公开(公告)号：US20190119562A1

公开(公告)日：2019-04-25

申请号：US16221159

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 ,  C09K8/84 ,  E21B43/26 ,  C09K8/05 ,  E21B43/267 ,  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.

公开(公告)号：US20170138190A1

公开(公告)日：2017-05-18

申请号：US15071538

申请日：2016-03-16

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Salah El-Din ELKATATNY ,  Mohamed MAHMOUD

IPC: E21B49/08 ,  E21B43/26 ,  E21B43/25

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 concertation 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.

公开(公告)号：US20250065286A1

公开(公告)日：2025-02-27

申请号：US18815212

申请日：2024-08-26

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Arshad RAZA ,  Guenther GLATZ ,  Mohamed MAHMOUD ,  Mobeen MURTAZA ,  Alade Olalekan SAHEED ,  Esmail Mohamed Ali MOKHEIMER ,  Muhammad Shahzad KAMAL

IPC: F03G7/00

Abstract: A thermochemical engine that includes a reaction chamber having a nitrite source inlet, an ammonium source inlet, and a gas outlet, and a gas-driven energy transducer coupled to the reaction chamber such that a gas produced in the reaction chamber moves the gas-driven energy transducer in a process of exiting the reaction chamber via the gas outlet. The thermochemical engine is configured to produce the gas under pressure by reacting in the reaction chamber a nitrite source comprising a nitrite ion and an ammonium source comprising an ammonium ion in the presence of water at a reaction temperature of 50 to 150° C.

公开(公告)号：US20240301269A1

公开(公告)日：2024-09-12

申请号：US18616632

申请日：2024-03-26

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Tawfik Abdo SALEH ,  Azeem RANA ,  Mobeen MURTAZA ,  Muhammad Shahzad KAMAL ,  Mohamed MAHMOUD

IPC: C09K8/20

CPC classification number: C09K8/206 ,  C09K2208/12

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.

公开(公告)号：US20240218238A1

公开(公告)日：2024-07-04

申请号：US18607916

申请日：2024-03-18

Applicant: King Fahd University of Petroleum and Minerals

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.

公开(公告)号：US20240218236A1

公开(公告)日：2024-07-04

申请号：US18607836

申请日：2024-03-18

Applicant: King Fahd University of Petroleum and Minerals

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.

公开(公告)号：US20230076912A1

公开(公告)日：2023-03-09

申请号：US17671103

申请日：2022-02-14

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Mohamed MAHMOUD ,  Muhammad Shahzad KAMAL

IPC: 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.

公开(公告)号：US20220220361A1

公开(公告)日：2022-07-14

申请号：US17707676

申请日：2022-03-29

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Mohamed MAHMOUD

IPC: C09K8/528 ,  E21B36/00 ,  E21B37/00 ,  C09K8/03

Abstract: A well cleanup process involves removing an impermeable filter cake from a formation face with thermochemical and chelating agents to allow formation fluids to flow from a reservoir to a wellbore. The method may be used with oil and water-based drilling fluids with varied weighting agents, e.g., bentonite, calcium carbonate, or barite. Such thermochemical agents may involve two salts, e.g., NO2− and NH4+, which, when mixed together, can generate pressure and heat, in addition to hot H2O and/or N2. For example, the thermochemical agents may comprise Na+, K+, Li+, Cs+, Mg2+, Ca2+, and/or Ba2+ with NO2− and NH4+ with F−, Cl−, Br−, I−, CO32−, NO3−, CiO4−, and/or −OH. The thermochemical agents in combination with a chelator such as EDTA can removed the filter cake after 6 hours with a removal efficiency of 89 wt % for the barite filter cake in water based drilling fluid, exploiting the generation of a pressure pulse and heat which may disturb the filter cake and/or enhance barite dissolution and polymer degradation.

公开(公告)号：US20220081622A1

公开(公告)日：2022-03-17

申请号：US17022812

申请日：2020-09-16

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Rahul GAJBHIYE ,  Ala AL-DOGAIL ,  Badr AL-DOSSARY ,  Mustafa AL-NASER ,  Mohamed MAHMOUD

IPC: C10G7/12 ,  C10G5/00 ,  G06N20/00 ,  G09B9/00 ,  G09B25/02 ,  G05B13/02 ,  G05B13/04

Abstract: Methods and systems for optimizing the gas-oil separation plant (GOSP) operating parameters in order to maximize the stabilized crude oil recovery in an integrated framework of GOSP operation. The ambient temperature variations daily (day and night) and seasonal (summer and winter) are incorporated to show their impact on liquid recovery. An artificial intelligence model predicts stabilized crude oil recovery for a range of ambient temperatures. The optimal GOSP separator pressures which yield maximum stabilized crude oil recovery are determined for each ambient temperature. The separator pressures of the GOSP may be adjusted to achieve the maximum stabilized crude oil recovery under changing ambient temperatures.

公开(公告)号：US20220003696A1

公开(公告)日：2022-01-06

申请号：US17402662

申请日：2021-08-16

Applicant: King Fahd University of Petroleum and Minerals

Inventor： Mahmoud ELSAYED ,  Ammar EL-HUSSEINY ,  Mohamed MAHMOUD ,  Karem AL-GARADI

IPC: G01N24/08 ,  G01V3/32

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.