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公开(公告)号：US11685854B1
公开(公告)日：2023-06-27
申请号：US17948722
申请日：2022-09-20
Inventor： Salaheldin Elkatatny , Ahmed Abdulhamid Mahmoud
IPC: C09K8/487 , C04B28/04 , C04B18/24 , C04B103/46 , C04B103/50 , C04B111/22 , C04B103/40
CPC classification number: C09K8/487 , C04B18/248 , C04B28/04 , C04B2103/408 , C04B2103/46 , C04B2103/50 , C04B2111/22 , C04B2201/50
Abstract: A carbonation-resistant cementitious blend containing cement, an expandable agent present, a dispersion agent, a fluid loss additive, a defoamer, and an olive waste. Concrete samples made therefrom and methods of producing such concrete samples are also specified. The addition of olive waste provides enhanced durability (carbonation resistance) and maintains mechanical strength (e.g. compressive strength, tensile strength) after exposure to CO2 and/or brine. The resulting concretes are suitable cementing material for oil and gas wells as well as wellbores for geologic carbon sequestration.
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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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公开(公告)号：US11421143B2
公开(公告)日：2022-08-23
申请号：US16133153
申请日：2018-09-17
Inventor： Mohamed Mahmoud , Salaheldin Elkatatny
IPC: C09K8/532
Abstract: A method of removing a heterogeneous scale from a surface in fluid communication with a wellbore and/or subterranean formation comprising contacting the scale with a composition comprising tetrakis(hydroxmethyl)phosphonium sulfate (THPS) and N-(2-hydroxyethyl)ethylenediaminetriacetic acid (THEDTA) to dissolve the scale having a pH in the range of about 6.0 to 8.0. The composition is suitable to remove iron sulfide and calcium carbonate scale in the absence of corrosion resistance at a temperature up to about 150° C. Also, the composition may be used remove scale from surface pipe line and other petroleum oil handling equipment.
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公开(公告)号：US20190023976A1
公开(公告)日：2019-01-24
申请号：US16141435
申请日：2018-09-25
Inventor： Mohamed MAHMOUD , Salaheldin Elkatatny , Abdulwahab Zaki Ali
Abstract: A drilling fluid composition that contains micronized barite particles with a particle size in the range of 1 to 5 μm, and also a method of fracturing a subterranean formation using the drilling fluid composition. Various embodiments of the micronized barite particles and the method of making thereof, the drilling fluid composition, and the method of fracturing a subterranean formation are also provided.
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公开(公告)号：US12173223B1
公开(公告)日：2024-12-24
申请号：US18800260
申请日：2024-08-12
Inventor： Ashraf Ahmed , Salaheldin Elkatatny , Sagheer Onaizi
Abstract: A drilling fluid composition includes a base fluid; at least one additive selected from the group consisting of an anti-foaming agent, a fluid-loss additive, a viscosity modifier, a shale stabilizer, an alkali compound, a bridging agent, and a weighting agent; and 0.01 to 0.5 weight percentage (wt. %) of particles of steel slag, based on a total weight of the drilling fluid composition. A method for reducing a hydrogen sulfide (H2S) content of a H2S-containing subterranean formation. A process for removing H2S from a H2S-containing gas composition by the drilling fluid composition.
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Patent Agency Ranking
公开(公告)号：US11781054B1
公开(公告)日：2023-10-10
申请号：US17874756
申请日：2022-07-27
Inventor： Salaheldin Elkatatny , Salem Basfar , Abdelmjeed Mohamed
CPC classification number: C09K8/16 , C09K8/145 , C09K2208/18
Abstract: A drilling fluid formulation is provided, which includes an aqueous base fluid, a synthetic modified phyllosilicate as an anti-sagging additive, an inorganic base, and a weighting agent (e.g. barite). The synthetic modified phyllosilicate contains a clay material (e.g. smectite) and a metal selected from ruthenium, rhodium, palladium, osmium, iridium, and platinum. The synthetic modified phyllosilicate is effective in preventing barite sagging as demonstrated by low sag factor when drilling at elevated temperatures. Rheology properties of the drilling fluid including gel strength, yield point, plastic viscosity, and storage modulus are also specified.
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公开(公告)号：US11414589B2
公开(公告)日：2022-08-16
申请号：US16749418
申请日：2020-01-22
Inventor： Salaheldin Elkatatny , Abdelmjeed Mohamed , Salem Basfer
Abstract: A method of removing calcium carbonate-containing oil-based filter cake from a wellbore involving contacting the calcium carbonate-containing oil-based filter cake with a biodegradable acid solution of water, hydrochloric acid, formic acid, citric acid, a surfactant, and a glycol ether mutual solvent. The method is performed at a pressure of 200 to 400 psi and a temperature of 50 to 125° C. The method removes calcium carbonate-containing oil-based filter cake made of a water-in-oil emulsion, calcium carbonate, a primary emulsifier, a secondary emulsifier, a contamination treatment agent, a viscosity control agent, a filtration control agent. The method meets industry standard steel corrosion rates of less than 0.049 lb/ft2 per day. Also disclosed is a biodegradable acid solution of water, hydrochloric acid, formic acid, citric acid, a surfactant, and a glycol ether mutual solvent that meets OECD 301B thresholds for ready biodegradability.
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公开(公告)号：US20210222050A1
公开(公告)日：2021-07-22
申请号：US16749418
申请日：2020-01-22
Inventor： Salaheldin Elkatatny , Abdelmjeed Mohamed , Salem Basfer
Abstract: A method of removing calcium carbonate-containing oil-based filter cake from a wellbore involving contacting the calcium carbonate-containing oil-based filter cake with a biodegradable acid solution of water, hydrochloric acid, formic acid, citric acid, a surfactant, and a glycol ether mutual solvent. The method is performed at a pressure of 200 to 400 psi and a temperature of 50 to 125° C. The method removes calcium carbonate-containing oil-based filter cake made of a water-in-oil emulsion, calcium carbonate, a primary emulsifier, a secondary emulsifier, a contamination treatment agent, a viscosity control agent, a filtration control agent. The method meets industry standard steel corrosion rates of less than 0.049 lb/ft2 per day. Also disclosed is a biodegradable acid solution of water, hydrochloric acid, formic acid, citric acid, a surfactant, and a glycol ether mutual solvent that meets OECD 301B thresholds for ready biodegradability.
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9.发明授权公开(公告)号：US10358593B2
公开(公告)日：2019-07-23
申请号：US16221159
申请日：2018-12-14
Inventor： Mohamed Mahmoud , Salaheldin Elkatatny , Abdulwahab Zaki Ali
Abstract: A drilling fluid composition that contains micronized barite particles with a particle size in the range of 1 to 5 μm, and also a method of fracturing a subterranean formation using the drilling fluid composition. Various embodiments of the micronized barite particles and the method of making thereof, the drilling fluid composition, and the method of fracturing a subterranean formation are also provided.
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公开(公告)号：US12258513B2
公开(公告)日：2025-03-25
申请号：US18800281
申请日：2024-08-12
Inventor： Ashraf Ahmed , Salaheldin Elkatatny , Sagheer Onaizi
Abstract: A drilling fluid composition includes a base fluid; at least one additive selected from the group consisting of an anti-foaming agent, a fluid-loss additive, a viscosity modifier, a shale stabilizer, an alkali compound, a bridging agent, and a weighting agent; and 0.01 to 0.5 weight percentage (wt. %) of particles of steel slag, based on a total weight of the drilling fluid composition. A method for reducing a hydrogen sulfide (H2S) content of a H2S-containing subterranean formation. A process for removing H2S from a H2S-containing gas composition by the drilling fluid composition.
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