098370A3 Kerogen extraction from subterranean oil shale resources |
| 07/31/2008 | US20080183451 Simulations for Hydraulic Fracturing Treatments and Methods of Fracturing Naturally Fractured Formation |
| 07/31/2008 | US20080178668 Method and apparatus for evaluating elastic mechanical properties of a transversely isotropic formation |
| 07/31/2008 | DE112006002135T5 Verfahren und Systeme zum Konstruieren und/oder Auswählen von Bohrausrüstung basierend auf Bohrlochbohrsimulationen Methods and systems for designing and / or selecting of drilling equipment based on Bohrlochbohrsimulationen |
| 07/30/2008 | EP1948904A1 Methods and systems for determining reservoir properties of subterranean formations |
| 07/30/2008 | EP1794413A4 Apparatus and method for wireline imaging in nonconductive muds |
| 07/30/2008 | CN201092853Y Well head built-in oil-water rate detecting instrument |
| 07/30/2008 | CN101230780A Methods and apparatus to characterize stock-tank oil during fluid composition analysis |
| 07/29/2008 | US7404456 Apparatus and method of identifying rock properties while drilling |
| 07/29/2008 | CA2293686C Control and monitoring system for chemical treatment of an oilfield well |
| 07/24/2008 | WO2008087156A1 System and method for analysis of well fluid samples |
| 07/24/2008 | US20080173445 Methods and Apparatus to Characterize Stock-Tank Oil During Fluid Composition Analysis |
| 07/24/2008 | US20080173083 Borehole tester apparatus and methods using dual flow lines |
| 07/23/2008 | CN201090212Y Sleeve well cable pump-exhausting type formation sampler |
| 07/23/2008 | CN201090211Y All-pass pathway sampling sampling tester |
| 07/23/2008 | CN201090210Y Automatic sampling device for gas drilling detritus |
| 07/23/2008 | CN201090209Y Hoisting type rotary control head |
| 07/23/2008 | CN201090206Y Logging instrument for testing oil of gas well |
| 07/23/2008 | CN101225739A Methods and apparatus to sample heavy oil in a subterranean formation |
| 07/22/2008 | US7403857 Enhanced measurement of azimuthal dependence of subterranean parameters with filters and/or discretely sampled data |
| 07/22/2008 | CA2367075C Method and system for testing a borehole by the use of a movable plug |
| 07/16/2008 | EP1325310B1 Method and apparatus for downhole fluids analysis |
| 07/16/2008 | CN201087727Y Pressure-selecting control mechanism of pressure-selecting control test switch valve |
| 07/16/2008 | CN201087726Y Manual reversing sampling valve |
| 07/16/2008 | CN101221634A Integrated reservoir optimization |
| 07/16/2008 | CN101220743A 核磁共振模块 NMR module |
| 07/16/2008 | CN100402797C Method for in-situ analysis of formation parameters |
| 07/15/2008 | US7398837 Drill bit assembly with a logging device |
| 07/15/2008 | CA2423232C Improved well testing system |
| 07/10/2008 | US20080163680 Downhole fluid characterization based on changes in acoustic properties |
| 07/09/2008 | EP1942247A1 Method and apparatus to drill in the soil by displacement |
| 07/09/2008 | EP1941129A1 Methods and systems for determining reservoir properties of subterranean formations with pre-existing fractures |
| 07/09/2008 | CN201083837Y Calibrator |
| 07/09/2008 | CN201083688Y Drilling fluid gaseous hydrocarbon component sensor |
| 07/09/2008 | CN201083128Y Annular space water detector electrothermal leading head |
| 07/09/2008 | CN201083127Y Anti-freezing anti-theft sampling pipe plug |
| 07/09/2008 | CN201083098Y Well head reinforcing device for steel wire salvaging and testing |
| 07/09/2008 | CN101216446A Combined electrode for determining sulphur ion of drilling fluids |
| 07/09/2008 | CN100401107C Method for using pulsed field gradient NMR measurements to determine fluid properties in a fluid sampling well logging tool |
| 07/08/2008 | US7395879 MWD formation tester |
| 07/08/2008 | US7395712 Testing of bottomhole samplers using acoustics |
| 07/08/2008 | US7395704 Method and apparatus for downhole fluid analysis using molecularly imprinted polymers |
| 07/08/2008 | US7395703 Formation testing apparatus and method for smooth draw down |
| 07/08/2008 | US7395691 Method and apparatus for determining gas content of subsurface fluids for oil and gas exploration |
| 07/08/2008 | CA2467863C Downhole sampling apparatus and method |
| 07/03/2008 | WO2008079512A1 A method and apparatus for estimating a property of a downhole fluid using a coated resonator |