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Class Information
Number: 166/311
Name: Wells > Processes > Cleaning or unloading well
Description: A process comprising (1) removing undesired deposited material from well apparatus, (2) removing undesired deposited material from an existing bore hole or cavity or surrounding formation or (3) removing undesired liquid standing in the well and impeding the production of the desired fluid from the earth.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7409995 |
Apparatus and method for washing tubular conduits during trip out of a conduit string from within a subterranean well |
Aug. 12, 2008 |
| 7395865 |
Gas lift plunger arrangement |
Jul. 8, 2008 |
| 7380597 |
Deployment of underground sensors |
Jun. 3, 2008 |
| 7377283 |
Coiled tubing wellbore cleanout |
May. 27, 2008 |
| 7371289 |
Cleaning and doping of tubulars |
May. 13, 2008 |
| 7360998 |
Method of cleaning out blockages which prevent operation of a reciprocating downhole tubing pump |
Apr. 22, 2008 |
| 7347259 |
Downhole oilfield erosion protection by using diamond |
Mar. 25, 2008 |
| 7316268 |
Method for conditioning wellbore fluids and sucker rod therefore |
Jan. 8, 2008 |
| 7314083 |
Slow rotation fluid jetting tool for cleaning a well bore |
Jan. 1, 2008 |
| 7311150 |
Method and system for cleaning a well bore |
Dec. 25, 2007 |
| 7306038 |
Well cleaning method and apparatus using detonating cord having additional reliability and a longer shelf life |
Dec. 11, 2007 |
| 7296627 |
Method for simultaneous removal of asphaltene, and/or paraffin and scale from producing oil wells |
Nov. 20, 2007 |
| 7287589 |
Well treatment system and method |
Oct. 30, 2007 |
| 7284612 |
Controlling transient pressure conditions in a wellbore |
Oct. 23, 2007 |
| 7279052 |
Method for hydrate plug removal |
Oct. 9, 2007 |
| 7273832 |
Alkali metal tungstate compositions and uses thereof |
Sep. 25, 2007 |
| 7270179 |
Method for stimulation of liquid flow in a well |
Sep. 18, 2007 |
| 7267169 |
Methods for forming a permeable and stable mass in a subterranean formation |
Sep. 11, 2007 |
| 7252096 |
Methods of simultaneously cleaning and disinfecting industrial water systems |
Aug. 7, 2007 |
| 7213648 |
Pressure-actuated perforation with continuous removal of debris |
May. 8, 2007 |
| 7210529 |
Casing brush tool |
May. 1, 2007 |
| 7198106 |
Method for enhancing gas well secondary recovery operations |
Apr. 3, 2007 |
| 7191835 |
Disengagable burr mill |
Mar. 20, 2007 |
| 7188675 |
Finger boot basket |
Mar. 13, 2007 |
| 7186673 |
Stability enhanced water-in-oil emulsion and method for using same |
Mar. 6, 2007 |
| 7182138 |
Reservoir communication by creating a local underbalance and using treatment fluid |
Feb. 27, 2007 |
| 7178593 |
Piggable separation system and method |
Feb. 20, 2007 |
| 7143829 |
Downhole tool |
Dec. 5, 2006 |
| 7121343 |
Selectively operational cleaning tool |
Oct. 17, 2006 |
| 7104323 |
Spiral tubular tool and method |
Sep. 12, 2006 |
| 7096950 |
Combined milling and scraping tool |
Aug. 29, 2006 |
| 7086470 |
System and method for wellbore clearing |
Aug. 8, 2006 |
| RE39209 |
Production fluid control device and method for oil and/or gas wells |
Aug. 1, 2006 |
| 7081438 |
Drilling fluids, drilling fluids additives and methods useful for limiting tar sands accretion on metal surfaces |
Jul. 25, 2006 |
| 7059411 |
Process of using a propellant treatment and continuous foam removal of well debris and apparatus therefore |
Jun. 13, 2006 |
| 7048055 |
Packer with integral cleaning device |
May. 23, 2006 |
| 7032674 |
Process for increasing flow capacity of gas wells |
Apr. 25, 2006 |
| 7028769 |
Well bore cleaning and tubular circulating and flow-back apparatus |
Apr. 18, 2006 |
| 7025143 |
Method for removing a deposit using pulsed fluid flow |
Apr. 11, 2006 |
| 7025142 |
Bi-directional thruster pig apparatus and method of utilizing same |
Apr. 11, 2006 |
| 7011157 |
Method and apparatus for cleaning a fractured interval between two packers |
Mar. 14, 2006 |
| 7000701 |
Compositions and methods for weighting a breaker coating for uniform distribution in a particulate pack |
Feb. 21, 2006 |
| 6982008 |
Coiled tubing wellbore cleanout |
Jan. 3, 2006 |
| 6978838 |
Method for removing filter cake from injection wells |
Dec. 27, 2005 |
| 6973972 |
Method for reduction of scale during oil and gas production and apparatus for practicing same |
Dec. 13, 2005 |
| 6973971 |
Down hole well cleaning apparatus |
Dec. 13, 2005 |
| 6972274 |
Method of improving the permeability of an underground petroleum-containing formation |
Dec. 6, 2005 |
| 6968898 |
System and method for removing particles from a well bore penetrating a possible producing formation |
Nov. 29, 2005 |
| 6929068 |
Non-cryogenic production of nitrogen for on-site injection in well clean out |
Aug. 16, 2005 |
| 6929069 |
Fracturing fluid and method of use |
Aug. 16, 2005 |
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