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公开(公告)号：US11123658B2
公开(公告)日：2021-09-21
申请号：US16416774
申请日：2019-05-20
Inventor： Ahmad A. Adewunmi , Muhammad Shahzad Kamal , Theis Ivan Solling , Babatunde Abiodun Salami
Abstract: A method of demulsifying an emulsion of oil and water whereby palm oil fuel ash, which is a low cost waster product obtained from oil palm processing, is added to the emulsion and the resulting mixture is agitated, thereby breaking the emulsion into an aqueous phase and an oil phase. Solid particles of palm oil fuel ash settle to the bottom of the aqueous phase, allowing easy separation of the oil phase, the aqueous phase, and the settled solid particles of palm oil fuel ash.
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22.发明授权公开(公告)号：US12146094B2
公开(公告)日：2024-11-19
申请号：US18616632
申请日：2024-03-26
Inventor： Tawfik Abdo Saleh , Azeem Rana , Mobeen Murtaza , Muhammad Shahzad Kamal , Mohamed Mahmoud
Abstract: A drilling fluid composition includes an aqueous base fluid, 0.01 to 10 wt. % of a date palm leaves extract (DPLE), 1 to 10 wt. % of clay particles, and 0.01 to 1 wt. % of a base, where each wt. % based on a total weight of the drilling fluid composition. The DPLE is homogenously disposed on surfaces of the clay particles. The clay particles disposed with the DPLE are present in the drilling fluid composition in the form of a composite. A pellet made from the clay particles treated with the DPLE has a swelling value at least 75% less than a swelling value of the pellet in an aqueous composition that does not contain the DLPE. A method of making the drilling fluid composition.
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公开(公告)号：US12084614B2
公开(公告)日：2024-09-10
申请号：US18607916
申请日：2024-03-18
Inventor： Mohamed Mahmoud , Muhammad Shahzad Kamal
IPC: C09K8/528
CPC classification number: C09K8/528
Abstract: A method of removing a sulfate scale from a surface is provided. The method includes contacting the sulfate-comprising scale with a conversion solution including 1 to 10 wt. % of an alkali metal carbonate, 0.5 to 10 wt. % of a borate salt or hydrate thereof, and 0.5 to 2.5 wt. % of a base to produce a carbonate-comprising scale. The method further includes exposing the carbonate-comprising scale with an acid solution including 2.5 to 25 wt. % of an acid.
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Patent Agency Ranking
公开(公告)号：US11866641B2
公开(公告)日：2024-01-09
申请号：US18146205
申请日：2022-12-23
Inventor： S. M. Shakil Hussain , Muhammad Shahzad Kamal
IPC: C09K8/68 , C09K8/584 , C07C229/12 , C07C305/04 , C09K8/06 , C07C305/10
CPC classification number: C09K8/584 , C07C229/12 , C07C305/04 , C07C305/10 , C09K8/06 , C09K8/68
Abstract: A surfactant of formula (I)
wherein each of R1 and R2 are independently a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, or an optionally substituted arylalkyl, R3 and R4 are independently an optionally substituted alkyl, an optionally substituted cycloalkyl, or an optionally substituted arylalkyl, x is an integer in a range of 2-8, y is an integer in a range of 1-15, z is an integer in a range of 4-10, n is an integer in a range of 2-5, and A is one of a carboxybetaine group, a sulfobetaine group, or a hydroxy sulfobetaine group. An oil and gas well servicing fluid containing the surfactant and methods of servicing an oil and gas well are also described.-
25.发明授权公开(公告)号：US11459499B2
公开(公告)日：2022-10-04
申请号：US16585908
申请日：2019-09-27
Inventor： Syed M. Shakil Hussain , Muhammad Shahzad Kamal
IPC: C09K8/584 , B01F17/00 , C09K8/588 , C07C235/10 , C09K23/00
Abstract: Amidoamine-based gemini surfactants having dual chains connected via an alkyl linker. Each chain contains a quaternary ammonium head group and an ethoxylated alkyl tail. Properties of the surfactant including thermal stability, critical micelle concentration, and foam stability are specified. A method of recovering oil from a reservoir using an aqueous composition that contains the surfactant and a polymer (e.g. AM-AMPS) is also provided. This method is particularly effective for oil recovery in reservoirs of high temperature and/or high salinity.
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26.发明授权公开(公告)号：US11421145B2
公开(公告)日：2022-08-23
申请号：US16444435
申请日：2019-06-18
Inventor： Syed M. Shakil Hussain , Muhammad Shahzad Kamal
Abstract: A method of recovering oil from a reservoir using an aqueous composition that contains an unsaturated zwitterionic surfactant and a copolymer. The unsaturated zwitterionic surfactant is an amidoamine-based surfactant having a sulfonate head group and an alkenyl tail. The copolymer contains reacted units of acrylamide and 2-acrylamido-2-methylpropane sulfonic acid (AM-AMPS). This method is particularly effective for enhanced oil recovery in carbonate reservoirs of high temperature and/or high salinity.
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公开(公告)号：US11407928B2
公开(公告)日：2022-08-09
申请号：US16578786
申请日：2019-09-23
Inventor： Muhammad Shahzad Kamal , Mamdouh A. Al-Harthi , Hafiz Mudaser Ahmad , S. M. Shakil Hussain , Mohamed Mahmoud
IPC: C09K8/24
Abstract: A drilling fluid formulation which includes an aqueous phase, and additives including an organophilic clay, a gemini surfactant, and a polyacrylamide. The organophilic clay contains an ion-exchange reaction product of a clay material (e.g. smectite) and quaternary ammonium cations. The polyacrylamide contains reacted units of an acrylamide monomer, an acrylate monomer, and a hydrophobicity modifying monomer. Rheology properties of the drilling fluid including gel strength, yield stress, and storage modulus are specified. The additives present in the drilling fluid synergistically boost its shale swelling inhibition capability.
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公开(公告)号：US10479762B1
公开(公告)日：2019-11-19
申请号：US16269218
申请日：2019-02-06
Inventor： Syed M. Shakil Hussain , Muhammad Shahzad Kamal
IPC: C07C303/32 , C07C309/14 , C09K8/584
Abstract: Zwitterionic surfactants having a sulfonate head group and an ethoxylated alkyl tail. A method for synthesizing the surfactants via amidation of an ethoxylated carboxylic acid and an amine catalyzed by a fluoride salt as well as a sulfonation reaction using a sultone is provided.
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