| Patents for E21B 41 - Equipment or details not covered by groups (7,984) |
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| 03/05/2003 | CN2538954Y Multifunctional device for centralising, transporting sand and settling of screw pump well |
| 03/04/2003 | US6527067 Lateral entry guidance system (LEGS) |
| 03/04/2003 | US6527052 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 03/04/2003 | US6526818 Seabed analysis |
| 02/27/2003 | WO2003016953A1 Downhole nmr processing |
| 02/27/2003 | WO2003016673A1 Tool for replaceable pressure and temperature sensor |
| 02/25/2003 | US6523613 Hydraulically actuated valve |
| 02/20/2003 | WO2003014519A1 Completion of lateral well bores |
| 02/20/2003 | US20030034156 Multi-function apparatus for adding a branch well sealed liner and connector to an existing cased well at low cost |
| 02/19/2003 | EP1283941A1 Sealed lateral wellbore junction |
| 02/19/2003 | CN2536784Y Drifting device refitted from caterpillar one |
| 02/13/2003 | WO2003011398A1 Method for biosolid disposal and methane generation |
| 02/13/2003 | US20030029620 Foundation for suction in installation of conductor casing |
| 02/12/2003 | CN2535553Y Underpit hydraulic torque compensator |
| 02/11/2003 | US6516861 Method and apparatus for injecting a fluid into a well |
| 02/06/2003 | WO2003010413A1 Downhole electrical power system |
| 02/06/2003 | US20030026169 Adaptive acoustic transmitter controller apparatus and method |
| 02/06/2003 | US20030024699 In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio |
| 02/05/2003 | CN2534366Y Pressure conducting desander |
| 02/05/2003 | CN1395023A Quick workover process |
| 02/04/2003 | US6516293 Method for simulating drilling of roller cone bits and its application to roller cone bit design and performance |
| 02/04/2003 | US6513589 Hydraulic switch device |
| 01/30/2003 | US20030019626 In situ thermal processing of a coal formation with a selected hydrogen content and/or selected H/C ratio |
| 01/30/2003 | US20030019621 Downhole electrical power system |
| 01/29/2003 | EP1278932A1 Apparatus and methods for forming a lateral wellbore |
| 01/29/2003 | CN2533260Y Split pumping rod wax scraper |
| 01/23/2003 | WO2002052124A3 Method and apparatus for repair operations downhole |
| 01/23/2003 | US20030015351 Method and system for predicting performance of a drilling system of a given formation |
| 01/22/2003 | EP1277162A1 Field programmable smart card terminal and token device |
| 01/22/2003 | EP1276967A2 A method for treating a hydrocarbon containing formation |
| 01/22/2003 | EP1276966A1 A method for treating a hydrocarbon-containing formation |
| 01/22/2003 | EP1276965A1 A method for treating a hydrocarbon containing formation |
| 01/22/2003 | EP1276964A1 A method for treating a hydrocarbon containing formation |
| 01/22/2003 | EP1276963A1 In situ recovery of hydrocarbons from a kerogen-containing formation |
| 01/22/2003 | EP1276961A2 Method for treating a hydrocarbon-containing formation |
| 01/22/2003 | EP1276960A2 A method for sequestering a fluid within a hydrocarbon containing formation |
| 01/22/2003 | EP1276959A2 Method and system for treating a hydrocarbon containing formation |
| 01/22/2003 | EP1276958A1 Electrical well heating system and method |
| 01/22/2003 | EP1276957A1 Electrical well heating system and method |
| 01/22/2003 | EP1015388B1 Method for inhibiting biogenic sulfide generation |
| 01/16/2003 | WO2002025319A3 Methods and apparatus for interactive communications |
| 01/16/2003 | US20030010503 Method for preventing critical annular pressure buildup |
| 01/16/2003 | CA2353160A1 Robotic proboscis pipeline apparatus |
| 01/15/2003 | EP1274992A1 Apparatus and method for downhole well equipment and process management, identification, and actuation |
| 01/14/2003 | US6505684 Hydraulic actuator |
| 01/09/2003 | WO2002093126A3 Method and apparatus for downhole fluid characterization using flxural mechanical resonators |
| 01/09/2003 | US20030006202 Method for handling, processing and disposing of drill cuttings |
| 01/09/2003 | US20030006201 Separating drill cuttings from drilling mud, transporting cuttings to compactor, compacting, filling storage bags with compacted bodies, delivering to storage location |
| 01/09/2003 | US20030006039 In situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance |
| 01/08/2003 | CN2530030Y Oil well anti-sand filling device |
| 01/07/2003 | US6504258 Vibration based downhole power generator |
| 01/07/2003 | US6503021 Method and apparatus for connecting underwater conduits |
| 01/07/2003 | US6502640 Hydraulic actuator |
| 01/03/2003 | WO2001091206A9 Fuel cell for downhole power systems |
| 01/02/2003 | US20030000708 FAC tool flexible assembly and method |
| 01/02/2003 | US20030000706 High impact communication and control system |
| 01/02/2003 | EP1268974A2 Tool and method for managing fluid flow in a well |
| 01/02/2003 | EP1268972A1 Pressure boost pump |
| 01/02/2003 | EP1246994A4 Assembly and method for locating lateral wellbores |
| 01/01/2003 | CN2528931Y Centrifugal full-packed grinding-milling tool for major repair of oil-water well |
| 01/01/2003 | CN1097707C System for geothermal electricity generation |
| 12/31/2002 | US6499537 Well reference apparatus and method |
| 12/27/2002 | WO2002102653A1 Seawater intake riser system |
| 12/27/2002 | WO2002038908A3 Differential sensor measurements to detect drill bit failure |
| 12/27/2002 | WO2002035056B1 Downhole generator for horizontal directional drilling |
| 12/25/2002 | CN1097137C 钻孔系统 Drilling System |
| 12/25/2002 | CN1097135C Method for reducing waste component in hydrocarbon fluid |
| 12/24/2002 | US6497288 Deviated borehole drilling assembly |
| 12/19/2002 | US20020191969 In situ thermal processing of a coal formation in reducing environment |
| 12/19/2002 | US20020191968 In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbon fluids and synthesis gas |
| 12/19/2002 | US20020189806 System and technique for monitoring and managing the deployment of subsea equipment |
| 12/19/2002 | US20020189696 Expanding tubing |
| 12/18/2002 | EP1265785A1 Apparatus for deploying a load to an underwater target position with enhanced accuracy and a method to control such apparatus |
| 12/18/2002 | CN2526503Y Water supplying device for repairing well |
| 12/17/2002 | US6494267 Wellhead assembly for accessing an annulus in a well and a method for its use |
| 12/12/2002 | WO2002099247A1 In-situ casting of well equipment |
| 12/12/2002 | WO2002099245A1 Use of helically wound tubular structure in the downhole environment |
| 12/12/2002 | US20020185274 Apparatus and methods for expanding tubulars in a wellbore |
| 12/11/2002 | EP1264077A1 Subterranean well completion apparatus with flow assurance system and associated methods |
| 12/11/2002 | EP1264067A1 Foundation for suction in installation of conductor casing |
| 12/11/2002 | EP1264066A1 Template and system of templates for drilling and completing offsite well bores |
| 12/11/2002 | CN1095920C Boom arrangement for rock drilling apparatus |
| 12/10/2002 | US6491616 Method for biosolid disposal and methane generation |
| 12/10/2002 | US6491117 Apparatus for retrieving metal debris from a well bore |
| 12/10/2002 | US6491102 Downhole multiplexer and related methods |
| 12/10/2002 | US6491101 Apparatus for establishing branch wells from a parent well |
| 12/10/2002 | US6491100 Disposal of fluids by displacement injection in shallow soils |
| 12/05/2002 | US20020179306 Use of helically wound tubular structure in the downhole environment |
| 12/05/2002 | US20020178805 Method and apparatus for downhole fluid characterization using flexural mechanical resonators |
| 12/03/2002 | US6490527 Method for characterization of rock strata in drilling operations |
| 12/03/2002 | US6488095 Method and apparatus for orienting a whipstock in an earth borehole |
| 12/03/2002 | US6488087 Field development methods |
| 11/28/2002 | WO2002057589A9 Internal power source for downhole detection system |
| 11/28/2002 | US20020177955 Completions architecture |
| 11/28/2002 | DE10201631A1 Technik zum Ausbilden expandierbarer Vorrichtungen aus Zellen, die zwischen einem kontrahierten Zustand und einem expandierten Zustand wechseln können Technique for forming expandable devices from cells that can switch between a contracted state and an expanded state |
| 11/27/2002 | EP1259708A2 Wireless power and communications cross-bar switch |
| 11/27/2002 | EP1259702A1 Power generation using batteries with reconfigurable discharge |
| 11/27/2002 | EP1259701A1 Controlled downhole chemical injection |
| 11/26/2002 | US6484807 Wellhead assembly for injecting a fluid into a well and method of using the same |
| 11/21/2002 | WO2002093126A2 Method and apparatus for downhole fluid characterization using flxural mechanical resonators |