| 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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| 01/08/2008 | CA2503225C Enhanced measurement of azimuthal dependence of subterranean parameters |
| 01/08/2008 | CA2457650C Method and apparatus for determining downhole pressures during a drilling operation |
| 01/03/2008 | WO2008000932A2 Optimized method for storing heat energy in an aquifer |
| 01/03/2008 | US20080000691 Downhole abrading tool having a taggant injection assembly for indicating excessive wear |
| 01/02/2008 | CN200999611Y Theftproof sampling valve for oil well |
| 01/02/2008 | CN200999610Y Oil well head multiple anti-theft sampler |
| 01/02/2008 | CN101096909A Method for recognizing oil layer and evaluating production capacity |
| 12/27/2007 | WO2007148979A1 Sampling tool for hydrocarbon-producing wells |
| 12/26/2007 | EP1869579A2 Solution method and apparatus for large-scale simulation of layered formations |
| 12/26/2007 | EP1131615B1 Method and system for extracting, analysing and measuring constituents transported by a bore fluid |
| 12/26/2007 | CN200996998Y VSP underground micro-wave detecter with sidewall contact device |
| 12/26/2007 | CN200996293Y Safety embedded oil-sampling valve |
| 12/26/2007 | CN101092874A Method for measuring formation properties with a time-limited formation test |
| 12/25/2007 | US7311142 Apparatus and method for aquiring information while drilling |
| 12/25/2007 | US7311011 Apparatuses for interaction with a subterranean formation, and methods of use thereof |
| 12/21/2007 | WO2007146801A2 Measurement while drilling tool with interconnect assembly |
| 12/21/2007 | WO2007145841A2 A method and apparatus for collecting fluid samples downhole |
| 12/21/2007 | CA2654730A1 Method and system for designing and optimizing drilling and completion operations in hydrocarbon reservoirs |
| 12/20/2007 | US20070289372 Flow through in situ reactors with suction lysimeter sampling capability and methods of using |
| 12/20/2007 | DE102006013409B4 Vorrichtung zur kontrollierten, repräsentativen Entnahme von Wasserproben sowie Verfahren zur Probennahme Device for the controlled, representative taking water samples and methods for sampling |
| 12/19/2007 | CN200993652Y High temperature high-pressure mud shale expansion measuring equipment |
| 12/19/2007 | CN200993072Y Underground turbo generator |
| 12/19/2007 | CN100356073C Eccentering arm hydraulic loop device for through-casing resistivity logging instrument for petroleum well |
| 12/18/2007 | CA2386314C Asphaltenes monitoring and control system |
| 12/13/2007 | WO2007143474A1 Method and system for monitoring a fluid flowing through a conduit, and method of producing a hydrocarbon fluid |
| 12/13/2007 | WO2007143473A1 Terahertz analysis of a fluid from an earth formation using a downhole tool |
| 12/13/2007 | WO2007142554A2 Device for testing crude oil and gas |
| 12/13/2007 | WO2007141512A1 In-borehole gas monitor apparatus and method |
| 12/13/2007 | US20070284099 Method and apparatus for collecting fluid samples downhole |
| 12/13/2007 | CA2654052A1 In-borehole gas monitor apparatus and method |
| 12/13/2007 | CA2650522A1 Method and system for monitoring a fluid flowing through a conduit, and method of producing a hydrocarbon fluid |
| 12/13/2007 | CA2650521A1 Method of analyzing a fluid, and apparatus for measuring a fluid |
| 12/13/2007 | CA2591020A1 Interpreting well test measurements |
| 12/12/2007 | EP1865147A1 A method and apparatus for a downhole micro-sampler |
| 12/11/2007 | US7306036 System for reducing adhesion and cohesion between non metallic bailers and side wall of wells |
| 12/06/2007 | US20070278010 Device for channeling solids and fluids within a reverse circulation drill |
| 12/05/2007 | CN200985791Y Electronic type down-hole high pressure physical sampler |
| 12/05/2007 | CN101082277A Oil well drilling geological X-ray fluorescent debris logging method |
| 12/05/2007 | CN101082276A Methods and device of oriented electromagnetic wave electric resistivity |
| 12/05/2007 | CN100353028C Method and apparatus for sampling underground fluid |
| 12/05/2007 | CN100353027C Under balance drilling bottom pressure automatic control system and method |
| 12/04/2007 | US7305306 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof |
| 12/04/2007 | US7303011 Downhole formation testing tool |
| 12/04/2007 | US7303006 Method for improved vertical sweep of oil reservoirs |
| 12/04/2007 | US7302849 Method and system for monitoring of fluid-filled domains in a medium based on interface waves propagating along their surfaces |
| 12/04/2007 | CA2450653C Use of axial accelerometer for estimation of instantaneous rop downhole for lwd and wireline applications |
| 12/04/2007 | CA2323654C Wellbore antennae system and method |
| 12/04/2007 | CA2296054C Computer controlled injection wells |
| 11/29/2007 | WO2007135445A1 Pump system for zonal isolation testing |
| 11/29/2007 | WO2007134747A1 Testing process for zero emission hydrocarbon wells |
| 11/29/2007 | WO2007082025A3 Docking receiver of a zone isolation assembly for a subsurface well |
| 11/29/2007 | US20070272407 Method and system for development of naturally fractured formations |
| 11/29/2007 | CA2652468A1 Testing process for zero emission hydrocarbon wells |
| 11/28/2007 | EP1860278A1 Single phase fluid sampling apparatus and method for use of same |
| 11/28/2007 | EP1242881B1 Method and system for simulating a hydrocarbon-bearing formation |
| 11/28/2007 | CN200982194Y Cable and pumping type stratum testing sampler |
| 11/28/2007 | CN200982162Y Stratified test sand control pipe |
| 11/28/2007 | CN101078348A Single phase fluid sampling apparatus and method for use of same |
| 11/28/2007 | CN101078347A Small wellbore multi-bottom branch well logger view electrical resistivity electrode array |
| 11/27/2007 | US7299884 Seismic measurements while drilling |
| 11/27/2007 | CA2524554C Electrical energy from a wellbore light cell |
| 11/27/2007 | CA2264632C Wellbores utilizing fiber optic-based sensors and operating devices |
| 11/22/2007 | CA2642536A1 Method and system for sampling dissolved gas |
| 11/21/2007 | EP1856412A2 Downhole uses of piezoelectric motors |
| 11/21/2007 | CN200978669Y Downhole safety eccentering device for logger |
| 11/21/2007 | CN100350128C Portable infrared logging instrument for drilling well |
| 11/20/2007 | US7296637 Oil drilling tool |
| 11/15/2007 | US20070265778 Method for automated management of hydrocarbon gathering systems |
| 11/15/2007 | US20070261886 Core drill assembly with adjustable total flow area and restricted flow between outer and inner barrel assemblies |
| 11/15/2007 | CA2647416A1 Drill bit assembly with a logging device |
| 11/14/2007 | EP1855109A2 Method and apparatus for simulating PVT parameters |
| 11/14/2007 | CN200975254Y Logging degasifier liquid level automatic tracking system |
| 11/14/2007 | CN200975253Y Exploratory boring rubber-pipe |
| 11/13/2007 | US7295927 Determining water saturation for oil bearing thin-bedded formation having anisotropic resistivity |
| 11/13/2007 | US7295926 Method for correlating well logs |
| 11/13/2007 | US7293613 Logging-while-coring method and apparatus |
| 11/13/2007 | CA2443111C Method and apparatus for analyzing casing wear and retrieval of metallic fragments |
| 11/13/2007 | CA2421137C Realtime control of a drilling system using an output from the combination of an earth model and a drilling process model |
| 11/08/2007 | US20070256832 Method of analyzing a subterranean formation and method of producing a mineral hydrocarbon fluid from the formation |
| 11/08/2007 | US20070256830 Method and an apparatus for evaluating a geometry of a hydraulic fracture in a rock formation |
| 11/07/2007 | EP1852718A2 Downhole NMR processing |
| 11/07/2007 | CN200971779Y Electronic underground instrument throwing instrument |
| 11/07/2007 | CN200971778Y Well surveying device of electromagnet defects detector combined with 18 arm well diameter instrument |
| 11/07/2007 | CN100347406C Formation testing apparatus with axially and spirally mounted prots when drilling |
| 11/06/2007 | US7290443 Method for measuring formation properties with a time-limited formation test |
| 11/01/2007 | WO2007121560A1 Drill cutting sampler |
| 11/01/2007 | WO2007101444A3 System for injecting a substance into the space surrounding a well tubular |
| 10/31/2007 | EP1319116B1 Evaluation of multilayer reservoirs |
| 10/31/2007 | CN101065556A A method and apparatus for storing energy and multiplying force to pressurize a downhole fluid sample |
| 10/31/2007 | CN101063407A Micro-balloons polar plate combining with compensate denseness skateboard |
| 10/30/2007 | US7289943 Lumping and delumping method for describing hydrocarbon-containing fluids |
| 10/30/2007 | US7287589 Well treatment system and method |
| 10/30/2007 | US7287585 Methods of quantifying gas content of a gas-sorbed formation solid |
| 10/25/2007 | WO2007118997A1 Improved probe for pressure meter |
| 10/25/2007 | CA2648726A1 Improved probe for pressure meter |
| 10/24/2007 | CN200964856Y Water-holding probe for measuring |
| 10/24/2007 | CN200964855Y Combined logging sample gas purifying device |
| 10/24/2007 | CN200964854Y Anti-theft sampling valve lock and key thereof |
| 10/24/2007 | CN200964853Y High resolution natural potential logging device |
| 10/24/2007 | CN200964842Y Plug type sealing stopper |