| 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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| 03/29/2007 | CA2623001A1 Protective barriers for small devices |
| 03/28/2007 | CN1936269A Three-layer water-searching pipe column for oil-pumping well in oil field and water-searching method |
| 03/28/2007 | CN1307435C Method and apparatus for collecting layer character by nuclear magnetic resonance measure |
| 03/27/2007 | US7195083 Three dimensional steering system and method for steering bit to drill borehole |
| 03/27/2007 | US7195063 Downhole sampling apparatus and method for using same |
| 03/27/2007 | CA2362543C Analysis of downhole formation fluid contaminated by oil-based mud |
| 03/22/2007 | US20070062272 Method for detecting hydrocarbons in geological strata. |
| 03/21/2007 | EP1763737A1 Reservoir evaluation methods |
| 03/21/2007 | CN2881097Y Drilling type side-wall coring apparatus |
| 03/21/2007 | CN1306147C Comprehensive logging system and method in petroleum geological survey process |
| 03/21/2007 | CN1306144C Split diameter-changing oil testing swab |
| 03/20/2007 | US7193414 Downhole NMR processing |
| 03/20/2007 | US7191851 Unattended ground sensor assembly |
| 03/20/2007 | US7191831 Downhole formation testing tool |
| 03/15/2007 | WO2007030234A1 Methods to detect formation pressure |
| 03/15/2007 | US20070061117 Reservoir model building methods |
| 03/15/2007 | US20070056728 Methods of using settable compositions comprising cement kiln dust |
| 03/14/2007 | CN2878673Y Electronic coded lock for double controlling circuit |
| 03/14/2007 | CN1930573A Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data |
| 03/14/2007 | CN1928321A Method for down-hole laminated sampling and measuring |
| 03/14/2007 | CN1304730C Sampling method and devce capable of reducing pollution |
| 03/13/2007 | CA2343095C In situ borehole sample analyzing probe and valved casing coupler therefor |
| 03/12/2007 | CA2556655A1 Borehole imaging |
| 03/08/2007 | WO2007027683A2 Rotary coring device and method for acquiring a sidewall core from an earth formation |
| 03/08/2007 | WO2007008844A3 Systems and methods for installation, design and operation of groundwater monitoring systems in boreholes |
| 03/08/2007 | WO2006008172A8 Method and apparatus for estimating a permeability distribution during a well test |
| 03/07/2007 | CN1924292A Multifunctional choke plug for oil sample fetching |
| 03/07/2007 | CN1303310C Method for water searching and blocking for oil well |
| 03/07/2007 | CN1303309C Method of controlling direction of propagation of injection fractures in permeable formations |
| 03/06/2007 | US7188058 Method of load and failure prediction of downhole liners and wellbores |
| 03/01/2007 | WO2006044350B1 Apparatus and method for hard rock sidewall coring of a borehole |
| 03/01/2007 | US20070045005 Rotary coring device and method for acquiring a sidewall core from an earth formation |
| 03/01/2007 | US20070044958 Well Operating Elements Comprising a Soluble Component and Methods of Use |
| 02/28/2007 | CN1920253A Formation evaluation system and method |
| 02/28/2007 | CN1920245A Geological observation well mouth apparatus with exploitation process of thick oil steam drive gravity for oil leakage |
| 02/27/2007 | US7182152 Sampling isolator |
| 02/27/2007 | US7182138 Reservoir communication by creating a local underbalance and using treatment fluid |
| 02/27/2007 | CA2419506C Formation testing apparatus with axially and spirally mounted ports |
| 02/22/2007 | WO2007020492A2 Spectral imaging for downhole fluid characterization |
| 02/22/2007 | WO2005113935A3 Methods and apparatus for using formation property data |
| 02/22/2007 | US20070039731 Formation testing and sampling apparatus and methods |
| 02/22/2007 | US20070039730 Apparatus and method for aquiring information while drilling |
| 02/22/2007 | CA2619002A1 Spectral imaging for downhole fluid characterization |
| 02/21/2007 | CN2871842Y Bridging stratified sampling tester of oil-water well |
| 02/21/2007 | CN2871841Y Stratified oil-extraction tester |
| 02/21/2007 | CN1916360A Logging method and logging instrument of natural potential in high resolution |
| 02/20/2007 | US7181380 System and process for optimal selection of hydrocarbon well completion type and design |
| 02/20/2007 | US7178591 Apparatus and method for formation evaluation |
| 02/20/2007 | US7178392 Determining the pressure of formation fluid in earth formations surrounding a borehole |
| 02/20/2007 | US7178391 Insertion tube methods and apparatus |
| 02/15/2007 | WO2007019585A2 Methods and compositions for determination of fracture geometry in subterranean formations |
| 02/15/2007 | WO2007019472A1 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 02/15/2007 | WO2007018858A2 Well modeling associated with extraction of hydrocarbons from subsurface formations |
| 02/15/2007 | US20070038375 Diagnosis of formation characteristics in wells |
| 02/15/2007 | US20070034373 Methods and compositions for determination of fracture geometry in subterranean formations |
| 02/15/2007 | US20070034369 Controlling transient pressure conditions in a wellbore |
| 02/15/2007 | CA2625012A1 Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
| 02/14/2007 | EP1751396A2 Method and apparatus for performing chemical treatments of exposed geological formations |
| 02/14/2007 | CN1912656A Anti-symmetrized electromagnetic measurements |
| 02/14/2007 | CN1912341A Methods and apparatus of fluid analysis |
| 02/14/2007 | CN1912340A Pretest method for comprehensive water-containing residual oil engineering at polymer separate stage |
| 02/07/2007 | CN2866813Y Magnetic power conducting mechanism |
| 02/07/2007 | CN1908372A Security lock |
| 02/07/2007 | CN1298964C Method for micrometering well by detectors series setted in well |
| 02/06/2007 | US7172038 Well system |
| 02/06/2007 | US7172036 Soil sample containment device and method |
| 02/06/2007 | CA2396900C Induction apparatus and method for determining dip angle in subterranean earth formations |
| 02/01/2007 | WO2007013883A2 Method of estimating fracture geometry, compositions and articles used for the same |
| 02/01/2007 | US20070027666 Characterizing connectivity in reservoir models using paths of least resistance |
| 01/31/2007 | EP1747347A2 Downhole probe assembly |
| 01/31/2007 | CN2864091Y Multifunctional current logging instrumentation |
| 01/31/2007 | CN1906379A Measuring device and drilling device for deep drillings |
| 01/30/2007 | US7168508 Logging-while-coring method and apparatus |
| 01/30/2007 | US7168487 Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore |
| 01/25/2007 | WO2005091899A3 Surface real-time processing of downhole data |
| 01/25/2007 | US20070017674 Method and Apparatus for Gas displacement Well Systems |
| 01/25/2007 | DE102004003481B4 Meßeinrichtung und Bohrvorrichtung für Tiefbohrungen sowie Verfahren zur Messung relevanter Daten bei Tiefbohrungen Measuring device and drilling device for deep drilling and method for measuring relevant data in deep wells |
| 01/24/2007 | CN1900483A Apparatus and method to measure fluid resistivity |
| 01/24/2007 | CN1900482A Automatic spectrum stabilizing method for natural gamma energy spectrum logging instrument |
| 01/23/2007 | US7165616 Method of controlling the direction of propagation of injection fractures in permeable formations |
| 01/23/2007 | CA2472105C Apparatus and method for cleaning and sealing a well borehole portion for formation evaluation |
| 01/23/2007 | CA2421000C Formation tester pretest using pulsed flow rate control |
| 01/23/2007 | CA2401375C Apparatus and method for controlling well fluid sample pressure |
| 01/23/2007 | CA2289129C Earth formation surveying device |
| 01/23/2007 | CA2193923C Method of oil/gas stimulation |
| 01/18/2007 | WO2006044350A3 Apparatus and method for hard rock sidewall coring of a borehole |
| 01/18/2007 | US20070013911 Light source for a downhole spectrometer |
| 01/17/2007 | CN1898675A Reservoir model building methods |
| 01/17/2007 | CN1898640A Reservoir evaluation methods |
| 01/17/2007 | CN1896459A System and methods of deriving differential fluid properties of downhole fluids |
| 01/17/2007 | CN1896458A System and methods of deriving fluid properties of downhole fluids and uncertainty thereof |
| 01/16/2007 | US7164990 Method of determining fluid flow |
| 01/16/2007 | US7162918 Method and apparatus for downhole fluid characterization using flexural mechanical resonators |
| 01/16/2007 | CA2414617C Production profile determination and modification system |
| 01/14/2007 | CA2552291A1 Methods and systems for monitoring pressure during jet grouting |
| 01/11/2007 | WO2007005944A2 Composition and method to enhance recovery from oil wells |
| 01/11/2007 | WO2007005071A1 Formation tester tool assembly |
| 01/11/2007 | WO2006044567A3 A method and apparatus for storing energy and multiplying force to pressurize a downhole fluid sample |
| 01/11/2007 | WO2005113938A3 Methods for using a formation tester |
| 01/11/2007 | US20070007008 Formation tester tool assembly |