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Class Information
Number: 166/902
Name: Wells > For inhibiting corrosion or coating
Description: Subject matter specialized to preventing or alleviating the effects of either (a) corrosion or (b) formation of a coating material on well equipment.

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8701766 Apparatus and methods for completing subterranean wells Apr. 22, 2014
8602113 Coated oil and gas well production devices Dec. 10, 2013
8590627 Coated sleeved oil and gas well production devices Nov. 26, 2013
8561707 Ultra-low friction coatings for drill stem assemblies Oct. 22, 2013
8418757 Corrosion management systems for vertically oriented structures Apr. 16, 2013
8413744 System and method for controlling the integrity of a drilling system Apr. 9, 2013
8286715 Coated sleeved oil and gas well production devices Oct. 16, 2012
8261841 Coated oil and gas well production devices Sep. 11, 2012
8062586 Methods and compositions for inhibiting metal corrosion Nov. 22, 2011
7932220 Water compatible hydraulic fluids Apr. 26, 2011
7721806 Automatic chemical treatment system with integral flush fluid dispenser and method for using the same May. 25, 2010
7654314 Chemical delivery system for plunger lift Feb. 2, 2010
7638469 Methods of increasing permeability in carbonatic rock formations with alkanesulfonic acids Dec. 29, 2009
7624805 Method of inhibiting corrosion in a conduit Dec. 1, 2009
7610962 Sour gas injection for use with in situ heat treatment Nov. 3, 2009
7597148 Formation and control of gas hydrates Oct. 6, 2009
7503389 Method and apparatus for downhole artificial lift system protection Mar. 17, 2009
7487840 Wear resistant layer for downhole well equipment Feb. 10, 2009
7481276 Method of inhibiting and/or preventing corrosion in oilfield treatment applications Jan. 27, 2009
7419003 Erosion resistant aperture for a downhole valve or ported flow control tool Sep. 2, 2008
7353873 Magnetic assemblies for deposit prevention and methods of use Apr. 8, 2008
7347258 Coated tools for use in oil well pipes Mar. 25, 2008
7318476 Automatic chemical treatment system with integral flush fluid dispenser Jan. 15, 2008
7284608 Casing strings and methods of using such strings in subterranean cementing operations Oct. 23, 2007
7216710 Thiol/aldehyde corrosion inhibitors May. 15, 2007
7195070 Method and apparatus for downhole artificial lift system protection Mar. 27, 2007
7185699 Water compatible hydraulic fluids Mar. 6, 2007
7144549 Biocide impregnation of coatings for ESP components Dec. 5, 2006
7131495 Method for preparing a chlorine dioxide block-removing agent in oil wells Nov. 7, 2006
7086469 Increasing reaction efficiency of acetic acid Aug. 8, 2006
7073588 Esterquat acidic subterranean treatment fluids and methods of using esterquats acidic subterranean treatment fluids Jul. 11, 2006
6989095 Fluid conditioner for reducing scale, corrosion and paraffin buildup in hydrocarbon piping Jan. 24, 2006
6894008 Method of increasing pH of high-density brines May. 17, 2005
6887840 Iron sulfide clean-up composition and method May. 3, 2005
6857477 Method for using a reciprocating pump vent-dump valve Feb. 22, 2005
6810957 Well constructions with inhibited microbial growth and methods of antimicrobial treatment in wells Nov. 2, 2004
6706669 Method for inhibiting corrosion using phosphorous acid Mar. 16, 2004
6619392 Blast joint assembly Sep. 16, 2003
6593278 Method for inhibiting corrosion using certain phosphorus and sulfur-free compounds Jul. 15, 2003
6583091 Method for inhibiting corrosion using 4-sulfophthalic acid Jun. 24, 2003
6559104 Method for inhibiting corrosion using certain aromatic acidic species May. 6, 2003
6537950 Method for inhibiting corrosion using triphenylstibine Mar. 25, 2003
6523615 Electropolishing method for oil field tubular goods and drill pipe Feb. 25, 2003
6419010 Deviated borehole drilling assembly Jul. 16, 2002
6334485 Deviated borehole drilling assembly Jan. 1, 2002
6321841 Methods of sealing pipe strings in disposal wells Nov. 27, 2001
6315045 Methods and acidizing compositions for reducing metal surface corrosion and sulfide precipitation Nov. 13, 2001
6279656 Downhole chemical delivery system for oil and gas wells Aug. 28, 2001
6213214 Pipeline treatment composites Apr. 10, 2001
6209643 Method of controlling particulate flowback in subterranean wells and introducing treatment chemicals Apr. 3, 2001

1 2 3 4 5 6

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