| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 05/16/2007 | CN2900895Y Connecting pin |
| 05/16/2007 | CN2900784Y Multiple core cable oil well layered test downhole device |
| 05/16/2007 | CN2900783Y Oil well level measurer |
| 05/16/2007 | CN2900782Y Device for producing large size artificial rock core for analogue drilling block |
| 05/16/2007 | CN2900781Y Electromagnetic wave path type radio measurer while drilling |
| 05/16/2007 | CN1965249A Surface real-time processing of downhole data |
| 05/16/2007 | CN1965248A Method for solving implicit reservoir simulation matrix equation |
| 05/16/2007 | CN1963146A Holder for high-temperature high-pressure glass microscopic model |
| 05/16/2007 | CN1963145A Multifactor composite sampling method for mechanical oil production well system |
| 05/16/2007 | CA2527364A1 Downhole communication |
| 05/15/2007 | US7218997 Controller system for downhole applications |
| 05/15/2007 | US7218572 Method of seismic source monitoring using modeled source signatures with calibration functions |
| 05/15/2007 | US7218244 Common interface architecture for horizontal directional drilling machines and walk-over guidance systems |
| 05/15/2007 | US7218116 Boring tool tracking/guiding system and method with unconstrained target location geometry |
| 05/15/2007 | US7216703 Method and apparatus for testing and treatment of a completed well with production tubing in place |
| 05/15/2007 | US7216702 Methods of evaluating undersaturated coalbed methane reservoirs |
| 05/15/2007 | US7216533 Methods for using a formation tester |
| 05/15/2007 | CA2556180C Method and apparatus for connecting a lateral branch liner to a main well bore |
| 05/15/2007 | CA2533839C Method of determining a cross-load on a mobile repair unit for a well |
| 05/15/2007 | CA2401940C Methods and apparatus for measuring flow velocity in a wellbore using nmr and applications using same |
| 05/15/2007 | CA2356793C Micro-switches for downhole use |
| 05/10/2007 | WO2007053419A2 Logging system, method of logging an earth formation and method of producing a hydrocarbon fluid |
| 05/10/2007 | WO2007052192A1 Method of monitoring fluid placement during stimulation treatments |
| 05/10/2007 | WO2007051915A2 Device for carrying out magnetic imagery of the part of the subsoil bordering the wall of an oil well |
| 05/10/2007 | US20070104030 Measurement while drilling bi-directional pulser operating in a near laminar annular flow channel |
| 05/10/2007 | US20070104027 Tool for measuring perforation tunnel depth |
| 05/10/2007 | US20070103158 Flux Plane Locating in an Underground Drilling System |
| 05/10/2007 | US20070102566 System And Method For Tracking And Communicating With A Boring Tool |
| 05/10/2007 | US20070102153 Screen and Method Having a Partial Screen Wrap |
| 05/10/2007 | CA2634142A1 Logging system, method of logging an earth formation and method of producing a hydrocarbon fluid |
| 05/10/2007 | CA2626075A1 Method of monitoring fluid placement during stimulation treatments |
| 05/09/2007 | CN2898300Y Telecommunication circuit for logging instrument |
| 05/09/2007 | CN2898299Y Combining unit with pressure-measuring and sampling functions accompanied with hydraulic pump |
| 05/09/2007 | CN2898298Y Pressure-bearing transfer connector at lower end for hydraulic propeller |
| 05/09/2007 | CN2898297Y Bearing skeleton |
| 05/09/2007 | CN2898296Y Polar-plate rotating device of mechanical propeller |
| 05/09/2007 | CN2898295Y Effective pressure-releasing balancing unit |
| 05/09/2007 | CN2898294Y Pressure-bearing connecting pin for petroleum logging equipment |
| 05/09/2007 | CN2898293Y Simple metering unit with oil-extraction and water-filling functions |
| 05/09/2007 | CN1314881C System and methods for measuring underground length of pipe inserted to wellbore |
| 05/08/2007 | US7213657 Apparatus and methods for installing instrumentation line in a wellbore |
| 05/08/2007 | US7213644 Cavity positioning tool and method |
| 05/08/2007 | CA2202490C Method and apparatus for determining the thickness of a well bore casing |
| 05/03/2007 | WO2007049046A1 Improvements to pressure equalising devices |
| 05/03/2007 | US20070095540 Apparatus and method for managed pressure drilling |
| 05/03/2007 | US20070095528 Method of Monitoring Fluid Placement During Stimulation Treatments |
| 05/03/2007 | US20070095096 Downhole sorption cooling and heating in wireline logging and monitoring while drilling |
| 05/03/2007 | CA2567423A1 Tubular measuring device |
| 05/02/2007 | EP1778949A2 Improvements to the flowshot technique |
| 05/02/2007 | EP1726187A4 Extracting and processing hydrocarbon-bearing formations |
| 05/02/2007 | CN2895737Y One-by reservoir detecting apparatus |
| 05/02/2007 | CN2895736Y Quick well-temperature tester |
| 05/02/2007 | CN2895735Y Single-point, multi-point clinometer of automatically recording depth |
| 05/02/2007 | CN2895730Y Oil-well time-rate monitor |
| 05/02/2007 | CN2895729Y Bias regulator of oil-well pumping unit |
| 05/02/2007 | CN2895711Y Sewage flow-guide apparatus of water-filling well detection lubricator |
| 05/01/2007 | US7212283 Imaging sensor optical system |
| 05/01/2007 | US7210856 Distributed temperature sensing in deep water subsea tree completions |
| 05/01/2007 | US7210344 Method for measuring formation properties with a time-limited formation test |
| 05/01/2007 | CA2405234C Roller cone drill bit having lubrication contamination detector and lubrication positive pressure maintenance system |
| 04/26/2007 | WO2007047800A2 Apparatus and method for managed pressure drilling |
| 04/26/2007 | WO2007047460A1 Apparatus and method for detecting fluid entering a wellbore |
| 04/26/2007 | WO2007024779B1 System for tracking and maintaining an on-grade horizontal borehole |
| 04/26/2007 | WO2006055370A3 Well production optimizing system |
| 04/26/2007 | US20070089878 Method for determining block properties of a service rig by evaluating rig data |
| 04/25/2007 | EP1412030B1 Method for biosolid disposal and methane generation |
| 04/25/2007 | CN2893143Y Dynamic regulating gyroscopic perforation azimuthal telescope |
| 04/25/2007 | CN1952347A Dynamic monitoring device for thick oil well group output and on-line monitoring method for flow rate thereof |
| 04/25/2007 | CN1312490C Down-hole cored tubular substance |
| 04/25/2007 | CN1312378C Method for generating electric power in or near gas transportation duct and thermoacoustic electric power generator |
| 04/25/2007 | CN1312377C Apparatus and method for operating drill head from ground surface when drilling |
| 04/24/2007 | USRE39583 Multiple well tool control systems in a multi-valve well testing system having automatic control modes |
| 04/24/2007 | US7208855 Fiber-optic cable as integral part of a submersible motor system |
| 04/24/2007 | US7207397 Multi-pole transmitter source |
| 04/24/2007 | US7207396 Method and apparatus of assessing down-hole drilling conditions |
| 04/24/2007 | US7207395 Method and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement |
| 04/24/2007 | US7207384 Wellhead and control stack pressure test plug tool |
| 04/24/2007 | US7207216 Hydraulic and mechanical noise isolation for improved formation testing |
| 04/24/2007 | US7207215 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit |
| 04/24/2007 | CA2397916C Resistivity and dielectric constant well core measurement system for measurement while drilling and laboratory |
| 04/24/2007 | CA2312742C Measurement-while-drilling assembly using gyroscopic devices and methods of bias removal |
| 04/24/2007 | CA2246315C An apparatus and system for making at-bit measurements while drilling |
| 04/24/2007 | CA2185205C Steerable drilling tool and system |
| 04/19/2007 | WO2007042759A1 Methods and systems for determining reservoir properties of subterranean formations with pre-existing fractures |
| 04/19/2007 | WO2006127939A3 System and method for nodal vibration analysis of a borehole pump system a different operational frequencies |
| 04/19/2007 | US20070084636 Enhanced sonde recognition |
| 04/19/2007 | US20070084635 Boring Tool Tracking Fundamentally Based on Drill String Length, Pitch and Roll |
| 04/19/2007 | US20070084277 Apparatus and method for detecting fluid entering a wellbore |
| 04/19/2007 | CA2823319A1 Method and apparatus for transmitting sensor response data and power through a mud motor |
| 04/19/2007 | CA2714874A1 Method and apparatus for transmitting sensor response data and power through a mud motor |
| 04/18/2007 | EP1774363A2 Method for generating a 3d earth model |
| 04/18/2007 | EP1774137A1 System for delivery of a tracer in fluid transport systems and use thereof |
| 04/18/2007 | EP1774136A1 Well characterisation method |
| 04/18/2007 | CN2890336Y Micro power consumption electronic lock powered by key |
| 04/18/2007 | CN2890335Y Borehole compensation hole caliper |
| 04/18/2007 | CN2890334Y Regulating arm for downhole logging tool |
| 04/18/2007 | CN1948708A Method of transmitting down order for well drilling and its system |
| 04/18/2007 | CN1948707A Strapdown type hole drilling inclinometer based on magnetic resistance and inclination sensor |
| 04/17/2007 | US7204309 MWD formation tester |
| 04/17/2007 | US7204308 Borehole marking devices and methods |