Method of using multicarboxylate compositions in enhanced oil recovery

    公开(公告)号:US11248159B2

    公开(公告)日:2022-02-15

    申请号:US16259247

    申请日:2019-01-28

    Abstract: The present disclosure relates to the use of a multicarboxylate, such as an alkyl alkoxy dicarboxylate, in enhanced oil recovery processes. Embodiments relate to an aqueous stream and the use thereof. The aqueous stream includes a compound having the chemical formula: R1-R2-R3, wherein R1 includes a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having an oxygen atom linking R1 and R2; R2 includes an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and R3 includes a branched or unbranched hydrocarbon chain and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation. R3 includes 2-12 carbon atoms.

    DETERMINATION OF REPRESENTATIVE WELLS TO CHARACTERIZE SUBSURFACE REGIONS

    公开(公告)号:US20220035070A1

    公开(公告)日:2022-02-03

    申请号:US16947401

    申请日:2020-07-30

    Abstract: Simulated wells may be selected from a subsurface representation to serve as representation of the corresponding simulated subsurface region. Spatial coverage of a simulated well for the simulated subsurface region may be determined based on extent of similarity between the simulated well and other simulated wells in the subsurface representation. The simulated wells may be selected to achieve desired spatial coverage for the simulated subsurface region and to achieve desired representation of properties of interest for the simulated subsurface region.

    ALGINATES FOR CORROSION AND SCALE CONTROL

    公开(公告)号:US20220033704A1

    公开(公告)日:2022-02-03

    申请号:US17380502

    申请日:2021-07-20

    Abstract: Provided herein are methods for inhibiting the formation of scale on equipment in contact with a produced fluid containing a scale-forming divalent cation. Such methods can comprise adding an activated alginate to the produced fluid in an amount effective to react with the divalent cation in the produced fluid to form an activated alginate complex; and separating the activated alginate complex from the produced fluid. Methods can further comprise recycling the activated alginate from the activated alginate complex by dissolving the activated alginate complex. The activated alginate can be prepared by thermally modifying an alginate precursor at a temperature of from 80° C. to 180° C. for a period of at least 24 hours. The activated alginate can be in the form of a solution including 0.1% to 10% by weight activated alginate, based on the total weight of the solution. The activated alginate can exhibit increased solubility in water and kinetics of complexation with the divalent cation compared to the alginate precursor.

    REDUCING ASPHALTENES IN PRODUCED FLUIDS FROM A WELLBORE

    公开(公告)号:US20220025735A1

    公开(公告)日:2022-01-27

    申请号:US16937720

    申请日:2020-07-24

    Inventor: Andrew OGHENA

    Abstract: Embodiments of reducing asphaltenes in produced fluids from a wellbore are provided herein. One embodiment comprises injecting a combination of gas and coated nanoparticles into a wellbore during a gas lift operation. The coated nanoparticles adsorb asphaltenes in the wellbore, thereby inhibiting asphaltene deposition, reducing asphaltene molecule interaction, reducing agglomeration of asphaltenes, or any combination thereof. The embodiment further comprises recovering produced fluids through the wellbore.

    MOLECULAR SIEVE SSZ-122, ITS SYNTHESIS AND USE

    公开(公告)号:US20220024775A1

    公开(公告)日:2022-01-27

    申请号:US17324206

    申请日:2021-05-19

    Inventor: Dan XIE

    Abstract: An aluminosilicate molecular sieve material of BOG framework type, designated SSZ-122, is provided. SSZ-122 can be synthesized using 1-adamantyl-3-propylimidazolium cations as a structure directing agent. SSZ-122 may be used in organic compound conversion and/or sorptive processes.

    SYSTEM AND METHOD FOR 3D SEISMIC VELOCITY ESTIMATION

    公开(公告)号:US20220018981A1

    公开(公告)日:2022-01-20

    申请号:US17369825

    申请日:2021-07-07

    Inventor: Enning Wang

    Abstract: A method is described for estimating seismic velocity from seismic data by training a neural network using a subset of a seismic dataset and the velocity model; estimating a second velocity model using the neural network and a second subset of the seismic dataset; and displaying the second velocity model on a graphical user interface. The method may be executed by a computer system.

    UNCERTAINTY-AWARE MODELING AND DECISION MAKING FOR GEOMECHANICS WORKFLOW USING MACHINE LEARNING APPROACHES

    公开(公告)号:US20210382198A1

    公开(公告)日:2021-12-09

    申请号:US16892050

    申请日:2020-06-03

    Abstract: A Gaussian process is used to provide a nonparametric approach for modeling nonlinear relationships among physical quantities involved in the geomechanics workflow supporting drilling & completion operations. Gaussian process provides a nonparametric framework that enables injection of a prior belief into the basic model format while allowing its specific format to be adaptive in a certain range following an estimated distribution. Both this model-related uncertainty and the pre-assumed input data distributions may be calibrated using non-parametric Bayesian framework with Gaussian process as prior. This approach not only the addresses the uncertainty stemming from the input physical properties but also tackles the uncertainties underlying the adopted physical model, all in this nonparametric Bayesian framework with Gaussian process encoded as prior.

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