| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 05/20/2008 | US7373975 Downhole recorder system |
| 05/20/2008 | US7373813 Method and apparatus for ion-selective discrimination of fluids downhole |
| 05/20/2008 | CA2610113A1 High strength-to-weight-ratio slickline and multiline cables |
| 05/20/2008 | CA2609886A1 Enhanced electrical cables |
| 05/20/2008 | CA2473317C Method for reservoir navigation using formation pressure testing measurement while drilling |
| 05/15/2008 | WO2008058298A1 Method and apparatus for the delivery of under-saturated sour water into a geological formation |
| 05/15/2008 | WO2008058076A1 Downhole sensor networks |
| 05/15/2008 | WO2008057009A1 Well jet device |
| 05/15/2008 | WO2008057008A1 Well jet device |
| 05/15/2008 | WO2008056096A1 Vibration damping system for drilling equipment |
| 05/15/2008 | WO2008034867A3 Device and method for detecting an anomaly in an assembly of a first and a second object |
| 05/15/2008 | WO2008027652A3 Pulsed-neutron formation density |
| 05/15/2008 | WO2008024868A8 Method of obtaining a treatment composition for improving the productivity of hydrocarbon producing wells |
| 05/15/2008 | US20080112262 Cement bond analysis |
| 05/15/2008 | US20080111552 Multi-Frequency Boring Tool Locating System and Method |
| 05/15/2008 | US20080110675 Rock Drilling Device and Rock Drilling Rig Incorporating A Pressure Cylinder For Feeding The Drilling Machine |
| 05/15/2008 | US20080110673 Apparatus and methods for drilling a wellbore using casing |
| 05/15/2008 | US20080110617 Method and Apparatus for Logging Downhole Data |
| 05/15/2008 | US20080110253 Downhole measurement of substances in formations while drilling |
| 05/15/2008 | CA2668625A1 Apparatus and method for estimating filtrate contamination in a formation fluid |
| 05/14/2008 | EP1920272A2 Method and apparatus for enhancing formation resistivity images obtained with downhole galvanic tools |
| 05/14/2008 | EP1920135A2 Multi-purpose downhole tool |
| 05/14/2008 | CN201060270Y Test device used for petroleum well logging instrument |
| 05/14/2008 | CN201059189Y Potentiometer of hole diameter measuring instrument |
| 05/14/2008 | CN201059188Y Flexible connector base-piece and flexible connector |
| 05/14/2008 | CN201059167Y Round spindle telescopic joint |
| 05/14/2008 | CN101178007A Diaphragm-type optical-fiber intelligent well pressure and temperature sensing unit |
| 05/14/2008 | CN101178006A Optical-fiber temperature and pressure two-parameter permanent oil well sensing unit |
| 05/13/2008 | US7370710 Erectable arm assembly for use in boreholes |
| 05/13/2008 | CA2481539C Automatic downlink system |
| 05/13/2008 | CA2473511C Apparatus for wellbore communication |
| 05/08/2008 | WO2008055266A1 Devices and systems for measurement of position of drilling related equipment |
| 05/08/2008 | WO2008054241A1 Well jet device for weel-logging operations |
| 05/08/2008 | WO2008053155A1 An apparatus for creating pressure pulses in the fluid of a bore hole |
| 05/08/2008 | WO2008036793A3 Downhole noise cancellation in mud-pulse telemetry |
| 05/08/2008 | WO2007112363A3 Methods and system for evaluating and displaying depth data |
| 05/08/2008 | US20080105427 Devices and systems for measurement of position of drilling related equipment |
| 05/08/2008 | US20080105426 Method and Apparatus for Estimating the Permeability Distribution During a Well Test |
| 05/08/2008 | US20080105423 Downhole Depth Computation Methods and Related System |
| 05/08/2008 | CA2670700A1 Devices and systems for measurement of position of drilling related equipment |
| 05/08/2008 | CA2668474A1 An apparatus for creating pressure pulses in the fluid of a bore hole |
| 05/07/2008 | EP1917619A2 Well modeling associated with extraction of hydrocarbons from subsurface formations |
| 05/07/2008 | EP1917499A1 An orientation sensing apparatus and a method for determining an orientation |
| 05/07/2008 | EP1917417A2 Acoustic fluid analyzer |
| 05/07/2008 | EP1815105B1 Measuring device for a drilling apparatus |
| 05/07/2008 | CN201057043Y Data transducer of oil pumping well indicator |
| 05/07/2008 | CN201057042Y Mounting device of gas drilling and logging sensor |
| 05/07/2008 | CN201057041Y Lengthened connection device |
| 05/07/2008 | CN201056999Y Off-centering shaft mouth rotating device |
| 05/06/2008 | US7367411 Drilling system and method |
| 05/06/2008 | US7367393 Pressure monitoring of control lines for tool position feedback |
| 05/06/2008 | US7367392 Wellbore apparatus with sliding shields |
| 05/06/2008 | US7367269 Blast movement monitor and method for determining the movement of a blast movement monitor and associated rock as a result of blasting operations |
| 05/06/2008 | CA2475360C Liner top test packer |
| 05/03/2008 | CA2567292A1 Seismic drilling bit |
| 05/02/2008 | WO2008049835A1 System for determining sealing in a wellbore |
| 05/02/2008 | WO2008008386A3 Modular geosteering tool assembly |
| 05/02/2008 | CA2667461A1 System for determining sealing in a wellbore |
| 05/02/2008 | CA2657909A1 Breathable downhole fiber optic cable and a method of restoring performance |
| 05/01/2008 | US20080099245 Cam Assembly in a Downhole Component |
| 05/01/2008 | US20080099241 Characterizing a reservoir in connection with drilling operations |
| 05/01/2008 | US20080099211 Reciprocating pump drive apparatus |
| 05/01/2008 | US20080099197 Cable integrity monitor for electromagnetic telemetry systems |
| 05/01/2008 | US20080099195 Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 04/30/2008 | EP1915504A1 Bi-directional drill string telemetry system for measurement and drilling control |
| 04/30/2008 | CN201053318Y Logging device by-pass short joint cable passage dynamic sealing device |
| 04/30/2008 | CN201053317Y Logging device by-pass short joint spray-proof sealing device |
| 04/30/2008 | CN201053316Y Four-arm separation type borehole diameter logger |
| 04/30/2008 | CN201053315Y Double hole spraying-proof plug |
| 04/30/2008 | CN201053314Y Horizontal well flexible short section |
| 04/30/2008 | CN201053313Y Layered six-parameter single-layer synchronous self-controlling testing process tubular column for pumping well |
| 04/30/2008 | CN101169482A Method and system for earthquake prediction by monitoring pressure of off-production gas well |
| 04/29/2008 | US7364008 System for imparting mechanical impulse energy to the ground |
| 04/29/2008 | US7364007 Integrated acoustic transducer assembly |
| 04/29/2008 | US7363988 System and method for processing and transmitting information from measurements made while drilling |
| 04/29/2008 | US7363971 Method and apparatus for maintaining a multi-chip module at a temperature above downhole temperature |
| 04/29/2008 | US7363969 Casing vent security device |
| 04/29/2008 | US7363967 Downhole tool with navigation system |
| 04/29/2008 | US7363717 System and method for using rotation sensors within a borehole |
| 04/29/2008 | CA2537502C Separable plug for use in a wellbore |
| 04/29/2008 | CA2486091C Controlling a pressure transient in a well |
| 04/29/2008 | CA2411411C Improved bandwidth wireline data transmission system and method |
| 04/29/2008 | CA2408898C Well reference apparatus and method |
| 04/29/2008 | CA2349596C Sensor array suitable for long term placement inside wellbore casing |
| 04/29/2008 | CA2334920C Method of determining azimuth of a borehole |
| 04/29/2008 | CA2290894C Well logging tool |
| 04/24/2008 | WO2008048966A2 Method of collecting hydrocarbons using a barrier tunnel |
| 04/24/2008 | WO2008048109A1 Subsea accumulator monitoring system |
| 04/24/2008 | WO2008047107A1 Cement evaluation method and tool |
| 04/24/2008 | WO2008046835A2 Method of detecting a lateral boundary of a reservoir |
| 04/24/2008 | WO2008046833A1 Method of detecting a lateral boundary of a reservoir |
| 04/24/2008 | WO2008024806A3 Early kick detection in an oil and gas well |
| 04/24/2008 | US20080093124 Apparatus and methods for drilling a wellbore using casing |
| 04/24/2008 | US20080093090 Sonde Deployment |
| 04/24/2008 | CA2666506A1 Method of collecting hydrocarbons using a barrier tunnel |
| 04/24/2008 | CA2663824A1 Optimized well spacing for in situ shale oil development |
| 04/23/2008 | EP1913231A1 Interface and method for wellbore telemetry system |
| 04/23/2008 | EP1913228A2 Surface communication apparatus and method for use with string telemetry |
| 04/23/2008 | EP0916101B1 Combined electric-field telemetry and formation evaluation apparatus |
| 04/23/2008 | CN201050364Y Ground surface wireless read-write type inner-hole electronic measuring device |