Patents for E21B 41 - Equipment or details not covered by groups (7,984)
12/2006
12/14/2006WO2006132541A1 Subsea compression system
12/14/2006US20060278396 Method for intercepting and connecting underground formations and method for producing and/or injecting hydrocarbons through connecting underground formations
12/13/2006EP1730663A2 Providing a local response to a local condition in an oil well
12/13/2006EP1730613A1 Method and apparatus and program storage device including an integrated well planning workflow control system with process dependencies
12/13/2006EP1730386A2 Rotating systems associated with drill pipe
12/12/2006US7149339 Non-destructive inspection of downhole equipment
12/12/2006CA2281847C Drilling assembly with reduced stick-slip tendency
12/12/2006CA2216430C Hydrocarbon production using multilateral well bores
12/07/2006WO2005101060A3 Method of managing multiple wells in a reservoir
12/07/2006US20060272861 Method for improving drilling depth measurements
12/07/2006US20060272809 Wellbores utilizing fiber optic-based sensors and operating devices
12/06/2006EP1728967A1 Updating method for a geological model using seismic and production data
12/06/2006CN2844426Y Waste-oil and waste-water recovering treater
12/06/2006CA2549537A1 Intelligent system for use in subterranean drilling applications
11/2006
11/30/2006US20060266553 Method for improving drilling depth measurements
11/30/2006US20060266552 Method for improving drilling depth measurements
11/30/2006US20060266531 Sealed branch wellbore transition joint
11/29/2006EP1725968A1 Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data
11/29/2006CN1871408A Nozzle unit and method for excavating a hole in an object
11/28/2006US7142986 System for optimizing drilling in real time
11/28/2006US7141901 Downhole torque-generating and generator combination apparatus
11/28/2006US7140452 Method and apparatus for determining drill string movement mode
11/28/2006CA2427034C Expanding wellbore junction
11/24/2006CA2553460A1 Method and apparatus for restraining tubular members during well servicing
11/23/2006WO2006123109A1 Device and method for retrieving debris from a well
11/23/2006WO2006123086A1 Underwater deployment system
11/23/2006US20060263215 Roll stabilised unit
11/23/2006US20060260803 Downhole Connection System
11/23/2006CA2608292A1 Device and method for retrieving debris from a well
11/21/2006CA2547036A1 Roll stabilished unit
11/21/2006CA2320027C Safety slip ram
11/21/2006CA2260448C Apparatus and methods for sealing a wellbore junction
11/16/2006WO2006120466A2 Apparatus for controlling a downhole device
11/16/2006US20060254778 Method and system for tubing a borehole in single diameter
11/16/2006CA2604229A1 Apparatus for controlling a downhole device
11/14/2006US7135440 Method for controlled placement of oilfield chemicals and composition useful for practicing same
11/14/2006US7134353 Method and apparatus for determining system integrity for an oilfield machine
11/14/2006CA2385795C Assembly and method for locating lateral wellbores
11/14/2006CA2349223C Method and apparatus for connecting a lateral branch liner to a main well bore
11/14/2006CA2348468C Mercaptoalcohol corrosion inhibitors
11/13/2006CA2545984A1 Filtering and boosting a signal from a drive circuit
11/09/2006WO2005021920B1 Downhole tubular splitter assembly and method
11/09/2006CA2606428A1 Rotary steerable motor system for underground drilling
11/08/2006EP1719875A2 Pyrolytic oil-productivity index method for predicting reservoir rock and oil characteristics
11/08/2006EP1718841A1 Annular pressure relief collar
11/08/2006EP1718839A1 System tank and output unit for transporting untreated drill cuttings
11/08/2006CN1283894C Method for applying chemical anchoring adhesion
11/08/2006CN1283893C Electrical well heating system and method
11/08/2006CN1283892C Electrical transmission system for multilateral well
11/07/2006US7133325 Apparatus and method for generating electrical power in a borehole
11/07/2006US7131495 adding chlorates or stable chlorine dioxide and water into one tank; in another tank adding acidic substances, which can be dissolved in water and produce hydrogen ion in an aqueous solution; providing a high pressure injection pump
11/07/2006US7131493 Methods of using sealants in multilateral junctions
11/02/2006WO2006114609A1 Pressure responsive centralizer
11/02/2006WO2005124397B1 Apparatus and methods for self-powered communication and sensor network
11/02/2006WO2005083026A3 Esterquat acidic subterranean treatment fluids and methods of using esterquats acidic subterranean treatment fluids
11/02/2006US20060243489 System and method for damping vibration in a drill string
11/02/2006EP1390602B1 Apparatus and method for the treatment of waste products
10/2006
10/31/2006US7128142 Apparatus and methods for improved fluid displacement in subterranean formations
10/31/2006CA2221463C Downhole apparatus for generating electrical power in a well
10/31/2006CA2184322C Multiple lateral hydrocarbon recovery system and method
10/24/2006US7124838 Gripping assembly for impact hammer
10/18/2006EP1712727A1 Method of completing a subterranean well and associated apparatus
10/18/2006EP1415066B1 Completion of lateral well bores
10/17/2006CA2250030C Method of assaying downhole occurrences and conditions
10/12/2006WO2006106280A1 Apparatus and method for transferring fluids from a floating vessel to a subsea intervention module
10/11/2006EP1710393A2 Method and apparatus for controlling fluid flow in subterranean formations
10/11/2006EP1259708B1 Wireless power and communications cross-bar switch
10/11/2006EP1252414B1 Method and operating devices having expandable element actuators
10/11/2006CN2825939Y Full-automatic chemicals charging apparatus
10/05/2006US20060224368 Force-balanced roller-cone bits, systems, drilling methods, and design methods
10/05/2006DE102004004689B4 Verfahren und eine Anordnung zur Speicherung und dauerhaften Fixierung von in Wasser gelöstem CO2 in geologischen Formationen Method and apparatus for storing and permanent fixation of CO2 dissolved in water in geological formations
10/04/2006CN2824391Y Cable protector
10/04/2006CN1278016C Method and system for treating hydrocarbon contg. formation, and method for generating energy therefrom and pyrolysis products therefrom
10/04/2006CN1278015C Heating system and method
10/03/2006US7114579 System and method for interpreting drilling date
10/03/2006US7114578 Method and apparatus for determining drill string movement mode
10/03/2006US7114577 Safemode operating system for a drilling or service rig
10/03/2006US7114557 System and method for optimizing production in an artificially lifted well
10/03/2006CA2326489C Drillstring with stabilisers for re-entering a primary wellbore
09/2006
09/30/2006CA2541103A1 Method system and program storage device for simulating a multilayer reservoir and partially active elements in a hydraulic fracturing simulator
09/26/2006US7112009 Apparatus and method for horizontal subsea connection
09/21/2006WO2005086565A3 Leadless sub assembly for downhole detection system
09/21/2006US20060207759 Protection scheme and method for deployment of artificial lift devices in a wellbore
09/20/2006EP1703075A1 Downhole deflector member
09/19/2006US7108069 Online thermal and watercut management
09/19/2006US7108067 Method and apparatus for wellbore fluid treatment
09/19/2006US7108065 Technique for preventing deposition products from impeding the motion of a movable component
09/19/2006CA2415637C Well management system
09/19/2006CA2391914C Servicing system for wells
09/19/2006CA2322884C A non-rotating sensor assembly for measurement-while-drilling
09/19/2006CA2276823C Conductivity anisotropy estimation method for inversion processing of measurements made by a transverse electromagnetic induction logging instrument
09/19/2006CA2229109C Methods of completing a subterranean well and associated apparatus
09/14/2006WO2006096732A1 Method and apparatus for slurry and operation design in cuttings re-injection
09/13/2006EP1701001A1 Integrated reservoir optimization
09/12/2006US7104332 Method and apparatus for creating a cemented lateral junction system
09/12/2006CA2395177C Controlling fluid flow in conduits
09/08/2006WO2005111371A3 Uncollapsed expandable wellbore junction
09/07/2006US20060196696 Electrically sequenced tractor
09/07/2006US20060196694 Electrically sequenced tractor
09/06/2006EP1509674B1 Modeling, simulation and comparison of models for wormhole formation during matrix stimulation of carbonates
1 ... 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 ... 80