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Class Information
Number: 166/285
Name: Wells > Processes > Cementing, plugging or consolidating
Description: A process comprising (1) causing fluent material to flow into position in prepositioned well conduit substantially to stop flow of a fluid by forming a blocking means in situ, said material being plastic or hardenable after being so placed, (2) placing small particles in a prepositioned well conduit to cause them to form a mass of particles in situ substantially to stop flow of a fluid, (3) placing or forming solid or plastic material in the pores of or spaces in a formation to block them and thereby impede flow of an earth fluid, (4) treating a formation with an introduced material so as to prevent it from shifting or breaking down, i.e., consolidating the formation, or (5) treating a formation (e.g., by heating, etc.) to cause the formation to coalesce into an impermeable or consolidated mass.










Sub-classes under this class:

Class Number Class Name Patents
166/290 By tubing which is subsequently lifted 67
166/289 Discharging cement from casing at different levels 61
166/288 Including heating 142
166/287 Removable molding or forming means 31
166/286 Tamping, vibrating, exploding or using receptacle 75
166/292 Using specific materials 657
166/291 With piston separator 264


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8701766 Apparatus and methods for completing subterranean wells Apr. 22, 2014
8689872 Methods and compositions for controlling formation fines and reducing proppant flow-back Apr. 8, 2014
8689874 Visco-elastic surfactant spacers Apr. 8, 2014
8691737 Consolidating spacer fluids and methods of use Apr. 8, 2014
8685903 Lost circulation compositions and associated methods Apr. 1, 2014
8672029 System for reducing foam in mixing operations Mar. 18, 2014
8672030 System for cementing tubulars comprising a mud motor Mar. 18, 2014
8662159 Apparatus for isolating and completing multi-zone frac packs Mar. 4, 2014
8657005 Systems and methods for hydraulic barrier formation to improve sweep efficiency in subterranean oil reservoirs Feb. 25, 2014
8636067 Method and apparatus for performing cementing operations on top drive rigs Jan. 28, 2014
8623794 Slag compositions and methods of use Jan. 7, 2014
8621979 Lubrication system for a reciprocating apparatus Jan. 7, 2014
8623936 Weighted elastomers, cement compositions comprising weighted elastomers, and methods of use Jan. 7, 2014
8613319 Lost-circulation material made from a recycled material containing asphalt Dec. 24, 2013
8607895 Drilling fluid additive for reducing lost circulation in a drilling operation Dec. 17, 2013
8596056 Configurable hydraulic system Dec. 3, 2013
8584756 Methods of isolating annular areas formed by multiple casing strings in a well Nov. 19, 2013
8584758 Apparatus for fracturing of wells Nov. 19, 2013
8579031 Thermal processes for subsurface formations Nov. 12, 2013
8561700 Method and apparatus for cementing while running casing in a well bore Oct. 22, 2013
8561703 Compliant dart-style reverse-flow check valve Oct. 22, 2013
8546310 Density-matched suspensions and associated methods Oct. 1, 2013
8530393 Methods to characterize fracture plugging efficiency for drilling fluids Sep. 10, 2013
8524638 Method to characterize fracture plugging efficiency for drilling fluids Sep. 3, 2013
8518861 Solid zirconium-based cross-linking agent and use in oil field applications Aug. 27, 2013
8490695 Method for drilling and fracture treating multiple wellbores Jul. 23, 2013
8486869 Methods of plugging and abandoning a well using compositions comprising cement kiln dust and pumicite Jul. 16, 2013
8476203 Cement compositions comprising sub-micron alumina and associated methods Jul. 2, 2013
8470907 Additive for cementing wells Jun. 25, 2013
8459354 Self-sealing method Jun. 11, 2013
8455403 Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications Jun. 4, 2013
8453735 Method and biodegradable water based thinner composition for drilling subterranean boreholes with aqueous based drilling fluid Jun. 4, 2013
8439113 Pump in reverse outliner drilling system May. 14, 2013
8440596 Settable compositions comprising unexpanded perlite and methods of cementing in subterranean formations May. 14, 2013
8435930 Low density cementitious compositions using lime kiln dust May. 7, 2013
8424604 Methods and devices for forming a wellbore with casing Apr. 23, 2013
8424605 Methods and devices for casing and cementing well bores Apr. 23, 2013
8408303 Compositions for improving thermal conductivity of cement systems Apr. 2, 2013
8403047 In-situ zonal isolation for sand controlled wells Mar. 26, 2013
8397813 Device for a test plug Mar. 19, 2013
8394744 Low density cementitious compositions Mar. 12, 2013
8387688 Method of forming subterranean barriers with molten wax Mar. 5, 2013
8387693 Systems and methods for using a passageway through subterranean strata Mar. 5, 2013
8377853 Aqueous gels for well bore strengthening Feb. 19, 2013
8371370 Apparatus for isolating and completing multi-zone frac packs Feb. 12, 2013
8360141 Launching tool with interlock system for downhole cement plug and method Jan. 29, 2013
8360151 Methods for mitigation of annular pressure buildup in subterranean wells Jan. 29, 2013
8360145 Selective placement of conformance treatments in multi-zone well completions Jan. 29, 2013
8342243 Method for stage-cementing an oil well Jan. 1, 2013
8342244 Methods and apparatuses for releasing a chemical into a well bore upon command Jan. 1, 2013

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