| 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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| 10/24/2007 | CN101059076A Casing resonant radial flexural modes in cement bond evaluation |
| 10/24/2007 | CN101059075A Method for forecasting slurry performance in emulating horizontal directional drilling construction and its experimental device |
| 10/23/2007 | US7284612 Controlling transient pressure conditions in a wellbore |
| 10/23/2007 | US7284604 Methods for measurement of a dimensional characteristic and methods of predictive modeling related thereto |
| 10/23/2007 | CA2440991C Method and apparatus to provide miniature formation fluid sample |
| 10/18/2007 | WO2007116008A1 Method for optimising the production of a cluster of wells |
| 10/18/2007 | WO2007116006A1 Method for production metering of oil wells |
| 10/18/2007 | US20070240514 Testing of bottomhole samplers using acoustics |
| 10/18/2007 | CA2645902A1 Method for optimising the production of a cluster of wells |
| 10/18/2007 | CA2645253A1 Method for production metering of oil wells |
| 10/17/2007 | CN200961480Y Non-invasive type capacitance oil medium sensor |
| 10/17/2007 | CN200961479Y Gamma logging device graduation device for density and thickness |
| 10/17/2007 | CN101054898A Electromagnetic wave logging tool coil supporting and pulling device |
| 10/17/2007 | CN101054897A Axial resolution determining device and system |
| 10/17/2007 | CN101054893A Dissection type packer |
| 10/16/2007 | US7283941 Computer system and method for modeling fluid depletion |
| 10/16/2007 | US7281579 Method for terminating or reducing water flow in a subterranean formation |
| 10/16/2007 | US7281422 Method for borehole conductivity profiling |
| 10/10/2007 | EP1552274B1 Borehole conductivity profiler |
| 10/10/2007 | CN200958366Y Fixed-depth soil driller |
| 10/10/2007 | CN101052781A Method and system for production metering of oil wells |
| 10/10/2007 | CN101050702A Measuring device and method for overcurrent type resonant sound spectrum multiple phase flow state test |
| 10/10/2007 | CN101050701A Non-intervention type capacitor oil medium sensor |
| 10/10/2007 | CN101050700A Electromagnetic wave logging instrument correcting method using high permeable magnetic material |
| 10/10/2007 | CN101050698A Logging unit repair test system and test unit |
| 10/10/2007 | CN100342119C System for detecting gas in a wellbore during drilling |
| 10/10/2007 | CN100342114C Single arm clamp piston of petroleum exploration device |
| 10/09/2007 | US7280952 Well planning using seismic coherence |
| 10/04/2007 | WO2007112175A2 Hydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments |
| 10/04/2007 | US20070227241 Downhole fluid characterization based on changes in acoustic properties with pressure |
| 10/03/2007 | EP1839052A1 Instrumentation probe for in situ measurement and testing of seabed |
| 10/03/2007 | CN200955390Y Inductive logging instrument |
| 10/03/2007 | CN200955389Y Micro-ball-shape digital focused logging instrument |
| 10/03/2007 | CN200955385Y Level well-logging protector |
| 10/03/2007 | CN200955378Y Full-bore low-resistance detection back-washing valve |
| 10/03/2007 | CN200954989Y Logging hoist-engine tension overload protection system |
| 10/02/2007 | CA2437103C Method and apparatus for determining downhole pressures during a drilling operation |
| 10/02/2007 | CA2256258C Swab test for determining relative formation productivity |
| 09/26/2007 | CN200952392Y Double-source drum electric releasing device |
| 09/26/2007 | CN101042049A Method for rapid tracking monitoring variation of oil production inpouring bacterium |
| 09/26/2007 | CN101042048A Complicated fault block fluvial facies reservoir oil water well using situation split system |
| 09/26/2007 | CN100339726C Method and apparatus for testing fluid speed and characters using NMR |
| 09/25/2007 | US7274993 Method for forming an optimum stochastic model of a heterogeneous underground zone, calibrated with dynamic data by parametrization of continuous distributions |
| 09/25/2007 | CA2394950C Three dimensional steerable system |
| 09/20/2007 | WO2007027683A3 Rotary coring device and method for acquiring a sidewall core from an earth formation |
| 09/20/2007 | WO2007020492B1 Spectral imaging for downhole fluid characterization |
| 09/20/2007 | US20070215385 Method to determine the concentration of deuterium oxide in a subterranean formation |
| 09/20/2007 | US20070215349 Downhole Formation Testing Tool |
| 09/20/2007 | US20070215348 System and method for obtaining formation fluid samples for analysis |
| 09/20/2007 | US20070215345 Method And Apparatus For Hydraulic Fracturing And Monitoring |
| 09/20/2007 | US20070214877 Method and apparatus for an optimal pumping rate based on a downhole dew point pressure determination |
| 09/20/2007 | DE102006013409A1 Ground water sample taking device, has control module with upper packer, and sensor unit with sensors for measuring current, temperature, conductivity, and redox potential at measuring point |
| 09/19/2007 | EP1834156A1 Temperature compensated strain measurement |
| 09/19/2007 | EP1597455B1 Radially adjustable downhole devices & methods for the same |
| 09/19/2007 | CN200949466Y Gas overflow type confluent-liquid umbrella |
| 09/19/2007 | CN200949464Y Multiple core pressure bearing plate |
| 09/19/2007 | CN200949462Y Compound logging instrument with lightning protection system |
| 09/19/2007 | CN101037941A Drilling type well wall coring device |
| 09/18/2007 | US7270179 Method for stimulation of liquid flow in a well |
| 09/13/2007 | WO2007054800A3 High pressure optical cell for a downhole optical fluid analyzer |
| 09/13/2007 | US20070209793 Apparatus and Method for Formation Evaluation |
| 09/12/2007 | CN200946507Y Digital focus high resolution dual laterolog instrument |
| 09/11/2007 | US7266983 Methods to detect formation pressure |
| 09/07/2007 | WO2007100564A2 A method and apparatus for a downhole spectrometer based on tunable optical filters |
| 09/07/2007 | WO2007070748A3 Method and apparatus for in-situ side-wall core sample analysis |
| 09/07/2007 | WO2007055794A3 Method for mechanical and capillary seal analysis of a hydrocarbon trap |
| 09/07/2007 | CA2643154A1 A method and apparatus for a downhole spectrometer based on tunable optical filters |
| 09/06/2007 | US20070205021 Method and apparatus for downhole sampling |
| 09/05/2007 | CN200943496Y Downhole high pressure electronic sampler |
| 09/05/2007 | CN200943495Y Intelligent fixed point electronic lock device based on satellite positioning technology |
| 09/05/2007 | CN200943491Y Intelligent locking type oil well pressure-testing sampler |
| 09/05/2007 | CN101029569A Neutron gamma logging instrument and method for determining residual-oil saturation degree |
| 09/05/2007 | CN101029568A Fluorescent logging method under non-toxic water system |
| 09/05/2007 | CN101029564A Method for continuouslly monitoring gas well-boring state under well |
| 09/04/2007 | US7263880 Method for measuring formation properties with a time-limited formation test |
| 08/30/2007 | WO2007098221A2 A method and apparatus for ion-selective discriminaion of fluids downhole |
| 08/30/2007 | US20070199695 Hydraulic Fracture Initiation and Propagation Control in Unconsolidated and Weakly Cemented Sediments |
| 08/30/2007 | US20070199691 Zone isolation assembly for isolating a fluid zone in a subsurface well |
| 08/30/2007 | CA2643372A1 A method and apparatus for ion-selective discrimination of fluids downhole |
| 08/30/2007 | CA2642523A1 Kerogen extraction from subterranean oil shale resources |
| 08/29/2007 | CN200940483Y Test and checking box for microball focus logging instrument |
| 08/29/2007 | CN101027457A Permanently eccentered formation tester |
| 08/29/2007 | CN101025084A Method for predetecting formation pore pressure under drill-bit while drilling |
| 08/28/2007 | US7261168 Methods and apparatus for using formation property data |
| 08/28/2007 | US7261167 Method and system for predicting performance of a drilling system for a given formation |
| 08/28/2007 | US7261161 Well testing system |
| 08/28/2007 | US7260985 Formation tester tool assembly and methods of use |
| 08/23/2007 | US20070198192 Systems and methods for well data compression |
| 08/23/2007 | US20070193741 Method and Apparatus For Testing And Treatment Of A Completed Well With Production Tubing In Place |
| 08/23/2007 | US20070193377 Single phase fluid sampling apparatus and method for use of same |
| 08/23/2007 | US20070193351 Method and apparatus for ion-selective discrimination of fluids downhole |
| 08/23/2007 | DE10162786B4 Verfahren zur Leistungsermittlung, Messvorrichtung und Leistungsprüfstand für einen Prüfling Method for determination of performance, measurement device and dynamometer measured for a sample |
| 08/22/2007 | CN101021570A Non-contact mine ground pressure observing and estimating method |
| 08/22/2007 | CN101021149A Well logging magnetic suspension turbine flowmeter |
| 08/21/2007 | US7258167 Method and apparatus for storing energy and multiplying force to pressurize a downhole fluid sample |
| 08/21/2007 | CA2465668C Well jet device for testing and studying formations and the operating method thereof |
| 08/16/2007 | WO2007091900A1 Logging tool for hydrocarbon-producing wells |
| 08/16/2007 | US20070187092 System and method for detecting pressure disturbances in a formation while performing an operation |
| 08/16/2007 | US20070186639 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit |
| 08/15/2007 | EP1817480A1 Core barrel capacity gauge |