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 47 - Survey of boreholes or wells
Patents for E21B 47 - Survey of boreholes or wells (31,352)
12/2010
12/16/2010WO2010144700A2 Method and apparatus for high resolution sound speed measurements
12/16/2010WO2010144546A2 Method of determining parameters of a layered reservoir
12/16/2010WO2010144538A2 Drill bit with weight and torque sensors
12/16/2010WO2010144244A2 Sending a seismic trace to surface after a vertical seismic profiling while drilling measurement
12/16/2010WO2010143993A1 Down-hole jet equipment for logging and development of horizontal wells
12/16/2010WO2010143139A2 Sensor assembly
12/16/2010WO2010142328A1 Tracer simulation tool and method for simulating tracers in sub-surface reservoirs.
12/16/2010WO2010118876A3 Multiple stage mechanical drift tool
12/16/2010WO2010096653A3 Multi-station analysis of magnetic surveys
12/16/2010WO2009086279A3 Acoustic measurements with downhole sampling and testing tools
12/16/2010WO2009023698A3 Downhole gas detection in drilling muds
12/16/2010US20100314110 Method of treating a subterranean formation using a rheology model for fluid optimization
12/16/2010US20100314108 Dual-Function Nano-Sized Particles
12/16/2010US20100314107 Method and device for transferring signals within a well
12/16/2010US20100314106 Low cost rigless intervention and production system
12/16/2010US20100314103 Method and device for maintaining sub-cooled fluid to esp system
12/16/2010US20100314102 Method of investigation of oil and gas-producing wells
12/16/2010US20100314096 Routing an electrical signal past a downhole connection used for semi stiff wellbore intervention rod
12/16/2010US20100313647 Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids
12/16/2010US20100313646 System and Method for Associating Time Stamped Measurement Data with a Corresponding Wellbore Depth
12/16/2010CA2766764A1 Down-hole jet equipment for logging and development of horizontal wells
12/16/2010CA2765528A1 Method and apparatus for high resolution sound speed measurements
12/16/2010CA2764561A1 Sensor assembly
12/15/2010EP2260949A2 Single point contact acoustic transmitter
12/15/2010EP2260948A2 Single point contact acoustic transmitter
12/15/2010EP2260947A2 Single point contact acoustic transmitter
12/15/2010EP2260176A2 Monitoring downhole conditions with drill string distributed measurement system
12/15/2010EP1913231B1 Interface and method for wellbore telemetry system
12/15/2010CN201671652U Explosion-proof wellhead apparatus
12/15/2010CN201671624U Device for utilizing GPRS to transmit oil well data
12/15/2010CN201671623U Leakage-finding water exclusion production string for horizontal wells
12/15/2010CN201671622U Coal mine cover rock water guide slit band uphole observation instrument
12/15/2010CN201671621U Balance nipple wire-passing structure
12/15/2010CN201671620U Down-hole monitoring device
12/15/2010CN201671619U Drilling horizontal penetration device for measuring damage characteristics ground stress parameters of rocks
12/15/2010CN201671618U Multi-layer oil well sand control simulation test device
12/15/2010CN201671617U Oil-water separation metering device
12/15/2010CN201671616U Side direction electrode system of petroleum logger
12/15/2010CN201671615U Weighing type oil-well metering separator
12/15/2010CN201671614U Multifunctional simulation test box for petroleum well logging
12/15/2010CN201671613U Glass steel insulated short joint
12/15/2010CN201671612U Nonmagnetic rapid lifting device
12/15/2010CN201671605U Injection-production simulator for depleted oil-gas reservoir and aquifer gas storage
12/15/2010CN201671588U Pressure measuring hole sealing apparatus for downward long hole
12/15/2010CN201671577U Well flushing quality monitoring device
12/15/2010CN201671552U Depth marking ring of oil well casing
12/15/2010CN1769644B Kick warning system using high frequency fluid mode in a borehole
12/15/2010CN1690359B Method and apparatus and program storage device for front tracking in hydraulic fracturing simulators
12/15/2010CN101915966A Downhole optical cable connecting and protecting device
12/15/2010CN101915935A Fiber laser downhole geophone
12/15/2010CN101915094A Continuous monitoring system of overburden rock displacement in ore bed mining process and structuring method thereof
12/15/2010CN101915090A System and method for monitoring sand production rate of oil-gas well
12/15/2010CN101915089A Liquid feed device for simulating oil deposit flow
12/15/2010CN101915088A Method and device for generating oil migration path
12/15/2010CN101915082A Method for removing blockage of oil-water well through magnetic positioning pulse acidification
12/15/2010CN101915077A Pressure and the output self-adaptation measurement and control system of electric pump producing well
12/15/2010CA2707236A1 Formation coring apparatus and methods
12/14/2010US7852232 Downhole tool adapted for telemetry
12/14/2010US7849934 Method and apparatus for collecting drill bit performance data
12/14/2010US7849920 System and method for optimizing production in a well
12/14/2010CA2628766C Downhole array and assembly thereof
12/14/2010CA2552294C Methods and apparatus for optimizing well production
12/14/2010CA2463104C In situ production of a blending agent from a hydrocarbon containing formation
12/09/2010WO2010141407A2 Borehole compensated resistivity logging tool having an asymmetric antenna spacing
12/09/2010WO2010141287A2 Wireless transmission system and system for monitoring a drilling rig operation
12/09/2010WO2010141282A2 System and method for estimating velocity of a downhole component
12/09/2010WO2010141004A1 Guide wire for ranging and subsurface broadcast telemetry
12/09/2010WO2010140032A2 Use of encapsulated tracers
12/09/2010US20100309750 Sensor Assembly
12/09/2010US20100307825 Excavation device and profile analyses of the excavation itself and associated method
12/09/2010US20100307745 Use of encapsulated tracers
12/09/2010US20100307744 Use of encapsulated chemical during fracturing
12/09/2010US20100307743 Method of determining parameters of a layered reservoir
12/09/2010US20100307742 Method of determining and utilizing high fidelity wellbore trajectory
12/09/2010US20100307741 Tool for downhole formation evaluation
12/09/2010US20100307740 Methods for allocating commingled oil production
12/09/2010DE102010014415A1 Device i.e. geothermal-measurement chain, for measuring underground temperature for long-term observation of geothermal plant, has hollow body inserted into another hollow body or bed filling out former body and/or latter body
12/09/2010CA2761955A1 Wireless transmission system and system for monitoring a drilling rig operation
12/08/2010EP2258924A2 Device for monitoring a drilling or coring operation and installation comprising such a device
12/08/2010EP2258923A2 Device for monitoring a drilling or coring operation and installation comprising such a device
12/08/2010EP2258922A2 Device for monitoring a drilling or coring operation and installation comprising such a device
12/08/2010CN201666148U Downhole propping rod of sound or television logging instrument with quick-change connector
12/08/2010CN201666147U Three-dimensional physical simulation device main body
12/08/2010CN201666146U Physical testing model testing system for evaluating sand prevention techniques for vertical wells
12/08/2010CN201666138U Water-injection gas-exhaustion well sealing device of coal bed gas well
12/08/2010CN201666117U Novel screw drill tool comprising wired assembly for testing while drilling
12/08/2010CN1930920B Extracting and processing hydrocarbon-bearing formations
12/08/2010CN1869400B Double-induction resistivity measuring instrument during drilling
12/08/2010CN1676874B Well deflection and position gamma measuring nistrument during drilling
12/08/2010CN101908693A Downhole sensor interface
12/08/2010CN101906966A Method and device for forecasting reservoir yield
12/08/2010CN101906964A Logging detection system for detecting light hydrocarbon component content of drilling fluid
12/08/2010CN101906963A Method for determining saturation by using C/O and formation macro capture cross-section intersecting technique
12/08/2010CN101906962A Mechanical type tubing collar detection device
12/08/2010CN101906961A Monitoring method of oil extraction process of oil well
12/08/2010CN101906960A Wire rope-free jointing device of water injection well measurement adjuster
12/08/2010CN101906959A One-way cooling device of down-hole drilling tester
12/08/2010CN101906958A Unattended digital multi-well automatic metering device and method
12/08/2010CN101906957A Temperature control method and device for subsurface measuring device
12/08/2010CN101305187B System and method for optimizing down-hole fluid yield
1 ... 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 ... 314