| 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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| 01/11/2007 | US20070007004 Composition and method to enhance recovery from oil wells |
| 01/10/2007 | CN2856415Y Rock chips sampler for gas drilling |
| 01/10/2007 | CN1891979A Shoulder bed effects removal |
| 01/10/2007 | CN1891978A Method for detecting oil field fluid-channeling channel |
| 01/09/2007 | CA2485824C Self-calibrated ultrasonic method of in-situ measurement of borehole fluid acoustic properties |
| 01/09/2007 | CA2422458C Sub apparatus with exchangeable modules |
| 01/04/2007 | US20070000338 Sheet-form membrane sample probe, method and apparatus for fluid concentration analysis |
| 01/03/2007 | CN2854086Y Gas logging equipment with device for preventing drill mud into it |
| 01/03/2007 | CN1293713C Method and apparatus for determining position in pipe |
| 01/03/2007 | CN1293283C Apparatus and method for placing data testing device into under-ground rock stratum |
| 01/02/2007 | US7158887 Fluids chain-of-custody |
| 01/02/2007 | US7158886 Automatic control system and method for bottom hole pressure in the underbalance drilling |
| 01/02/2007 | US7155967 Formation testing apparatus and method |
| 01/02/2007 | CA2406801C Treatment well tiltmeter system |
| 01/02/2007 | CA2287773C Downhole nmr tool having a programmable pulse sequencer |
| 12/28/2006 | WO2006138530A1 Apparatus, method and system for improved reservoir simulation using an algebraic cascading class linear solver |
| 12/28/2006 | CA2612093A1 Apparatus, method and system for improved reservoir simulation using an algebraic cascading class linear solver |
| 12/27/2006 | EP1735524A2 A method and apparatus for downhole fluid analysis for reservoir fluid characterization |
| 12/27/2006 | EP1735522A2 Multiple distributed pressure measurements |
| 12/27/2006 | CN2851577Y Oil sampling and metering device |
| 12/27/2006 | CN2851576Y Compensation type water holdup instrument |
| 12/27/2006 | CN2851575Y Digital coring logger |
| 12/27/2006 | CN2851574Y Rupture disc controlled type spherical downhole shut-in valve |
| 12/27/2006 | CN2851573Y Impulse neutron logging tool |
| 12/27/2006 | CN2851550Y Novel multifunctional oil thief end cap |
| 12/27/2006 | CN1292241C Positioning and fastening arrangement for drilling and coring on vertical circular cylinder |
| 12/27/2006 | CN1292148C Underground gas collecting drilling tool |
| 12/27/2006 | CN1292147C Method for characterising parameters of wells, well bottom zone and device for carrryingout said method |
| 12/26/2006 | US7154411 Reservoir management system and method |
| 12/26/2006 | US7152466 Methods and apparatus for rapidly measuring pressure in earth formations |
| 12/21/2006 | US20060283634 Automated, low profile drilling/bolting module with manual bolt magazine |
| 12/20/2006 | EP1733330A1 Method for constructing a geologic model of a subsurface reservoir |
| 12/20/2006 | EP1733222A1 Apparatus and methods for acoustically determining fluid properties while sampling |
| 12/20/2006 | CN2849169Y Automatic sampling device of oil pipeline |
| 12/20/2006 | CN1882783A Well jet device for logging horizontal wells and the operating method thereof |
| 12/20/2006 | CN1882761A Method and apparatus for downhole fluid analysis using molecularly imprinted polymers |
| 12/20/2006 | CN1880723A Modular connector and method |
| 12/20/2006 | CN1880722A Method for identifying stratum density at intervals of hole enlargement |
| 12/13/2006 | EP1356189B1 Method to evaluate the hydrocarbon potential of sedimentary basins from fluid inclusions |
| 12/12/2006 | US7147064 Laser spectroscopy/chromatography drill bit and methods |
| 12/12/2006 | CA2287285C A method and an apparatus for production testing involving first and second permeable formations |
| 12/12/2006 | CA2259176C Method and apparatus for testing, completing and/or maintaining wellbores using a sensor device |
| 12/12/2006 | CA2236615C Differential total-gas determination while drilling |
| 12/07/2006 | WO2005113937A3 Methods and apparatus for measuring formation properties |
| 12/07/2006 | US20060272861 Method for improving drilling depth measurements |
| 12/07/2006 | US20060272860 Methods of improving well bore pressure containment integrity |
| 12/07/2006 | US20060272809 Wellbores utilizing fiber optic-based sensors and operating devices |
| 12/06/2006 | EP1728063A1 Improved ball penetrometer for soft soils testing |
| 12/05/2006 | US7143826 Method for determining sand free production rate and simultaneously completing a borehole |
| 12/05/2006 | CA2435951C Method for detecting hydrocarbons by comparing nmr response at different depths of investigation |
| 12/02/2006 | CA2548639A1 Method for assessing the acidity of petroleum samples by isotopic marking |
| 11/30/2006 | US20060266109 Method and apparatus for reservoir characterization using photoacoustic spectroscopy |
| 11/29/2006 | EP1725968A1 Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data |
| 11/29/2006 | EP1322837B1 Improved well testing system |
| 11/29/2006 | CN2841962Y Single-loop impedance sensor for underground fluid moisture content measurement |
| 11/29/2006 | CN2841961Y Injection-gathering well head low-pressure sampler |
| 11/28/2006 | US7140436 Apparatus and method for controlling the pressure of fluid within a sample chamber |
| 11/28/2006 | US7140434 Sensor system |
| 11/23/2006 | WO2006124028A1 Method of drilling a stable borehole |
| 11/23/2006 | US20060260806 Method and system for wellbore communication |
| 11/23/2006 | US20060260805 Apparatus and method for obtaining downhole samples |
| 11/23/2006 | CA2621655A1 Method of drilling a stable borehole |
| 11/22/2006 | EP1608844A4 Formation testing and sampling apparatus and methods |
| 11/22/2006 | CN1865656A Apparatus and method for obtaining downhole samples |
| 11/22/2006 | CN1865652A Anti-theft sampling valve |
| 11/21/2006 | CA2456506C Electronic core orientation device |
| 11/21/2006 | CA2390706C Reservoir management system and method |
| 11/16/2006 | US20060254819 Apparatus and method for measuring while drilling |
| 11/16/2006 | US20060254350 Measuring mud flow velocity using pulsed neutrons |
| 11/15/2006 | CN2837510Y Oil-gas separation sampling barrel with scales |
| 11/15/2006 | CN1861981A Apparatus and method for sensing downhole parameters. |
| 11/15/2006 | CN1861979A Method of heavy oil cold flow production |
| 11/10/2006 | CA2546139A1 Method for determining characteristics of earth formations |
| 11/09/2006 | WO2006117604A1 Methods and apparatus of downhole fluid analysis |
| 11/09/2006 | WO2006117008A1 Method and sample removal device for obtaining a water and/or oil and/or gas and or solids-containing sample medium from a borehole |
| 11/09/2006 | US20060250130 Contamination estimation using fluid analysis models |
| 11/09/2006 | US20060249288 Identifying zones of origin of annular gas pressure |
| 11/09/2006 | US20060249287 Steerable drilling system |
| 11/09/2006 | US20060248948 Method for determining of the formation factor for a subterranean deposit from measurements on drilling waste removed therefrom |
| 11/09/2006 | CA2605830A1 Methods and apparatus of downhole fluid analysis |
| 11/08/2006 | EP1719875A2 Pyrolytic oil-productivity index method for predicting reservoir rock and oil characteristics |
| 11/08/2006 | CN2835554Y Acoustic variable-density well logging instrument |
| 11/08/2006 | CN1860489A Characterizing connectivity in reservoir models using paths of least resistance |
| 11/08/2006 | CN1283989C Methods and apparatus for downhole fluids analysis |
| 11/08/2006 | CN1283981C Oil and water content and profile fiber sensor |
| 11/08/2006 | CN1283898C Determining the PVT properties of a hydrocarbon reservoir fluid |
| 11/08/2006 | CN1283897C Method and system for defining serious sand sedimentation section in drilling process |
| 11/08/2006 | CN1283896C Method and apparatus for determining oil-layer characteristic |
| 11/08/2006 | CN1283895C Method and apparatus for locating indexing systems in cased well and conducting multilateral branch operations |
| 11/07/2006 | CA2289042C Method for determining sedimentary rock pore pressure caused by effective stress unloading |
| 11/02/2006 | WO2006114512A1 Device for extracting at least one type of gas contained in a drilling mud, an analysis arrangement and a related extraction method |
| 11/02/2006 | US20060243438 Method to measure injector inflow profiles |
| 11/02/2006 | EP1716314A1 Smooth draw-down for formation pressure testing |
| 11/02/2006 | DE102006019813A1 Fluid analysis assembly for down hole tool, has sensors that communicate with formation fluid to sense one parameter of formation fluid while pressure of formation fluid changes in continuous manner |
| 11/02/2006 | CA2606415A1 Device for extracting at least one type of gas contained in a drilling mud, an analysis arrangement and a related extraction method |
| 10/31/2006 | US7128149 Apparatus and methods for improved fluid displacement in subterranean formations |
| 10/31/2006 | US7128144 Formation testing and sampling apparatus and methods |
| 10/31/2006 | US7128142 Apparatus and methods for improved fluid displacement in subterranean formations |
| 10/26/2006 | US20060237232 Sealed barrel |
| 10/25/2006 | EP1714230A2 Reservoir model building methods |