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1. 发明授权

US11767400B2 Manufacture of degradable polycyanurate bulk molding compositions 有权
公开(公告)号：US11767400B2
公开(公告)日：2023-09-26
申请号：US16994983
申请日：2020-08-17
申请人： Devesh Agrawal , Anil Sadana , Anton Kovalchuk
发明人： Devesh Agrawal , Anil Sadana , Anton Kovalchuk
IPC分类号： C08G73/06 , C08J5/04 , B29C70/06 , B29K79/00
CPC分类号： C08G73/065 , B29C70/06 , C08J5/041 , C08J5/042 , C08J5/043 , C08J5/046 , B29K2079/00 , C08G2230/00
摘要： A process for the manufacture of a degradable polycyanurate bulk molding composition includes: contacting a liquid cyanate ester monomer with an additive material and a polymerization catalyst to form a reaction mixture; maintaining a temperature of the reaction mixture at about 80° C. to about 100° C. to form a polycyanurate product having a viscosity of about 120 to about 200 centipoise at 23° C.; heating a reinforcing filler at a temperature of about 50 to about 150° C. to form a pre-heated reinforcing filler; and blending the polycyanurate product with the pre-heated reinforcing filler to form the degradable polycyanurate bulk molding composition. The bulk molding composition can be used to form a degradable polycyanurate article.

2. 发明申请

US20220010659A1 FILTRATION MEDIA INCLUDING POROUS POLYMERIC MATERIAL AND DEGRADABLE SHAPE MEMORY MATERIAL 有权
公开(公告)号：US20220010659A1
公开(公告)日：2022-01-13
申请号：US16927056
申请日：2020-07-13
申请人： Anil Sadana , Ping Duan
发明人： Anil Sadana , Ping Duan
IPC分类号： E21B43/08 , B01D71/32
摘要： A fluid control device includes a support structure configured to be deployed to a selected location in a borehole, and a filtration medium disposed at the support structure and configured to filter a fluid, the filtration medium configured to be compacted from an initial shape to a compacted shape prior to deployment in the borehole. The filtration medium includes a first polymeric material configured to withstand a temperature at the selected location, the first polymeric material forming a porous structure including a plurality of fluid passages, and a second polymeric material including a shape memory polymer disposed within the fluid passages, the shape memory polymer configured to expand in the plurality of fluid passages and cause the filtration medium to expand in the borehole.

3. 发明申请

US20220003084A1 EPOXY-BASED FILTRATION OF FLUIDS 有权
公开(公告)号：US20220003084A1
公开(公告)日：2022-01-06
申请号：US16919376
申请日：2020-07-02
申请人： Anton Kovalchuk , Anil Sadana , Soumya Vinod
发明人： Anton Kovalchuk , Anil Sadana , Soumya Vinod
IPC分类号： E21B43/08 , E21B43/34 , E21B43/38
摘要： A fluid control device includes a support structure configured to be deployed in a borehole and a filtration component disposed at the support structure. The filtration component includes a porous medium made from a shape memory epoxy, the shape memory epoxy including a soft segment monomer and a hard segment monomer, the porous medium configured to be compacted from an initial shape to a compacted shape, deployed in the borehole, and subsequently expanded due to a downhole temperature to conform to a surface of the borehole.

4. 发明授权

US10961427B2 Completion tools with fluid diffusion control layer 有权
公开(公告)号：US10961427B2
公开(公告)日：2021-03-30
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 , E21B33/127 , E21B33/12 , E21B43/08 , C04B26/04
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.

5. 发明授权

US10738560B2 Packers having controlled swelling and methods of manufacturing thereof 有权
公开(公告)号：US10738560B2
公开(公告)日：2020-08-11
申请号：US15496034
申请日：2017-04-25
申请人： Ping Duan , Anil Sadana , Wayne Furlan
发明人： Ping Duan , Anil Sadana , Wayne Furlan
IPC分类号： E21B33/12 , E21B23/06 , E21B23/00
摘要： A sealing system for a flow channel includes a mandrel, a swellable element disposed about the mandrel, and a degradable polymeric element disposed on a surface of the swellable element and configured to delay swelling of the swellable element. The degradable polymeric element comprises one or more of the following: polyurethane; cured cyanate ester; an epoxy; polyimide; unsaturated polyester; or nylon.

6. 发明授权

US09777550B2 Degradable casing seal construction for downhole applications 有权
公开(公告)号：US09777550B2
公开(公告)日：2017-10-03
申请号：US14552003
申请日：2014-11-24
申请人： James Doane , Wayne Furlan , Ping Duan , Sayantan Roy , Anil Sadana
发明人： James Doane , Wayne Furlan , Ping Duan , Sayantan Roy , Anil Sadana
IPC分类号： E21B33/12
CPC分类号： E21B33/1208
摘要： In one aspect, a degradable apparatus is disclosed, including: an inner core with a first degradation rate in a downhole environment; an outer sheath disposed around an outer extent of the inner core with a second degradation rate less than the first degradation rate in the downhole environment. In another aspect, a method of temporarily sealing a downhole zone is disclosed, including: providing an inner core with a first degradation rate in a downhole environment; providing an outer sheath disposed around an outer extent of the inner core with a second degradation rate less than the first degradation rate in the downhole environment; sealing the downhole zone with the outer sheath; exposing the outer sheath to the downhole environment; and exposing the inner core to the downhole environment.

7. 发明申请

US20160145485A1 DEGRADABLE MATERIAL FOR DOWNHOLE APPLICATIONS 审中-公开
标题翻译：可降解材料用于井下应用
公开(公告)号：US20160145485A1
公开(公告)日：2016-05-26
申请号：US14551976
申请日：2014-11-24
申请人： James Doane , Wayne Furlan , Ping Duan , Sayantan Roy , Anil Sadana
发明人： James Doane , Wayne Furlan , Ping Duan , Sayantan Roy , Anil Sadana
IPC分类号： C09K8/508 , E21B33/12
CPC分类号： C09K8/5086 , C09K8/524 , E21B33/1208 , E21B33/134 , E21B43/26
摘要： In one aspect, degradable material is disclosed, including: a polyurethane component with a first degradation rate in a downhole environment; and a corrosive additive component with a second degradation rate that is higher than a first degradation rate in the downhole environment. In another aspect, a method of temporarily sealing a downhole zone is disclosed, including: providing a polyurethane component with a first degradation rate in a downhole environment; providing a corrosive additive component with a second degradation rate that is higher than a first degradation rate in the downhole environment; mixing the polyurethane component and the corrosive additive component to form a degradable material; sealing the downhole zone with the degradable material; exposing the degradable material to the downhole environment; and degrading the degradable material.
摘要翻译：一方面，公开了可降解材料，包括：在井下环境中具有第一降解速率的聚氨酯组分; 以及具有比井下环境中的第一降解速率高的第二降解速率的腐蚀性添加剂组分。另一方面，公开了临时密封井下区域的方法，包括：在井下环境中提供具有第一降解速率的聚氨酯组分; 提供具有比井下环境中的第一降解速率高的第二降解速率的腐蚀性添加剂组分; 混合聚氨酯组分和腐蚀性添加剂组分以形成可降解材料; 用可降解材料密封井下区域; 将可降解材料暴露于井下环境; 并降解可降解材料。

8. 发明申请

US20070196262A1 Reductive functionalization of carbon nanotubes 有权
标题翻译：碳纳米管的还原官能化
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。

9. 发明申请

US20220243566A1 CONFORMABLE SAND SCREEN 有权
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.

10. 发明申请

US20190331466A1 SYSTEM AND METHOD FOR ALTERING A BURN RATE OF A PROPELLANT 审中-公开
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.

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