| 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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| 05/07/2008 | CN201057041Y Lengthened connection device |
| 05/06/2008 | US7369980 Method for constructing a geologic model of a subsurface reservoir |
| 05/06/2008 | US7368909 Downhole high resolution NMR spectroscopy with polarization enhancement |
| 05/06/2008 | US7367394 Formation evaluation while drilling |
| 05/03/2008 | CA2567292A1 Seismic drilling bit |
| 05/02/2008 | WO2008052163A1 Sanding advisor |
| 05/02/2008 | WO2008051900A2 High accuracy contamination estimation in hydrocarbon samples using gc x gc |
| 05/02/2008 | CA2667523A1 High accuracy contamination estimation in hydrocarbon samples using gc x gc |
| 05/01/2008 | US20080099242 Drill stem coupling and method for a directional drill |
| 05/01/2008 | US20080099241 Characterizing a reservoir in connection with drilling operations |
| 05/01/2008 | US20080099198 Sanding advisor |
| 05/01/2008 | US20080099195 Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 04/30/2008 | EP1915721A2 High-level graphical programming language and tool for well management programming |
| 04/30/2008 | DE102007010532B3 Soil substance density determining method for e.g. hardening survey in earthwork, involves determining wet and dry density of substance from pit capacity, mass of substance and humidity ratio |
| 04/30/2008 | CN201053319Y Horizontal well hard electrode logging device |
| 04/30/2008 | CN201053317Y Logging device by-pass short joint spray-proof sealing device |
| 04/30/2008 | CN201053314Y Horizontal well flexible short section |
| 04/30/2008 | CN101169035A Erecting light-supplying device for adjustable drilling television imager |
| 04/29/2008 | US7363972 Method and apparatus for well testing |
| 04/29/2008 | US7363971 Method and apparatus for maintaining a multi-chip module at a temperature above downhole temperature |
| 04/29/2008 | CA2486091C Controlling a pressure transient in a well |
| 04/24/2008 | US20080097735 System for predicting changes in a drilling event during wellbore drilling prior to the occurrence of the event |
| 04/23/2008 | EP1807606B1 Method and system for production metering of oil wells |
| 04/23/2008 | CN201050366Y Petroleum foam drilling and sampling analyzer |
| 04/23/2008 | CN201050365Y Petroleum gas drilling and sampling analyzer |
| 04/23/2008 | CN201050364Y Ground surface wireless read-write type inner-hole electronic measuring device |
| 04/22/2008 | US7362422 Method and apparatus for a downhole spectrometer based on electronically tunable optical filters |
| 04/22/2008 | US7360597 Method and apparatus for gas displacement well systems |
| 04/22/2008 | CA2524666C Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/22/2008 | CA2455437C Coring bit with uncoupled sleeve |
| 04/22/2008 | CA2357402C Method and system for predicting performance of a drilling system for a given formation |
| 04/17/2008 | WO2008045769A1 Apparatus and methods for estimating a characteristic of a fluid downhole using thermal properties of the fluid |
| 04/17/2008 | WO2008045045A1 Apparatus and method for manipulating fluid during drilling or pumping operations |
| 04/17/2008 | WO2007132360A3 Method and system for sampling dissolved gas |
| 04/17/2008 | WO2007034131A8 Electro-chemical sensor |
| 04/17/2008 | US20080087470 Formation Evaluation While Drilling |
| 04/16/2008 | EP1911928A1 Apparatus and method for detecting hydrocarbons in a wellbore during drilling |
| 04/16/2008 | EP1910782A2 In-stream spectroscopic elemental analysis of particles being conducted within a gaseous stream |
| 04/16/2008 | CN201047281Y Combination logging tool |
| 04/15/2008 | US7359844 Real time earth model for collaborative geosteering |
| 04/15/2008 | US7357196 Method and system for predicting performance of a drilling system for a given formation |
| 04/15/2008 | US7357180 Inhibiting effects of sloughing in wellbores |
| 04/15/2008 | CA2489928C Apparatus and method of monitoring and signaling for downhole tools |
| 04/11/2008 | CA2665125A1 Apparatus and method for manipulating fluid during drilling or pumping operations |
| 04/10/2008 | WO2008042772A2 Formation testing and sampling tool including a coring device |
| 04/10/2008 | WO2008041010A1 Methods and systems for well stimulation using multiple angled fracturing |
| 04/10/2008 | WO2007142554A3 Device for testing crude oil and gas |
| 04/10/2008 | US20080083531 Methods and systems for well stimulation using multiple angled fracturing |
| 04/10/2008 | CA2665328A1 Methods and systems for well stimulation using multiple angled fracturing |
| 04/09/2008 | EP1907667A2 Systems and methods for installation, design and operation of groundwater monitoring systems in boreholes |
| 04/09/2008 | CN201045295Y High-temperature densilog instrument |
| 04/09/2008 | CN201045286Y Novel test blowout preventer |
| 04/09/2008 | CN201044913Y Well testing wire lubricator |
| 04/09/2008 | CN100379939C Method for measuring formation characteristics by utilizing time-limited formation test |
| 04/08/2008 | CA2177021C Microscopy imaging of earth formations |
| 04/03/2008 | WO2008040030A2 Improving formation evaluation using estimated borehole tool position |
| 04/03/2008 | WO2008039411A2 Coiled tubing injector with a weight on bit circuit |
| 04/03/2008 | US20080078582 Variable positioning deep cutting rotary coring tool with expandable bit |
| 04/03/2008 | US20080078581 Method and Apparatus for Sampling High Viscosity Formation Fluids |
| 04/03/2008 | US20080078544 Method and Apparatus for Performing Spectroscopy Downhole within a Wellbore |
| 04/03/2008 | US20080078543 Methods of Quantifying Gas Content of a Gas-Sorbed Formation Solid |
| 04/03/2008 | US20080078242 Formation evaluation using estimated borehole tool position |
| 04/03/2008 | US20080078241 Formation testing and sampling tool including a coring device |
| 04/02/2008 | EP1805394B1 Movable supporting construction |
| 04/02/2008 | EP1509669B1 Method for regression analysis of formation parameters |
| 04/01/2008 | CA2254770C Downhole tool |
| 03/27/2008 | WO2008036520A1 Formation fluid sampling tools and methods utilizing chemical heating |
| 03/27/2008 | WO2008036395A1 Focused probe apparatus and method therefor |
| 03/27/2008 | WO2008035030A1 System and method for operational management of a guarded probe for formation fluid sampling |
| 03/27/2008 | WO2008034174A1 Core barrel capacity gauge |
| 03/27/2008 | WO1999057417A3 Chemical actuation system for downhole tools and method for detecting failure of an inflatable element |
| 03/27/2008 | US20080073078 System and method for operational management of a guarded probe for formation fluid sampling |
| 03/27/2008 | CA2661349A1 Core barrel capacity gauge |
| 03/26/2008 | EP1903178A2 Three dimensional steerable system |
| 03/26/2008 | CN201042086Y Heating device for inductive instrument |
| 03/26/2008 | CN201041537Y An integrated well carbonate intelligent detection device |
| 03/26/2008 | CN201041042Y N electrode dynamic selection device |
| 03/26/2008 | CN201041041Y Hydraulic pusher transfer cover |
| 03/26/2008 | CN201041040Y Double lateral monitor electrode anti-jamming device |
| 03/26/2008 | CN201041039Y Microelectrode array for measuring downhole shallow slurry electrical resistivity |
| 03/26/2008 | CN201041038Y Lateral logging device rubber electrode array |
| 03/26/2008 | CN201041031Y Six-arm dip logging instrument |
| 03/25/2008 | US7347284 Apparatus and method for hard rock sidewall coring of a borehole |
| 03/25/2008 | US7347281 Coring tubular and method for reducing contamination and processing speed of a core sample |
| 03/25/2008 | US7347262 Downhole sampling tool and method for using same |
| 03/20/2008 | WO2008010174A3 Dust particle catcher for a drilling apparatus |
| 03/20/2008 | US20080066962 Apparatus and Methods for Measurement of Solids in a Wellbore |
| 03/20/2008 | US20080066908 System and method for downhole sampling or sensing of clean samples of component fluids of a multi-fluid mixture |
| 03/20/2008 | US20080066904 Formation Fluid Sampling Tools and Methods Utilizing Chemical Heating |
| 03/20/2008 | US20080066538 Downhole fluid analysis for production logging |
| 03/20/2008 | US20080066537 Systems and Methods for Downhole Fluid Compatibility |
| 03/20/2008 | US20080066536 Method and apparatus for sampling formation fluids |
| 03/20/2008 | US20080066535 Adjustable Testing Tool and Method of Use |
| 03/20/2008 | US20080066534 Obtaining and evaluating downhole samples with a coring tool |
| 03/19/2008 | EP1631732B1 A method and apparatus for an advanced optical analyzer |
| 03/19/2008 | CN201037420Y High temperature compensated neutron logger |
| 03/19/2008 | CN201037419Y Rolling wheel type well logger righting device |
| 03/19/2008 | CN201037418Y Induction well logger winding tying-wimble tightening bearing device |
| 03/19/2008 | CN201037413Y Portable well logger maintaining and testing device |
| 03/19/2008 | CN201037411Y Well logger scale device and system thereof |