| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 08/29/2007 | CN200940477Y Dynamometer position safet device |
| 08/29/2007 | CN200940470Y Under balance underground sleeve valve capable of measuring bottom hole pressure |
| 08/29/2007 | CN200940465Y Cable anti-blow-out device |
| 08/29/2007 | CN101027456A Bottom drill combination |
| 08/29/2007 | CN101025084A Method for predetecting formation pore pressure under drill-bit while drilling |
| 08/29/2007 | CN101025083A Experiment method for packer working performance and apparatus thereof |
| 08/29/2007 | CN100334324C Control system suitable for continuous fiber gyrolevel for oil well |
| 08/28/2007 | US7263029 System and method for acquiring seismic and micro-seismic data in deviated wellbores |
| 08/28/2007 | US7261167 Method and system for predicting performance of a drilling system for a given formation |
| 08/28/2007 | US7261162 Subsea communications system |
| 08/28/2007 | US7261153 Packer cups |
| 08/28/2007 | CA2365044C Retrievable formation resistivity tool having a slotted collar |
| 08/24/2007 | CA2579901A1 Method and apparatus for pumping liquid from wells |
| 08/23/2007 | WO2007095153A1 System and method for pump noise cancellation in mud pulse telemetry |
| 08/23/2007 | WO2007095111A1 System and method for measurement while drilling telemetry |
| 08/23/2007 | WO2007094705A1 Method for determining filtration properties of rocks |
| 08/23/2007 | WO2007094698A1 Inductive position sensor |
| 08/23/2007 | WO2007093793A1 A method op detecting a parameter in an annulus of a borehole |
| 08/23/2007 | US20070198192 Systems and methods for well data compression |
| 08/23/2007 | US20070194947 Downhole power generation and communications apparatus and method |
| 08/23/2007 | US20070193777 Boring Tool Control using Remote Locator |
| 08/23/2007 | US20070193776 Borehole tool |
| 08/23/2007 | US20070193740 Monitoring formation properties |
| 08/23/2007 | US20070193739 Scale-inhibited water reduction in solutions and slurries |
| 08/23/2007 | US20070193351 Method and apparatus for ion-selective discrimination of fluids downhole |
| 08/23/2007 | CA2642589A1 Method for formation permeability profile determination |
| 08/22/2007 | EP1819901A1 Method and apparatus for cooling flasked instrument assemblies |
| 08/22/2007 | EP1819900A1 Sonde attachment means |
| 08/22/2007 | EP1149227B1 Method and rock drilling apparatus for controlling rock drilling |
| 08/22/2007 | CN2937476Y Photoelectric counting device for measuring salvage |
| 08/22/2007 | CN2937475Y Landing centering guide of radio inclinometer during drilling |
| 08/22/2007 | CN2937474Y Micro-stress indicator of beam pump |
| 08/22/2007 | CN2937467Y Under-balance well casing valve capable of measuring bottom-hole pressure |
| 08/22/2007 | CN1333236C Driller synchoronous display in non-excavating guider system |
| 08/21/2007 | US7260479 Method for locating casing joints using measurement while drilling tool |
| 08/21/2007 | US7260477 Estimation of borehole geometry parameters and lateral tool displacements |
| 08/21/2007 | US7259564 Method and device for determining the position of an interface in relation to a bore hole |
| 08/21/2007 | US7258175 Method and apparatus and program storage device adapted for automatic drill bit selection based on earth properties and wellbore geometry |
| 08/21/2007 | US7258164 Pumping system for oil wells |
| 08/21/2007 | CA2465668C Well jet device for testing and studying formations and the operating method thereof |
| 08/21/2007 | CA2431288C Method of placing downhole tools in a wellbore |
| 08/21/2007 | CA2270986C Apparatus and method for expanding a liner patch |
| 08/21/2007 | CA2206926C Control device for a directional tool |
| 08/16/2007 | WO2007091917A1 Well jet device for horizontal wells and the operating method thereof |
| 08/16/2007 | WO2007091900A1 Logging tool for hydrocarbon-producing wells |
| 08/16/2007 | WO2005081993A3 A downhole positioning system |
| 08/16/2007 | US20070192031 System and Method for Pump Noise Cancellation in Mud Pulse Telemetry |
| 08/16/2007 | US20070187147 Borehole drilling control system, method and apparatus |
| 08/16/2007 | US20070187146 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 08/16/2007 | US20070187092 System and method for detecting pressure disturbances in a formation while performing an operation |
| 08/16/2007 | US20070186640 Single point and fiber optic temperature measurement for correction of a gas column weight in a well |
| 08/16/2007 | US20070186639 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit |
| 08/16/2007 | CA2827032A1 Methods and apparatus for predicting the hydrocarbon production of a well location |
| 08/15/2007 | CN2934569Y Optical fiber test device suitable for permanent oil gas production well |
| 08/15/2007 | CN2934568Y Seal-testing assembly for underlayer oil extraction |
| 08/15/2007 | CN2934567Y Perpendicularity detecting instrument with supporting function |
| 08/15/2007 | CN2934566Y Antiknock and force-resistant pup joint for joining magnetic positioner and perforating gun |
| 08/15/2007 | CN2934565Y Self-lifting type oil well cable testing device |
| 08/15/2007 | CN1332123C Mechanical frame for optical-fiber gyro inclinometer for oil well |
| 08/15/2007 | CN101018926A Downhole measurements during non-drilling operations |
| 08/15/2007 | CN101017372A Measurement and control pressure testing system of petroleum well control device |
| 08/15/2007 | CN101016837A Cement interface shearing in annulus supersonic ultrasonic testing method |
| 08/15/2007 | CA2577577A1 Well depth measurement using time domain reflectometry |
| 08/14/2007 | US7257491 Method of determining the per strata reserve quality of an oil well |
| 08/14/2007 | US7257489 Quadrupole acoustic shear wave logging while drilling |
| 08/14/2007 | US7257050 Through tubing real time downhole wireless gauge |
| 08/14/2007 | US7256706 Hybrid well communication system |
| 08/14/2007 | US7255173 Instrumentation for a downhole deployment valve |
| 08/14/2007 | US7255166 Imbibition well stimulation via neural network design |
| 08/14/2007 | US7254999 Permanently installed in-well fiber optic accelerometer-based seismic sensing apparatus and associated method |
| 08/14/2007 | CA2525583C Wireless well communication system and method for using the same |
| 08/14/2007 | CA2456812C Pressure pulse generator for downhole tool |
| 08/14/2007 | CA2439453C Oscillating shear valve for mud pulse telemetry |
| 08/13/2007 | CA2536451A1 Bop drill string and tubing string monitoring system |
| 08/09/2007 | WO2007089713A2 Biogenic fuel gas generation in geologic hydrocarbon deposits |
| 08/09/2007 | US20070181341 Mwd formation tester |
| 08/09/2007 | US20070181340 Drilling apparatus with percussive action cutter |
| 08/09/2007 | CA2603891A1 Biogenic fuel gas generation in geologic hydrocarbon deposits |
| 08/08/2007 | EP1815105A1 Measuring device for a drilling apparatus |
| 08/08/2007 | EP1815101A1 Methods and apparatus for drilling, completing and configuring u-tube boreholes |
| 08/08/2007 | CN2931785Y High temperature testing leads |
| 08/08/2007 | CN2931784Y temperature sensor used for bergol logging device |
| 08/08/2007 | CN2931783Y Magnetic marking boring tool sticking point measuring instrument |
| 08/08/2007 | CN2931772Y Under balance under well casing valve capable of measuring bottom-hole pressure |
| 08/08/2007 | CN101015147A Downhole telemetry system for wired tubing |
| 08/08/2007 | CN101012745A Method for measurement of oil gas well bore track |
| 08/07/2007 | US7253745 Corrosion-resistant downhole transmission system |
| 08/07/2007 | US7253628 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
| 08/07/2007 | US7253401 Spectral gamma ray logging-while-drilling system |
| 08/07/2007 | US7252160 Electromagnetic gap sub assembly |
| 08/07/2007 | US7252152 Methods and apparatus for actuating a downhole tool |
| 08/07/2007 | US7252144 Magnetometers for measurement-while-drilling applications |
| 08/07/2007 | US7252143 Method and apparatus for anchoring tool in borehole conduit |
| 08/07/2007 | CA2456797C Deformable blades for downhole applications in a wellbore |
| 08/07/2007 | CA2439521C Downhole logging into place tool |
| 08/07/2007 | CA2290895C Method and apparatus for well logging and well control |
| 08/02/2007 | WO2007086837A1 Positional control of downhole actuators |
| 08/02/2007 | WO2007086004A1 Method of treating a subterranean formation using a rheology model for fluid optimization |
| 08/02/2007 | WO2007085850A1 Remote area sensor system |
| 08/02/2007 | WO2007085783A1 System and method for remote real-time surveillance and control of pumped wells |