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Class Information
Number: 166/192
Name: Wells > Packers or plugs > Flow stopping type; e.g., plug
Description: Devices comprising means for blocking the flow of fluid either up or down or both in a surrounding well conduit by completely filling the bore of the conduit.










Sub-classes under this class:

Class Number Class Name Patents
166/193 Free falling type (e.g., dropped ball) 58


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8701756 Internal lockdown snubbing plug Apr. 22, 2014
8689834 System and method for capping a high pressure line Apr. 8, 2014
8689891 Ball and dart launcher with parallel axis release Apr. 8, 2014
8678081 Combination anvil and coupler for bridge and fracture plugs Mar. 25, 2014
8672041 Convertible downhole devices Mar. 18, 2014
8668006 Ball seat having ball support member Mar. 11, 2014
8662162 Segmented collapsible ball seat allowing ball recovery Mar. 4, 2014
8636059 Downhole circulating valve having a seal plug Jan. 28, 2014
8631876 Method of making and using a functionally gradient composite tool Jan. 21, 2014
8607883 Swellable packer having thermal compensation Dec. 17, 2013
8596362 Hydraulic fracturing methods and well casing plugs Dec. 3, 2013
8584746 Oilfield isolation element and method Nov. 19, 2013
8567494 Well operating elements comprising a soluble component and methods of use Oct. 29, 2013
8544551 Methods and devices for isolating wellhead pressure Oct. 1, 2013
8540032 Apparatus and method with hydrocarbon swellable and water swellable body Sep. 24, 2013
8519016 Lightweight foamed fly ash based binders and method Aug. 27, 2013
8469088 Drillable bridge plug for high pressure and high temperature environments Jun. 25, 2013
8459344 Bi-directional internal tubing plug Jun. 11, 2013
8418756 Well plug Apr. 16, 2013
8403047 In-situ zonal isolation for sand controlled wells Mar. 26, 2013
8397813 Device for a test plug Mar. 19, 2013
8376044 Plug device Feb. 19, 2013
8281860 Method and system for treating a subterranean formation Oct. 9, 2012
8276670 Downhole dissolvable plug Oct. 2, 2012
8251142 Super shoe swell packer Aug. 28, 2012
8240392 Use of foam shape memory polymer to transport acid or other wellbore treatments Aug. 14, 2012
8240384 Forming structures in a well in-situ Aug. 14, 2012
8231947 Oilfield elements having controlled solubility and methods of use Jul. 31, 2012
8205677 System and method for controlling underwater oil-well leak Jun. 26, 2012
8181701 Downhole tool with hydraulic closure seat May. 22, 2012
8096358 Method of perforating for effective sand plug placement in horizontal wells Jan. 17, 2012
8074715 Methods of setting particulate plugs in horizontal well bores using low-rate slurries Dec. 13, 2011
8047280 Drillable bridge plug Nov. 1, 2011
8028752 Plug setting and retrieving apparatus Oct. 4, 2011
8016033 Continuous flow drilling systems and methods Sep. 13, 2011
7909104 Sealing device Mar. 22, 2011
RE42137 Universal cementing plug Feb. 15, 2011
7854268 Deep water hurricane valve Dec. 21, 2010
7810558 Drillable bridge plug Oct. 12, 2010
7779925 Seal assembly energized with floating pistons Aug. 24, 2010
RE41508 Universal cementing plug Aug. 17, 2010
7775286 Convertible downhole devices and method of performing downhole operations using convertible downhole devices Aug. 17, 2010
7757757 In-well baffle apparatus and method Jul. 20, 2010
7757756 Bridge plug and setting tool Jul. 20, 2010
7748468 Sealing devices having a metal foam material and methods of manufacturing and using same Jul. 6, 2010
7740079 Fracturing plug convertible to a bridge plug Jun. 22, 2010
7703511 Pressure barrier apparatus Apr. 27, 2010
7699111 Float collar and method Apr. 20, 2010
7699100 Dropping sub method and apparatus Apr. 20, 2010
7690427 Sand plugs and placing sand plugs in highly deviated wells Apr. 6, 2010

1 2 3 4










 
 
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