| 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) |
|---|
| 04/06/2011 | EP2304175A2 Tool and method for evaluating fluid dynamic properties of a cement annulus surrounding a casing |
| 04/06/2011 | EP2304174A1 Downhole measurement of formation characteristics while drilling |
| 04/06/2011 | CN201786357U Overflow type sampler |
| 04/06/2011 | CN201786356U Automatic compact device of sand-filling tube model for physical simulation |
| 04/06/2011 | CN201786355U Selective chemical plugging simulating device for gravel packed well |
| 04/06/2011 | CN102003177A Hydrogeological parameter observation instrument for underground single drill hole |
| 04/06/2011 | CN102003176A Quantitative test method for residual polymer in polymer flooding reservoir rocks |
| 04/06/2011 | CN102003171A Calibrating device of three-dimensional induction logger |
| 04/05/2011 | CA2716428A1 Method, system and apparatus for modeling production system network uncertainty |
| 03/31/2011 | WO2011037586A1 Compression assembly and method for actuating downhole packing elements |
| 03/31/2011 | WO2011037584A1 Anchor assembly and method for anchoring a downhole tool |
| 03/31/2011 | WO2011035377A1 Sample collection apparatus |
| 03/30/2011 | EP1982046B1 Methods, systems, and computer-readable media for real-time oil and gas field production optimization using a proxy simulator |
| 03/30/2011 | CN201780248U Viscosity and density intelligent comprehensive test instrument |
| 03/30/2011 | CN201778819U Large-area suction opening probe structure of formation tester |
| 03/30/2011 | CN201778811U Oil over-annulus logging top-and-bottom pulley oil-scraping counting four-functional device |
| 03/30/2011 | CN201778808U Oil well zonal testing device |
| 03/30/2011 | CN201778804U Core test block used for testing properties of drilling liquid |
| 03/30/2011 | CN201778672U Sealing joint body of neutron generator for petroleum logging |
| 03/30/2011 | CN101999027A Sonic drill bit for core sampling |
| 03/30/2011 | CN101995365A Vibrating wire viscometers |
| 03/30/2011 | CN101994510A Automatic sampling device of oil well |
| 03/30/2011 | CN101435750B Non-interfering type deep sea hydrate probe boring sampling apparatus |
| 03/29/2011 | US7913775 Subsurface formation core acquisition system using high speed data and control telemetry |
| 03/29/2011 | US7913774 Modular connector and method |
| 03/29/2011 | US7913556 Methods and apparatus to determine the compressibility of a fluid |
| 03/29/2011 | US7913555 Tubing expansion |
| 03/29/2011 | US7913554 Method and apparatus for balanced pressure sampling |
| 03/29/2011 | CA2457672C Downhole nmr processing |
| 03/24/2011 | WO2011035131A2 Tdem forward focusing system for downhole use |
| 03/24/2011 | WO2011034542A1 Downhole temperature probe array |
| 03/24/2011 | WO2010118119A3 Gamma ray generator |
| 03/24/2011 | WO2009155268A3 Positive sidewall core sample identification system |
| 03/24/2011 | US20110067860 System and method for obtaining formation fluid samples for analysis |
| 03/23/2011 | EP1506344B1 Method for determining, by strata, the reserve quality of an oil well |
| 03/23/2011 | CN201771490U Heavy oil sampler |
| 03/23/2011 | CN201771489U Acoustic variable density logging instrument |
| 03/23/2011 | CN201771487U Direction adjusting sub for combination logging |
| 03/23/2011 | CN201771438U Split type cambered surface triangle drilling rod for mining |
| 03/23/2011 | CN101988380A Method for constructing oil reservoir oil displacement microbial community to improve crude oil recovery ratio |
| 03/22/2011 | CA2447312C Methods and apparatus for rapidly measuring pressure in earth formations |
| 03/17/2011 | WO2011030243A1 Methods and apparatus for characterization of petroleum fluid employing analysis of high molecular weight components |
| 03/17/2011 | US20110066380 Subsurface reservoir analysis based on fluid injection |
| 03/17/2011 | US20110061935 Drilling wells in compartmentalized reservoirs |
| 03/17/2011 | US20110061862 Instrumented swellable element |
| 03/17/2011 | CA2772506A1 Methods and apparatus for characterization of petroleum fluid employing analysis of high molecular weight components |
| 03/16/2011 | CN201763329U Digital spectrometry logging tool |
| 03/16/2011 | CN201763328U Compensation neutron logger |
| 03/16/2011 | CN201763327U Digital acoustic logger |
| 03/16/2011 | CN201763326U Multi-medium coupling device for stratum simulated experiment |
| 03/16/2011 | CN201763325U Vehicle-mounted ground testing system for oil and gas field |
| 03/16/2011 | CN201763324U Sampler |
| 03/16/2011 | CN201763316U Micro-ball well logger |
| 03/16/2011 | CN201763315U Borehole trajectory remote real-time tracking system |
| 03/16/2011 | CN201763313U Calibrating device for pulsed neutron logging tool |
| 03/16/2011 | CN201763297U DST test-well automatic switcher |
| 03/16/2011 | CN101514624B Embedded oilwell parameter real-time acquisition system |
| 03/15/2011 | CA2445173C In situ recovery from a tar sands formation |
| 03/15/2011 | CA2441537C Mitigating risk by using fracture mapping to alter formation fracturing process |
| 03/10/2011 | WO2011027137A1 In-borehole gas monitor apparatus and method comprising a voc concentration analyser and a voc collector |
| 03/10/2011 | CA2772744A1 In-borehole gas monitor apparatus and method comprising a voc concentration analyser and a voc collector |
| 03/09/2011 | EP2292895A2 A device and method for analyzing light chemical compounds |
| 03/09/2011 | EP2291644A1 Method and apparatus for intensifying ore prospecting |
| 03/09/2011 | CN201757686U Hydraulic fracturing crustal stress measuring apparatus |
| 03/09/2011 | CN201756957U Controller of well measuring winch |
| 03/09/2011 | CN101984217A Core pretreatment method for fractured reservoir damage evaluation |
| 03/08/2011 | US7901555 Electro-chemical sensor |
| 03/08/2011 | US7900701 In situ combustion in gas over bitumen formations |
| 03/08/2011 | CA2714165A1 Dynamic shape approximation |
| 03/08/2011 | CA2523768C Method and apparatus for testing and treatment of a completed well with production tubing in place |
| 03/03/2011 | WO2011025471A1 Automated hydrocarbon reservoir pressure estimation |
| 03/03/2011 | WO2010144546A3 Method of determining parameters of a layered reservoir |
| 03/03/2011 | WO2010135636A3 Apparatus and method for modeling well designs and well performance |
| 03/03/2011 | WO2009142873A8 Downhole measurement of formation characteristics while drilling |
| 03/03/2011 | US20110054796 Method for calculating the ratio of relative permeabilities of formation fluids and wettability of a formation downhole, and a formation testing tool to implement the same |
| 03/03/2011 | US20110048700 Apparatus and method for fluid property measurements |
| 03/02/2011 | EP2290349A1 Vibrating helical spring sensors and methods to operate the same |
| 03/02/2011 | EP2288778A2 Sonic drill bit for core sampling |
| 03/02/2011 | EP2032795B1 Device for channeling solids and fluids within a reverse circulation drill |
| 03/02/2011 | EP1389298B1 Determining optimal well locations from a 3d reservoir model |
| 03/01/2011 | US7899658 Method for evaluating and improving drilling operations |
| 03/01/2011 | US7899657 Modeling in-situ reservoirs with derivative constraints |
| 03/01/2011 | US7896578 Mapping of contaminants in geologic formations |
| 03/01/2011 | US7896105 Method of drilling and production hydrocarbons from subsurface formations |
| 03/01/2011 | US7896071 Method for continous downhole fluid release and well evaluation |
| 03/01/2011 | CA2713502A1 Maximum entropy application methods and systems |
| 03/01/2011 | CA2694230C Method and system for cleat characterization in coal bed methane wells for completion optimization |
| 02/26/2011 | CA2713603A1 Method of managing a petroleum storage tank on the basis of an optimized history matching |
| 02/24/2011 | WO2010151661A3 Sampling skid for subsea wells |
| 02/24/2011 | US20110042143 Method and apparatus for intensifying ore prospecting |
| 02/24/2011 | US20110042089 Openhole perforating |
| 02/24/2011 | US20110042078 Viscosity reducer for water-based muds |
| 02/24/2011 | US20110042070 Fluid density from downhole optical measurements |
| 02/23/2011 | EP2286061A2 Formation treatment evaluation |
| 02/22/2011 | US7891417 Completion apparatus for measuring streaming potentials and determining earth formation characteristics |
| 02/17/2011 | WO2011020017A2 Method of measuring multi-phase fluid flow downhole |
| 02/16/2011 | CN201749092U X-ray fluorescence element analysis device and logging instrument thereof |
| 02/16/2011 | CN201747366U Slurry and mud cake resistivity tester |
| 02/16/2011 | CN201747365U Solid-liquid two-phase variable mass flow analogue system of complex structure well borehole |
| 02/16/2011 | CN201747364U Interval transit time curve reconstruction equipment |