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公开(公告)号：US12130399B2
公开(公告)日：2024-10-29
申请号：US18045656
申请日：2022-10-11
Inventor： Brent D. Wheelock , Peter A. Gordon , Limin Song , Kenneth W. Desmond , Yibing Zhang
CPC classification number: G01V1/50 , E21B47/26 , E21B49/00 , G01V1/137 , G01V1/46 , E21B43/26 , G01V2210/646
Abstract: Methods and systems for measuring cluster efficiency for stages of wellbores are provided herein. One method includes selecting a frequency band for generating broadband tube waves within the fluid column of the wellbore and generating the broadband tube waves within the fluid column of the wellbore using a pressure pulse generator that is hydraulically coupled to the wellbore. The method also includes recording data corresponding to the broadband tube waves and reflected broadband tube waves using pressure receivers that are hydraulically coupled to the wellbore. The pressure receivers are arranged into arrays with two or more pressure receivers in each array. The data recorded by the pressure receivers relate to characteristics of reflectors (including perforation cluster/fracture interfaces) within the wellbore. The method further includes processing the recorded data using interferometry and performing full waveform inversion(s) on the processed data to determine frequency-dependent, complex-valued reflection coefficients at each perforation cluster/fracture interface.
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公开(公告)号：US11624853B2
公开(公告)日：2023-04-11
申请号：US17158318
申请日：2021-01-26
Inventor： Brent D. Wheelock , Lang Feng , Qiuzi Li , Harry W. Deckman , Mehmet D. Ertas
Abstract: Embodiments of an invention disclosed herein relate to methods for performing formation evaluation of a formation or formation's surrounding to identify and characterize the abundance and morphology of non-ionic conductor grains, “c-grains”, within the formations that are evaluated by formation evaluation (FE) tools. The methods and related systems as disclosed herein are directed to correcting any existing FE logs that can be adversely affected by the presence of c-grains in the detection volume of FE tools, and/or obtaining new FE information that is unavailable by the application of existing FE methods.
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公开(公告)号：US11346968B2
公开(公告)日：2022-05-31
申请号：US16708710
申请日：2019-12-10
Inventor： Brent D. Wheelock , Mehmet D. Ertas
Abstract: A method and apparatus for identifying non-elastic indicators for a subsurface region, the method including obtaining seismic data for the subsurface region; generating a best-fit elastic model from the seismic data; and identifying non-elastic indicators from the seismic data and the best-fit elastic model. The method and apparatus may also include estimating reservoir flow properties from the non-elastic indicators based on a poroelastic interpretation of the seismic response. The method and apparatus may also include subdividing the seismic data into a plurality of subdivisions, wherein: generating the best-fit elastic model from the seismic data includes generating an individual best-fit elastic model for each subdivision; identifying non-elastic indicators from the seismic data and the best-fit elastic model includes identifying individual non-elastic indicators from each subdivision and its respective individual best-fit elastic model; and estimating the reservoir flow properties from the non-elastic indicators comprises analyzing the individual non-elastic indicators based on the subdivisions.
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