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Class Information
Number: 166/177.4
Name: Wells > Cementing device
Description: Apparatus comprising specific structure for agitating, vibrating or mixing a slurry used to fix or adhere a pipe to a formation or to another pipe in a well.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8672030 System for cementing tubulars comprising a mud motor Mar. 18, 2014
8657004 Sliding stage cementing tool Feb. 25, 2014
8651174 Method and apparatus for dropping a pump down plug or ball Feb. 18, 2014
8622130 Method and apparatus for dropping a pump down plug or ball Jan. 7, 2014
8622131 Equipment for remote launching of cementing plugs Jan. 7, 2014
8607859 Method of drilling and running casing in large diameter wellbore Dec. 17, 2013
8590611 Combination swivel and ball dropper Nov. 26, 2013
8573301 Method and apparatus for dropping a pump down plug or ball Nov. 5, 2013
8567511 Method and apparatus for running casing in a wellbore with a fluid driven rotatable shoe Oct. 29, 2013
8555960 Pressure actuated ported sub for subterranean cement completions Oct. 15, 2013
8499837 Nanoparticle-densified Newtonian fluids for use as cementation spacer fluids and completion spacer fluids in oil and gas wells Aug. 6, 2013
8479818 Method and apparatus to cement a perforated casing Jul. 9, 2013
8469093 Apparatus and method for autofill equipment activation Jun. 25, 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
8408302 Double swivel apparatus and method Apr. 2, 2013
8403078 Methods and apparatus for wellbore construction and completion Mar. 26, 2013
8356661 Combination swivel and ball dropper Jan. 22, 2013
8342243 Method for stage-cementing an oil well Jan. 1, 2013
8342251 Shoe for wellbore lining tubing Jan. 1, 2013
8327933 Arrangement and method for sending and/or sealing cement at a liner hanger Dec. 11, 2012
8327937 Equipment for remote launching of cementing plugs Dec. 11, 2012
8307898 Method and apparatus for cementing a liner in a borehole using a tubular member having an obstruction Nov. 13, 2012
8297348 Seal configuration for top drive swivel apparatus and method Oct. 30, 2012
8281878 Method of drilling and running casing in large diameter wellbore Oct. 9, 2012
8281858 Shot perforator device and method for water well bore decommissioning Oct. 9, 2012
8256515 Method and apparatus for dropping a pump down plug or ball Sep. 4, 2012
8220544 Cementing with electric line coiled tubing Jul. 17, 2012
8215396 Method and apparatus for dropping a pump down plug or ball Jul. 10, 2012
8201627 Double swivel apparatus and method Jun. 19, 2012
8196650 Combination swivel and ball dropper Jun. 12, 2012
8186437 Assembly for controlled delivery of downhole treatment fluid May. 29, 2012
8162061 Subsea inflatable bridge plug inflation system Apr. 24, 2012
8162055 Methods of activating compositions in subterranean zones Apr. 24, 2012
8162047 Reverse-circulation cementing of surface casing Apr. 24, 2012
8157008 Cement evaluation method and tool Apr. 17, 2012
8146663 Seal configuration for top drive swivel apparatus and method Apr. 3, 2012
8096357 Casing make-up and running tool adapted for fluid and cement control Jan. 17, 2012
8091628 Apparatus and method for providing fluid and projectiles to downhole tubulars Jan. 10, 2012
8091641 Method and apparatus to cement a perforated casing Jan. 10, 2012
8082982 Methods and devices for forming a wellbore with casing Dec. 27, 2011
8066069 Method and apparatus for wellbore construction and completion Nov. 29, 2011
8047290 Double swivel apparatus and method Nov. 1, 2011
RE42877 Methods and apparatus for wellbore construction and completion Nov. 1, 2011
7987905 One trip cemented expandable monobore liner system and method Aug. 2, 2011
7971639 Device for conducting cementing operations and inflow regulation Jul. 5, 2011
7918278 Method and apparatus for dropping a pump down plug or ball Apr. 5, 2011
7913760 Seal configuration for top drive swivel apparatus and method Mar. 29, 2011
7886831 Apparatus for radially expanding and plastically deforming a tubular member Feb. 15, 2011
7866390 Casing make-up and running tool adapted for fluid and cement control Jan. 11, 2011

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