| 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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| 12/11/2013 | CN103437744A Oilfield ground and underground integrated oil extraction intelligent control device |
| 12/11/2013 | CN103437382A Slurry sampling device |
| 12/11/2013 | CN102140914B Underground debris sampler |
| 12/10/2013 | US8606523 Method to determine current condensate saturation in a near-wellbore zone in a gas-condensate formation |
| 12/10/2013 | US8606522 Method to determine current gas saturation in a near-wellbore zone in a volatile oil formation |
| 12/10/2013 | CA2522864C Device for preparing a fluid, in particular a drilling fluid, process for preparing it and all of the related analyses |
| 12/10/2013 | CA2502598C Openhole perforating |
| 12/08/2013 | CA2818065A1 Method and arrangement for preventing hydrocarbon based deposition |
| 12/05/2013 | WO2013180752A1 Obtaining wettability from t1 and t2 measurements |
| 12/05/2013 | WO2013154360A3 Water leak-detecting ground water pressure testing apparatus |
| 12/05/2013 | US20130325351 Smart Flowback Alarm to Detect Kicks and Losses |
| 12/05/2013 | US20130319657 Method for controlling the trajectory of a hydraulic fracture in strata-containing natural fractures |
| 12/05/2013 | US20130319102 Downhole Tools and Oil Field Tubulars having Internal Sensors for Wireless External Communication |
| 12/04/2013 | EP2669716A1 Apparatus and methods for providing information about one or more subterranean variables |
| 12/04/2013 | EP2669465A2 Apparatus and methods of flow testing formation zones |
| 12/04/2013 | EP2668525A2 Multi-phase region analysis method and apparatus |
| 12/04/2013 | EP2668370A2 Method and apparatus for evaluating fluid sample contamination by using multi sensors |
| 12/04/2013 | EP2668369A2 Apparatus for a fluid transport pipeline, related method and system |
| 12/04/2013 | CN203321515U Recoverable type full-automatic sub-glacial environment detector |
| 12/04/2013 | CN203321514U Coring barrel with propellant |
| 12/04/2013 | CN203321503U Coiled plate type roller |
| 12/04/2013 | CN203321470U CT scanning system based on top gas injection multi-angle displacement process |
| 12/04/2013 | CN203321437U Novel antitheft sampling valve |
| 12/04/2013 | CN103422853A Method and device for determining water saturation of stratum |
| 12/04/2013 | CN103422852A Method of conversion and comparison for gas-logging values of different wells |
| 12/04/2013 | CN102094639B Method for correcting natural gamma ray spectral logging of barite mud well |
| 12/04/2013 | CN101617101B Automated field development planning of well and drainage locations |
| 12/04/2013 | CN101418685B Neutron logging tool having source and target with deuterium-tritium gas admixture |
| 12/03/2013 | US8596384 Reducing differential sticking during sampling |
| 12/03/2013 | US8596383 Method for detecting hydrocarbon zones in a geological formation |
| 12/03/2013 | CA2747806C Apparatus and methods for gas volume retained coring |
| 12/03/2013 | CA2747368C Permanent downhole deployment of optical sensors |
| 11/28/2013 | WO2013177165A1 Method for operating formation measuring instrument using sea floor drilling apparatus |
| 11/28/2013 | WO2013176684A1 System and method of mixing a formation fluid sample obtained in a downhole sampling chamber |
| 11/28/2013 | WO2013176683A1 Method of mixing a formation fluid sample obtained in a downhole sampling chamber |
| 11/28/2013 | US20130315032 Methods and Systems for Deploying Seismic Devices |
| 11/28/2013 | US20130312511 Method and apparatus for automatically testing high pressure and high temperature sedimentation of slurries |
| 11/28/2013 | US20130312481 Fluid properties including equation of state modeling with optical constraints |
| 11/28/2013 | DE112011101504T5 Verfahren und Vorrichtung zur Messung der Bodenmechanischen Eigenschaften Method and apparatus for measuring soil mechanical properties |
| 11/27/2013 | EP2666003A1 System and method for coupling an extendable element to an actuator |
| 11/27/2013 | CN203308459U Vacuum sampling device for single-hole and multi-layer well |
| 11/27/2013 | CN203308434U Built-in anti-freezing anti-theft sampler |
| 11/27/2013 | CN103410507A Focusing PACKER device |
| 11/27/2013 | CN103410506A Gas spring assembly and formation fluid sampler |
| 11/27/2013 | CN103410505A Gear driven oil test burner boom |
| 11/27/2013 | CN103410504A Method and device for determining true resistivity of horizontal well/highly-deviated well |
| 11/27/2013 | CN103410502A Method for acquiring three-dimensional permeability fields of netted fracture-cave oil reservoirs |
| 11/27/2013 | CN102383788B Underground reservoir porosity measurement method during drilling |
| 11/27/2013 | CN102042014B Multistage-cylinder near well-bore zone shearing simulation device with three layers of compacted sand bodies |
| 11/27/2013 | CN102042013B Near wellbore area cutting simulation device for combined cylinder body with three layers of compacted sand bodies |
| 11/27/2013 | CN101798912B Device and method for regulating and controlling water content of production fluid of underground layering of oil field |
| 11/23/2013 | CA2778094A1 Wireless data pipeline |
| 11/21/2013 | US20130311099 Method and apparatus for evaluating fluid sample contamination by using multi sensors |
| 11/21/2013 | US20130306649 Modular appartus for production testing |
| 11/21/2013 | US20130306309 Single Packer System For Fluid Management In A Wellbore |
| 11/21/2013 | US20130306307 Methods And Apparatus To Sample Heavy Oil In A Subterranean Formation |
| 11/20/2013 | EP2663738A2 System and apparatus for modeling the behavior of a drilling assembly |
| 11/20/2013 | EP2663735A2 Rotational test valve with tension reset |
| 11/20/2013 | EP2663731A2 Rotational wellbore test valve |
| 11/20/2013 | CN203296772U Practical petroleum drilling probe |
| 11/20/2013 | CN203296759U Pipe column device for perforating and testing of HTHP ultra-deep well |
| 11/20/2013 | CN103403294A Dispersing separated hydrocarbon gas into separated oil during surface well testing for improved oil mobility |
| 11/20/2013 | CN103397879A Reservoir parameter measurement system and method based on streaming potential |
| 11/20/2013 | CN103397878A Acoustic logging-while-drilling device of variable-diameter sound insulation structure |
| 11/20/2013 | CN103397875A Method for detecting bed boundary |
| 11/20/2013 | CN103397874A Experimental apparatus used for chemical sand control and consolidation evaluation |
| 11/20/2013 | CN103397872A Shaft simulation device of multi-branch flow guide moderate sand outlet well |
| 11/20/2013 | CN103397852A Field joint for downhole tool and downhole tool |
| 11/20/2013 | CN101942992B Method for predicting pore pressure of regional high-pressure saltwater layer by utilizing curvature of face of geologic structure |
| 11/19/2013 | US8589135 Systems, computer implemented methods, and computer readable program products to compute approximate well drainage pressure for a reservoir simulator |
| 11/19/2013 | US8584748 Elongated probe for downhole tool |
| 11/19/2013 | CA2572999C Sensor system |
| 11/19/2013 | CA2558374C Improved ball penetrometer for soft soils testing |
| 11/19/2013 | CA2506883C Method and system for integrated reservoir and surface facility networks simulations |
| 11/14/2013 | WO2013169230A1 Systems and methods for cleaning a well face during formation testing operations |
| 11/14/2013 | WO2013169224A1 Formation environment sampling apparatus, systems, and methods |
| 11/14/2013 | WO2012164524A3 Acoustic triggering devices for multiple fluid samplers and methods of making and using same |
| 11/14/2013 | US20130304385 Holding tank monitoring system |
| 11/13/2013 | CN203289329U Power system of cable formation tester for petroleum logging |
| 11/13/2013 | CN203285435U Casing pipe gas fixed-point on-line monitoring system |
| 11/13/2013 | CN203285434U Logging instrument and system |
| 11/13/2013 | CN203285433U Novel reservoir stratum two-dimensional heterogeneous physical model experimental device |
| 11/13/2013 | CN203285425U Clamp holder |
| 11/13/2013 | CN103392053A Rotational wellbore test valve |
| 11/13/2013 | CN103388473A Method and system for eliminating direct wave interference in acoustic logging, and acoustic logging instrument |
| 11/13/2013 | CN102359372B Horizontal sidewall contact device |
| 11/13/2013 | CN102346806B High-water-cut oil field layer recombination scheme selection method and high-water-cut oil field layer recombination scheme selection system |
| 11/13/2013 | CN102305061B Method for explaining saturation of multiphase fluid |
| 11/12/2013 | US8579027 Multi-functional completion tool |
| 11/07/2013 | WO2013165747A1 Sampling assembly for a well |
| 11/07/2013 | WO2013009512A3 Method for simulating fractional multi-phase/multi-component flow through porous media |
| 11/07/2013 | US20130292112 Composition and method for locating productive rock fractures for fluid flow |
| 11/06/2013 | EP2659254A1 Analysis of a fluid flowing in a pipe |
| 11/06/2013 | CN203276998U 6in ceramic receiving and transmitting coil framework |
| 11/06/2013 | CN203271736U Deep well crude oil sample sampling device |
| 11/06/2013 | CN203271735U Three-dimensional relative permeability simulator |
| 11/06/2013 | CN203271734U Novel mine ground-stress measuring device |
| 11/06/2013 | CN203271733U Testing device used for evaluating stability of well wall in gas drilling process |
| 11/06/2013 | CN203271720U Outward relief type pressure relief system for well logging |
| 11/06/2013 | CN203271609U Sensing logging instrument and pressure-bearing joint for mud resistivity survey |