-
公开(公告)号：US20230193112A1
公开(公告)日：2023-06-22
申请号：US17552395
申请日：2021-12-16
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Vikrant Wagle , Rajendra Arunkumar Kalgaonkar , Abdullah AlYami
CPC classification number: C09K8/5045 , C09K8/514 , C01B33/14 , C09K2208/10 , C01P2004/64 , C01P2006/12 , C01P2006/10
Abstract: Provided is a loss circulation material that may consist essentially of an acidic nanosilica dispersion and an activator. The acidic nanosilica dispersion may consist of acidic silica nanoparticles, stabilizer, and water, and may have a pH in a range of 3 to 6. The activator may be one or more from the group consisting of sodium bicarbonate, sodium chloride, or an amine salt. A method is provided for controlling lost circulation in a lost circulation zone in a wellbore comprising introducing the loss circulation material and forming a gelled solid from the loss circulation material in the lost circulation zone.
-
公开(公告)号：US11643590B1
公开(公告)日：2023-05-09
申请号：US17454699
申请日：2021-11-12
Inventor： Rajendra Arunkumar Kalgaonkar , Mohammed Abudullah Bataweel , Eyad Alali , Nisar Ullah , Muhammad Mansha
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 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 for treating a hydrocarbon-containing formation with the wellbore fluid is also provided.-
公开(公告)号：US11299662B2
公开(公告)日：2022-04-12
申请号：US16922512
申请日：2020-07-07
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Vikrant Wagle , Rajendra Arunkumar Kalgaonkar , Abdullah Al-Yami , Sara Alkhalaf
Abstract: Provided is a lost circulation material that may consist essentially of an alkaline nanosilica dispersion and a sodium bicarbonate activator. Further provided are methods that may control lost circulation in a lost circulation zone in a wellbore by introducing the lost circulation material such that it contacts the lost circulation zone and forms a gelled solid in the lost circulation zone.
-
公开(公告)号：US11236264B2
公开(公告)日：2022-02-01
申请号：US16895757
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-C6 hydrocarbon group or a monovalent cation, R2 is a C1-C10 hydrocarbon group, m is an integer ranging from 1 to 4, n is an integer ranging from 8 to 12, and X is a monovalent anion.
-
公开(公告)号：US20220010193A1
公开(公告)日：2022-01-13
申请号：US16922512
申请日：2020-07-07
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Vikrant Wagle , Rajendra Arunkumar Kalgaonkar , Abdullah Al-Yami , Sara Alkhalaf
Abstract: Provided is a lost circulation material that may consist essentially of an alkaline nanosilica dispersion and a sodium bicarbonate activator. Further provided are methods that may control lost circulation in a lost circulation zone in a wellbore by introducing the lost circulation material such that it contacts the lost circulation zone and forms a gelled solid in the lost circulation zone.
-
Patent Agency Ranking
公开(公告)号：US11203712B1
公开(公告)日：2021-12-21
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.
-
公开(公告)号：US20210380871A1
公开(公告)日：2021-12-09
申请号：US16895757
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-C6 hydrocarbon group or a monovalent cation, R2 is a C1-C10 hydrocarbon group, m is an integer ranging from 1 to 4, n is an integer ranging from 8 to 12, and X is a monovalent anion.
-
公开(公告)号：US10954427B2
公开(公告)日：2021-03-23
申请号：US15982048
申请日：2018-05-17
Applicant: Saudi Arabian Oil Company
Inventor： Rajendra Arunkumar Kalgaonkar , Vikrant Wagle
IPC: C09K8/506 , C09K8/504 , 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-soluble hydrolyzable compound. The method further includes allowing the water-soluble 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-soluble hydrolyzable compound.
-
59.发明申请公开(公告)号：US20200270503A1
公开(公告)日：2020-08-27
申请号：US16865721
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 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, an alkaline nanosilica dispersion, and at least one additive. 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.
-
公开(公告)号：US20190225868A1
公开(公告)日：2019-07-25
申请号：US16374492
申请日：2019-04-03
Applicant: Saudi Arabian Oil Company
Inventor： Rajendra Arunkumar Kalgaonkar , Fakuen Frank Chang
Abstract: The present application relates to coated silica particles, compositions containing the coated silica particles, and methods for using these compositions in subterranean formations. The coated silica particle includes a cationic species non-covalently bound to an outer surface of the particle. The particle can include a nanoparticle.
-
-
-
-
-
-
-
-
-
Search Results
78
records
(took 0.02 seconds)
