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公开(公告)号：US12139660B2
公开(公告)日：2024-11-12
申请号：US18310256
申请日：2023-05-01
Inventor： Rajendra Arunkumar Kalgaonkar , Eyad Alali , Mohammed A. Bataweel , Nisar Ullah , Muhammad Mansha
IPC: C09K8/508 , E21B33/138
Abstract: A method, wellbore, and pill for treating a region of a subterranean formation adjacent a wellbore zone of the wellbore, including injecting a gellable treatment composition (e.g., as the pill) through the wellbore zone into the region of the subterranean formation adjacent the wellbore zone, allowing the gellable treatment composition to form nanoparticles in-situ in the region and gel in the region via heat provided by the region to prevent or reduce flow of an unwanted fluid from the region into the wellbore zone. The gellable treatment composition may include a zwitterionic gemini surfactant (ZGS).
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公开(公告)号：US20240368971A1
公开(公告)日：2024-11-07
申请号：US18775297
申请日：2024-07-17
Inventor： Rajendra Arunkumar Kalgaonkar , Mohammed Abdullah Bataweel , Nour Othman Baqader , Nisar Ullah , Muhammad Mansha
Abstract: A method of controlling a permeability zone in a reservoir includes introducing a diverter agent comprising a morpholinium based zwitterionic surfactant including a sulfonate terminal moiety, an ammonium-based zwitterionic surfactant, and an activator in a wellbore. Once introduced, the diverter agent contacts a high permeability zone in the reservoir. The diverter agent heats and gels to form a gelled diverter agent in the high permeability zone, subsequently forming a zone of decreased permeability
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公开(公告)号：US12122956B1
公开(公告)日：2024-10-22
申请号：US18192327
申请日：2023-03-29
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Qasim Sahu , Ameerah M. Bokhari , Rajendra Arunkumar Kalgaonkar
Abstract: In a method for diverter fracturing, a water-based fracturing fluid including non-convex particles is introduced into a hydraulic fracture of a wellbore at a first location. Each non-convex particle is formed to interlock with another non-convex particle. A diverter plug is formed in the hydraulic fracture when multiple non-convex particles interlock. Flow of another water-based fracturing fluid is diverted to a second location due to the diverter plug, forming another hydraulic fracture at the second location.
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4.发明授权公开(公告)号：US11739255B2
公开(公告)日：2023-08-29
申请号：US17454695
申请日：2021-11-12
Inventor： Rajendra Arunkumar Kalgaonkar , Mohammed Abudullah Bataweel , Eyad Alali , Nisar Ullah , Muhammad Mansha
CPC classification number: C09K8/584 , E21B43/16 , E21B43/27 , C09K2208/30
Abstract: A wellbore fluid including a first surfactant, a second surfactant, an activator and an aqueous base fluid is provided. The first surfactant has a structure represented by Formula (I):
where Y1, Y2, Y3, Y4 are each, independently, a sulfonate, a carboxylate, an ester or a hydroxyl group, m is an integer ranging from 2 to 3, and n, o, and k are each, independently, integers ranging from 2 to 10. The second surfactant has a structure represented by Formula (III):
where R2 is a C15-C27 hydrocarbon group or a C15-C29 substituted hydrocarbon group, R3 is a C1-C10 hydrocarbon group, and p and q are each, independently, an integer ranging from 1 to 4. A method of using the wellbore fluid for treating a hydrocarbon-containing formation is also provided.-
公开(公告)号：US20230129905A1
公开(公告)日：2023-04-27
申请号：US17509857
申请日：2021-10-25
Inventor： Rajendra Arunkumar Kalgaonkar , Eyad Alali , Mohammed A. Bataweel , Nisar Ullah , Muhammad Mansha
IPC: C09K8/508 , E21B33/138
Abstract: A method, wellbore, and pill for treating a region of a subterranean formation adjacent a wellbore zone of the wellbore, including injecting a gellable treatment composition (e.g., as the pill) through the wellbore zone into the region of the subterranean formation adjacent the wellbore zone, allowing the gellable treatment composition to form nanoparticles in-situ in the region and gel in the region via heat provided by the region to prevent or reduce flow of an unwanted fluid from the region into the wellbore zone. The gellable treatment composition may include a zwitterionic gemini surfactant (ZGS).
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Patent Agency Ranking
公开(公告)号：US20210380873A1
公开(公告)日：2021-12-09
申请号：US16895752
申请日：2020-06-08
Inventor： Rajendra Arunkumar Kalgaonkar , Khalid Alnoaimi , Nour Baqader , Nisar Ullah , Muhammed Mansha
Abstract: A wellbore fluid may include a gemini surfactant, a zwitterionic surfactant, an activator, and an aqueous base fluid. The gemini surfactant may have a structure represented by formula (I): where R1 is a C1-C10 hydrocarbon group, m and o are each, independently, an integer ranging from 1 to 4, and n is an integer ranging from 8 to 12.
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公开(公告)号：US11053428B2
公开(公告)日：2021-07-06
申请号：US16667263
申请日：2019-10-29
Applicant: Saudi Arabian Oil Company
Inventor： Rajendra Arunkumar Kalgaonkar , Vikrant Wagle
IPC: C09K8/575 , C09K8/57 , E21B33/138
Abstract: A method for plugging and sealing subsurface formations using alkaline nanosilica dispersion and a delayed activation chemistry is disclosed. In accordance with one embodiment of the present disclosure, the method includes introducing a mixture with a first pH into the subsurface formation. The mixture comprises an aqueous solution, an alkaline nanosilica dispersion and a water-insoluble hydrolyzable compound. The method further includes allowing the water-insoluble hydrolyzable compound to hydrolyze in the subsurface formation to form an acid at 70° C. or greater, thereby acidizing the mixture to a reduced second pH and causing the alkaline nanosilica dispersion to gel into a solid and seal the subsurface formation. A composition for sealing a subsurface formation is also disclosed. The composition includes an aqueous mixture including water, an alkaline nanosilica dispersion, and a water-insoluble hydrolyzable compound.
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8.发明申请公开(公告)号：US20200332174A1
公开(公告)日：2020-10-22
申请号：US16865719
申请日：2020-05-04
Applicant: Saudi Arabian Oil Company
Inventor： Vikrant Wagle , Rajendra Arunkumar Kalgaonkar , Abdullah Al-Yami
Abstract: A method for controlling loss circulation. The method includes introducing into a wellbore a nanosilica drilling fluid comprising water, an alkaline nanosilica dispersion, and at least one additive. The method further includes introducing into the nanosilica drilling fluid an amount of a chemical activator comprising a water soluble hydrolysable polyester to produce a convertible drilling mud where the convertible drilling mud has an initial pH between 8 and 11 upon formation. The method also includes allowing the chemical activator to hydrolyze to produce an acid and reduce the pH of the convertible drilling mud to less than a gel pH, thereby converting the convertible drilling mud into a solid gel lost circulation material. A convertible drilling mud operable to convert into a solid gel lost circulation material is also provided.
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9.发明授权公开(公告)号：US10655050B1
公开(公告)日：2020-05-19
申请号：US16281503
申请日：2019-02-21
Applicant: Saudi Arabian Oil Company
Inventor： Vikrant Wagle , Rajendra Arunkumar Kalgaonkar , Abdullah Al-Yami
Abstract: A method for controlling loss circulation. The method includes introducing into a wellbore a nanosilica drilling fluid comprising water and an alkaline nanosilica dispersion. The method further includes introducing into the nanosilica drilling fluid an amount of a chemical activator comprising a water soluble hydrolysable polyester to produce a convertible drilling mud where the convertible drilling mud has an initial pH between 8 and 11 upon formation. The method also includes allowing the chemical activator to hydrolyze to produce an acid and reduce the pH of the convertible drilling mud to less than a gel pH, thereby converting the convertible drilling mud into a solid gel lost circulation material. A convertible drilling mud operable to convert into a solid gel lost circulation material is also provided.
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10.发明授权公开(公告)号：US10655049B1
公开(公告)日：2020-05-19
申请号：US16281535
申请日：2019-02-21
Applicant: Saudi Arabian Oil Company
Inventor： Vikrant Wagle , Rajendra Arunkumar Kalgaonkar , Abdullah Al-Yami
Abstract: A method for controlling loss circulation in a subterranean formation. The method includes circulating in a wellbore a nanosilica drilling fluid having a pH in a range of from about 8 to about 11 and a gel pH of less than 8, where the nanosilica drilling fluid includes an aqueous-based drilling mud and an alkaline nanosilica dispersion. The method also includes introducing into the nanosilica drilling fluid an amount of a chemical activator sufficient to produce a convertible drilling mud where the chemical activator is an acid and the pH of the convertible drilling mud is less than the gel pH. The method also includes allowing the convertible drilling mud to convert into the solid gel lost circulation material. A convertible drilling mud operable to convert into a solid gel lost circulation material is also provided.
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