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    MODIFIED SONIC TOOL FOR ADVANCED FORMATION EVALUATION
    1.
    发明公开
    MODIFIED SONIC TOOL FOR ADVANCED FORMATION EVALUATION 审中-公开

    公开(公告)号：US20230287786A1

    公开(公告)日：2023-09-14

    申请号：US17692419

    申请日：2022-03-11

    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    Inventor： Abdullatif AL-SHUHAIL ,  Mohamed MAHMOUD ,  Rakan FADHEL

    IPC: E21B47/107 ,  E21B47/085 ,  E21B49/00

    CPC classification number: E21B47/107 ,  E21B47/085 ,  E21B49/005

    Abstract: A formation evaluating system including a sonic sensor device attached to a drill string adjacent to a bit includes a sonic source and a first sonic receiver aligned adjacent to the sonic source, and a second sonic receiver aligned with a horizontal offset X Three kind of two-way trip times are measured: from the sonic source to a) the first receiver after a reflection at the borehole wall, b) the first receiver after propagation in a layer below the borehole wall, an invaded zone, and a reflection at an interface below the borehole wall, and c) the second receiver after oblique propagations in the invaded zone and a reflection at the interface. After determining a sonic speed in the drilling mud and a sonic speed in a matrix of the invaded zone, a porosity and a thickness of the invaded zone are estimated based on a time average equation.

    METHOD FOR DOWNHOLE DETERMINATION OF PERMEABILITY ANISOTROPY USING NMR
    5.
    发明申请
    METHOD FOR DOWNHOLE DETERMINATION OF PERMEABILITY ANISOTROPY USING NMR 有权

    公开(公告)号：US20220003695A1

    公开(公告)日：2022-01-06

    申请号：US17402657

    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.

    DATE PALM RESIDUE DRILLING MUD COMPOSITION
    9.
    发明公开
    DATE PALM RESIDUE DRILLING MUD COMPOSITION 审中-公开

    公开(公告)号：US20240301271A1

    公开(公告)日：2024-09-12

    申请号：US18616739

    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.

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