公开(公告)号：US20130009339A1

公开(公告)日：2013-01-10

申请号：US13179230

申请日：2011-07-08

Applicant: Jiaxiang Ren ,  David Peter Gerrard ,  James Edward Goodson ,  Ping Duan ,  Lillian Guo

Inventor： Jiaxiang Ren ,  David Peter Gerrard ,  James Edward Goodson ,  Ping Duan ,  Lillian Guo

IPC: B29C43/14 ,  C08L81/04 ,  C08G75/14

CPC classification number: C08G75/14 ,  B29C43/003 ,  C08L81/04

Abstract: A method of preparing a cured thermoplastic material includes curing a thermoplastic polymer having a thermal decomposition temperature greater than or equal to about 200° C., at a temperature of about 200° C. to about 400° C., for a total time of less than or equal to 200 hours. A method of making a shape memory material also includes curing a thermoplastic polymer to prepare a cured thermoplastic material.

Abstract translation: 制备固化的热塑性材料的方法包括在约200℃至约400℃的温度下固化热分解温度大于或等于约200℃的热塑性聚合物，总共时间为 小于或等于200小时。 制备形状记忆材料的方法还包括固化热塑性聚合物以制备固化的热塑性材料。

公开(公告)号：US20120305238A1

公开(公告)日：2012-12-06

申请号：US13118998

申请日：2011-05-31

Applicant: Ping Duan ,  Gaurav Agrawal ,  Casey Walls

Inventor： Ping Duan ,  Gaurav Agrawal ,  Casey Walls

IPC: E21B33/12 ,  E03B3/18 ,  F24J3/00

CPC classification number: E21B43/02 ,  C08J3/24 ,  C08J2381/06

Abstract: Thermally crosslinked polysulfone may be made from linear polysulfone, such as polyethersulfone, in powder form blended with a powdered inorganic peroxide such as magnesium peroxide or another oxygen source, to form a mixture followed by compression inside a mold. The mixture is cured at a an elevated temperature, for instance above 325° C., for an effective period of time to form a dense object. The object is then boiled in water, optionally under pressure, to remove the salt to give a structure that is open and porous which may be used as a filtration device on a downhole tool for hydrocarbon recovery. If a powdered salt is not used, a thermally crosslinked, solid, void-free polysulfone is made which may be strong and rigid at ambient, surface temperatures, but is an elastomer at elevated downhole temperatures, and is thus suitable for use as a packer or an O-ring.

Abstract translation: 热交联聚砜可以由直链聚砜（例如聚醚砜）制成，粉末形式与粉状无机过氧化物如过氧化镁或其它氧源混合，以形成混合物，随后在模具内压缩。 混合物在升高的温度（例如高于325℃）下固化一段有效的时间以形成稠密的物体。 然后将物体任选在压力下在水中煮沸以除去盐，得到开放和多孔的结构，其可用作井下工具用于烃回收的过滤装置。 如果不使用粉末盐，则制成热交联，无固体，无空隙的聚砜，其在环境温度下可能是强的和刚性的，但是在升高的井下温度下是弹性体，因此适合用作封隔器 或O形圈。

公开(公告)号：US20120214923A1

公开(公告)日：2012-08-23

申请号：US13463323

申请日：2012-05-03

Applicant: Soma Chakraborty ,  Ping Duan ,  Gaurav Agrawal ,  Michael H. Johnson

Inventor： Soma Chakraborty ,  Ping Duan ,  Gaurav Agrawal ,  Michael H. Johnson

IPC: C08K5/05 ,  B82Y30/00

CPC classification number: B82Y30/00 ,  C08K3/04 ,  C08K3/045 ,  C08K9/04

Abstract: A polymer nanocomposite comprises a polymer; and a nanoparticle derivatized to include functional groups including carboxy, epoxy, ether, ketone, amine, hydroxy, alkoxy, alkyl, aryl, aralkyl, alkaryl, lactone, functionalized polymeric or oligomeric groups, or a combination comprising at least one of the forgoing functional groups. The variability in tensile strength and percent elongation for the polymer nanocomposite is less than the variability of these properties obtained where an underivatized nanoparticle is included in place of the derivatized nanoparticle.

公开(公告)号：US20120065309A1

公开(公告)日：2012-03-15

申请号：US12878507

申请日：2010-09-09

Applicant: Gaurav Agrawal ,  Soma Chakraborty ,  Ping Duan ,  Michael H. Johnson

Inventor： Gaurav Agrawal ,  Soma Chakraborty ,  Ping Duan ,  Michael H. Johnson

IPC: C08K5/41 ,  C08K3/20 ,  C08K5/07 ,  C08K5/06 ,  C08K5/20 ,  C08G18/00 ,  C08K5/05 ,  B82Y30/00

CPC classification number: B82Y30/00 ,  C08G18/10 ,  C08G18/4277 ,  C08K3/04 ,  C08K3/041 ,  C08K3/042 ,  C08K3/045 ,  C08K3/346 ,  C08K7/00 ,  C08G18/3808 ,  C08L75/04

Abstract: A method for making a polymer composite comprises mixing, a thermosetting polymer precursor, and 0.01 to 30 wt % of a derivatized nanoparticle based on the total weight of the polymer composite, the derivatized nanoparticle including functional groups comprising carboxy, epoxy, ether, ketone, amine, hydroxy, alkoxy, alkyl, aryl, aralkyl, alkaryl, lactone, functionalized polymeric or oligomeric groups, or a combination comprising at least one of the forgoing functional groups.

Abstract translation: 制备聚合物复合材料的方法包括将热固性聚合物前体和基于聚合物复合材料的总重量的0.01-30重量％的衍生的纳米颗粒混合，所述衍生的纳米颗粒包括包含羧基，环氧基，醚，酮， 胺，羟基，烷氧基，烷基，芳基，芳烷基，烷芳基，内酯，官能化的聚合或低聚基团，或包含至少一个前述官能团的组合。

公开(公告)号：US20090308614A1

公开(公告)日：2009-12-17

申请号：US12157510

申请日：2008-06-11

Applicant: James S. Sanchez ,  George E. Givens ,  Ping Duan

Inventor： James S. Sanchez ,  George E. Givens ,  Ping Duan

IPC: F16K1/42 ,  E21B34/06 ,  F16K5/06

CPC classification number: F16K15/04 ,  E21B34/14 ,  F16K25/005

Abstract: Ball seats comprising at least one sealing material facilitate restricting fluid flow through the ball seat when a plug, such as a ball, is landed on the seat. The plug is forced into the sealing material causing the sealing material to be deformed and to at least partially deform to a shape reciprocal to the shape of the plug, thereby reducing leakage around the plug and through the seat. In one particular embodiment, the ball seat is an extrudable ball seat. Suitable sealing materials include polymers and elastomers.

Abstract translation: 包括至少一个密封材料的球座有助于当诸如球的塞子落在座椅上时限制流过球座的流体流动。 塞子被迫进入密封材料中，导致密封材料变形并且至少部分地变形成与塞子形状相反的形状，从而减少塞子周围的泄漏并穿过座椅。 在一个具体实施例中，球座是可挤压的球座。 合适的密封材料包括聚合物和弹性体。

公开(公告)号：US11913309B2

公开(公告)日：2024-02-27

申请号：US16927056

申请日：2020-07-13

Applicant: Anil Sadana ,  Ping Duan

Inventor： Anil Sadana ,  Ping Duan

IPC: E21B43/08 ,  B01D71/32 ,  B01D39/16

CPC classification number: E21B43/082 ,  B01D39/1676 ,  B01D71/32 ,  B01D2201/06 ,  B01D2239/0266 ,  B01D2325/28 ,  B01D2325/32 ,  E21B2200/08

Abstract: 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.

公开(公告)号：US20200347175A1

公开(公告)日：2020-11-05

申请号：US16400400

申请日：2019-05-01

Applicant: Ping Duan ,  Anil Sadana

Inventor： Ping Duan ,  Anil Sadana

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

Abstract: 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：US10227471B2

公开(公告)日：2019-03-12

申请号：US15211661

申请日：2016-07-15

Applicant: Xiao Wang ,  Ping Duan ,  Anil K. Sadana

Inventor： Xiao Wang ,  Ping Duan ,  Anil K. Sadana

IPC: C08K3/30 ,  C08G18/10 ,  C08G18/42 ,  C08G18/76 ,  E21B33/12 ,  E21B34/06

Abstract: A degradable polymer composite comprises a polyurethane comprising one or more of the following groups: ester groups; carbonate groups; or ether groups, in a backbone of the polyurethane; and about 1 to about 30 parts by weight of an acidic or basic powder comprising particles having an average size of about 5 microns to about 1 millimeter per 100 parts of the polyurethane.

公开(公告)号：US20180305996A1

公开(公告)日：2018-10-25

申请号：US15496034

申请日：2017-04-25

Applicant: Ping Duan ,  Anil Sadana ,  Wayne Furlan

Inventor： Ping Duan ,  Anil Sadana ,  Wayne Furlan

IPC: E21B33/12

Abstract: A sealing system for a flow channel comprises 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; wherein the degradable polymeric element comprises one or more of the following: polyurethane; cured cyanate ester; an epoxy; polyimide; unsaturated polyester; or nylon.

公开(公告)号：US20180016411A1

公开(公告)日：2018-01-18

申请号：US15211661

申请日：2016-07-15

Applicant: Xiao Wang ,  Ping Duan ,  Anil K. Sadana

Inventor： Xiao Wang ,  Ping Duan ,  Anil K. Sadana

IPC: C08K3/30 ,  C08G18/42 ,  C08G18/10 ,  C08G18/76 ,  E21B34/06 ,  E21B33/12

CPC classification number: C08K3/30 ,  C08G18/10 ,  C08G18/42 ,  C08G18/44 ,  C08G18/48 ,  C08G18/7621 ,  C08G2230/00 ,  C08K2201/005 ,  E21B33/12 ,  E21B34/06 ,  C08G18/3243

Abstract: A degradable polymer composite comprises a polyurethane comprising one or more of the following groups: ester groups; carbonate groups; or ether groups, in a backbone of the polyurethane; and about 1 to about 30 parts by weight of an acidic or basic powder comprising particles having an average size of about 5 microns to about 1 millimeter per 100 parts of the polyurethane.