| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 12/19/2007 | EP1867829A1 Apparatus and method for downhole dynamics measurements |
| 12/19/2007 | CN200993586Y Pay gas ground metering device |
| 12/19/2007 | CN200993072Y Underground turbo generator |
| 12/19/2007 | CN200993011Y Probe connecting device |
| 12/19/2007 | CN200993010Y Sonic logging instrument acoustic sonde connecting device |
| 12/19/2007 | CN200993009Y Downhol pressure measuring levice |
| 12/19/2007 | CN200993008Y Horizontal well looped pipeline testing device |
| 12/19/2007 | CN200993007Y Oil well testing gate valve |
| 12/19/2007 | CN200993006Y Fast-assembled electromagnetic door lock structure |
| 12/19/2007 | CN200993005Y Oil well working condition monitoring device |
| 12/19/2007 | CN200993004Y Separator oil-gas continuousautomatic metering device |
| 12/19/2007 | CN200993003Y Water injection well testing steel wire protector |
| 12/19/2007 | CN200993002Y Drilling parameter collecting coder fixing device |
| 12/19/2007 | CN101089363A Determination of borehole geometry inside cased wells with crosswell electromagnetics |
| 12/19/2007 | CN101089358A Method and apparatus to facilitate wet or dry control line connection for the downhole environment |
| 12/18/2007 | US7309990 Flux orientation locating in a drilling system |
| 12/18/2007 | US7308941 Apparatus and methods for measurement of solids in a wellbore |
| 12/18/2007 | CA2428661C Apparatus and method for formation testing while drilling using combined absolute and differential pressure measurement |
| 12/18/2007 | CA2386314C Asphaltenes monitoring and control system |
| 12/13/2007 | WO2007143384A2 System and method for reducing the borehole gap for downhole formation testing sensors |
| 12/13/2007 | WO2007141512A1 In-borehole gas monitor apparatus and method |
| 12/13/2007 | WO2007140820A1 A method and apparatus for patching a well by hydroforming a tubular metal patch, and a patch for this purpose |
| 12/13/2007 | US20070288211 Electromagnetic Surveying for Resistive or Conductive Bodies |
| 12/13/2007 | US20070288169 Method and system for evaluating weight data from a service rig |
| 12/13/2007 | US20070285275 Remote Actuation of a Downhole Tool |
| 12/13/2007 | US20070285274 Multi-Physics Inversion Processing to Predict Pore Pressure ahead of the Drill Bit |
| 12/13/2007 | US20070284112 Instrumented Tabular Device for Transporting a Pressurized Fluid |
| 12/13/2007 | US20070284098 Sensor system and method of communicating data between a downhole device on a remote location |
| 12/13/2007 | US20070283761 Permanently installed in-well fiber optic accelerometer-based sensing apparatus and associated method |
| 12/13/2007 | US20070283752 Downhole pressure transmitter |
| 12/13/2007 | US20070283751 Downhole Flow Measurement In A Well |
| 12/13/2007 | US20070283585 Two-axis geomagnetic sensor and method for manufacturing the same |
| 12/13/2007 | CA2654052A1 In-borehole gas monitor apparatus and method |
| 12/13/2007 | CA2653611A1 Downhole tool with sensors mounted on extendable hinged pads |
| 12/13/2007 | CA2591386A1 Downhole pressure transmitter |
| 12/13/2007 | CA2591020A1 Interpreting well test measurements |
| 12/12/2007 | EP1613838B1 Drill hole measuring device and rock drilling unit |
| 12/12/2007 | CN200989808Y Liquid level monitoring alarm |
| 12/12/2007 | CN200989203Y Apparatus for simulating porforation effect detection under reservoir condition |
| 12/12/2007 | CN101086457A Method and device for fluid flow parameters determination |
| 12/12/2007 | CN100354622C Detecting equipment for mud positive pulse generator |
| 12/12/2007 | CN100354502C Drilling machine wired tramp instrument |
| 12/11/2007 | US7307425 Receiver electronics proximate antenna |
| 12/11/2007 | US7306054 Method for improving drilling depth measurements |
| 12/11/2007 | US7306053 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 12/11/2007 | US7306043 System and method to control multiple tools through one control line |
| 12/11/2007 | CA2271525C Method of downhole drilling and apparatus therefor |
| 12/09/2007 | CA2590655A1 Method and device for fluid flow parameters determination |
| 12/06/2007 | WO2007140313A2 Well cleanup tool with real time condition feedback to the surface |
| 12/06/2007 | WO2007137356A1 Core orientation system |
| 12/06/2007 | WO2007137351A1 Core orientation determination |
| 12/06/2007 | WO2007137326A1 Method and system of data acquisition and transmission |
| 12/06/2007 | WO2005086691A3 Multiple distributed sensors along a drillstring |
| 12/06/2007 | US20070279249 Measuring Device For A Drilling Apparatus |
| 12/06/2007 | US20070278009 Method and Apparatus for Sensing Downhole Characteristics |
| 12/06/2007 | US20070278008 Electromagnetically determining the relative location of a drill bit using a solenoid source installed on a steel casing |
| 12/06/2007 | US20070277976 Anchor bolt and annularly grooved expansion sleeve assembly exhibiting high pull-out resistance, particularly under cracked concrete test conditions |
| 12/06/2007 | US20070277975 Methods for obtaining a wellbore schematic and using same for wellbore servicing |
| 12/06/2007 | CA2655646A1 Well cleanup tool with real time condition feedback to the surface |
| 12/06/2007 | CA2653466A1 Core orientation system |
| 12/06/2007 | CA2651818A1 Core orientation determination |
| 12/05/2007 | CN200986541Y Underground litter detector |
| 12/05/2007 | CN200986476Y Drawer type wireless two-in-one load displacement pickup |
| 12/05/2007 | CN200985790Y Column aspect phased array circumferential well scan supersonic transducer |
| 12/05/2007 | CN200985789Y Slip-ring used for petroleum guide boring tool |
| 12/05/2007 | CN200985788Y High-temperature high pressure glass micromodel glass holder |
| 12/05/2007 | CN200985787Y Instrumentation for measuring casing coupling with fiber optic sensor |
| 12/05/2007 | CN200985786Y Pressure transmitter |
| 12/05/2007 | CN200985785Y Device for testing flow quantity with optical fibre |
| 12/05/2007 | CN101082276A Methods and device of oriented electromagnetic wave electric resistivity |
| 12/05/2007 | CN101082275A Ground surface monitoring method for high speed oil tube transmission perforation |
| 12/05/2007 | CN101082274A Water injection well layered electric testing method employing metallic sheath detective cable |
| 12/05/2007 | CN101082267A Method and conduit for transmitting signals |
| 12/05/2007 | CN100353676C Wireless communication circuit |
| 12/05/2007 | CN100353147C Tracking reception piloting device in trenchless guiding instrument system |
| 12/05/2007 | CN100353146C Prospecting guiding emitting probe in non-excavating guider system |
| 12/05/2007 | CN100353027C Under balance drilling bottom pressure automatic control system and method |
| 12/04/2007 | US7305306 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof |
| 12/04/2007 | US7304479 Flux plane locating in an underground drilling system |
| 12/04/2007 | US7303011 Downhole formation testing tool |
| 12/04/2007 | US7303010 Apparatus and method for an autonomous robotic system for performing activities in a well |
| 12/04/2007 | US7303009 Method to detect low salinity injection water encroachment into oil formations |
| 12/04/2007 | US7303008 Methods and systems for reverse-circulation cementing in subterranean formations |
| 12/04/2007 | US7303007 Method and apparatus for transmitting sensor response data and power through a mud motor |
| 12/04/2007 | US7303006 Method for improved vertical sweep of oil reservoirs |
| 12/04/2007 | US7302849 Method and system for monitoring of fluid-filled domains in a medium based on interface waves propagating along their surfaces |
| 12/04/2007 | US7302841 Free point tool with low mass sensor |
| 12/04/2007 | CA2485788C Downhole tools with a stirling cooler system |
| 12/04/2007 | CA2453015C Drilling rig closed loop controls |
| 12/04/2007 | CA2450653C Use of axial accelerometer for estimation of instantaneous rop downhole for lwd and wireline applications |
| 12/04/2007 | CA2444443C Clamp mechanism for in-well seismic station |
| 12/04/2007 | CA2378518C Downhole anchoring tools conveyed by non-rigid carriers |
| 12/04/2007 | CA2354692C Method and rock drilling apparatus for controlling rock drilling |
| 12/04/2007 | CA2323654C Wellbore antennae system and method |
| 12/04/2007 | CA2296054C Computer controlled injection wells |
| 11/29/2007 | US20070276603 Detection of Water Breakthrough |
| 11/29/2007 | US20070274844 Process and device for generating signals which can be transmitted in a well |
| 11/29/2007 | US20070272552 Electro-Chemical Sensor |
| 11/29/2007 | US20070272442 Method and apparatus for collecting drill bit performance data |
| 11/29/2007 | US20070272033 Flow meter using an expanded tube section and sensitive differential pressure measurement |