E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Patents for E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (13,780)
11/2004
11/30/2004	US6823950 Method for formation pressure control while drilling
11/25/2004	WO2004101950A1 Flow control device
11/25/2004	WO2004101704A1 Well-treating method to prevent or cure lost-circulation
11/25/2004	WO2004101473A2 Under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes
11/25/2004	WO2004085788A3 Method and arrangement for performing drilling operations
11/25/2004	WO2004051055A3 Welbore cleanout tool and method
11/25/2004	US20040231891 Waste mud agitation system
11/25/2004	US20040231889 System for controlling the discharge of drilling fluid
11/25/2004	US20040231846 Reverse circulation cementing process
11/25/2004	US20040231840 Controlling Transient Pressure Conditions In A Wellbore
11/25/2004	CA2523472A1 Well treating method to prevent or cure lost-circulation
11/23/2004	US6823238 Drilling mud reclamation system including first stage centrifuge for separating heavy weight solid components, forming liquid discharge which passes to second stage centrifuge for removing lighter weight solid components
11/23/2004	US6820702 Automated method and system for recognizing well control events
11/23/2004	US6820697 Downhole bypass valve
11/23/2004	US6820695 Snap-lock seal for seal valve assembly
11/23/2004	CA2193791C Portable liquid mud plant
11/20/2004	CA2467358A1 Packing assembly for rotary drilling swivels and pumps having rotating shafts
11/18/2004	US20040229758 Water block removal wih surfactant based hydrocarbonaceous liquid system
11/18/2004	US20040226751 Drill shoe
11/18/2004	US20040226749 Latching system for maintaining position of component within a downhole drill string section
11/18/2004	US20040226746 Method and system for minimizing circulating fluid return losses during drilling of a well bore
11/18/2004	US20040226719 Method for making a well for removing fluid from a desired subterranean formation
11/17/2004	EP1476258A1 THERMAL PROCESS FOR TREATING HYDROCARBON−CONTAMINATED DRILL CUTTINGS
11/17/2004	CN2656615Y Low flow pressure oil extraction machine well high efficiency well cleaning device
11/17/2004	CN2656614Y Slurry mixing system
11/17/2004	CN2656613Y Balanced elliptic motion well drilling liquid vibration screen
11/16/2004	US6817426 Emulsification; encapsulating drops in silica
11/11/2004	WO2004097165A1 Flushing device
11/11/2004	WO2004097155A2 Casing with isolated annular space
11/11/2004	WO2004096940A1 Water block removal with surfactant based hydrocarbonaceous liquid system
11/11/2004	US20040221997 Methods and apparatus for wellbore construction and completion
11/10/2004	EP1475514A1 Testing drill packer
11/09/2004	US6815399 Emulsion comprising oil, emulsifier, cement, water, polysaccharide, and divalent metal compound crosslinker
11/09/2004	US6814166 Direct push drilling swivel and method for its use
11/09/2004	US6814165 Hard rock drilling device and method
11/09/2004	US6814142 Well control using pressure while drilling measurements
11/09/2004	CA2414321C Shale bin/settling tank/centrifuge combination skid
11/09/2004	CA2352025C Method and apparatus for removing gas from drilling mud
11/04/2004	WO2004094771A2 Vibratory screening machine for earth drilling installation
11/04/2004	US20040220742 Real-time method for maintaining formation stability and monitoring fluid-formation interaction
11/04/2004	US20040216883 Fluid flow switching device
11/04/2004	CA2627842A1 Vibratory screening machine for earth drilling installation
11/03/2004	EP1473434A1 Underbalanced well completion
11/03/2004	EP1153196B1 Casing mounted sensors
11/03/2004	EP1071862B1 Rotating subsea diverter
11/03/2004	CN2653117Y Swirl jet mixer
11/03/2004	CN1543531A Injecting a fluid into a borehole ahead of the bit
11/02/2004	US6810960 Methods for increasing production from a wellbore
11/02/2004	US6810958 Circulating cementing collar and method
11/02/2004	CA2351159C Float valve assembly for downhole tubulars
11/02/2004	CA2342657C Zero drill completion and production system
11/02/2004	CA2142536C Oil and gas well cuttings disposal system
10/2004
10/28/2004	WO2004092633A2 Spoolable composite coiled tubing connector
10/28/2004	WO2004092544A2 Method and apparatus for increasing drilling capacity and removing cuttings when drilling with coiled tubing
10/28/2004	WO2004092534A1 Method to recover brine from drilling fluids
10/28/2004	WO2004092528A2 Apparatus for radially expanding and plastically deforming a tubular member
10/28/2004	US20040211563 Mixture of hollow particles in fluid; well completion
10/28/2004	CA2523654A1 Apparatus for radially expanding and plastically deforming a tubular member
10/27/2004	CN1540131A Integrated self water-feeding system combined with engineering drilling machine
10/26/2004	US6808354 Tank having multiple screw-type transfer augers
10/26/2004	US6808030 Enlargement drilling system
10/26/2004	US6808023 Disconnect check valve mechanism for coiled tubing
10/26/2004	US6807854 Method of determining the thermal profile of a drilling fluid in a well
10/21/2004	WO2004089608A2 Apparatus for radially expanding and plastically deforming a tubular member
10/21/2004	US20040209781 Method to recover brine from drilling fluids
10/21/2004	US20040208732 Tank having multipe screw-type transfer augers
10/21/2004	US20040206673 Vibratory screening machine for earth drilling installation
10/21/2004	US20040206548 Active controlled bottomhole pressure system & method
10/21/2004	US20040206500 Cementing system and method for wellbores
10/21/2004	US20040206496 Testing drill packer
10/21/2004	CA2523500A1 Apparatus for radially expanding and plastically deforming a tubular member
10/20/2004	EP1469281A2 Electronic surveying apparatus
10/20/2004	EP0960259B1 Aphron-containing well drilling and servicing fluids
10/20/2004	CN1538147A Electronic measuring device
10/19/2004	US6806233 Methods of using reversible phase oil based drilling fluid
10/16/2004	CA2463413A1 Testing drill packer
10/14/2004	WO2003071091A8 Dynamic annular pressure control apparatus and method
10/14/2004	US20040200091 Process and means for drying of sticky materials
10/13/2004	EP1466071A1 Soil cleaning systems and methods
10/13/2004	EP1466070A1 Two string drilling system
10/13/2004	EP0901562B1 Downhole apparatus
10/13/2004	CN2648041Y Flushing well device
10/13/2004	CN1536198A Method for measuring downhole pressure in the course of drilling operation and its equipment
10/12/2004	US6802379 Liquid lift method for drilling risers
10/12/2004	US6802374 Reverse cementing float shoe
10/07/2004	WO2004085793A1 Wellbore annulus flushing valve
10/07/2004	WO2004085788A2 Method and arrangement for performing drilling operations
10/07/2004	US20040195153 Method for the removal and recovery of the oily component from drill cuttings with liquid CO2
10/07/2004	US20040195152 Method for the removal and recovery of the oily component from drill cuttings
10/07/2004	US20040195007 Method and apparatus for increasing drilling capacity and removing cuttings when drilling with coiled tubing
10/07/2004	US20040194965 Apparatus and method for facilitating the connection of tubulars using a top drive
10/05/2004	US6799645 Method and apparatus for drilling and completing a well with an expandable sand control system
10/05/2004	CA2307386C Torque boost apparatus and method for top drive drilling systems
10/05/2004	CA2288103C Downhole surge pressure reduction system and method of use
09/2004
09/30/2004	WO2004083597A1 Apparatus and method for moving drilled cuttings
09/30/2004	WO2004083596A1 System and method for treating drilling mud in oil and gas well drilling applications
09/30/2004	WO2004083595A2 Substantially neutrally buoyant and positively buoyant electrically heated flowlines for production of subsea hydrocarbons
09/30/2004	WO2004083590A2 Method and apparatus for drilling a borehole with a borehole liner
09/30/2004	US20040191020 Method and apparatus for a boring bar and kelly valve
09/30/2004	US20040188145 Apparatus and methods for drilling

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