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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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公开(公告)号：US11555795B2
公开(公告)日：2023-01-17
申请号：US17402657
申请日：2021-08-16
Inventor： Mahmoud Elsayed , Ammar El-Husseiny , Mohamed Mahmoud , Karem Al-Garadi
Abstract: A method for predicting formation permeability by measuring diffusional tortuosity in several directions by pulse gradient NMR. The method comprises evaluating an anisotropic diffusion coefficient by pulsed gradient NMR, determining diffusional tortuosity from the restricted diffusion data, supplementing the NMR results with resistivity and sonic logging data, measuring anisotropic tortuosity and porosity by resistivity and sonic data and combining all components in a single fitting model. The 11-coefficient model is trained to recognize the true values of permeability by comparing the real oil permeabilities measured. in a library of oil-carrying rock cores with the NMR, resistivity and sonic correlates The fitting coefficients are extracted by minimizing the discrepancy between the laboratory measured permeabilities and the predicted values combining all rapid logging information components with the agreement-maximizing weights.
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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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5.发明申请公开(公告)号：US20200325381A1
公开(公告)日：2020-10-15
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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Patent Agency Ranking
公开(公告)号：US09810063B2
公开(公告)日：2017-11-07
申请号：US15071538
申请日：2016-03-16
Inventor： Salah El-Din Elkatatny , Mohamed Mahmoud
CPC classification number: E21B49/086 , C09K8/72 , E21B41/0035 , E21B43/25 , E21B43/26 , E21B2049/085
Abstract: A method of evaluating the effectiveness of matrix acidizing treatment in a subterranean formation surrounding a wellbore that involves injecting a plurality of cationic salts into multiple sections of the subterranean formation before acidizing treatment, followed by collecting the cationic salts at the surface of the wellbore after producing the wellbore. A permeability recovery factor is calculated from a concentration ratio of the injected salt to the collected salt. The permeability recovery factor shows the effectiveness of the acidizing treatment. The permeability recovery factor also indicates the contribution of each individual section of the formation to the total production flow.
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公开(公告)号：US12276652B1
公开(公告)日：2025-04-15
申请号：US18760215
申请日：2024-07-01
Inventor： Ali Abdulwahab Oshaish , Mohamed Mahmoud , Panteleimon Soupios , Ammar El-Husseiny , Panagiotis Kirmizakis
IPC: G01N33/28 , G01N15/02 , G01N15/0205 , G01V3/06 , G01N15/00
Abstract: A method of emulsion detection includes executing an oil production process from a volume of a formation. While executing the oil production process, conducting real-time spectral induced polarization (SIP) measurements of the volume of the formation to determine a real-time real conductivity value (RCV) of a matrix material in the volume of the formation. The method further includes determining an onset of water-in-oil (W/O) emulsion formation in the volume of the formation by analyzing the real-time RCV of the matrix material and optionally identifying the onset of the W/O emulsion formation when the real-time RCV first exceeds a first threshold value.
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公开(公告)号：US12084613B2
公开(公告)日：2024-09-10
申请号：US18607836
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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公开(公告)号：US11965132B2
公开(公告)日：2024-04-23
申请号：US18364596
申请日：2023-08-03
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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公开(公告)号：US11441064B2
公开(公告)日：2022-09-13
申请号：US16733476
申请日：2020-01-03
Inventor： Salaheldin Elkatatny , Mohamed Mahmoud , Hany Gamal , Abdullah Sultan
Abstract: A method of removing iron-containing scale from a wellbore, pipe, or metal-containing surface involving contacting the iron-containing scale with a biodegradable descaler solution of water, hydrochloric acid, formic acid, citric acid, a corrosion inhibitor, a corrosion inhibitor intensifier, and a surfactant. The method is performed at a pressure of 14 to 400 psi and a temperature of 100 to 150° C. The method removes iron-containing scale made of iron sulfide, iron carbonate, iron oxyhydroxide, and calcium carbonate. The method meets industry standard steel corrosion rates of less than 0.049 lb/ft2 per day. Also disclosed is a biodegradable descaler solution of water, hydrochloric acid, formic acid, citric acid, a corrosion inhibitor, a corrosion inhibitor intensifier, and a surfactant that meets OECD 301B thresholds for ready biodegradability.
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