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公开(公告)号：US20230137416A1
公开(公告)日：2023-05-04
申请号：US17452913
申请日：2021-10-29
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Amy J. Cairns , Mohammed Sayed
IPC: C09K8/54 , C08F293/00 , C09K8/74 , C09K8/60 , E21B43/27
Abstract: A composition for treating a formation includes a surfactant including an amphiphilic block copolymer having a first block and a second block and an acid. The amphiphilic block copolymer is a reaction product of a first monomer and a second monomer via a reversible addition-fragmentation chain transfer polymerization (RAFT) in a two-step reaction using a chain transfer agent (CTA) and a radical initiator. The surfactant favors adsorption onto a surface of the formation such that a temporary barrier is formed, thereby attenuating a reaction rate between the acid and the formation.
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公开(公告)号：US12043787B2
公开(公告)日：2024-07-23
申请号：US17649998
申请日：2022-02-04
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Ashok Santra , Carl J. Thaemlitz
IPC: C09K8/035
CPC classification number: C09K8/035
Abstract: A drilling fluid composition comprising a base fluid, and a viscosifier including an ultra-high molecular weight branched block copolymer having the following structure,
where monomer A is an anionic monomer, monomer B is a hydrophilic monomer, monomer C is an anionic monomer, monomer D is a crosslinker-divinyl monomer, and —SSCZ ground being a terminal RAFT agent.-
公开(公告)号：US12104117B2
公开(公告)日：2024-10-01
申请号：US18362741
申请日：2023-07-31
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Amy J. Cairns , Mohammed Sayed
IPC: C09K8/54 , C08F293/00 , C09K8/60 , C09K8/74 , E21B43/27
CPC classification number: C09K8/54 , C08F293/005 , C09K8/604 , C09K8/74 , E21B43/27 , C08F2438/03 , C09K2208/32
Abstract: A composition for treating a formation includes a surfactant including an amphiphilic block copolymer having a first block and a second block and an acid. The amphiphilic block copolymer is a reaction product of a first monomer and a second monomer via a reversible addition-fragmentation chain transfer polymerization (RAFT) in a two-step reaction using a chain transfer agent (CTA) and a radical initiator. The surfactant favors adsorption onto a surface of the formation such that a temporary barrier is formed, thereby attenuating a reaction rate between the acid and the formation.
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公开(公告)号：US11840663B2
公开(公告)日：2023-12-12
申请号：US17650010
申请日：2022-02-04
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Ashok Santra , Carl Thaemlitz
IPC: C09K8/588 , C08F299/02
CPC classification number: C09K8/588 , C08F299/024 , C09K2208/28
Abstract: A drilling fluid composition comprising a base fluid, and a drag reducing agent including an ultra-high molecular weight branched block copolymer having the following structure,
where monomer A is an anionic monomer, monomer B is a hydrophilic monomer, monomer C is an anionic monomer, monomer D is a crosslinker-divinyl monomer, and -SSCZ ground being a terminal RAFT agent.-
公开(公告)号：US11840662B2
公开(公告)日：2023-12-12
申请号：US17650004
申请日：2022-02-04
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Ashok Santra , Carl Thaemlitz
Abstract: A drilling fluid composition comprising a base fluid, and a shale inhibitor including an ultra-high molecular weight branched block copolymer having the following structure,
where monomer A is an anionic monomer, monomer B is a hydrophilic monomer, monomer C is an anionic monomer, monomer D is a crosslinker-divinyl monomer, and —SSCZ ground being a terminal RAFT agent.-
Patent Agency Ranking
公开(公告)号：US20220251439A1
公开(公告)日：2022-08-11
申请号：US17650010
申请日：2022-02-04
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Ashok Santra , Carl Thaemlitz
IPC: C09K8/588 , C08F299/02
Abstract: A drilling fluid composition comprising a base fluid, and a drag reducing agent including an ultra-high molecular weight branched block copolymer having the following structure, where monomer A is an anionic monomer, monomer B is a hydrophilic monomer, monomer C is an anionic monomer, monomer D is a crosslinker-divinyl monomer, and -SSCZ ground being a terminal RAFT agent.
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公开(公告)号：US20220243116A1
公开(公告)日：2022-08-04
申请号：US17650004
申请日：2022-02-04
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Ashok Santra , Carl Thaemlitz
Abstract: A drilling fluid composition comprising a base fluid, and a shale inhibitor including an ultra-high molecular weight branched block copolymer having the following structure, where monomer A is an anionic monomer, monomer B is a hydrophilic monomer, monomer C is an anionic monomer, monomer D is a crosslinker-divinyl monomer, and -SSCZ ground being a terminal RAFT agent.
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公开(公告)号：US20220243111A1
公开(公告)日：2022-08-04
申请号：US17649998
申请日：2022-02-04
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Ashok Santra , Carl Thaemlitz
IPC: C09K8/035
Abstract: A drilling fluid composition comprising a base fluid, and a viscosifier including an ultra-high molecular weight branched block copolymer having the following structure, where monomer A is an anionic monomer, monomer B is a hydrophilic monomer, monomer C is an anionic monomer, monomer D is a crosslinker-divinyl monomer, and —SSCZ ground being a terminal RAFT agent.
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公开(公告)号：US20240026214A1
公开(公告)日：2024-01-25
申请号：US18476077
申请日：2023-09-27
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Ashok Santra , Carl Thaemlitz
IPC: C09K8/588 , C08F299/02
CPC classification number: C09K8/588 , C08F299/024 , C09K2208/28
Abstract: A drilling fluid composition comprising a base fluid, and a drag reducing agent including an ultra-high molecular weight branched block copolymer having the following structure,
where monomer A is an anionic monomer, monomer B is a hydrophilic monomer, monomer C is an anionic monomer, monomer D is a crosslinker-divinyl monomer, and —SSCZ ground being a terminal RAFT agent.-
10.发明公开公开(公告)号：US20240018411A1
公开(公告)日：2024-01-18
申请号：US18362741
申请日：2023-07-31
Applicant: ARAMCO SERVICES COMPANY
Inventor： Sivaprakash Shanmugam , Amy J. Cairns , Mohammed Sayed
IPC: C09K8/54 , C08F293/00 , C09K8/74 , E21B43/27 , C09K8/60
CPC classification number: C09K8/54 , C08F293/005 , C09K8/74 , E21B43/27 , C09K8/604 , C09K2208/32 , C08F2438/03
Abstract: A composition for treating a formation includes a surfactant including an amphiphilic block copolymer having a first block and a second block and an acid. The amphiphilic block copolymer is a reaction product of a first monomer and a second monomer via a reversible addition-fragmentation chain transfer polymerization (RAFT) in a two-step reaction using a chain transfer agent (CTA) and a radical initiator. The surfactant favors adsorption onto a surface of the formation such that a temporary barrier is formed, thereby attenuating a reaction rate between the acid and the formation.
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