公开(公告)号：US11866637B2

公开(公告)日：2024-01-09

申请号：US17657439

申请日：2022-03-31

Applicant: ARAMCO SERVICES COMPANY

Inventor： Ashok Santra ,  Carl Thaemlitz

IPC: C09K8/12 ,  C08F292/00 ,  E21B21/00 ,  E21B41/02

CPC classification number: C09K8/12 ,  C08F292/00 ,  E21B21/00 ,  E21B41/02

Abstract: A composition of matter including a mono-facial polymer-grafted graphene particle and an aqueous-based drilling fluid is provided. In the composition, a first side of the graphene particle has a grafted polymer. A method of lubricating a tool surface using the composition of matter is also provided. The method includes providing an aqueous-based drilling fluid, the aqueous-based drilling fluid having a mono-facial polymer-grafted graphene particle, and introducing the aqueous-based drilling fluid into a wellbore such that it contacts a tool surface to form a coated tool. A drilling tool having a mono-facial polymer-grafted graphene particle adhered to its surface is also provided.

公开(公告)号：US20220064513A1

公开(公告)日：2022-03-03

申请号：US17011285

申请日：2020-09-03

Applicant: ARAMCO SERVICES COMPANY

Inventor： Hasmukh A. Patel ,  Carl Thaemlitz

IPC: C09K8/12 ,  C07D471/22 ,  C07D471/08

Abstract: A wellbore fluid may include a base fluid and at least one cationic heterocyclic polymer in an amount effective to increase a viscosity of the base fluid, the cationic heterocyclic polymer includes at least two distinct cyclic monomers, at least one of which has at least two heteroatoms in the cyclic structure. A method of drilling a wellbore may introduce such wellbore fluid into the wellbore. A method of producing a cationic heterocyclic polymer may include reacting, in a solvent selected from the group that includes tetrahydrofuran, dioxane, dichloromethane, alcoholic solvents, chlorinated solvents, aromatic hydrocarbon solvents, or mixture thereof, at least two distinct cyclic monomers, at least one of which has at least two heteroatoms in the cyclic structure.

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.

公开(公告)号：US20220315825A1

公开(公告)日：2022-10-06

申请号：US17657439

申请日：2022-03-31

Applicant: ARAMCO SERVICES COMPANY

Inventor： Ashok Santra ,  Carl Thaemlitz

IPC: C09K8/12 ,  C08F292/00 ,  E21B21/00 ,  E21B41/02

Abstract: A composition of matter including a mono-facial polymer-grafted graphene particle and an aqueous-based drilling fluid is provided. In the composition, a first side of the graphene particle has a grafted polymer. A method of lubricating a tool surface using the composition of matter is also provided. The method includes providing an aqueous-based drilling fluid, the aqueous-based drilling fluid having a mono-facial polymer-grafted graphene particle, and introducing the aqueous-based drilling fluid into a wellbore such that it contacts a tool surface to form a coated tool. A drilling tool having a mono-facial polymer-grafted graphene particle adhered to its surface is also provided.

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

IPC: C09K8/12 ,  C09K8/528

CPC classification number: C09K8/528 ,  C09K8/12

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.

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.

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

IPC: C09K8/528 ,  C09K8/12

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.

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.

公开(公告)号：US12054665B2

公开(公告)日：2024-08-06

申请号：US17647416

申请日：2022-01-07

Applicant: ARAMCO SERVICES COMPANY

Inventor： Ashok Santra ,  Carl Thaemlitz

IPC: C09K8/12 ,  C08F292/00 ,  E21B21/00

CPC classification number: C09K8/12 ,  C08F292/00 ,  E21B21/00 ,  C09K2208/10

Abstract: A composition that includes a polymer-grafted graphene particle and aqueous-based drilling fluid is provided. At least one side of the graphene particle comprises a grafted polymer. A method of using an aqueous-based drilling fluid is also provided. The method includes introducing the aqueous-based drilling fluid into a wellbore and circulating the aqueous-based drilling fluid during drilling operations. The drilling fluid includes a polymer-grafted graphene particle and aqueous-based drilling fluid. At least one side of the graphene particle comprises a grafted polymer. The aqueous-based drilling fluid includes a range of from about 0.01 ppb to 10 ppb of the polymer-grafted graphene particle.