Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › 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
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)
09/2003
09/11/2003US20030167834 Formation tester pretest using pulsed flow rate control
09/10/2003EP0839255B1 Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing
09/10/2003EP0777813B1 Formation isolation and testing apparatus and method
09/09/2003US6615917 Computer controlled injection wells
09/04/2003WO2003072908A2 Low-flow groundwater sampling system
09/04/2003US20030164038 Acoustic sensor for fluid characterization
09/03/2003EP1339951A2 Method and device for determining the quality of an oil well reserve
09/02/2003US6612382 Iterative drilling simulation process for enhanced economic decision making
08/2003
08/27/2003EP1068425B1 Drillstring with stabilisers for re-entering a primary wellbore
08/26/2003US6611763 Method of early predicting paraffin deposition risks during production and transport
08/26/2003US6609569 Downhole fluid sampler
08/26/2003US6609568 Closed-loop drawdown apparatus and method for in-situ analysis of formation fluids
08/21/2003US20030155152 Method of conducting in situ measurements of properties of a reservoir fluid
08/19/2003US6609067 Real-time method for maintaining formation stability and monitoring fluid-formation interaction
08/19/2003US6607044 Three dimensional steerable system and method for steering bit to drill borehole
08/14/2003WO2003067018A2 Well system
08/14/2003US20030150263 System and method for stress and stability related measurements in boreholes
08/14/2003US20030150262 Acoustic sensor for fluid characterization
08/14/2003CA2755094A1 Well system
08/13/2003EP1335108A2 Apparatus and method for determining a drilling mode to optimize formation evaluation measurements
08/13/2003CN1117918C Apparatus and method for determining drilling mode to optimize formation evaluation measurements
08/07/2003US20030145988 Method for validating a downhole connate water sample
08/07/2003US20030145987 Measuring the in situ static formation temperature
08/07/2003US20030145652 Metal pad for downhole formation testing
07/2003
07/31/2003WO2003038287A8 Well jet device for testing and studying formations and the operating method thereof
07/31/2003US20030141055 Drilling formation tester, apparatus and methods of testing and monitoring status of tester
07/30/2003EP0910725B1 Wellbores utilizing fiber optic-based sensors and operating devices
07/30/2003CN1116498C Device, probe and method for measuring parameter of underground rock
07/29/2003US6598687 Three dimensional steerable system
07/29/2003US6598682 Reservoir communication with a wellbore
07/24/2003WO2003012434A3 Variable depth automated dynamic water profiler
07/17/2003US20030135446 Contingent convertible financial instruments
07/17/2003US20030135436 Methods and systems for offering and servicing financial instruments
07/17/2003US20030134426 Hydrogen sulphide detection method and apparatus
07/17/2003US20030131990 Wellbores utilizing fiber optic-based sensors and operating devices
07/10/2003WO2003056498A1 Method of load and failure prediction of downhole liners and wellbores
07/10/2003WO2003056132A1 Underwater soil survey apparatus and method
07/10/2003US20030127230 Method for formation pressure control while drilling
07/09/2003EP1325310A2 Methods and apparatus for downhole fluids analysis
07/09/2003EP0977932B1 A method and an apparatus for use in production tests, testing an expected permeable formation
07/08/2003US6588266 Monitoring of downhole parameters and tools utilizing fiber optics
07/03/2003WO2003054502A1 Method for the detection of performance, measuring device, and performance test stand for a test piece
07/02/2003EP1322837A2 Improved well testing system
07/02/2003CN2558768Y Directional liquid holding coring tool
07/01/2003US6585045 Formation testing while drilling apparatus with axially and spirally mounted ports
07/01/2003US6585044 Method, system and tool for reservoir evaluation and well testing during drilling operations
07/01/2003US6584833 Apparatus and method for analyzing well fluid sag
06/2003
06/25/2003EP1320659A1 Method and system for wireless communications for downhole applications
06/24/2003US6581685 Method for determining formation characteristics in a perforated wellbore
06/24/2003US6581455 Modified formation testing apparatus with borehole grippers and method of formation testing
06/19/2003WO2003050844A1 Method for measuring adsorbed and interstitial fluids
06/19/2003WO2003050389A2 Apparatus and methods for downhole determination of characteristics of formation fluids
06/19/2003US20030112150 Production profile determination and modification system
06/19/2003US20030111227 Dual energized hydroseal
06/18/2003EP1319116A1 Evaluation of multilayer reservoirs
06/18/2003CN2556365Y Annulus logging collector umbrella for pumping well
06/12/2003WO2003048525A1 Method for formation pressure control while drilling
06/12/2003WO2003048513A1 Method for terminating or reducing water flow in a subterranean formation
06/12/2003US20030106995 Method for measuring absorbed and interstitial fluids
06/12/2003US20030106993 Apparatus and methods for downhole determination of characteristics of formation fluids
06/12/2003CA2468732A1 Method for formation pressure control while drilling
06/11/2003CN2555398Y Multi-current tester
06/11/2003CN1423030A Method and apparatus for determining oil-layer characteristic
06/10/2003US6575242 Method and an apparatus for use in production tests, testing an expected permeable formation
06/05/2003WO2003046485A1 Production metering and well testing system
06/04/2003EP1316674A1 Protector for side-wall fluid tester
06/03/2003USRE38129 Phase change analysis in logging method
06/03/2003US6573716 Method and apparatus for tuning an NMR coil
06/03/2003US6571867 Apparatus for increasing the effective diameter of a wellbore
06/03/2003US6571605 Constant-head soil permeameter for determining the hydraulic conductivity of earthen materials
05/2003
05/29/2003US20030098156 Method and apparatus for determining reservoir characteristics
05/28/2003EP1313931A1 Method of determining fluid flow
05/28/2003CN1421009A Determining optimal well locations from 3D reservoir model
05/27/2003US6568487 Method for fast and extensive formation evaluation using minimum system volume
05/22/2003WO2003042899A1 A computer system and method for modeling fluid depletion
05/22/2003US20030094310 Three dimensional steerable system and method for steering bit to drill borehole
05/22/2003US20030094282 Downhole measurement apparatus and technique
05/22/2003US20030094040 Multi-probe pressure transient analysis for determination of horizontal permeability, anisotropy and skin in an earth formation
05/22/2003CA2466764A1 A computer system and method for modeling fluid depletion
05/21/2003CN1419677A Integrated reservoir optimization
05/15/2003US20030089526 Grondmonsternemer
05/15/2003US20030089498 Controlling transient underbalance in a wellbore
05/14/2003EP1309888A1 Apparatus and method for synchronized formation measurement
05/14/2003EP1309772A1 Formation testing apparatus with axially and spirally mounted ports
05/14/2003EP1112438B1 $i(IN SITU) BOREHOLE SAMPLE ANALYZING PROBE AND VALVED CASING COUPLER THEREFOR
05/13/2003US6561041 Production metering and well testing system
05/13/2003CA2149812C Treatment of contaminated water in clays etc.
05/08/2003WO2003038287A1 Well jet device for testing and studying formations and the operating method thereof
05/08/2003US20030085039 Downhole sorption cooling and heating in wireline logging and monitoring while drilling
05/08/2003US20030085035 Formation testing instrument having extensible housing
05/08/2003US20030084715 Method and apparatus for pore pressure monitoring
05/07/2003CN2549449Y Device for measuring strains of casing and formation by expansion of oil well cement ring
05/06/2003US6557632 Method and apparatus to provide miniature formation fluid sample
05/06/2003CA2101446C Well completion system
05/02/2003EP1306659A2 Single tube downhole densitometer
05/01/2003WO2003036044A1 Use of cutting velocities for real time pore pressure and fracture gradient prediction
05/01/2003US20030079875 Fracture closure pressure determination
04/2003
04/30/2003CN1415090A Method and program for simulating physical system using object-oriented programming
04/30/2003CN1107226C Method for fluoroscent logging of detritus
04/30/2003CN1107155C Non-cable near-distance dynamic parameters logging method for oil well
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