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公开(公告)号：US20200063018A1
公开(公告)日：2020-02-27
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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公开(公告)号：US10407609B2
公开(公告)日：2019-09-10
申请号：US15584638
申请日：2017-05-02
Applicant: Saudi Arabian Oil Company
Inventor： Rajendra Arunkumar Kalgaonkar , Vikrant Bhavanishankar Wagle , Abdullah Saleh Hussain Al-Yami , Ayman Mohammed Almohsin
Abstract: A lost-circulation material including a mixture of an aqueous colloidal dispersion and fatty acid. The aqueous colloidal dispersion includes silica nanoparticles and has a pH of at least 8. Combining the colloidal dispersion and the fatty acid initiates gelation of the lost-circulation material when the pH of the lost-circulation material is less than 8 and a temperature of the lost-circulation material is in a range of 5° C. to 300° C. Sealing an opening in a portion of a wellbore or a portion of a subterranean formation in which the wellbore is formed may include providing the aqueous colloidal dispersion and the fatty acid to the wellbore, mixing the colloidal dispersion and the fatty acid to yield the lost-circulation material, initiating gelation of the lost-circulation material, and solidifying the lost-circulation material in the wellbore to yield a set gel.
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公开(公告)号：US20190177606A1
公开(公告)日：2019-06-13
申请号：US15836515
申请日：2017-12-08
Applicant: Saudi Arabian Oil Company
Inventor： Noor O. Baqader , Ahmed M. Gomaa , Rajendra Arunkumar Kalgaonkar
Abstract: Materials and methods for generating isolated pillar structures and conductive channels within hydrofracturing reservoirs are provided herein.
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公开(公告)号：US20180327649A1
公开(公告)日：2018-11-15
申请号：US16039698
申请日：2018-07-19
Applicant: Saudi Arabian Oil Company
Inventor： Rajendra Arunkumar Kalgaonkar , Vikrant Bhavanishankar Wagle , Jin Huang , Abdullah Saleh Hussain Al-Yami
CPC classification number: C09K8/508 , C04B28/24 , C09K8/032 , C09K8/035 , C09K8/426 , C09K8/5045 , C09K8/54 , C09K2208/10 , C04B24/08 , C04B40/0082
Abstract: A subterranean formation sealant includes a mixture of an aqueous colloidal dispersion including silica nanoparticles and a C6-C12 fatty acid. Heating the sealant above 70° C. initiates gelation of the sealant. Sealing an opening in a water or gas producing zone in a subterranean formation includes providing a sealant including a mixture of a colloidal dispersion including silica nanoparticles and a C6-C12 fatty acid to the water or gas producing zone, initiating gelation of the sealant in situ, and solidifying the sealant in the water or gas producing zone to yield a set gel, thereby sealing the opening in the water or gas producing zone.
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公开(公告)号：US20240425744A1
公开(公告)日：2024-12-26
申请号：US18341451
申请日：2023-06-26
Applicant: Saudi Arabian Oil Company
Inventor： Rajendra Arunkumar Kalgaonkar , Vikrant Wagle , Qasim Sahu
IPC: C09K8/506 , C09K8/504 , E21B33/138
Abstract: A method and system for controlling unwanted water production from a water-producing zone in a subterranean formation are provided. An exemplary method includes flowing an alkaline suspension of nanosilica particles into a wellbore such that it contacts the water-producing zone, and flowing a formate salt solution into the wellbore such that it contacts the alkaline suspension in the water-producing zone producing a composition. The wellbore is shut in a duration of time sufficient for the composition to form a gel that is impermeable to fluid flow.
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Patent Agency Ranking
公开(公告)号：US20240327695A1
公开(公告)日：2024-10-03
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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公开(公告)号：US20240132773A1
公开(公告)日：2024-04-25
申请号：US17938798
申请日：2022-10-07
Inventor： Rajendra Arunkumar Kalgaonkar , Mohammed Abudullah Bataweel , Nour Othman Baqader , Nisar Ullah , Muhammad Mansha
IPC: C09K8/584
CPC classification number: C09K8/584
Abstract: A diverter agent includes a morpholinium based zwitterionic surfactant having a sulfonate terminal moiety; and an ammonium based zwitterionic surfactant.
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公开(公告)号：US11959017B1
公开(公告)日：2024-04-16
申请号：US17938798
申请日：2022-10-07
Inventor： Rajendra Arunkumar Kalgaonkar , Mohammed Abudullah Bataweel , Nour Othman Baqader , Nisar Ullah , Muhammad Mansha
CPC classification number: C09K8/584
Abstract: A diverter agent includes a morpholinium based zwitterionic surfactant having a sulfonate terminal moiety; and an ammonium based zwitterionic surfactant.
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公开(公告)号：US20240084676A1
公开(公告)日：2024-03-14
申请号：US17930586
申请日：2022-09-08
Applicant: SAUDI ARABIAN OIL COMPANY
Abstract: A method includes providing a well extending underground from a surface, using radial drilling to drill a primary tunnel extending in an outwardly direction from the well at a first axial location along the well, installing a chemical storage assembly in the primary tunnel, and ejecting chemicals from the chemical storage assembly into the well.
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公开(公告)号：US20240067861A1
公开(公告)日：2024-02-29
申请号：US17818576
申请日：2022-08-09
Inventor： Rajendra Arunkumar Kalgaonkar , Mohammed Abudullah Bataweel , Manar Mohammed Alahmari , Ali Shaikh Asrof , Ahmad Bakr Al-Harbi , Nisar Ullah
IPC: C09K8/508 , C08F220/56 , C09K8/76 , E21B43/16 , E21B43/27
CPC classification number: C09K8/5083 , C08F220/56 , C09K8/76 , E21B43/16 , E21B43/27 , C08F2800/10
Abstract: A composition includes a polymer having a structure as shown in Formula (I):
where x is from 20 to 70, y is from 20 to 30, z is from 1.0 to 10, and p is from 1.0 to 10. A method of making the polymer is also provided. The polymer composition may be used as a wellbore fluid. Also provided is a method of treating a hydrocarbon bearing formation. The method includes introducing the polymer-containing wellbore fluid into a high permeability zone of a hydrocarbon bearing formation such that it blocks at least a portion of the high permeability zone of the hydrocarbon bearing formation, stimulating the hydrocarbon bearing formation thereby creating pathways for hydrocarbon production, and recovering hydrocarbons.
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