| 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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| 03/25/2004 | US20040055745 Method and apparatus for combined NMR and formation testing for assessing relative permeability with formation testing and nuclear magnetic resonance testing |
| 03/18/2004 | WO2004022981A1 Operating method for a well jet device in horizontal well testing and development and well jet device for carrying out said method |
| 03/18/2004 | WO2004022905A1 Method, apparatus and system for pore pressure prediction in presence of dipping formations |
| 03/18/2004 | US20040050588 Method for measuring formation properties with a time-limited formation test |
| 03/18/2004 | US20040050548 Method and apparatus for well testing |
| 03/18/2004 | US20040050153 Methods to detect formation pressure |
| 03/18/2004 | CA2482457A1 Method, apparatus and system for pore pressure prediction in presence of dipping formations |
| 03/17/2004 | EP1397661A2 Method and apparatus for downhole fluid characterization using flxural mechanical resonators |
| 03/17/2004 | EP1397579A1 Method, system and tool for reservoir evaluation and well testing during drilling operations |
| 03/16/2004 | US6705398 Fracture closure pressure determination |
| 03/11/2004 | US20040049346 Method and device for determining the quality of an oil well reserve |
| 03/11/2004 | US20040045707 Method for determining sand free production rate and simultaneously completing a borehole |
| 03/11/2004 | US20040045706 Method for measuring formation properties with a time-limited formation test |
| 03/11/2004 | US20040045350 Chemical sensor for wellbore applications |
| 03/10/2004 | EP1396607A2 Method for measuring formation properties with a time-limited formation test |
| 03/09/2004 | US6702024 Dual energized hydroseal |
| 03/09/2004 | US6702017 Apparatus and method for well fluid sampling |
| 03/04/2004 | US20040043501 Monitoring reservoir conditions, estimating and quantifying concentrations of oil and gas in earth formations and determining operating and physical conditions of down hole tools |
| 03/04/2004 | DE10161607B4 Verfahren und Einrichtung zur Bestimmung und Beeinflussung der Rohölzusammensetzung bei der Rohölförderung Method and apparatus for determining and influencing the crude oil composition in crude oil production |
| 03/03/2004 | EP1394357A1 Method of estimating the volume ratio of gaz to oil (GOR) in the borehole fluids while drilling |
| 03/03/2004 | EP1394356A1 Method for characterising parameters of wells, well bottom zone and formation, and device for carrying out said method |
| 02/26/2004 | WO2002084065A3 Drilling head of a drilling device, particularly a wash drilling head of a horizontal drilling device |
| 02/26/2004 | US20040035607 Soil sample containment device and method |
| 02/26/2004 | US20040035199 Hydraulic and mechanical noise isolation for improved formation testing |
| 02/25/2004 | CN2604523Y Automatic electric degassing device |
| 02/24/2004 | US6695078 Large diameter sampler for gathering an undisturbed sample |
| 02/24/2004 | US6695075 Soil sampler |
| 02/24/2004 | US6695053 Bailer discharging device and method of using thereof |
| 02/24/2004 | CA2268104C Method of obtaining improved geophysical information about earth formations |
| 02/19/2004 | WO2002077613A3 Fluid property sensors |
| 02/19/2004 | US20040031318 Method and apparatus for determining downhole pressures during a drilling operation |
| 02/18/2004 | EP1389298A2 Determining optimal well locations from a 3d reservoir model |
| 02/18/2004 | EP1389263A1 A method of controlling the direction of propagation of injection fractures in permeable formations |
| 02/17/2004 | US6693553 Reservoir management system and method |
| 02/17/2004 | US6691779 Wellbore antennae system and method |
| 02/12/2004 | WO2004013415A1 Method and device for soil analysis |
| 02/12/2004 | US20040029739 Determining the pvt properties of a hydrocarbon reservoir fluid |
| 02/12/2004 | US20040026127 Method of coring crustal core sample, and antimicrobial polymeric gel and gel material used in the method |
| 02/12/2004 | US20040026125 Formation testing apparatus and method for optimizing draw down |
| 02/12/2004 | US20040026076 Method and system of fluid analysis and control in hydrocarbon well |
| 02/12/2004 | US20040025583 Method and apparatus for determining downhole pressures during a drilling operation |
| 02/11/2004 | EP1388615A1 Method and apparatus for soil examination |
| 02/10/2004 | US6688390 Formation fluid sampling apparatus and method |
| 02/10/2004 | US6688176 Single tube densitometer |
| 02/10/2004 | CA2047006C Method of determining the drilling conditions associated with the drilling of a formation with a drag bit |
| 02/05/2004 | WO2004011929A1 Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids |
| 02/05/2004 | WO2004011763A2 Mechanical bladder pump |
| 02/05/2004 | US20040020649 Method and apparatus for pressure controlled downhole sampling |
| 02/05/2004 | CA2494035A1 Mechanical bladder pump |
| 02/05/2004 | CA2493636A1 Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids |
| 02/04/2004 | CN2602162Y Oil well sampling device |
| 02/03/2004 | US6687660 Hydrocarbon reservoir testing |
| 01/28/2004 | CN1470739A Multi-frequency acoustic proe combined detection method of optical cable transmission signal and down-well instrument |
| 01/27/2004 | US6681872 In situ reactor |
| 01/22/2004 | WO2003050389A3 Apparatus and methods for downhole determination of characteristics of formation fluids |
| 01/22/2004 | US20040015295 Method of determining fluid flow |
| 01/22/2004 | US20040011525 Method and apparatus for MWD formation testing |
| 01/22/2004 | DE10255567B3 Probenentnahme aus tiefen Bohrungen Sampling from deep holes |
| 01/21/2004 | EP1381755A2 Drawdown apparatus and method for in-situ analysis of formation fluids |
| 01/21/2004 | CN1469028A Method and apparatus for sampling underground fluid |
| 01/15/2004 | US20040007665 Method and apparatus for a downhole flourescence spectrometer |
| 01/15/2004 | US20040007387 Smart-ultrasonic/sonic driller/corer |
| 01/15/2004 | US20040007058 Formation testing apparatus and method |
| 01/08/2004 | WO2004003343A1 System for detecting gas in a wellbore during drilling |
| 01/08/2004 | WO2004003330A2 Formation fluid sampling and hydraulic testing tool and packer assembly therefor |
| 01/08/2004 | WO2003089751A3 Method for improving drilling depth measurements |
| 01/08/2004 | WO2003072908A3 Low-flow groundwater sampling system |
| 01/08/2004 | US20040003657 Open hole formation testing |
| 01/08/2004 | CA2490275A1 System for detecting gas in a wellbore during drilling |
| 01/07/2004 | EP0916014B1 Apparatus and method for milling a hole in casing |
| 01/07/2004 | CN2597979Y Ring inserted fastening type soil sample tube |
| 01/06/2004 | US6672407 Method of drilling, analyzing and stabilizing a terrestrial or other planetary subsurface formation |
| 01/06/2004 | US6672386 Method for in-situ analysis of formation parameters |
| 01/06/2004 | US6672163 Acoustic sensor for fluid characterization |
| 01/06/2004 | US6672093 Downhole sorption cooling and heating in wireline logging and monitoring while drilling |
| 01/06/2004 | CA2306976C Method and apparatus for hydraulic fracturing analysis and design |
| 01/01/2004 | US20040000762 Equalizer valve |
| 01/01/2004 | US20040000636 Determining dew precipitation and onset pressure in oilfield retrograde condensate |
| 01/01/2004 | US20040000433 Method and apparatus for subsurface fluid sampling |
| 01/01/2004 | US20040000430 Iterative drilling simulation process for enhanced economic decision making |
| 01/01/2004 | US20040000400 Assessing downhole WBM-contaminated connate water |
| 01/01/2004 | US20040000193 Formation fluid sampling and hydraulic testing tool |
| 12/31/2003 | WO2004001352A2 Apparatus and method of monitoring and signaling for downhole tools |
| 12/30/2003 | US6670605 Method and apparatus for the down-hole characterization of formation fluids |
| 12/30/2003 | US6668924 Reduced contamination sampling |
| 12/25/2003 | US20030234120 Drilling formation tester, apparatus and methods of testing and monitoring status of tester |
| 12/25/2003 | US20030233873 Apparatus and method of monitoring and signaling for downhole tools |
| 12/24/2003 | CN1131925C Drilling appts. and method of drilling through materials |
| 12/23/2003 | CA2270757C Nuclear magnetic resonance logging with azimuthal resolution |
| 12/18/2003 | WO2003104612A1 In situ reactor |
| 12/18/2003 | WO2003104602A2 Method for in-situ analysis of formation parameters |
| 12/18/2003 | WO2003083249A3 Apparatus for sampling drill hole cuttings |
| 12/18/2003 | US20030231017 Formation-based interpretation of NMR data for carbonate reservoirs |
| 12/18/2003 | US20030230893 Spoolable composite coiled tubing connector |
| 12/18/2003 | US20030230139 Ultrasonic cylindrical resonator to facilitate bubble point pressure measurement |
| 12/17/2003 | CN1462329A Method for characterising parameters of wells, well bottom zone and formation, and device for carrryingout said method |
| 12/17/2003 | CN1131416C Strain monitoring system |
| 12/16/2003 | US6662644 Formation fluid sampling and hydraulic testing tool |
| 12/11/2003 | WO2003102628A1 Method and apparatus for a downhole fluorescence spectrometer |
| 12/11/2003 | WO2003102551A1 Apparatus and method for analyzing well fluid sag |