公开(公告)号：US10179874B2

公开(公告)日：2019-01-15

申请号：US15397494

申请日：2017-01-03

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohamed Mahmoud ,  Salaheldin Elkatatny ,  Abdulwahab Zaki Ali

IPC: E21B43/267 ,  C09K8/66 ,  C01F11/46 ,  C09K8/05 ,  E21B43/26 ,  C09K8/84

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.

公开(公告)号：US12173225B2

公开(公告)日：2024-12-24

申请号：US18489296

申请日：2023-10-18

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Abdelmjeed Mohamed ,  Salaheldin Elkatatny ,  Mohamed Mahmoud

IPC: C09K8/18 ,  C09K8/16

Abstract: An drilling mud composition is described, which includes an aqueous base fluid, a viscosifier, and a weighting material The drilling mud composition also includes an anti-sagging agent that comprises a dimethylamino methyl ester, such as methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate. The anti-sagging agent may be used to prevent barite sagging, where barite is used as a weighting material. Small amounts of the anti-sagging agent may be used to maintain a low sag factor while drilling, and without causing unwanted increases in viscosity. The anti-sagging agent is effective for both vertical and inclined wellbores.

公开(公告)号：US12110447B1

公开(公告)日：2024-10-08

申请号：US18297041

申请日：2023-04-07

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Ashraf Ahmed ,  Salaheldin Elkatatny ,  Sagheer Onaizi

IPC: C09K8/03 ,  E21B41/02 ,  E21B21/06

CPC classification number: C09K8/032 ,  E21B41/02 ,  C09K2208/18 ,  C09K2208/20 ,  E21B21/067

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.

公开(公告)号：US11708520B2

公开(公告)日：2023-07-25

申请号：US16454909

申请日：2019-06-27

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Ahmed Abdulhamid Mahmoud ,  Salaheldin Elkatatny ,  Mohamed Mahmoud

IPC: C09K8/487 ,  C09K8/592 ,  C04B7/02 ,  C04B14/06 ,  C04B14/10 ,  C04B103/50 ,  C04B103/46

CPC classification number: C09K8/487 ,  C04B7/02 ,  C04B14/06 ,  C04B14/10 ,  C09K8/592 ,  C04B2103/46 ,  C04B2103/50 ,  C09K2208/10 ,  C09K2208/28

Abstract: Cementing compositions containing a hydraulic cement, halloysite nanoparticles, and silica flour. The cementing compositions may optionally include other additives such as a friction reducer, a defoamer, and a fluid loss additive. Cement samples made therefrom and methods of producing such cement samples are also specified. The addition of halloysite nanoparticles and silica flour provides enhanced mechanical strength (e.g. compressive strength, flexural strength) and improved durability (e.g. resistance to CO2 and salinity) to the cement, making them suitable cementing material for oil and gas wells.

公开(公告)号：US11630045B2

公开(公告)日：2023-04-18

申请号：US16384241

申请日：2019-04-15

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Salaheldin Elkatatny ,  Rakan Fadhel ,  Yazan Mheibesh

IPC: G01N11/06 ,  E21B21/01 ,  G01N33/24 ,  G01G17/06 ,  G01N1/38 ,  E21B41/00

Abstract: The invention is directed to an automated Marsh funnel and Marsh funnel apparatus or system, and an automated method for measuring the Marsh funnel time and density of drilling muds and calculating other rheological properties from Marsh funnel time and mud weight. The system measures and reports rheological properties of drilling muds in real time and faster, more conveniently, and more accurately than conventional manual methods.

公开(公告)号：US11447395B2

公开(公告)日：2022-09-20

申请号：US16146141

申请日：2018-09-28

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Abdelmjeed Mohamed ,  Mohamed Mahmoud ,  Salaheldin Elkatatny ,  Abdullah Sultan

IPC: C01B33/40 ,  C01B33/44

Abstract: Method of converting calcium bentonite to sodium bentonite that is suitable for use as drilling mud or a cement additive. The method comprises preparing a suspension comprising sea water and calcium bentonite at a pH in the range of 8-11, and continuously heating and stirring the suspension for a time in the range of 12 hours to 36 hours. Additives such as soda ash and sodium salt of ethylenediamineteraraacetc acid (EDTA) may be added to the suspension to improve the properties of the product sodium bentonite.

公开(公告)号：US20200087568A1

公开(公告)日：2020-03-19

申请号：US16133153

申请日：2018-09-17

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

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.

公开(公告)号：US20190162644A1

公开(公告)日：2019-05-30

申请号：US16202760

申请日：2018-11-28

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Rakan Fadhel ,  Salaheldin Elkatatny

IPC: G01N15/08

Abstract: The disclosed subject matter broadly involves a device and a method for determining characteristics of a rock sample. The rock sample can be provided in a sample receptacle. Length of the rock sample can be automatically determined when the rock sample is in the sample receptacle. A current can be provided through the rock sample, which, along with the determined length, can be used to determine one or more of resistance-, porosity-, and permeability-related characteristics of the rock sample.

公开(公告)号：US20190119561A1

公开(公告)日：2019-04-25

申请号：US16221040

申请日：2018-12-14

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohamed MAHMOUD ,  Salaheldin Elkatatny ,  Abdulwahab Zaki Ali

IPC: C09K8/66 ,  C09K8/05 ,  C09K8/84 ,  C01F11/46

CPC classification number: C09K8/665 ,  C01F11/462 ,  C01P2004/61 ,  C09K8/05 ,  C09K8/845 ,  C09K2208/34 ,  E21B43/26 ,  E21B43/267

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.