公开(公告)号：US20070196262A1

公开(公告)日：2007-08-23

申请号：US10592463

申请日：2005-03-11

申请人： Edward Billups ,  Anil Sadana ,  Feng Liang ,  Robert Hauge

发明人： Edward Billups ,  Anil Sadana ,  Feng Liang ,  Robert Hauge

IPC分类号： C01B31/02

CPC分类号： B82Y40/00 ,  B82Y30/00 ,  C01B32/05 ,  C01B32/152 ,  C01B32/174 ,  C01B2202/02 ,  C01B2202/36 ,  C01P2002/82 ,  C01P2002/88 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/13

摘要： The present invention is directed to novel processes for the functionalization (derivatization) of carbon nanotubes and, as an extension, to fullerenes and other carbon surfaces. Generally, such processes involve reductive pathways. In some embodiments, carbon nanotubes are reacted with alkali metal and organic halides in anhydrous liquid ammonia. In other embodiments, polymers are grown from carbon nanotube sidewalls by reacting carbon nanotubes with alkali metal and monomer species in anhydrous liquid ammonia.

摘要翻译： 本发明涉及用于碳纳米管的功能化（衍生化）和作为对富勒烯和其它碳表面的延伸的新方法。 通常，这些方法涉及还原途径。 在一些实施方案中，碳纳米管与碱金属和有机卤化物在无水液态氨中反应。 在其它实施方案中，通过使碳纳米管与碱金属和单体物质在无水液态氨中反应，从碳纳米管侧壁生长聚合物。

公开(公告)号：US11725487B2

公开(公告)日：2023-08-15

申请号：US17167664

申请日：2021-02-04

申请人： Anton Kovalchuk ,  Anil Sadana

发明人： Anton Kovalchuk ,  Anil Sadana

IPC分类号： E21B43/10 ,  E21B43/08

CPC分类号： E21B43/108 ,  E21B43/082 ,  E21B2200/08

摘要： A sand control tool including a base pipe having a radial port through a wall thereof, a plurality of volume increasing members disposed upon the base pipe, a filtration segment disposed upon the base pipe and disposed between and in physical contact with ones of the plurality of members, and a cover disposed radially outwardly upon the plurality of members and plurality of segments. An embodiment of a sand control tool including a base pipe having a radial port through a wall thereof, a volume increasing member helically disposed upon the base pipe, a filtration segment helically disposed upon the base pipe adjacent the member, and a cover disposed radially outwardly upon the member and segment.

公开(公告)号：US20210324713A1

公开(公告)日：2021-10-21

申请号：US17231255

申请日：2021-04-15

申请人： Anton Kovalchuk ,  Anil Sadana

发明人： Anton Kovalchuk ,  Anil Sadana

IPC分类号： E21B43/10 ,  C08L33/08 ,  C08L31/02 ,  C08L29/04 ,  C08L97/02 ,  B01D39/16 ,  B01D29/15

摘要： An apparatus includes an expandable and porous filtration member having a body constructed of a composite containing a polymer hydrogel, a rubber binder, and a filler. The body has a first volume and expandable to a second volume upon contacting with a fluid comprising water.

公开(公告)号：US20180120066A1

公开(公告)日：2018-05-03

申请号：US15340429

申请日：2016-11-01

申请人： Suman Khatiwada ,  John Welch ,  Anil Sadana ,  Ramon Garza

发明人： Suman Khatiwada ,  John Welch ,  Anil Sadana ,  Ramon Garza

IPC分类号： F42B3/04 ,  F42B3/22

CPC分类号： F42B3/04 ,  E21B23/065 ,  F42B3/22

摘要： A system and apparatus for providing an apparatus for use in a wellbore. The apparatus includes an apparatus body defining a volume, a propellant disposed within the volume, wherein the propellant has a first burn rate, and at least one propellant insert disposed within the propellant, wherein the propellant insert has a second burn rate, and the second burn rate is different than the first burn rate.

公开(公告)号：US11261283B2

公开(公告)日：2022-03-01

申请号：US16400400

申请日：2019-05-01

申请人： Ping Duan ,  Anil Sadana

发明人： Ping Duan ,  Anil Sadana

IPC分类号： C08G18/10 ,  E21B41/00 ,  E21B33/14 ,  E21B37/02 ,  C08G18/42 ,  C08G18/32 ,  C08G18/66 ,  C08G18/76 ,  C08G18/48

摘要： A method for operation in wellbore, the method comprises: pumping a fluid barrier into a wellbore through a tubular, the fluid barrier being operable to separate a cement slurry from a second fluid; the fluid barrier comprising a polyurethane member derived from a polyurethane forming composition comprising a para-phenylene diisocyanate terminated polycarbonate prepolymer and an aromatic diol.

公开(公告)号：US20200299568A1

公开(公告)日：2020-09-24

申请号：US16357547

申请日：2019-03-19

申请人： Deepak Kumar ,  Anil Sadana ,  Michael Johnson

发明人： Deepak Kumar ,  Anil Sadana ,  Michael Johnson

IPC分类号： C09K8/64 ,  C09K8/80 ,  E21B43/26 ,  E21B43/267 ,  E21B33/12

摘要： A method for operating in a borehole comprises disposing in a downhole environment a system comprising a tubular having a passage and a first restriction positioned inside the tubular; engaging a restrictor with the first restriction to block the passage; injecting a treatment fluid into the tubular, the treatment fluid comprising an invert emulsion, a carboxylic acid ester, or a combination comprising at least one of the foregoing; and degrading and removing the first restriction.

公开(公告)号：US20170122073A1

公开(公告)日：2017-05-04

申请号：US14931916

申请日：2015-11-04

申请人： Anil Sadana ,  Vipul Mathur ,  James Edward Goodson ,  John C. Welch

发明人： Anil Sadana ,  Vipul Mathur ,  James Edward Goodson ,  John C. Welch

IPC分类号： E21B41/00 ,  C09D165/04

CPC分类号： E21B41/00 ,  C08G2261/146 ,  C08G2261/3424 ,  C08G2261/598 ,  C08G2261/62 ,  C09D165/04

摘要： A downhole article comprises a polymer substrate having a surface that is configured for exposure to a well fluid; the substrate comprising a thermoplastic material, an elastomer, or a combination comprising at least one of the foregoing; and a coating disposed on the surface of the polymer substrate; the coating comprising a fluorinated poly-para-xylylene.

公开(公告)号：US20220243566A1

公开(公告)日：2022-08-04

申请号：US17167664

申请日：2021-02-04

申请人： Anton Kovalchuk ,  Anil Sadana

发明人： Anton Kovalchuk ,  Anil Sadana

IPC分类号： E21B43/10 ,  E21B43/08

摘要： A sand control tool including a base pipe having a radial port through a wall thereof, a plurality of volume increasing members disposed upon the base pipe, a filtration segment disposed upon the base pipe and disposed between and in physical contact with ones of the plurality of members, and a cover disposed radially outwardly upon the plurality of members and plurality of segments. An embodiment of a sand control tool including a base pipe having a radial port through a wall thereof, a volume increasing member helically disposed upon the base pipe, a filtration segment helically disposed upon the base pipe adjacent the member, and a cover disposed radially outwardly upon the member and segment.

公开(公告)号：US20190331466A1

公开(公告)日：2019-10-31

申请号：US16508109

申请日：2019-07-10

申请人： Suman Khatiwada ,  John Welch ,  Anil Sadana ,  Ramon Garza

发明人： Suman Khatiwada ,  John Welch ,  Anil Sadana ,  Ramon Garza

IPC分类号： F42B3/04 ,  F42B3/22 ,  E21B23/06

摘要： A system and apparatus for providing an apparatus for use in a wellbore. The apparatus includes an apparatus body defining a volume, a propellant disposed within the volume, wherein the propellant has a first burn rate, and at least one propellant insert disposed within the propellant, wherein the propellant insert has a second burn rate, and the second burn rate is different than the first burn rate.

公开(公告)号：US20190092998A1

公开(公告)日：2019-03-28

申请号：US15712203

申请日：2017-09-22

申请人： Anton Kovalchuk ,  Anil Sadana

发明人： Anton Kovalchuk ,  Anil Sadana

IPC分类号： C09K8/44 ,  C04B24/28 ,  C04B18/24 ,  C04B26/04 ,  E21B33/12 ,  E21B43/08 ,  E21B33/127

摘要： A completion tool comprises a mandrel; a swellable element disposed about the mandrel; and a protective layer disposed on a surface of the swellable element and configured to inhibit diffusion of a downhole fluid to the swellable element; the protective layer comprising a degradable textile-based composite.