| 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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| 02/26/2002 | US6349766 Chemical actuation of downhole tools |
| 02/21/2002 | WO2002014907A1 Apparatus and method for synchronized formation measurement |
| 02/21/2002 | WO2002014652A1 Formation testing apparatus with axially and spirally mounted ports |
| 02/21/2002 | US20020020560 Wireline system for multiple direct push tool usage |
| 02/21/2002 | US20020020535 Reservoir communication with a wellbore |
| 02/21/2002 | US20020020215 Apparatus and method to obtain representative samples of oil well production |
| 02/20/2002 | CN2477829Y Boss type sucking weight increasing rod |
| 02/19/2002 | US6347666 Method and apparatus for continuously testing a well |
| 02/14/2002 | US20020017387 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 02/14/2002 | US20020017386 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 02/14/2002 | US20020017385 Method and an apparatus for use in production tests, testing an expected permeable formation |
| 02/14/2002 | DE10038315A1 Drill pipe rod, to take a soil sample, has a sample holder section of two pipe shell segments with independent movement to take the sample easily and rapidly for trouble-free evaluation |
| 02/07/2002 | US20020016702 Method for modelling flows in a fractured medium crossed by large fractures |
| 02/05/2002 | US6343650 Test, drill and pull system and method of testing and drilling a well |
| 02/05/2002 | US6343507 Method to improve the quality of a formation fluid sample |
| 01/31/2002 | WO2002008571A1 Method for fast and extensive formation evaluation |
| 01/31/2002 | WO2002008570A1 Drawdown apparatus and method for in-situ analysis of formation fluids |
| 01/31/2002 | US20020011333 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 01/30/2002 | CN1333459A Whole reservior sampling tester |
| 01/24/2002 | WO2002006634A1 A method of determining properties relating to an underbalanced well |
| 01/24/2002 | US20020010548 Real-time method for maintaining formation stability and monitoring fluid-formation interaction |
| 01/24/2002 | US20020007970 Well system |
| 01/24/2002 | US20020007951 Well flow controller |
| 01/23/2002 | CN1332878A Apparatus and method of well management |
| 01/22/2002 | US6340062 Early formation evaluation tool |
| 01/22/2002 | US6339886 Remotely measured caliper for wellbore fluid sample taking instrument |
| 01/02/2002 | EP1166055A1 A method of estimating properties of a multi-component fluid using pseudocomponents |
| 01/01/2002 | US6334489 Determining subsurface fluid properties using a downhole device |
| 12/27/2001 | WO2001098630A1 Chemical sensor for wellbore applications |
| 12/27/2001 | WO2001067068A3 Apparatus and method for continuous measurement of drilling fluid properties |
| 12/27/2001 | US20010056339 Hydrocarbon reservoir testing |
| 12/25/2001 | CA2020960C Method of monitoring the drilling of a borehole |
| 12/20/2001 | US20010052427 Three dimensional steerable system |
| 12/18/2001 | US6330913 Method and apparatus for testing a well |
| 12/13/2001 | WO2001094982A2 Determining stress parameters of formations from multi-mode velocity data |
| 12/13/2001 | WO2001094749A1 Real-time method for maintaining formation stability |
| 12/13/2001 | US20010050559 Resistivity and dielectric constant well core measurement system for measurement while drilling and laboratory |
| 12/13/2001 | US20010050170 Method and apparatus for downhole production zone |
| 12/13/2001 | CA2412337A1 Real-time formation stability and drilling fluid formation interaction monitoring capability |
| 12/11/2001 | US6328103 Methods and apparatus for downhole completion cleanup |
| 12/11/2001 | US6327919 Method for taking a soil sample from a horizontal borehole |
| 12/11/2001 | CA2167825C Method and device for detecting and/or measuring at least one geophysical parameter on a core sample |
| 12/06/2001 | WO2001092847A1 Device for taking samples from a material of granular or powdery composition |
| 12/06/2001 | WO2001069038A8 Methods for improving oil production |
| 12/05/2001 | EP1159510A2 Wellbore primary barrier and related systems |
| 12/04/2001 | US6325146 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 11/28/2001 | EP1158312A1 Modelling method for fluids in a fractured environment which is traversed by large fractures |
| 11/28/2001 | EP1158139A2 Pyrolytic oil-productivity index method for predicting reservoir rock and oil characteristics |
| 11/27/2001 | US6321595 Characterization of organic contaminants and assessment of remediation performance in subsurface formations |
| 11/22/2001 | US20010042642 Iterative drilling simulation process for enhanced economic decision making |
| 11/22/2001 | US20010042641 Large diameter sampler for gathering an undisturbed sample |
| 11/18/2001 | CA2344565A1 Potentiometric sensor for wellbore applications |
| 11/14/2001 | EP1154076A1 Soil sampler |
| 11/14/2001 | EP1153320A1 Focused formation fluid sampling probe |
| 11/13/2001 | US6317694 Method and apparatus for selecting a sand pack mesh for a filter pack and a well casing slot size for a well |
| 11/08/2001 | WO2001083933A1 Smart-ultrasonic/sonic driller/corer |
| 11/01/2001 | WO2001081724A1 Treatment well tiltmeter system |
| 11/01/2001 | US20010035312 Acoustic sensor for fluid characterization |
| 11/01/2001 | US20010035289 Wellbore logging system |
| 10/24/2001 | EP1147436A2 Hydrocarbon reservoir testing |
| 10/24/2001 | CN2455932Y Program controlled valve for determining downhole water layer and oil layer |
| 10/23/2001 | US6305470 Method and apparatus for production testing involving first and second permeable formations |
| 10/23/2001 | US6305216 Method and apparatus for predicting the fluid characteristics in a well hole |
| 10/23/2001 | CA2212978C Early evaluation formation testing system |
| 10/18/2001 | WO2001077489A1 A method of conducting in situ measurements of properties of a reservoir fluid |
| 10/16/2001 | US6302204 Method of obtaining improved geophysical information about earth formations |
| 10/16/2001 | US6302200 Measurement port coupler for use in a borehole monitoring system |
| 10/16/2001 | US6301959 Focused formation fluid sampling probe |
| 10/16/2001 | US6301953 Quantification of drilling mud cuttings characteristics as a measure of relative permeability |
| 10/10/2001 | EP1141858A2 Apparatus and method of well management |
| 10/10/2001 | EP1141521A2 Improved methods for performing reservoir simulation |
| 10/09/2001 | US6298925 Method and apparatus for installing a small-scale groundwater sampling well |
| 10/09/2001 | CA2155918C Integrated well drilling and evaluation |
| 10/04/2001 | WO2001073400A1 Method and apparatus for determining fluid viscosity |
| 10/04/2001 | WO2001027432A3 Methods and apparatus for making measurements on fluids produced from underground formations |
| 10/04/2001 | EP1137862A2 Apparatus and method for well fluid sampling |
| 10/02/2001 | US6296066 Well system |
| 10/02/2001 | US6296056 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 10/02/2001 | US6295867 Geological sample sub |
| 09/27/2001 | WO2001020126A3 System for enhancing fluid flow in a well |
| 09/27/2001 | US20010023614 Monitoring of downhole parameters and tools utilizing fiber optics |
| 09/24/2001 | CA2342089A1 Method of early prediction of the risk of paraffin dirt during production and transportation |
| 09/20/2001 | WO2001069040A1 Acoustic sensor for fluid characterization |
| 09/20/2001 | WO2001069038A1 Methods for improving oil production |
| 09/19/2001 | CN2448924Y Downhole autoamtic control liquid sampling valve |
| 09/18/2001 | US6290000 Quantification of the characteristics of porous formations while drilling |
| 09/18/2001 | US6289714 Method for testing soil contamination, and probe therefor |
| 09/13/2001 | WO2001067068A2 Apparatus and method for continuous measurement of drilling fluid properties |
| 09/13/2001 | US20010020675 Wellbores utilizing fiber optic-based sensors and operating devices |
| 09/12/2001 | EP1131615A1 Method and system for extracting, analysing and measuring constituents transported by a bore fluid |
| 09/07/2001 | WO2001065060A1 Improving reservoir communication with a wellbore |
| 09/07/2001 | WO2000065199A8 Method and apparatus for continuously testing a well |
| 09/05/2001 | EP0975855B1 Method and apparatus which uses a combination of fluid injection and resistivity measurements |
| 09/04/2001 | US6283210 Proactive conformance for oil or gas wells |
| 08/30/2001 | WO2001063094A1 Hydrogen sulphide detection method and apparatus |
| 08/30/2001 | WO2001063093A1 Apparatus and method for controlling well fluid sample pressure |
| 08/30/2001 | WO2001062603A2 Integrated reservoir optimization |
| 08/30/2001 | CA2605860A1 Integrated reservoir optimization |
| 08/30/2001 | CA2602280A1 Integrated reservoir optimization |
| 08/30/2001 | CA2400796A1 Integrated reservoir optimization |