| Patents for E21B 41 - Equipment or details not covered by groups (7,984) |
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| 02/19/2004 | WO2004015264A1 Guiding apparatus for subsea modules, a method and a foundation |
| 02/18/2004 | EP1389666A2 Force-balanced roller-cone bits, systems, drilling methods, and design methods |
| 02/18/2004 | EP1012441B1 Apparatus and method for installing a branch junction from a main well |
| 02/17/2004 | US6692194 Method for installing a conductor casing through a suction substructure |
| 02/17/2004 | US6691802 Internal power source for downhole detection system |
| 02/12/2004 | WO2004013997A1 Adaptive acoustic transmitter controller apparatus and method |
| 02/12/2004 | WO2004013446A2 Self-excited drill bit sub |
| 02/12/2004 | US20040029979 Corrosion inhibiting rinsing agent |
| 02/12/2004 | US20040026090 Apparatus and methods for anchoring and orienting equipment in well casing |
| 02/12/2004 | US20040026086 Actuator module to operate a downhole tool |
| 02/12/2004 | CA2724787A1 Apparatus and methods for anchoring and orienting equipment in well casing |
| 02/11/2004 | EP1387924A1 Apparatus and methods for tubular makeup interlock |
| 02/11/2004 | CN2603194Y Solid iron for wedge deflection tool |
| 02/10/2004 | US6688387 In situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate |
| 02/10/2004 | CA2217638C Control of fine particulate flowback in subterranean wells |
| 02/05/2004 | WO2004011836A2 Apparatus and method to complete a multilateral junction |
| 02/05/2004 | WO2004011772A1 Method of controlling scale formation |
| 02/05/2004 | WO2004011766A1 Drilling method |
| 02/05/2004 | US20040020648 Well reference apparatus and method |
| 02/04/2004 | EP1386387A1 Downhole torque generator |
| 02/04/2004 | EP1386386A1 Downhole torque-generating and generator combination apparatus |
| 02/04/2004 | CN2602157Y Well repairing machine safety monitoring device |
| 02/04/2004 | CN2602156Y Full-hydraulic wheeled hoist tractor |
| 02/03/2004 | US6686079 Fuel cell for downhole power systems |
| 02/03/2004 | US6684952 Inductively coupled method and apparatus of communicating with wellbore equipment |
| 02/03/2004 | US6684948 Apparatus and method for heating subterranean formations using fuel cells |
| 01/29/2004 | WO2004010568A2 Method and apparatus for generating pollution free electrical energy from hydrocarbons |
| 01/29/2004 | WO2004009959A2 Disposal of deleterious materials from a well |
| 01/29/2004 | US20040016547 Apparatus and method to complete a multilateral junction |
| 01/29/2004 | US20040016542 Method and apparatus for conveying a tool in a borehole |
| 01/29/2004 | US20040016540 Device for cleaning an inner pipe inserted into a gas or oil producing well |
| 01/28/2004 | EP1383984A1 Downhole electrical power system |
| 01/28/2004 | CN2601302Y Pneumatic mud scraper for drill |
| 01/28/2004 | CN2601301Y Crawling well cleaning machine |
| 01/27/2004 | US6681894 Portable well head work platform |
| 01/27/2004 | US6681633 Spectral power ratio method and system for detecting drill bit failure and signaling surface operator |
| 01/22/2004 | WO2004007899A1 Wellbore sealing system and method |
| 01/22/2004 | WO2004007898A1 Wellbore plug system and method |
| 01/22/2004 | WO2002063106A8 A method for installing submerged oil and gas wells, and apparatus for the same |
| 01/22/2004 | US20040015023 Heat exchanging, controlling the heat, temperature and pressure, pyrolyzing; a heater is located in an open wellbore, also heat exchanger, insulation conductor |
| 01/22/2004 | US20040011592 Work platform for blowout preventer stacks |
| 01/22/2004 | US20040011562 Methods and apparatus for disposing of deleterious materials from a well |
| 01/22/2004 | US20040011529 Sealed lateral wellbore junction |
| 01/22/2004 | US20040011523 Method and apparatus for generating pollution free electrical energy from hydrocarbons |
| 01/22/2004 | US20040011521 Template and system of templates for drilling and completing offset well bores |
| 01/22/2004 | CA2493379A1 Wellbore sealing system and method |
| 01/22/2004 | CA2493378A1 Wellbore plug system and method |
| 01/21/2004 | EP1381921A1 Field/reservoir optimization utilizing neural networks |
| 01/21/2004 | EP1381754A1 Modeling of reservoir stimulation treatment |
| 01/21/2004 | CN2600585Y Spring magnesium band anode device |
| 01/21/2004 | CN2600584Y Hydraulic lighting starter set for field work |
| 01/20/2004 | US6679334 Use of helically wound tubular structure in the downhole environment |
| 01/20/2004 | US6679332 Petroleum well having downhole sensors, communication and power |
| 01/20/2004 | US6679329 Sand barrier for a level 3 multilateral wellbore junction |
| 01/15/2004 | WO2004005673A1 Sand transport system |
| 01/15/2004 | WO2004005669A1 Corrugated downhole tubulars |
| 01/15/2004 | WO2003078791A3 Method and apparatus for injecting steam into a geological formation |
| 01/15/2004 | US20040007390 Wellbore plug system and method |
| 01/15/2004 | US20040007389 Wellbore sealing system and method |
| 01/15/2004 | DE10227879A1 Lichtvorhang für bewegte Maschinen oder Maschinenteile Light curtain for moving machines or machine parts |
| 01/14/2004 | EP1112433B1 Roller cone drill bit, method of designing the same and rotary drilling system |
| 01/14/2004 | CN2599229Y Machine oil extraction pipe uniform grater |
| 01/14/2004 | CN2599228Y 轻便水龙头 Light taps |
| 01/14/2004 | CN2599227Y 泄油器 Bleeder |
| 01/13/2004 | US6677861 Monitoring system |
| 01/13/2004 | US6675901 Use of helically wound tubular structure in the downhole environment |
| 01/13/2004 | US6675898 Apparatus for preventing critical annular pressure buildup |
| 01/08/2004 | WO2003089751A3 Method for improving drilling depth measurements |
| 01/08/2004 | US20040003925 Method and apparatus for providing protected multilateral junctions |
| 01/07/2004 | CN2597663Y Self-drip chemical adder for wellhead |
| 01/07/2004 | CN2597662Y Composite unidirection ball injection stop |
| 01/07/2004 | CN2597661Y Wheel type hydraulic pigging machine |
| 01/06/2004 | US6675101 Method and system for supplying well log data to a customer |
| 01/06/2004 | US6672409 Downhole generator for horizontal directional drilling |
| 01/06/2004 | US6672382 Downhole electrical power system |
| 01/06/2004 | CA2306976C Method and apparatus for hydraulic fracturing analysis and design |
| 01/02/2004 | EP1373676A1 An apparatus for retrieving metal debris from a well bore |
| 01/01/2004 | US20040000430 Iterative drilling simulation process for enhanced economic decision making |
| 12/31/2003 | WO2002002900A8 Apparatus and method to complete a multilateral junction |
| 12/30/2003 | US6668932 Apparatus and methods for isolating a wellbore junction |
| 12/30/2003 | US6668922 Method of optimizing the design, stimulation and evaluation of matrix treatment in a reservoir |
| 12/25/2003 | US20030234106 Downhole tool and method for fracturing a subterranean well formation |
| 12/25/2003 | US20030234104 Apparatus and methods for establishing secondary hydraulics in a downhole tool |
| 12/24/2003 | CN2594458Y Hydraulic driven operational booster under well |
| 12/24/2003 | CN2594457Y Rotary locking device of oil pipe |
| 12/18/2003 | US20030231017 Formation-based interpretation of NMR data for carbonate reservoirs |
| 12/17/2003 | EP1371811A2 Roller cone drill bit, method of designing the same and rotary drilling system |
| 12/17/2003 | EP0845071B1 Through-tubing lateral re-entry |
| 12/17/2003 | CN2592862Y Pumping unit polish rod power-saving break-reventing device |
| 12/17/2003 | CN2592861Y Workover rig derrick rear-leg support apparatus |
| 12/17/2003 | CN2592860Y Cable propelling apparatus |
| 12/17/2003 | CN2592859Y Self-locking protector of oil pipe coupled oil well cable spool |
| 12/16/2003 | US6662875 Induction choke for power distribution in piping structure |
| 12/16/2003 | CA2258064C Oilwell leak containment apparatus for a completed oilwell |
| 12/11/2003 | WO2003102371A1 Method and apparatus for effective well and reservoir evaluation without the need for well pressure history |
| 12/11/2003 | WO2003102362A1 Modeling simulation and comparison of models for wormhole formation during matrix stimulation of carbonates |
| 12/11/2003 | WO2003102348A2 Multi seam coal bed/methane dewatering and depressurizing production system |
| 12/11/2003 | US20030227393 Wireless power and communications cross-bar switch |
| 12/11/2003 | US20030226661 System for exploiting oilfields |
| 12/11/2003 | CA2486775A1 Modeling, simulation and comparison of models for wormhole formation during matrix stimulation of carbonates |