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公开(公告)号：US11492530B2
公开(公告)日：2022-11-08
申请号：US16876186
申请日：2020-05-18
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Simone Musso , Ashok Santra , Sivaprakash Shanmugam
IPC: C09K8/035 , E21B21/00 , E21B33/138
Abstract: Embodiments of the disclosure provide an unfoldable device for controlling lost circulation in a target lost circulation zone in a borehole. The unfoldable device includes a sheet, a backbone, and a shell. The sheet has an unfolded state and a folded state. The backbone reinforces the sheet. The backbone includes a shape-memory material having an original state and a deformed state. The shell encapsulates the sheet in the folded state and the backbone in the deformed state. In some embodiments, the shell includes a degradable polymer that degrades in the borehole upon contact with a drilling fluid such that the sheet transitions to the unfolded state and the backbone transitions to the original state. The sheet in the unfolded state accumulates on a borehole wall at least partially covering an entrance to a macrochannel of the target lost circulation zone.
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公开(公告)号：US20220306926A1
公开(公告)日：2022-09-29
申请号：US17216231
申请日：2021-03-29
Applicant: Saudi Arabian Oil Company
Inventor： Peter Boul , Sivaprakash Shanmugam , Kenneth Dejuan Johnson
Abstract: A method of using a nanosilica-containing cement in a well cementing operation in a well, the method comprising the steps of pumping a nanosilica-containing cement formulation into the well, wherein the nanosilica-containing cement formulation comprises maltodextrin-coated nanosilica and a cement formulation, where the maltodextrin-coated nanosilica comprises nanosilica particles encapsulated by maltodextrin coating, wherein the pH of the nanosilica-containing cement formulation is between 9 and 14, maintaining a temperature in the well due to a temperature of a formation surrounding the well, wherein the disintegration of the maltodextrin coating is initiated due to the temperature and pH of the nanosilica-containing cement, exposing the nanosilica particles due to the disintegration of the maltodextrin coating from the maltodextrin-coated nanosilica, and reacting the nanosilica particles with the cement formulation such that the transition time is reduced.
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公开(公告)号：US20220243114A1
公开(公告)日：2022-08-04
申请号：US17591880
申请日：2022-02-03
Applicant: Saudi Arabian Oil Company
Inventor： Sivaprakash Shanmugam , Ashok Santra , Carl Thaemlitz
IPC: C09K8/34
Abstract: A drilling fluid includes an oleaginous phase, a clay-based component, and an amphiphilic branched star polymer. The amphiphilic branched star polymer is a crosslinked, polymerized reaction product of crosslinker C and hydrophobic monomer B and optionally hydrophilic monomer A. The crosslinked polymerized reaction product includes a plurality of homopolymer segments of hydrophobic monomer B interconnected via crosslinker C, a plurality of block copolymer segments of hydrophobic monomer B and hydrophilic monomer A interconnected via crosslinker C, or combinations thereof.
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公开(公告)号：US20220242786A1
公开(公告)日：2022-08-04
申请号：US17591921
申请日：2022-02-03
Applicant: Saudi Arabian Oil Company
Inventor： Sivaprakash Shanmugam , Ashok Santra , Carl Thaemlitz
IPC: C04B24/26 , C04B28/02 , C09K8/36 , C08F293/00
Abstract: A cement slurry may include an aqueous phase; a cement precursor material; and a hydrophilic branched star polymer. The hydrophilic branched star polymer is a crosslinked, polymerized reaction product of crosslinker C and hydrophilic monomer A and hydrophilic/hydrophobic monomer B and optionally hydrophilic/hydrophobic monomer D. The crosslinked polymerized reaction product includes a plurality of block copolymer segments of hydrophilic monomer A and hydrophilic/hydrophobic monomer B interconnected via crosslinker C; a plurality of block copolymer segments of hydrophilic monomer A, hydrophilic monomer B, and hydrophilic/hydrophobic monomer D interconnected via crosslinker C; or combinations thereof.
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公开(公告)号：US20210172303A1
公开(公告)日：2021-06-10
申请号：US17111554
申请日：2020-12-04
Applicant: Saudi Arabian Oil Company
Inventor： Simone Musso , Sivaprakash Shanmugam
Abstract: A method of reducing lost circulation in a wellbore includes introducing a fluid including a fluid loss control additive comprising shape memory polymer, shape memory alloy, or both into the wellbore. The method further includes allowing the fluid loss control additive to lodge within fractures within a subsurface formation in the wellbore. The method further includes allowing the fluid loss control additive to expand within the fractures, thereby forming a barrier between the wellbore and the subsurface formation to reduce lost circulation in the wellbore.
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Patent Agency Ranking
公开(公告)号：US12006261B2
公开(公告)日：2024-06-11
申请号：US17523295
申请日：2021-11-10
Applicant: Saudi Arabian Oil Company
Inventor： Simone Musso , Sivaprakash Shanmugam
IPC: C09K8/473 , C04B22/06 , C04B24/26 , C08F220/06 , C08L51/10 , C04B103/00
CPC classification number: C04B24/2641 , C04B22/064 , C08F220/06 , C08L51/10 , C09K8/473 , C04B2103/0059 , C04B2103/0061
Abstract: Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries are provided. The cement slurries have, among other attributes, improved expanding capabilities and may be used, for instance, in the oil and gas drilling industry. The cement slurry comprises water, a cement precursor material, and an expanding agent. The expanding agent comprising at least a poly(acrylic acid)-metal oxide nanocomposite, where the metal oxide comprises MgO, CaO, or both, and the poly(acrylic acid) comprises a t-butyl terminal group, an isobornyl terminal group, or both.
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公开(公告)号：US12054424B2
公开(公告)日：2024-08-06
申请号：US18465343
申请日：2023-09-12
Applicant: Saudi Arabian Oil Company
Inventor： Sivaprakash Shanmugam , Peter Boul , Carl Thaemlitz
IPC: E21B33/14 , C01B33/18 , C04B14/06 , C04B20/10 , C04B28/04 , C04B40/00 , B82Y30/00 , B82Y40/00 , C04B20/00
CPC classification number: C04B20/1037 , C01B33/18 , C04B14/062 , C04B28/04 , C04B40/0032 , B82Y30/00 , B82Y40/00 , C04B20/0008 , C04B40/0082 , E21B33/14
Abstract: A method of producing a nanosilica-containing cement formulation, the method comprising the steps of mixing an amount of a determinant nanosilica particle and a functional coating; applying a dynamic initiator to trigger a reversible reaction of the functional coating to produce a reversible cage, where the reversible cage surrounds the determinant nanosilica particle to produce an encapsulated nanosilica; and mixing the encapsulated nanosilica and a cement formulation to produce the nanosilica-containing cement formulation.
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公开(公告)号：US20240051872A1
公开(公告)日：2024-02-15
申请号：US18465343
申请日：2023-09-12
Applicant: Saudi Arabian Oil Company
Inventor： Sivaprakash Shanmugam , Peter Boul , Carl Thaemlitz
CPC classification number: C04B20/1037 , C01B33/18 , C04B14/062 , C04B28/04 , C04B40/0032 , B82Y30/00
Abstract: A method of producing a nanosilica-containing cement formulation, the method comprising the steps of mixing an amount of a determinant nanosilica particle and a functional coating; applying a dynamic initiator to trigger a reversible reaction of the functional coating to produce a reversible cage, where the reversible cage surrounds the determinant nanosilica particle to produce an encapsulated nanosilica; and mixing the encapsulated nanosilica and a cement formulation to produce the nanosilica-containing cement formulation
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公开(公告)号：US11414971B2
公开(公告)日：2022-08-16
申请号：US17111554
申请日：2020-12-04
Applicant: Saudi Arabian Oil Company
Inventor： Simone Musso , Sivaprakash Shanmugam
Abstract: A method of reducing lost circulation in a wellbore includes introducing a fluid including a fluid loss control additive comprising shape memory polymer, shape memory alloy, or both into the wellbore. The method further includes allowing the fluid loss control additive to lodge within fractures within a subsurface formation in the wellbore. The method further includes allowing the fluid loss control additive to expand within the fractures, thereby forming a barrier between the wellbore and the subsurface formation to reduce lost circulation in the wellbore.
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公开(公告)号：US20220251442A1
公开(公告)日：2022-08-11
申请号：US17592592
申请日：2022-02-04
Applicant: Saudi Arabian Oil Company
Inventor： Sivaprakash Shanmugam , Carl Thaemlitz
Abstract: A method of polymer flooding within a carbonate formation the method comprising: injecting a treatment fluid composition into a wellbore, the treatment fluid composition comprising: a base fluid, and a viscosifier comprising a branched block copolymer wherein the branched block copolymer is a crosslinked, polymerized reaction product of crosslinker C and monomer A and monomer B and monomer D; and increasing hydrocarbon production from the wellbore.
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